氯化锌乙醇溶液回收炭纤维/环氧树脂复合材料  

Recovery of carbon fibers from carbon fiber /epoxy composites by epoxy degradation with concentrated zinc chloride in ethanol

作　　者：刘影[1,2] 邓天昇 吕春祥[1] 蔡榕[1] 侯相林[1] 

机构地区：[1]中国科学院山西煤炭化学研究所,山西太原030001 [2]中国科学院大学,北京100049

出　　处：《新型炭材料》2014年第5期363-368,共6页New Carbon Materials

基　　金：山西省科技攻关(工业)项目(20130322005-01)~~

摘　　要：采用高浓度氯化锌乙醇溶液为反应体系,高效催化降解环氧树脂基炭纤维(CF/EP)复合材料并回收炭纤维。考察反应温度与氯化锌浓度对树脂基体降解的影响,探讨环氧树脂在氯化锌乙醇溶液中的催化降解机理。结果表明,复合材料中的树脂基体完全降解,炭纤维表面微观结构基本不变,且回收炭纤维的强度最高为原始炭纤维强度的97.1%,但表面含氧官能团有所减少。Concentrated zinc chloride in ethanol was used to decompose the epoxy in carbon fiber/epoxy （ CF/EP） composites to recover carbon fibers. Factors affecting the degradation rate such as reaction temperature and zinc chloride concentration were inves-tigated. The properties of the products decomposed by epoxy and the recovered carbon fibers were characterized. Results indicated that the molecular weight of the decomposed epoxy decreased and its solubility in ethanol increased with the reaction time. A signifi-cant fraction of the C-O bonds in epoxy is broken down by the degradation. The strength of the recovered fibers is 97. 1% of the original ones and their microstructure was only slightly changed, but the amount of the oxygen-containing functional groups on the surface of the recovered fibers decreased.

关 键 词：炭纤维 复合材料 回收 催化降解 配位不饱和锌离子 

分 类 号：TB332[一般工业技术—材料科学与工程]