硅烷芳炔-硅氧烷芳炔嵌段共聚物的合成与表征

doi:10.3969/j.issn.0438-1157.2014.10.055

化工学报 ›› 2014, Vol. 65 ›› Issue (10): 4168-4175.DOI: 10.3969/j.issn.0438-1157.2014.10.055

• 材料化学工程与纳米技术 • 上一篇下一篇

硅烷芳炔-硅氧烷芳炔嵌段共聚物的合成与表征

汪强, 杨建辉, 袁荞龙, 黄发荣, 杜磊

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

收稿日期:2014-03-10 修回日期:2014-05-09 出版日期:2014-10-05 发布日期:2014-10-05
通讯作者: 黄发荣
基金资助:
上海市重点学科资助项目（B502）。

Synthesis and characterization of block copolymers of poly(silane arylacetylene) and poly(siloxane arylacetylene)

WANG Qiang, YANG Jianhui, YUAN Qiaolong, HUANG Farong, DU Lei

Key Laboratory for Specially Functional Polymeric Materials and Related Technology of Ministry of Education (East China University of Science and Technology), Shanghai 200237, China

Received:2014-03-10 Revised:2014-05-09 Online:2014-10-05 Published:2014-10-05
Supported by:
supported by Shanghai Leading Academic Discipline Project(B502).

摘要/Abstract

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T_d5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。

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

Abstract: A series of block copolymers of poly(silane arylacetylene) and poly(siloxane arylacetylene) (SiO-b-PSA) were synthesized by the condensation reactions of m-diethynylbenzene magnesium reagents with various a,w-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.

Key words: Si-containing arylacetylene resin, siloxane-arylacetylene resin, block copolymer, high temperature polymer, composites, polymerization, chemical reaction

中图分类号:

TQ323.1

汪强, 杨建辉, 袁荞龙, 黄发荣, 杜磊. 硅烷芳炔-硅氧烷芳炔嵌段共聚物的合成与表征[J]. 化工学报, 2014, 65(10): 4168-4175.

WANG Qiang, YANG Jianhui, YUAN Qiaolong, HUANG Farong, DU Lei. Synthesis and characterization of block copolymers of poly(silane arylacetylene) and poly(siloxane arylacetylene)[J]. CIESC Journal, 2014, 65(10): 4168-4175.

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硅烷芳炔-硅氧烷芳炔嵌段共聚物的合成与表征

Synthesis and characterization of block copolymers of poly(silane arylacetylene) and poly(siloxane arylacetylene)

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