华工电气与你分享黄色环氧板的技术参数

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一、黄色环氧板简介
　 环氧树脂是泛指分子中含有两个或两个以上环氧基团的****高分子化合物，除个别外，它们的相对分子质量都不高。环氧树脂的分子结构是以分子链中含有活泼的环氧基团为其特征，环氧基团可以位于分子链的末端、中间或成环状结构。由于分子结构中含有活泼的环氧基团，使它们可与多种类型的固化剂发生交联反应而形成不溶、不熔的具有三向网状结构的高聚物。
黄色环氧板是由玻璃纤维布用环氧树脂粘合而成加温加压制作，型号为3240，在中温下机械性能高，在高温下电气性能稳定。适用于机械、电器及电子用高绝缘结构零部件，具有高的机械和介电性能较好的耐热性和耐潮性。耐热等级F级（155度）。

1、规格厚度：0.5～100mm 
2、常规规格：1000mm*2000mm
3、颜色：黄色
4、产地：国产
5、在高温180℃的情况下受热变形，一般不与其他金属在一块受热，可能引起金属板材变形。

二、黄色环氧板应用特性
1、 形式多样。各种树脂、固化剂、改性剂体系几乎可以适应各种应用对形式提出的要求，其范围可以从极低的粘度到高熔点固体。
2、 固化方便。选用各种不同的固化剂，环氧树脂体系几乎可以在0～180℃温度范围内固化。
3、 粘附力强。环氧树脂分子链中固有的极性羟基和醚键的存在，使其对各种物质具有很高的粘附力。环氧树脂固化时的收缩性低，产生的内应力小，这也有助于提高粘附强度。
4、 收缩性低。环氧树脂和所用的固化剂的反应是通过直接加成反应或树脂分子中环氧基的开环聚合反应来进行的，没有水或其它挥发性副产物放出。它们和不饱和聚酯树脂、酚醛树脂相比，在固化过程中显示出很低的收缩性（小于2%）。
5、 力学性能。固化后的环氧树脂体系具有优良的力学性能。

三、黄色环氧板技术参数

1、外观 表面应平滑，无气泡、皱纹和裂纹。
2、标称厚度及允许偏差见表1。
表1 　mm

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****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:108.4pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±0.10 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:108.4pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">8.0 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:101.55pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±0.72 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:90.1pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;" colspan="2">0.5 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:108.4pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±0.12 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:108.4pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">10.0 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:101.55pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±0.82 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:90.1pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;" colspan="2">0.6 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:108.4pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±0.13 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:108.4pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">12.0 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:101.55pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±0.94 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:90.1pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;" colspan="2">0.8 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:108.4pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±0.16 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:108.4pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">14.0 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:101.55pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±1.02 <****> <**** 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****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:101.55pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±1.70 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:90.1pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;" colspan="2">2.5 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:108.4pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±0.33 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:108.4pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">35.0 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:101.55pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±1.95 <****> <**** 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****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:88.95pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">6.0 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:108.4pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±0.60 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:108.4pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">60.0 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:101.55pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">±2.50 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** 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colspan="4">注： 1 其他允许偏差可由供需双方协商。 2 对于标称厚度不在所列的优选厚度之一者，其允许偏差应采用下一个较大的优选厚度的偏差。

3、平直度见表2。表2 层压板表面距直尺的大允许偏差mm

<**** ****="width:715px;" cellspacing="0" cellpadding="0" border="1"> <****> <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:124.5pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;" rowspan="2">厚度 （d） <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:277.5pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;" colspan="2">直尺长度 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:5cm;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">1000 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:135pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">500 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:124.5pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">1.6≤d≤3 3<> 6<> 8< d <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:5cm;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">见注 10 8 6 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:135pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">见注 2.5 2.0 1.5 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:401.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;" colspan="3">>注：对标称厚度在1.6 mm≤d≤3 mm的允许偏差正在考虑之中

4、性能要求见表4。表4性能要求

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****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:37.6pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;" colspan="2">1 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">垂直层向弯曲强度 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">MPa <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≥340 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">- <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:37.6pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;" colspan="2">2 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">平行层向冲击强度 （简支梁法） <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">KJ/ <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≥33 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;" rowspan="2">两者之一满足本标准要求即可 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:37.6pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;" colspan="2">3 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">平行层向冲击强度 （悬臂梁法） <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">kJ/ <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≥34 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:37.6pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;" colspan="2">4 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">垂直层向电气强度 （90℃±2℃油中） <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">MV/m <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">见表5 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">- <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">5 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">平行层向击穿电压 （90℃±2℃油中） <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">kV <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≥35 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">- <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">6a <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">介电常数 （48Hz-62Hz以下） <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">- <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤5.5 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;" rowspan="2">两者之一满足本标准要求即可 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">6b <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">介电常数 （1MHz以下） <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">- <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤5.5 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">7 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">马丁温度纵向 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">℃ <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≥200 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">8 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">热稳定性 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">℃ <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">200 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">9 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">耐油性变压器油中4h <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">℃ <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">130 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">10 <**** ****="width:149.7pt;background-color:****ansparent;">拉伸强度纵向 横向 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">MPa <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≥314 ≥216 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">11 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">粘合强度 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">N <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≥5600 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">12 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">表面电阻率常态时 浸水后 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">MΩ <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≥1× ≥1× <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">13 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">体积电阻率常态时 浸水后 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">MΩ·m <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≥1× ≥1× <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">14 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">平行层向绝缘电阻常态时 浸水后 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">MΩ <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≥1× ≥1× <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">15a <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">介质损耗因数 （48Hz-62Hz以下） <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">- <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤0.04 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;" rowspan="2">两者之一满足本标准要求即可 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">15b <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">介质损耗因数 （1MHz以下） <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">- <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤0.04 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">16 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">浸水后绝缘电阻 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">Ω <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≥5.0× <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">- <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">17 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">密度 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">g/ <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">（1.7-1.9） <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">- <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">  <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:36.45pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">18 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:149.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">吸水性 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:63.2pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">mg <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.7pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">见表6 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:84.25pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">-

表5垂直层向电气强度

<**** ****="width:715px;" cellspacing="0" cellpadding="0" border="1"> <****> <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64.05pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">平均厚度 mm <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">电气强度 MV/m <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">厚度 mm <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">电气强度 MV/m <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64.05pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">0.4 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥16.9 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">1.6 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥12.7 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64.05pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">0.5 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥16.1 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">1.8 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥12.2 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64.05pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">0.6 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥15.6 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">2.0 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥11.8 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64.05pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">0.7 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥15.2 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">2.2 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥11.4 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64.05pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">0.8 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥14.8 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">2.4 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥11.1 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64.05pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">0.9 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥14.5 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">2.5 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥10.9 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64.05pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">1.0 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥14.2 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">2.6 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥10.8 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64.05pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">1.2 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥13.7 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">2.8 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥10.5 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64.05pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">1.4 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥13.2 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:64pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">3.0 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:140.2pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">≥10.2

注：1 对90℃±2℃油中垂直层向电气强度，可任选20s逐级升压和1min耐压试验要求中的一种。对符合二者之一要求的材料，应视其90℃±2℃油中垂直层向电气强度是符合本标准要求的。 2 如果测得的试样厚度算术平均值是介于表中两厚度之间，则其指标值应从内插法求取。如果测得的厚度算术平均值小于0.4mm，则其电气强度指标值取≥16.9MV/m。如果标称厚度为3mm，并且测得的厚度算术平均值大于3mm时，则其电气强度的指标值取≥10.2MV/m表6吸水性

<**** ****="margin:auto auto auto 1.15pt;width:656px;" cellspacing="0" cellpadding="0" border="1"> <****> <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">试样厚度平均值 mm <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">吸水性 mg <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">试样厚度平均值 mm <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:#cccccc;border-right-color:#ece9d8;">吸水性 mg <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">0.4 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤17 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">5 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤25 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">0.5 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤17 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">6 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤27 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">0.6 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤17 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">8 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤31 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">0.8 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤18 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">10 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤34 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">1.0 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤18 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">12 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤38 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">1.2 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤18 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">14 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤41 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">1.6 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤19 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">16 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤46 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">2.0 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤20 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">20 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤52 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">2.5 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤21 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">25 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤61 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">3 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤22 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">单面加工至22.5 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤73 <****> <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:161.85pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">4 <**** ****="border-left-color:#ece9d8;border-bottom-color:#ece9d8;width:73.9pt;border-top-color:#ece9d8;background-color:****ansparent;border-right-color:#ece9d8;">≤23 <**** ****="width:73.9pt;background-color:****ansparent;"> 

注：1如果测得的试样厚度算术平均值是介于表中两厚度之间，则其指标值应从内插法求得。2如果测得的厚度算术平均值小于0.4mm，则其指标值取≤17mg。如果标称厚度为25mm并测得的厚度算术平均值大于25mm时，则其指标值取≤61mg。标称厚度大于25mm的板材，则应从单面加工至22.5mm且加工面应是比较光滑的。
  3240环氧板是由电工用无碱玻璃纤维布浸以环氧酚醛树脂，经烘焙、热压而成。
  3240环氧板具有较高的机械和介电性能，较好的耐热性和耐潮性，并有良好的机械加工性，耐热等级为B级。
  3240环氧板适用于电机、电器设备中作为绝缘结构零部件，并可在潮温环境和变压器油中使用。
  324环氧板以较高的机械性能和电气性能，广泛应用在发电机、马达、电子器具上作为绝缘材料和构件。在变压器油压环境和湿度环境中也非常适用。

7、环氧树脂和所用的固化剂的反应是通过直接加成反应或树脂分子中环氧基的开环聚合反应来进行的，没有水或其它挥发性副产物放出。它们和不饱和聚酯树脂、酚醛树脂相比，在固化过程中显示出很低的收缩性（小于2%）。