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Polymers 2017, 9(6), 200; doi:10.3390/polym9060200

Performance and Kinetics Study of Self-Repairing Hydroxyl-Terminated Polybutadiene Binders Based on the Diels–Alder Reaction

School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
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Received: 11 May 2017 / Revised: 26 May 2017 / Accepted: 26 May 2017 / Published: 30 May 2017
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Abstract

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. View Full-Text
Keywords: Diels–Alder reaction; hydroxyl-terminated polybutadiene; binder; self-repairing; solid propellant Diels–Alder reaction; hydroxyl-terminated polybutadiene; binder; self-repairing; solid propellant
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Liang, C.; Li, J.; Xia, M.; Li, G.; Luo, Y. Performance and Kinetics Study of Self-Repairing Hydroxyl-Terminated Polybutadiene Binders Based on the Diels–Alder Reaction. Polymers 2017, 9, 200.

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