Liang Chuyao, Li Jie, Xia Min, Li Guoping, Luo Yunjun
School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
Polymers (Basel). 2017 May 30;9(6):200. doi: 10.3390/polym9060200.
Based on the Diels⁻Alder reaction and hydroxyl-terminated polybutadiene (HTPB) binders of solid propellants, two novel compounds-furfuryl-terminated polybutadiene (FTPB) and trifurfuryl propane (TFP)-were designed and synthesized, and their structures were characterized. A new kind of reversible Diels⁻Alder reaction system was formed by FTPB as main resin, N,N'-1,3-phenylenedimaleimide (PDMI) as curing agent and TFP as chain extender. The results showed that this system had good mechanical properties with a tensile strength of 1.76 MPa and a tensile strain of 284% after curing, and the repair efficiency of the crack was 88%. Therefore, it could be used as a novel binder of energetic materials such as solid propellant and PBX explosives to provide them with self-repairing characteristics and improve the reliability for application.
基于双烯加成反应以及固体推进剂的端羟基聚丁二烯（HTPB）黏合剂，设计并合成了两种新型化合物——糠基封端聚丁二烯（FTPB）和三糠基丙烷（TFP），并对其结构进行了表征。以FTPB为主树脂、N,N'-1,3-苯二甲撑双马来酰亚胺（PDMI）为固化剂、TFP为扩链剂，形成了一种新型的可逆双烯加成反应体系。结果表明，该体系具有良好的力学性能，固化后拉伸强度为1.76 MPa，拉伸应变达284%，裂纹修复效率为88%。因此，它可作为固体推进剂和PBX炸药等含能材料的新型黏合剂，赋予它们自修复特性，提高应用可靠性。
