Degradation Mechanism of CF/EP Composites in Supercritical n-Butanol with Alkali Additives

被引：18

作者：

Huang, Haihong ^{[1
]}

Yin, Yanzhen ^{[1
]}

Cheng, Huanbo ^{[1
]}

Zhao, Zhipei ^{[1
]}

Zhang, Baoyu ^{[1
]}

机构：

[1] Hefei Univ Technol, Sch Mech Engn, Hefei 230009, Peoples R China

来源：

JOURNAL OF POLYMERS AND THE ENVIRONMENT | 2017年 / 25卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Supercritical n-butanol; CF/EP composites; Guerbet reaction; Degradation mechanism; CARBON-FIBERS; EPOXY-RESIN;

D O I：

10.1007/s10924-016-0776-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

CF/EP (carbon fibre/epoxy resin) composites were degraded by supercritical n-butanol with alkali additive KOH in a batch reactor. The catalytic degradation mechanism of the composites was investigated based on the analysis of liquid phase products by GC-MS and solid phase products by FTIR. The results indicate that alkali additive (KOH) can promote Guerbet reaction and increase hydrogen donor capability of supercritical n-butanol. The H-center dot can combine promptly with the free radical formed by the scission of linear and crosslinked chains in epoxy resin to generate the liquid products, including phenol, 4-isopropylphenol, 4-(2-methylallyl)phenol and other derivatives of benzene and phenol. The combination of supercritical n-butanol with alkali additive is an effective way to degrade and recycle CF/EP composites.

引用

页码：115 / 125

页数：11

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