摘要
用分子动力学(MD)和介观动力学(MesoDyn)法模拟研究了粘合剂3,3-二叠氮甲基氧丁环-四氢呋喃共聚醚(PBT)与A3[双(2,2-二硝基丙醇缩甲醛(A2)与双(2,2-二硝基丙醇)缩乙醛(A1)质量比1∶1混合物]、端叠氮基聚叠氮缩水甘油醚(GAPA)等不同增塑剂组成的共混体系的溶度参数和共混物分子间的Flory-Huggins作用参数,预测了共混物的相容性和介观形貌。结果表明:室温下PBT/A3共混体系,增塑比为1.4时体系的相容性最好;对增塑比为1.2的PBT/A3/GAPA共混物,PBT/A3/GAPA配比为10/2/10体系的相容性最好。
The molecular dynamics （MD） and mesoscopic dynamics （Mesodyn） simulations were performed to investigate the solubility parameters and Flory-Huggins interaction parameter of 3, 3-diazidomethyloxetane- tetrahydrofuran copolymers （PBT） with different plasticizers blends including A3 [the mixture of 1：1 of bis （2,2- dinitropropyl） acetal （A2） and bis （2, 2-dinitropropyl） formal （A1） ] and azide group terminal glycidyl azide polymer （GAPA） in this paper. The compatibility and microphase morphology of PBT/A3 and PBT/A3/GAPA blends were predicted. The results showed that at room temperature the compatibility was best when the plasticizing ratio of 1.4 for the PBT/A3 blends, and the PBT/A3/GAPA （10/2/10 mass ratio） system had the excellent compatibility for PBT/A3/GAPA blends with the olasticizin~ ratio of 1.2.
出处
《上海航天》
2015年第4期63-67,共5页
Aerospace Shanghai
