丁羟推进剂用改性硼酸酯键合剂的合成与应用

Synthesis and Application of Modified Borate Ester Bonding Agent for HTPB Propellant

针对丁羟四组元（高氯酸铵／黑索今／Al／端羟基聚丁二烯，AP／RDX／Al／HTPB）复合固体推进剂存在的力学性能差的问题，选用己二酸和1，4-Tz醇为原料，合成了低分子量聚己二酸丁二醇酯（PBA），以二乙醇胺与丙烯酸甲酯反应合成了N，N-二羟乙基-3-胺基丙酸甲酯，并用FT．IR、GPC、1HNMR、GC—MS表征了其结构。以N，N-二羟乙基-3-胺基丙酸甲酯为外连单体，以PBA为互联单体，硼酸三正丁酯为原料合成了改性硼酸酯键合剂（BEBA）。将BEBA作为丁羟四组元推进剂的键合剂进行装药试验，结果表明：当固化参数为1．01，交联参数为0．22，BEBA与JH03（另一种键合剂）复配比例为0．08／0．04时，丁羟四组元推进剂的高（70℃）、常（20℃）、低（-40℃）温力学性能最佳。

As the poor mechanical properties of four-component hydroxy-terminated polybutadiene（HTPB） propellant （ammonium perchlo- ratelhexogenlAllHTPB, APIRDXlAIIHTPB）, a modified borate ester bonding agent（BEBA） was synthesized using N,N-dihydroxyethyl-3- amino methyl propionate as the external connection monomer, polybutylene adipate（PBA） with low molecular mass as interconnec- tion monomer, and tributyl borate as material. Polybutylene adipate（PBA） was synthesized using adipic acid and I ,4-butanediol as materials, and N, N-dihydroxyethyl-3-amino methyl propionate was synthesized from diethanolamine and methyl acrylate. Their structures were characterized by FT-IR, GPC, 1^ H NMR, and GC-MS. The application of modified BEBA as bonding agent for fourcomponent HTPB propellant shows that with the curing parameter of 1. 01, the crosslinking parameter of 0.22, and the mass ratio between BEBA and JH03 of 0. 08/0.04, the mechanical properties of the four-component HTPB propellant are the best at high （70 ℃）, constant（20 ℃） and low（-40 ℃） temperatures.