文献类型：期刊文献

中文题名：硅烷芳炔-硅氧烷芳炔嵌段共聚物的合成与表征

英文题名：Synthesis and characterization of block copolymers of poly(silane arylacetylene) and poly(siloxane arylacetylene)

作者：汪强[1];杨建辉[1];袁荞龙[1];黄发荣[1];杜磊[1]

机构：[1]特种功能高分子材料及其相关技术教育部重点实验室(华东理工大学),上海200237

年份：2014

卷号：65

期号：10

起止页码：4168

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：20144400135724);Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：上海市重点学科资助项目(B502)~~

语种：中文

中文关键词：含硅芳炔树脂;硅氧烷芳炔树脂;嵌段共聚物;耐高温树脂;复合材料;聚合;化学反应

外文关键词：Si-containing arylacetylene resin;siloxane-arylacetylene resin;block copolymer;high temperature polymer;composites;polymerization;chemical reaction

摘要：合成了不同链段长度的卤代硅氧烷,并用其与间二乙炔基苯格氏试剂反应,合成了两种硅烷芳炔-硅氧烷芳炔嵌段共聚物(SiO-b-PSA),并制成碳纤维增强树脂复合材料。利用红外光谱(FT-IR)、核磁共振氢谱(1H NMR)、凝胶渗透色谱(GPC)、旋转流变、差示扫描量热分析(DSC)、热失重分析(TGA)和悬梁臂冲击实验对共聚物及其复合材料的结构和性能进行表征。研究结果表明所合成的共聚物具有优良的耐热性和韧性,硅烷芳炔-硅氧烷芳炔嵌段共聚物在氮气气氛下的Td5高于513℃,1000℃残留率高于78.9%,硅烷芳炔-硅氧烷芳炔嵌段共聚物/碳纤维复合材料的冲击强度高达(30.92±0.44)kJ·m-2。
A series of block copolymers of poly（silane arylacetylene） and poly（siloxane arylacetylene） （SiO-b-PSA） were synthesized by the condensation reactions ofm-diethynylbenzene magnesium reagents with variousα,ω-bis（chloro）dimethylsiloxanes. Carbon fiber reinforced composites were prepared through compression molding. The structures and properties of the resins and composites were characterized by FT-IR, 1H NMR, GPC, DSC, TGA and mechanical tests. The copolymers had good heat resistance and toughness. The copolymers also showed excellent processability that could be cured at below 200℃. The cured resins possessed high thermal and thermooxidative stability. Their thermo-decomposition occurred at above 513℃ in N2. Impact strength of the composites arrived at as high as（30.92±0.44） kg·m-2.