架空导线用纤维增强复合芯棒拉挤树脂研制

 采用自行研制的多官能缩水甘油胺-醚型环氧树脂、液态酸酐固化剂为基本原料,引入原位分相增韧技术,制备的架空导线用树脂基纤维增强复合芯棒拉挤树脂具有混合黏度低、可使用期较长、高温固化速度快、拉挤工艺性好等特点,用其拉挤成型的复合芯棒表面光洁、综合强度高、耐高温、生产效率高。通过加入复合促进剂避免了快速成型过程高温反应集中放热,降低了体系内应力,可满足复合芯棒拉挤制品机械强度与快速成型工艺性能要求。

Development on epoxy pultrusion resin used in composite cable cores

With the self-developed multi-functional glycidyl amine-ether epoxy resin, a liquid acid anhydride, and a modified aromatic amine curing agent as the basic raw materials, a high-temperature resistant epoxy pultrusion composite matrix resin for overhead wires composite mandrel has been produced. This resin has good pultrusion process performance such as lower viscosity, longer pot life in room temperature, and fast curing at high temperature. The above advantages ensure the resin and fibers infiltrate well in the high speed pultrusion process. By introducing complex accelerator and the situ split-phase toughening technique, the internal stress generated by the fast curing process is effectively decreased; therefore, the pultrusion composites have high strength, high-temperature resistance.