| 变压器绝缘材料应用特性 |
| 添加时间：2019/3/26 16:25:09 浏览次数： |
| 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。 1. Various forms. Various systems of resins, curing agents and modifiers can almost meet the requirements of various applications, ranging from very low viscosity to high melting point solids. 2、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、 相比，在固化过程中显示出很低的收缩性(小于 2% )。 酚醛树脂 2. Low contractility. The reaction between epoxy resin and curing agent used is carried out by direct addition reaction or ring opening polymerization of epoxy group in resin molecule, without water or other volatile by-products. Compared with unsaturated polyester resin, they exhibit very low shrinkage during curing (less than 2%). phenolic resin 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。 3. Strong adhesion. The inherent polar hydroxyl groups and ether bonds in the molecular chain of feiqicc.37ix.com.cnfeiqicl.37ix.com.cnbianpinqi.37ix.com.cndiaoke.37ix.com.cnshidiaodx.37ix.com.cn shidiaofx.37ix.com.cnepoxy resin make it have high adhesion to various substances. The shrinkage of epoxy resin during curing is low and the internal stress produced is small, which also helps to improve the adhesion strength. 4、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。4. Convenient curing. With different curing agents, the epoxy resin system can be cured in the temperature range of 0 - 180 C. 5、力学性能。固化后的环氧树脂体系具有优良的力学性能。 5. Mechanical properties. The cured epoxy resin system has excellent mechanical properties. |
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