一、环氧树脂板简介 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。 二、环氧树脂板应用特性 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。 6、 电性能。固化后的环氧树脂体系是一种具有高介电性能、耐表面漏电、耐电弧的优良绝缘材料。 7、 化学稳定性。通常,固化后的环氧树脂体系具有优良的耐碱性、耐酸性和耐溶剂性。像固化环氧体系的其它性能一样,化学稳定性也取决于所选用的树脂和固化剂。适当地选用环氧树脂和固化剂,可以使其具有特殊的化学稳定性能。 8、 尺寸稳定性。上述的许多性能的综合,使环氧树脂体系具有突出的尺寸稳定性和耐久性。 9、 耐霉菌。固化的环氧树脂体系耐大多数霉菌,可以在苛刻的热带条件下使用。 三、环氧树脂板技术参数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
<**** class="xxmscon" ****="color:#404040;font-family:宋体;font-size:14px;line-height:22px;"><**** border="1" cellspacing="0" cellpadding="0" width="98%" ****="width:715px;"><****><****><**** valign="top" width="120" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:90.1pt;background:#cccccc;">标称厚度****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background:#cccccc;">偏差****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background:#cccccc;">标准厚度****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background:#cccccc;">偏差****>****><****><**** valign="top" width="120" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:90.1pt;background-color:****ansparent;">0.4****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.10****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">8.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±0.72****>****><****><**** valign="top" width="120" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:90.1pt;background-color:****ansparent;">0.5****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.12****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">10.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±0.82****>****><****><**** valign="top" width="120" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:90.1pt;background-color:****ansparent;">0.6****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.13****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">12.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±0.94****>****><****><**** valign="top" width="120" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:90.1pt;background-color:****ansparent;">0.8****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.16****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">14.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±1.02****>****><****><**** valign="top" width="120" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:90.1pt;background-color:****ansparent;">1.0****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.18****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">16.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±1.12****>****><****><**** valign="top" width="120" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:90.1pt;background-color:****ansparent;">1.2****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.20****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">20.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±1.30****>****><****><**** valign="top" width="120" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:90.1pt;background-color:****ansparent;">1.6****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.24****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">25.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±1.50****>****><****><**** valign="top" width="120" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:90.1pt;background-color:****ansparent;">2.0****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.28****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">30.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±1.70****>****><****><**** valign="top" width="120" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:90.1pt;background-color:****ansparent;">2.5****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.33****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">35.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±1.95****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="119" ****="border-color:#ece9d8;padding:0cm;width:88.95pt;background-color:****ansparent;">3.0****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.37****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">40.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±2.10****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="119" ****="border-color:#ece9d8;padding:0cm;width:88.95pt;background-color:****ansparent;">4.0****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.45****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">45.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±2.30****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="119" ****="border-color:#ece9d8;padding:0cm;width:88.95pt;background-color:****ansparent;">5.0****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.52****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">50.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±2.45****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="119" ****="border-color:#ece9d8;padding:0cm;width:88.95pt;background-color:****ansparent;">6.0****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">±0.60****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">60.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±2.50****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="119" ****="border-color:#ece9d8;padding:0cm;width:88.95pt;background-color:****ansparent;"> ****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;"> ****><**** valign="top" width="145" ****="border-color:#ece9d8;padding:0cm;width:108.4pt;background-color:****ansparent;">80.0****><**** valign="top" width="135" ****="border-color:#ece9d8;padding:0cm;width:101.55pt;background-color:****ansparent;">±2.80****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="543" colspan="4" ****="border-color:#ece9d8;padding:0cm;width:407.3pt;background-color:****ansparent;">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 <**** class="xxmscon" ****="color:#404040;font-family:宋体;font-size:14px;line-height:22px;"><**** border="1" cellspacing="0" cellpadding="0" width="98%" ****="width:715px;"><****><****><**** valign="top" rowspan="2" width="166" ****="border-color:#ece9d8;padding:0cm;width:124.5pt;background:#cccccc;">厚度 (d)****><**** valign="top" width="370" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:277.5pt;background:#cccccc;">直尺长度****>****><****><**** valign="top" width="189" ****="border-color:#ece9d8;padding:0cm;width:5cm;background:#cccccc;">1000****><**** valign="top" width="180" ****="border-color:#ece9d8;padding:0cm;width:135pt;background:#cccccc;">500****>****><****><**** valign="top" width="166" ****="border-color:#ece9d8;padding:0cm;width:124.5pt;background-color:****ansparent;">1.6≤d≤3 3<> 6<> 8< d****><**** valign="top" width="189" ****="border-color:#ece9d8;padding:0cm;width:5cm;background-color:****ansparent;">见注 10 8 6****><**** valign="top" width="180" ****="border-color:#ece9d8;padding:0cm;width:135pt;background-color:****ansparent;">见注 2.5 2.0 1.5****>****><****><**** valign="top" width="535" colspan="3" ****="border-color:#ece9d8;padding:0cm;width:401.25pt;background-color:****ansparent;">>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 <**** class="xxmscon" ****="color:#404040;font-family:宋体;font-size:14px;line-height:22px;"><**** border="1" cellspacing="0" cellpadding="0" width="98%" ****="width:715px;"><****><****><**** valign="top" width="50" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:37.6pt;background:#cccccc;">序 号****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background:#cccccc;">指 标 名 称****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background:#cccccc;">单 位****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background:#cccccc;">指 标 值****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background:#cccccc;">说明****>****><****><**** valign="top" width="50" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:37.6pt;background-color:****ansparent;">1****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">垂直层向弯曲强度****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">MPa****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≥340****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;">-****>****><****><**** valign="top" width="50" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:37.6pt;background-color:****ansparent;">2****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">平行层向冲击强度 (简支梁法)****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">KJ/****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≥33****><**** valign="top" rowspan="2" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;">两者之一满足本标准要求即可****>****><****><**** valign="top" width="50" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:37.6pt;background-color:****ansparent;">3****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">平行层向冲击强度 (悬臂梁法)****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">kJ/****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≥34****>****><****><**** valign="top" width="50" colspan="2" ****="border-color:#ece9d8;padding:0cm;width:37.6pt;background-color:****ansparent;">4****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">垂直层向电气强度 (90℃±2℃油中)****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">MV/m****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">见表5****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;">-****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">5****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">平行层向击穿电压 (90℃±2℃油中)****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">kV****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≥35****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;">-****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">6a****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">介电常数 (48Hz-62Hz以下)****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">-****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≤5.5****><**** valign="top" rowspan="2" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;">两者之一满足本标准要求即可****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">6b****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">介电常数 (1MHz以下)****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">-****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≤5.5****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">7****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">马丁温度纵向****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">℃****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≥200****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;"> ****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">8****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">热稳定性****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">℃****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">200****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;"> ****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">9****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">耐油性变压器油中4h****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">℃****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">130****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;"> ****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">10****><**** valign="top" width="200" ****="border-bottom-color:#ece9d8;padding:0cm;width:149.7pt;border-right-color:#ece9d8;border-left-color:#ece9d8;background-color:****ansparent;">拉伸强度纵向 横向****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">MPa****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≥314 ≥216****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;"> ****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">11****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">粘合强度****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">N****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≥5600****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;"> ****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">12****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">表面电阻率常态时 浸水后****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">MΩ****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≥1× ≥1×****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;"> ****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">13****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">体积电阻率常态时 浸水后****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">MΩ·m****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≥1× ≥1×****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;"> ****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">14****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">平行层向绝缘电阻常态时 浸水后****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">MΩ****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≥1× ≥1×****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;"> ****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">15a****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">介质损耗因数 (48Hz-62Hz以下)****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">-****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≤0.04****><**** valign="top" rowspan="2" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;">两者之一满足本标准要求即可****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">15b****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">介质损耗因数 (1MHz以下)****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">-****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≤0.04****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">16****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">浸水后绝缘电阻****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">Ω****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">≥5.0×****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;">-****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">17****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">密度****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">g/****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">(1.7-1.9)****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;">-****>****><****><**** width="2" ****="border-color:#ece9d8;padding:0cm;background-color:****ansparent;"> ****><**** valign="top" width="49" ****="border-color:#ece9d8;padding:0cm;width:36.45pt;background-color:****ansparent;">18****><**** valign="top" width="200" ****="border-color:#ece9d8;padding:0cm;width:149.7pt;background-color:****ansparent;">吸水性****><**** valign="top" width="84" ****="border-color:#ece9d8;padding:0cm;width:63.2pt;background-color:****ansparent;">mg****><**** valign="top" width="98" ****="border-color:#ece9d8;padding:0cm;width:73.7pt;background-color:****ansparent;">见表6****><**** valign="top" width="112" ****="border-color:#ece9d8;padding:0cm;width:84.25pt;background-color:****ansparent;">-****>****>****>****>****> 表5垂直层向电气强度 <**** class="xxmscon" ****="color:#404040;font-family:宋体;font-size:14px;line-height:22px;"><**** border="1" cellspacing="0" cellpadding="0" width="98%" ****="width:715px;"><****><****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64.05pt;background:#cccccc;">平均厚度 mm****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">电气强度 MV/m****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64pt;background:#cccccc;">厚度 mm****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">电气强度 MV/m****>****><****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64.05pt;background:#cccccc;">0.4****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥16.9****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64pt;background:#cccccc;">1.6****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥12.7****>****><****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64.05pt;background:#cccccc;">0.5****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥16.1****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64pt;background:#cccccc;">1.8****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥12.2****>****><****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64.05pt;background:#cccccc;">0.6****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥15.6****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64pt;background:#cccccc;">2.0****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥11.8****>****><****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64.05pt;background:#cccccc;">0.7****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥15.2****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64pt;background:#cccccc;">2.2****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥11.4****>****><****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64.05pt;background:#cccccc;">0.8****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥14.8****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64pt;background:#cccccc;">2.4****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥11.1****>****><****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64.05pt;background:#cccccc;">0.9****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥14.5****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64pt;background:#cccccc;">2.5****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥10.9****>****><****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64.05pt;background:#cccccc;">1.0****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥14.2****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64pt;background:#cccccc;">2.6****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥10.8****>****><****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64.05pt;background:#cccccc;">1.2****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥13.7****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64pt;background:#cccccc;">2.8****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥10.5****>****><****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64.05pt;background:#cccccc;">1.4****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥13.2****><**** valign="top" width="85" ****="border-color:#ece9d8;padding:0cm;width:64pt;background:#cccccc;">3.0****><**** valign="top" width="187" ****="border-color:#ece9d8;padding:0cm;width:140.2pt;background:#cccccc;">≥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****><**** class="xxmscon" ****="color:#404040;font-family:宋体;font-size:14px;line-height:22px;"><**** border="1" cellspacing="0" cellpadding="0" width="100%" ****="margin:auto auto auto 1.15pt;width:656px;"><****><****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background:#cccccc;">试样厚度平均值 mm****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background:#cccccc;">吸水性 mg****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background:#cccccc;">试样厚度平均值 mm****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background:#cccccc;">吸水性 mg****>****><****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">0.4****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤17****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">5****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤25****>****><****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">0.5****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤17****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">6****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤27****>****><****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">0.6****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤17****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">8****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤31****>****><****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">0.8****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤18****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">10****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤34****>****><****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">1.0****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤18****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">12****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤38****>****><****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">1.2****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤18****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">14****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤41****>****><****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">1.6****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤19****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">16****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤46****>****><****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">2.0****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤20****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">20****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤52****>****><****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">2.5****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤21****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">25****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤61****>****><****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">3****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤22****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">单面加工至22.5****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤73****>****><****><**** valign="top" width="216" ****="border-color:#ece9d8;padding:0cm;width:161.85pt;background-color:****ansparent;">4****><**** valign="top" width="99" ****="border-color:#ece9d8;padding:0cm;width:73.9pt;background-color:****ansparent;">≤23****><**** valign="top" width="99" ****="border-bottom-color:#ece9d8;padding:0cm;border-top-color:#ece9d8;width:73.9pt;border-right-color:#ece9d8;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。 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。 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。 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。 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%)。 在现行市场信息如此透明的今天,在同行中我们比质量,比价格,比服务。 温馨提示:买产品请选择生产厂家,售后服务有保证。 |