三官能度NIMMO-THF共聚醚含能粘合剂的合成与固化  

Synthesis and Curing of Tri-functionality NIMMO-THF Copolyether Energetic Binder

作　　者：王晓川[1] 卢先明[1] 莫洪昌[1] 徐明辉[1] 舒远杰[1] 刘宁[1] WANG Xiao-chuan;LU Xian-ming;MO Hong-chang;XU Ming-hui;SHU Yuan-jie;LIU Ning(Xi′an Modern Chemistry Research Institute,Xi′an 710065,China)

机构地区：[1]西安近代化学研究所

出　　处：《含能材料》2019年第7期603-608,I0006,共7页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金资助(51373159)

摘　　要：以三羟甲基丙烷(TMP)为引发剂,三氟化硼·乙醚络合物为催化剂,使四氢呋喃(THF)和3-硝酸酯甲基-3-甲基氧杂环丁烷(NIMMO)开环聚合,得到了三官能度的3-硝酸酯甲基-3-甲基氧杂环丁烷与四氢呋喃的无规共聚醚(三官能度NIMMO-THF共聚醚)含能粘合剂。采用红外光谱、核磁共振和差示扫描量热(DSC)对产物进行了表征。以六亚甲基二异氰酸酯(HDI)为固化剂固化合成的三官能度NIMMO-THF共聚醚含能粘合剂,按照六亚甲基二异氰酸酯的异氰酸根与三官能度NIMMO-THF共聚醚含能粘合剂羟基的物质的量之比(R值)分别为0.8、0.9、1.0、1.1和1.2制备出了弹性体,研究了弹性体的力学性能和热性能。结果表明,10℃·min^-1时,三官能度NIMMO-THF共聚醚含能粘合剂DSC的分解峰温在216℃;当R值为1.1时,弹性体拉伸强度最高,为1.32MPa,10℃·min^-1时,弹性体DSC的分解峰温为203℃。Tri-functional random copolyether of NIMMO and THF(tri-functionality NIMMO-THF copolyether)energetic binder was synthesized by the ring opening polymerization of NIMMO(3-nitratomethyl-3-methyloxetane)and THF(tetrahydrofuran)using trimethylolpropane(TMP)as initiator,boron trifluoride ether complex BF3·OEt2 ascatalyst. The products were characterized by infrared spectroscopy,nuclear magnetic resonance and differential scanning calorimetry(DSC). Taking tri-functionality NIM - MO-THF copolyether energetic binder curried and synthesized by hexamethylenediisocynate(HDI)as curing agent,a series of elastomers were prepared according to the molar ratio of ─NCO of hexamethylenediisocynate(HDI)to ─OH of tri-functionality NIMMO-THF(R value)as R=0.8,0.9,1.0,1.1,1.2 respectively. The mechanical properties and thermal properties of elastomers were investigated. The results show that the temperature of exothermic peak of the tri-functionality NIMMO-THF copoly-ether energetic binder obtained by DSC at 10 ℃·min^-1 is 216 ℃. When R value is 1.1,the tensile strength of the elastomer is the highest,which is 1.32 MPa and the temperature of exothermic peak of the elastomer obtained by DSC at 10 ℃·min^-1 is 203 ℃.

关 键 词：含能粘合剂 共聚醚 六亚甲基二异氰酸酯 固化 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O62[理学—有机化学]