Dendritic poly(silylene arylacetylene) resins based on 1,3,5-triethynylbenzene

被引：27
|
作者：
Luo, Jiawei [1 ]
Liu, Xiaotian [1 ]
Ma, Manping [1 ]
Tang, Junkun [1 ]
Huang, Farong [1 ]
机构：
[1] East China Univ Sci & Technol, Key Lab Specially Funct Mat & Related Technol, Minist Educ, Shanghai 200237, Peoples R China
来源：
EUROPEAN POLYMER JOURNAL | 2020年 / 129卷
关键词：
1,3,5-Triethynylbenzene; Dendritic poly(silylene arylacetylene); High modulus resin; HYPERBRANCHED POLYMERS; AROMATIC-GROUPS; MAIN-CHAIN; ACETYLENE; POLYMERIZATION; COPOLYMERS;
D O I：
10.1016/j.eurpolymj.2020.109628
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Dendritic poly(silylene arylacetylene) resins based on 1,3,5-triethynylbenzene were synthesized through Grignard reaction. The influences of the content of 1,3,5-triethynylbenzene on the properties of the resin including processability, mechanical properties, heat resistance and thermal stability are studied. Results show that dendritic poly(silylene arylacetylene) resins possess good processability and high mechanical properties while maintaining excellent heat-resistance and thermal stability. The viscosity of dendritic poly(silylene arylacetylene) resins at 90 degrees C are below 200 mPa.s, and the flexural modulus of the cured DPSA-43H resin is up to 12.65 GPa. The degradation temperatures at 5% weight loss and the residue yield at 800 degrees C of the cured resins in nitrogen are all above 700 degrees C and 93%, respectively.
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页数：9
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