高性能环氧树脂基体的研究进展  

Research Progress on High-functional Epoxy Resin Matrix

作　　者：张丽[1] 李楠[1] 张媛媛[1] 左瑾瑜 陈剑冰[1] 崔天放[1] 

机构地区：[1]沈阳化工大学应用化学学院,沈阳110142

出　　处：《材料导报（纳米与新材料专辑）》2013年第2期242-244,共3页

基　　金：辽宁省教育厅科技计划项目(L2010431);国家级大创计划项目(201210149010)

摘　　要：环氧树脂具有优异的力学性能和粘接性能,然而其存在质脆、韧性差、固化时产生内应力等缺点,需要通过改性来拓展其应用领域。介绍了聚氨酯改性增韧、热致型液晶高分子改性增韧环氧树脂的最新研究进展,并展望了其发展前景。聚氨酯具有高弹性、耐磨、抗撕裂等特点,与环氧树脂相容性好;热致型液晶高分子改性环氧树脂固化体系既融合了液晶的有序性又保留了环氧树脂网络交联的特点,其韧性、冲击强度大幅度提高,而耐热性不降低。利用聚氨酯、热致型液晶高分子改性环氧树脂能显著提高其力学性能,实现其在众多领域的应用。Epoxy resin has excellent mechanical properties and adhesive properties.It also possesses some disadvantages,such as brittleness,poor toughness and internal stress curing generated during curing,limiting its application fields.Research development in epoxy toughening,which include polyurethane toughening epoxy resin and thermotropic liquid crystal polymer toughening epoxy resin is reviewed.Also,the prospects of modified epoxy resin are addressed.Polyurethane possesses the characteristics of high flexibility,abrasion resistance,tear resistance,good compatibility with epoxy resin; and the thermal type liquid crystal polymer modified epoxy resin curing system is the integration of LCD order and keeps the characteristics of the epoxy resin cross-linked network,which greatly improve the toughness and impact strength,without reducing the heat resistance.Therefore,the modification of epoxy resin using polyurethane,thermotropic liquid crystal polymer can significantly improve its mechanical properties,realize its application in many fields.

关 键 词：高性能环氧树脂 改性 聚氨酯 热致型液晶高分子 增韧 

分 类 号：O633[理学—高分子化学]