含能增塑剂对PBT弹性体微相分离及力学性能的影响  

Effect of energetic plasticizer on microphase separation and mechanical properties of PBT elastomer

作　　者：李士刚 马文秀 朱辛育 温彦威 吴晨颖 左海丽 詹国柱 翟杰明 LI Shigang;MA Wenxiu;ZHU Xinyu;WEN Yanwei;WU Chenying;ZUO Haili;ZHAN Guozhu;ZHAI Jieming(The 6th Military Representative Office of HZ in Shanghai,Shanghai 201109,China;Shanghai Space Propulsion Technology Research Institute,Huzhou 313000,China)

机构地区：[1]海装驻上海地区第六军事代表室,上海201109 [2]上海航天动力技术研究所,湖州313000

出　　处：《固体火箭技术》2023年第6期824-832,共9页Journal of Solid Rocket Technology

基　　金：国家自然科学基金联合基金(U22B20138)。

摘　　要：采用红外光谱(IR)、力学性能测试等方法研究了含能增塑剂丁基硝氧乙基硝胺(Bu-NENA)和双(2,2-二硝基丙基)缩甲醛/双(2,2-二硝基丙基)缩乙醛混合物(BDNPF/A,两者质量比为1∶1)对3,3-二叠氮甲基氧丁环/四氢呋喃共聚醚(PBT)弹性体微相分离和力学性能的影响。结果表明,Bu-NENA对PBT弹性体的微相分离影响较大,随增塑比的增大,游离羰基比例提高,同时有序氢键化羰基比例显著减小,增塑比为1.0时有序氢键化羰基比例几乎为0,导致弹性体抗拉强度显著降低;BDNPF/A对PBT弹性体的微相分离特性则没有明显影响。两种含能增塑剂复配时,随着复配增塑剂中BD-NPF/A比例的增加,弹性体的抗拉强度随之增大。The effects of energetic plasticizers Bu-NENA and BNNPF/A on the micro phase separation and mechanical proper-ties of PBT elastomer were studied by means of infrared spectroscopy(IR)and mechanical property test.The results show that Bu-NENA has a great influence on the micro phase separation of PBT elastomer.With the increase of plasticizing ratio,the proportion of free carbonyl groups increases,while the proportion of ordered hydrogen bonded carbonyl groups decreases significantly.When the plasticizing ratio is 1.0,the proportion of ordered hydrogen bonded carbonyl groups is almost zero,resulting in a significant decrease in the tensile strength of the elastomer.BDNPF/A has no obvious effect on the micro phase separation characteristics of PBT elasto-mer.When two energetic plasticizers are mixed,the tensile strength of the elastomer increases with the increase of BDNPF/A ratio in the mixed plasticizer.

关 键 词：PBT弹性体 Bu-NENA BDNPF/A 微相分离 力学性能 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]