文献类型：期刊文献

英文题名：Synthesis of star-shaped epoxy resin with excellent mechanical properties using triazine as a skeleton

作者：Qiao, Fangke[1];Ji, Jiawei[1];Zhao, Chuanqing[1];Wang, Fan[1];Deng, Shifeng[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Specially Funct Polymer Mat & Related Tech, Minist Educ, Shanghai, Peoples R China

年份：2024

卷号：141

期号：32

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20242216184021);WOS:【SCI-EXPANDED(收录号:WOS:001230605700001)】；

基金：This work was supported by the Fundamental Research Funds for the Central Universities (JKD01241701).

语种：英文

外文关键词：mechanical properties; star-shaped epoxy resin; triazine

摘要：The high-performance development of advanced resin matrix composites has resulted in higher requirements for the mechanical strength and toughness of epoxy resin matrices. However, enhancing the toughness of the epoxy resin while maintaining its mechanical strength remains a considerable challenge. In this study, we utilized triazine rings as the skeleton, and introduced flexible chain segments and other forces into the polymer cross-linked network to fabricate a star-shaped epoxy resin (CNE) with exceptional mechanical properties. Benefiting from its meticulously designed rigid-flexible integrated structure, after curing by 4,4 '-diaminodiphenylmethane (DDM), it demonstrated outstanding mechanical properties. The storage modulus of CNE/DDM was measured at up to 5.48 GPa; moreover, its tensile modulus and strength went as high as 5.04 GPa and 134.72 MPa respectively, and it also exhibited an elongation at break of up to 3.35%. The mechanical properties of CNE/DDM are far superior to those of AFG-90 (N,N-diglycidyl-4-glycidyloxyaniline)/DDM. Over all, the findings of this study thus provide an effective synthesis pathway toward achieving epoxy resins with high modulus, strength, and toughness. We prepared a star-shaped epoxy resin CNE with triazine ring as the skeleton. The tensile modulus and strength are 5.04 GPa and 134.72 MPa respectively, and the elongation at break is as high as 3.35%, which is characterized by high modulus, high strength, and high toughness, making it an ideal base material in the field of advanced resin matrix composites. image