文献类型：期刊文献

英文题名：Study on vinyl crosslinking and related properties of silicon-containing arylacetylene resin synthesised by zinc powder catalysis

作者：Dong, Sensen[1];Chen, Fan[1];Wang, Guihui[1];Hu, Wei[1];Zhao, Chuanqing[1];Hu, Yanhong[1];Deng, Shifeng[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Specially Funct Polymer Mat & Related Tec, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：34

期号：5

起止页码：581

外文期刊名：HIGH PERFORMANCE POLYMERS

收录：;EI(收录号：20221411906806);WOS:【SCI-EXPANDED(收录号:WOS:000776005500001)】；

基金：The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the Fundamental Research Funds for the Central Universities (JKD01211701).

语种：英文

外文关键词：silicon-containing arylacetylene resin; zinc powder catalyst; initiator; vinyl crosslinking; heat resistance

摘要：A matrix resin poly(silicon-containing arylacetylene vinyl)s (PSAV) containing vinyl at both branch and terminal chains underwent synthesis via the zinc powder catalytic method using m-diacetylene benzene and dichloromethylvinylsilane as raw materials. Vinyl in the PSAV resin was crosslinked by the free radical initiator dibenzoyl peroxide to obtain a crosslinked network structure resin (PSAV-L). This approach sought to improve the thermal properties and other related properties of the matrix resin. A series of tests, such as rotated rheometer, FTIR, DSC, TGA, Py-GC-MS and universal testing machine, characterised processing property, curing behaviour, thermal properties and mechanical properties. The rheological curve shows that PSAV-L resin has a wide processing window (40-134.5 degrees C), endowing the resin with excellent processing performance. Thermal curing behaviour indicates that PSAV-L resin can start curing at a lower temperature, namely, 32 degrees C earlier than PSAV resin. TGA analysis shows that the degradation temperature at 5% weight loss (T-d5) of PSAV-L resin stands at 579.4 degrees C, 45.4 degrees C higher than that of PSAV resin due to the fact that the crosslinking of vinyl gives PSAV-L resin a network structure. The flexural strength, flexural modulus and ILSS of the quartz fibre cloth reinforced PSAV-L resin composite (QF/PSAV-L) are 184.68 MPa, 15.50 GPa and 12.40 MPa. The PSAV-L resin exhibits the comprehensive properties of good processing performance, low curing temperature, excellent thermal performance and high mechanical properties.