文献类型：期刊文献

英文题名：Synthesis and properties of poly(silylene bis(ethynylphenoxy)diphenylsulfone)

作者：Li, Chuan[1];Han, Gang[1];Ma, Manping[1];Tang, Junkun[1];Huang, Farong[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci Engn, Key Lab Specially Funct Mat & Related Technol, Shanghai 200237, Peoples R China

年份：2023

卷号：80

期号：1

起止页码：349

外文期刊名：POLYMER BULLETIN

收录：;EI(收录号：20220511546757);WOS:【SCI-EXPANDED(收录号:WOS:000746290700001)】；

基金：The authors gratefully acknowledge the support of the Fundamental Research Funds for the Central Universities (No. JKD01211701).

语种：英文

外文关键词：Poly(silylene arylacetylene) resins with aromatic ether structure; Bis(ethynylphenoxy) diphenylsulfone; Heat-resistant resins; High-performance resin for advanced composite

摘要：Poly(silylene arylacetylene) resins have good mechanical properties and excellent heat resistance. In this paper, bis(ethynylphenoxy) diphenylsulfone (BEPS) was synthesized by Williamson and Sonogashira reactions. Furthermore, a series of poly(silylene ethynylenephenoxy diphenylsulfone) (PSEF) resins were synthesized from BEPS and various silanes with different substituents (-H, -CH3, -C6H5, -CH=CH2) through Grignard reagent method. The structures and properties of synthesized resins were characterized. The properties of carbon fiber-reinforced PSEF (T300/PSEF) composites were measured. The results indicate that the PSEF resins demonstrate high mechanical properties with excellent heat resistance and the substituents on the main chain of PSEF resin would slightly affect the thermal properties of the resin, but greatly affect the processing and mechanical properties. The PSEF with phenyl substituent (P-PSEF) shows the best processability and mechanical performance with a T-d5 of 437 degrees C. The T300/P-PSEF composite has a flexural strength of 620.9 MPa at room temperature and no glass transition in the range of rt similar to 450 degrees C. [GRAPHICS] .