浇注高聚物粘结炸药的粘结剂体系设计及其应用研究

Design and Application of Binder System for Castable Polymer Bonded Explosive

为提高端羟基聚丁二烯(HTPB)基浇注高聚物粘结炸药(PBX)的固相含量、力学性能,并降低渗油性,采用己二酸二辛酯和壬酸异癸酯为原料,根据溶度参数近似原理设计了一种复合增塑剂AI.基于HTPB/AI粘结剂体系制备出固相含量达到90%的浇注PBX,研究了PBX的机械感度、热分解、固相含量等与粘结剂体系的关系。结果表明:复合增塑剂AI降低了HTPB胶片的模量,从而降低了PBX的机械感度;AI降低了浇注PBX药浆黏度,提高了固相含量,从而提升了能量水平;对原材料进行高温真空旋蒸处理,降低了原材料中水分等杂质的含量,从而降低了PBX的渗油性,提高了复合增塑剂的安定性及其与PBX配方中其他组分的相容性。

In order to improve the solid content and mechanical properties,and decrease the plasticizer migration of hydroxyl terminated polybutadiene（HTPB） based castable polymer bonded explosive（PBX）,a compound plasticizer（AI） was designed according to the approximation principle of solubility parameter using dioctyl adipate and isodecyl pelargonate as substances.The solid phase content of castable PBX based on HTPB/AI binder system reachs 90% using conventional practice.The influence of binder system on mechanical sensitivity,compatibility,performance and other properties were investigated.The results show that AI decreases the tensile modulus of HTPB film,thus decreasing its mechanical sensitivity.The viscosity at the end of mix of PBX slurry is decreased and the performance is improved due to the high solid content.Vacuum high temperature rotary evaporation of raw materials removes impurities and keeps plasticizer from leakage with the ideal compatibility.