本征型自修复高聚物粘结炸药的制备与损伤愈合性能

为减轻高聚物粘结炸药(PBX)由于力、热等环境因素所产生的微裂纹等损伤对于其性能与使用寿命的影响，根据颗粒填充高分子复合材料的结构特性，设计合成了含DA键的本征型自修复高聚物粘结剂，以期实现PBX内部损伤的自主修复。研究结果表明，采用含可逆DA共价键的TAPE-DAPU为粘结剂，设计制备的PBX材料具有较强的损伤愈合能力，当损伤较轻时，该PBX的强度恢复率超过95%，对于较严重的贯穿性损伤，其修复效率也在65%以上。 

Preparation and damage healing behavior of intrinsic self-repairing polymeric bonded explosives

In order to reduce the influence of microcracks and other damages caused by environmental factors such as force and heat on the performance and service life of polymeric bonded explosives (PBX), an intrinsic self-repairing polymer binder containing DA bonds was designed and synthesized to realize autonomous healing of PBX internal damage according to the structural characteristic of particle filled polymer composites. The research results show that using TAPE-DAPU containing reversible DA covalent bonds as binder, the designed and prepared PBX material has good damage-healing ability. When the damage in PBX is slight, the strength recovery rate of the PBX exceeds 95%, while the repair efficiency is also above 65% for relatively severe penetrating damage.