高断裂伸长率环氧树脂体系的研究  

Study on epoxy resin systems with high elongation at break

作　　者：张孝阿[1] 张军营[1] 

机构地区：[1]北京化工大学材料科学与工程学院胶接材料与原位固化技术研究室,北京100029

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

基　　金：国家自然科学基金(20376006)资助

摘　　要：在环氧树脂(EP)体系中引入大分子聚醚胺固化剂(D-2000、T-5000)或柔韧性EP(DER-732、EPI-CLON830、133L),并研究了改性剂的种类、用量对EP体系拉伸性能和粘接性能的影响。研究结果表明,大分子聚醚胺和柔韧性EP的加入明显提高了EP体系的断裂伸长率;添加大分子聚醚胺的最佳体系为E-51/D-400/D-2000体系,当w(D-2000)=30份时,断裂伸长率为53.6%、拉伸强度为17.8MPa;添加柔韧性EP的最佳体系为E-51/DER-732/D-400体系,当w(DER-732)=25份时,断裂伸长率可达130%、拉伸强度为13.0MPa;高断裂伸长率EP体系粘接铝材的拉伸剪切强度为25MPa左右。The high molecular polyetheramines curing agent （such as D-2000 and T-5000） and flexible epoxy resin（EP）（such as DER-732, EPICLON 830, 133L） were introduced into EP systems, and the influence of modifier species and content were studied on tensile performance and bonding performance for EP systems. The research results showed that the introduced high molecular polyetheramines and flexible EP could remarkably enhance elongation at break of EP systems. The optimum system with high molecular polyetheramines was E-51/ D-400/D-2000 system, the elongation at break and the tensile strength were 53.6% and 17.8 MPa respectively when mass fraction of D-2000 was 30 phr. The optimum system with flexible EP was E-51/DER-732/D-400 system, the tensile strength and the elongation at break were 13.0 MPa and above 130% respectively when mass fraction of DER-732 was 25 phr. The tensile shear strength of EP systems with high elongation at break was about 25 MPa for bonding aluminum.

关 键 词：高断裂伸长率环氧树脂体系 大分子聚醚胺 固化剂 柔韧性 粘接性能 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业] TQ433.437