端羧基聚丁二烯固化胶的力学性能  

Mechanical properties of cured carboxyl terminated polybutadiene adhesive

作　　者：齐永新[1] 陈继明[1] 陈建敏[2] 易建军[1] 孟凡宁[1] 胡少坤[1] 陈磊[2] 周健松[2] 

机构地区：[1]中国石油兰州石化公司研究院,兰州730060 [2]中国科学院兰州化学物理研究所,兰州730000

出　　处：《合成橡胶工业》2018年第1期27-30,共4页China Synthetic Rubber Industry

摘　　要：以三(2-甲基-1-氮丙啶)氧化膦(MAPO)为固化剂,研究了端羧基聚丁二烯预聚物(CTPB)的官能度与其固化胶力学性能之间的关系,并以纳米三氧化二铝作为填充剂,考察了其用量对CTPB固化胶微观形貌、力学性能及动态力学性能等的影响。结果表明,CTPB官能度与其固化胶扯断伸长率呈明显的正相关,随官能度增大固化胶的扯断伸长率明显升高;纳米三氧化二铝的加入可有效提升CTPB固化胶的力学性能,填充量为40份(质量)时固化胶的拉伸强度及扯断伸长率均有明显增大。CTPB的装药应用结果表明,在扯断伸长率相同的情况下,官能度为1.9的CTPB固化胶的拉伸强度较官能度为1.5者要高1.00 MPa。The relationship between the functio- nality of earboxyl terminated polybutadiene （CTPB） prepolymer and the mechanical properties of cured CTPB adhesive was studied with （2-methyl-l-aziri- dinyl） phosphine oxide （MAPO） as curing agent, and the effects of loading level of nano Al2O3 filler on the micromorphology, mechanical and dynamic mechanical properties of cured CTPB adhesive were investigated. The results showed that there was a ob- vious positive correlation between the functionality of CTPB and elongation at break of cured CTPB adhe- sive. With increasing functionality, elongation at break increased significantly. Nano Al2O3 filler effi-ciently improved the mechanical properties of cured CTPB adhesive, and both the tensile strength and elongation at break increased significantly at nano Al2O340 phr （mass）. The results of propellant charge application with CTPB as adhesive showed that the tensile strength of cured CTPB with func- tionality 1. 9 was 1. 00 MPa more than that with functionality 1.5 at the same value of elongation at break.

关 键 词：端羧基聚丁二烯 固化胶 官能度 力学性能 动态力学性能 

分 类 号：TQ333.99[化学工程—橡胶工业]