Ma Mingming, Wang Xiuyun, Yu Zhuoer, Wan Liqiang, Huang Farong
Key Laboratory of Specially Functional Polymeric Materials and Related Technology of the Ministry of Education, East China University of Science and Technology, Shanghai, China.
Research & Development Center, Xi'an Aerospace Composites Research Institute, Xi'an, China.
Des Monomers Polym. 2020 May 5;23(1):50-58. doi: 10.1080/15685551.2020.1761584. eCollection 2020.
Three azido-terminated poly(ethylene glycol) macromonomers (ATPEGs) were synthesized from poly(ethylene glycol)s (PEGs) and characterized. The extended polytriazole (EPTA) resins were prepared from the macromonomers, azide and alkyne monomers. Toughening effect of PEGs on polytriazole resins was analyzed by means of mechanical, thermal and electronic microscope characterization. The results show that molecular weight and content of ATPEGs have great influence on the thermal and mechanical properties of cured EPTA resins. The impact strength of cured EPTA resins increases with the increase of the amount and molecular weight of ATPEGs. The flexural strength and heat resistance of cured EPTA resins decrease with the increase of addition amount and molecular weight of ATPEGs. High impact EPTA resins were obtained.
由聚乙二醇（PEG）合成了三种叠氮基封端的聚乙二醇大分子单体（ATPEG）并对其进行了表征。由这些大分子单体、叠氮化物和炔烃单体制备了扩链聚三唑（EPTA）树脂。通过力学、热学和电子显微镜表征分析了PEG对聚三唑树脂的增韧效果。结果表明，ATPEG的分子量和含量对固化后EPTA树脂的热性能和力学性能有很大影响。固化后EPTA树脂的冲击强度随ATPEG用量和分子量的增加而增加。固化后EPTA树脂的弯曲强度和耐热性随添加量和分子量的增加而降低。得到了高冲击EPTA树脂。
