Performance and Kinetics Study of Self-Repairing Hydroxyl-Terminated Polybutadiene Binders Based on the Diels-Alder Reaction
Performance and Kinetics Study of Self-Repairing Hydroxyl-Terminated Polybutadiene Binders Based on the Diels-Alder Reaction
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DOI：
10.3390/polym9060200
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发表时间：
2017-06-01
期刊：
影响因子：
5
通讯作者：
Luo, Yunjun
中科院分区：
文献类型：
--
作者：
Liang, Chuyao;Li, Jie;Luo, Yunjun
基于Diels-Alder反应和固体推进剂端羟基聚丁二烯（HTPB）粘合剂，设计合成了两种新型端糠基聚丁二烯（FTPB）和三糠基丙烷（TFP），并对其结构进行了表征。以FTPB为主体树脂，N，N '-1，3-亚苯基双马来酰亚胺（PIPE）为固化剂，TFP为扩链剂，形成了一种新型的可逆Diels-Alder反应体系。结果表明，该体系具有良好的力学性能，固化后的拉伸强度为1.76MPa，拉伸应变为284%，裂纹修复效率为88%。因此，它可以作为一种新型的粘结剂的含能材料，如固体推进剂和PBX炸药，使它们具有自修复特性，提高使用的可靠性。
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.