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

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

doi:10.3969/j.issn.0438-1157.2014.10.055

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

更新时间：2025-12-10

- Synthesis and characterization of block copolymers of poly(silane arylacetylene) and poly(siloxane arylacetylene)
- CIESC Journal Issue 10, Pages: 4168-4175(2014)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.10.055
  CLC： Q323.1
- Online First：05 October 2014，
  
  Published：05 October 2014
- 稿件说明：
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WANG Qiang, YANG Jianhui, YUAN Qiaolong, et al. Synthesis and characterization of block copolymers of poly(silane arylacetylene) and poly(siloxane arylacetylene)[J]. CIESC Journal, 2014, (10): 4168-4175.
DOI：

WANG Qiang, YANG Jianhui, YUAN Qiaolong, et al. Synthesis and characterization of block copolymers of poly(silane arylacetylene) and poly(siloxane arylacetylene)[J]. CIESC Journal, 2014, (10): 4168-4175. DOI： 10.3969/j.issn.0438-1157.2014.10.055.

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。

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.

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