文献类型：期刊文献

英文题名：Mild chemical recycling of aerospace fiber/epoxy composite wastes and utilization of the decomposed resin

作者：Liu, Tuan[1] Zhang, Meng[1,2] Guo, Xiaolong[1] Liu, Chengyun[1] Liu, Tian[1] Xin, Junna[1] Zhang, Jinwen[1]

第一作者：Liu, Tuan

通信作者：Zhang, JW[1]

机构：[1]Washington State Univ, Sch Mech & Mat Engn, Composite Mat & Engn Ctr, Pullman, WA 99164 USA;[2]Chinese Acad Forestry, Jiangsu Prov Key Lab Biomass Energy & Mat Jiangsu, Inst Chem Ind Forest Prod, Natl Engn Lab Biomass Chem Utilizat, Nanjing, Jiangsu, Peoples R China

年份：2017

卷号：139

起止页码：20-27

外文期刊名：POLYMER DEGRADATION AND STABILITY

收录：;EI(收录号：20171303493719);Scopus(收录号：2-s2.0-85016029546);WOS:【SCI-EXPANDED(收录号:WOS:000401397600002)】；

基金：The Authors are grateful for the financial support from the Joint Center for Aerospace Technology Innovation (JCATI).

语种：英文

外文关键词：Carbon fiber; Composite; Waste recycling; Thermosetting resin; Epoxy; Degradation; Mechanical property; Chemical recycling; Glass transition; Zinc chloride

摘要：Carbon fiber reinforced polymers (CFRPs) with high T-g (>200 degrees C) are indispensable for aerospace industry where high service temperature is required. Chemical recycling of the matrix polymers for these CFRP composites is more difficult than that of their low T-g analogues. In this work, an efficient approach for mild chemical recycling of CFRP with a T-g of similar to 210 degrees C was developed using a ZnCl2/ethanol catalyst system. The high efficiency of ZnCl(2)(/)ethanol was attributed to the strong coordination effect of ZnCl2 with the C-N bonds and the strong swelling ability of ethanol, which worked together to break down the chemical bonds of the cross-linked polymer. Also, mild degradation temperature (<200 degrees C) imparted little damage to the recovered fibers. The decomposed matrix polymer (DMP) was in the oligomer form and contained multifunctional reactive groups. When DMP was used as a reactive ingredient and added up to 15 wt% to the preparation of new epoxy materials, the resulting cross-linked polymers could still retain the high strength and modulus compared to the neat polymer without addition of DMP. (C) 2017 Elsevier Ltd. All rights reserved.