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Self-Healing of HTPB Based Polyurethane Binder via Ring Opening Metathesis Polymerization
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2022-07-06 , DOI: 10.1002/prep.202100383 Akash Dhas 1 , Kavita Ghosh 2 , Shaibal Banerjee 1
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2022-07-06 , DOI: 10.1002/prep.202100383 Akash Dhas 1 , Kavita Ghosh 2 , Shaibal Banerjee 1
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The self-healing capability of Hydroxyl Terminated Polybutadiene (HTPB) based polyurethane binder via Ring Opening Metathesis Polymerization(ROMP) is reported. Microencapsulated healing agent Dicyclopentadiene (DCPD) and wax protected Ru-based Grubbs catalyst were incorporated in binder matrix (i.e,HTPB) uniformly to heal the cracks. These healing agents were also incorporated into HTPB matrix individually to check healing properties on their own and thereafter cured for five days. The incorporation of these healing agents in binder matrix did not affect the curing of matrix. It was found out that cuts when applied to the matrix were self-healed at room temperature. Mechanical testing have revealed that around 50 % of tensile strength was regained in the healed specimen.
中文翻译：
HTPB基聚氨酯粘合剂开环复分解聚合的自修复
报道了端羟基聚丁二烯（HTPB）基聚氨酯粘合剂通过开环复分解聚合（ROMP）的自修复能力。将微胶囊修复剂双环戊二烯（DCPD）和蜡保护的Ru基Grubbs催化剂均匀地掺入粘合剂基质（即HTPB）中以修复裂缝。这些愈合剂也单独加入到 HTPB 基质中，以自行检查愈合特性，然后固化五天。在粘合剂基质中加入这些愈合剂不影响基质的固化。发现当应用于基质时，切口在室温下自愈。机械测试表明，愈合后的试样恢复了大约 50% 的拉伸强度。
更新日期：2022-07-06
中文翻译：
HTPB基聚氨酯粘合剂开环复分解聚合的自修复
报道了端羟基聚丁二烯（HTPB）基聚氨酯粘合剂通过开环复分解聚合（ROMP）的自修复能力。将微胶囊修复剂双环戊二烯（DCPD）和蜡保护的Ru基Grubbs催化剂均匀地掺入粘合剂基质（即HTPB）中以修复裂缝。这些愈合剂也单独加入到 HTPB 基质中，以自行检查愈合特性，然后固化五天。在粘合剂基质中加入这些愈合剂不影响基质的固化。发现当应用于基质时，切口在室温下自愈。机械测试表明，愈合后的试样恢复了大约 50% 的拉伸强度。
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