聚氨酯柔性固化剂的合成及增韧环氧树脂的研究  

Study on synthesis of flexible polyurethane curing agent and toughening epoxy resin

作　　者：修玉英[1] 汪青[1] 罗钟瑜[1] 

机构地区：[1]华南理工大学材料科学研究所,广东广州510641

出　　处：《中国胶粘剂》2008年第1期1-3,11,共4页China Adhesives

摘　　要：运用分子设计的方法合成出了端胺基聚氨酯(ATPU)结构的聚氨酯柔性固化剂,用FT-IR表征了ATPU的分子结构,通过DSC和TG等表征了ATPU/EP固化过程的特性及固化产物的性能。结果表明,红外光谱分析证实了ATPU的结构符合分子设计要求;ATPU/EP固化体系相对于未改性的乙二胺/EP固化体系,其柔韧性和抗冲击性都有很大提高;ATPU/EP固化物在热分解后期表现出更好的热稳定性。Flexible polyurethane curing agent with the structure of amino-terminated polyurethane（ATPU）was synthesized by molecular designing. The molecular structure of ATPU and the property of ATPU/EP curing process as well as curing product were characterized by FT-IR, DSC and TG. The mechanical properties show that the flexibility and impact strength of ATPU/EP curing product was increased largely and showed better heat resistance at later phase of heat decomposition compared with the system that was not modified.

关 键 词：柔性固化剂 端胺基聚氨酯 增韧 环氧树脂 

分 类 号：TQ314.256[化学工程—高聚物工业] TQ323.5