文献类型：期刊文献

英文题名：Effect of the linking positions on the benzene ring on properties of poly(silane arylether arylacetylene)s

作者：Li, Jixian[1];Lv, Shuaikang[1];Gong, Changjun[1];Zhou, Yan[1];Huang, Farong[1]

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

年份：2022

卷号：60

期号：23

起止页码：3232

外文期刊名：JOURNAL OF POLYMER SCIENCE

收录：;EI(收录号：20223512673772);WOS:【SCI-EXPANDED(收录号:WOS:000843461500001)】；

基金：Fundamental Research Funds for the Central Universities, Grant/Award Number: JKD01221701

语种：英文

外文关键词：high performance resin; linking position effect; poly(silane arylether arylacetylene)s; the relationship between structure and property

摘要：Three aromatic diynes with para-, meta-, and ortho-oxyphenyloxy structures and dichlorodimethylsilane were used to prepare the corresponding poly(silane arylether arylacetylene) (PSEA) resins, that is, ppp-PSEA, pmp-PSEA, and pop-PSEA, and effect of the linking positions on the benzene ring on properties of PSEA resins was explored. The results show that pmp-PSEA and pop-PSEA resins exhibit lower crystallinity but better processability as compared with ppp-PSEA resin. For the cured PSEA resins, the density increases but the maximum water uptake decreases with the change in the linking position of the benzene ring from para-position to meta-position followed by ortho-position. Cured pmp-PSEA and pop-PSEA resins possess higher mechanical property in comparison with cured ppp-PSEA resin. The cured pop-PSEA resin shows the highest flexural strength (68.4 MPa) and flexural modulus (2.75 GPa). Furthermore, three cured resins possess excellent heat resistance with the decomposition temperature (T-d5) of over 505 degrees C.