碳纤维增强类玻璃环氧高分子复合材料闭环回收利用

doi:10.13475/j.fzxb.20210905306

纺织学报 ›› 2022, Vol. 43 ›› Issue (01): 15-20.doi: 10.13475/j.fzxb.20210905306

碳纤维增强类玻璃环氧高分子复合材料闭环回收利用

李博¹^,², 樊威¹^,²(), 高兴忠¹^,², 王淑娟³, 李志虎¹^,²

1.西安工程大学纺织科学与工程学院, 陕西西安 710048
2.西安工程大学功能性纺织材料及制品教育部重点实验室, 陕西西安 710048
3.西安交通大学化学学院, 陕西西安 710049

收稿日期:2021-09-15 修回日期:2021-11-05 出版日期:2022-01-15 发布日期:2022-01-28
通讯作者: 樊威
作者简介:李博(1996—),男,硕士生。主要研究方向为树脂基复合材料。
基金资助:
国家自然科学基金项目(52073224);国家自然科学基金项目(52173080);国家重点研发计划项目(2019YFA0706801);西北工业大学超高温结构复合材料重点实验室基金项目(6142911200310);西北工业大学超高温结构复合材料重点实验室基金项目(6142911200205);陕西省创新能力支撑计划项目(2020PT-043);陕西省自然科学基础研究计划项目(2021JQ-659)

Carbon fiber reinforced epoxy based vitrimer composite material closed-loop recycling

LI Bo¹^,², FAN Wei¹^,²(), GAO Xingzhong¹^,², WANG Shujuan³, LI Zhihu¹^,²

1. School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China
2. Key Laboratory of Functional Textile Material and Product, Ministry of Education, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China
3. School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China

Received:2021-09-15 Revised:2021-11-05 Published:2022-01-15 Online:2022-01-28
Contact: FAN Wei

摘要/Abstract

摘要：

为解决连续碳纤维增强树脂基复合材料(CFRP)回收再利用效率低、回收组分单一的问题,采用甲基四氢邻苯二甲酸酐、四氢邻苯二甲酸酐、催化剂乙酰丙酮锌和环氧树脂,制备出一种高性能的类玻璃环氧高分子树脂及其复合材料,经乙二醇参与酯交换反应,在180 ℃温度下对复合材料进行闭环回收。对原树脂、碳纤维和CFRP以及回收后的树脂、碳纤维和利用回收后树脂和碳纤维制备的CFRP的表观结构、热稳定性以及力学性能进行表征与分析。结果表明:该回收方法可完全回收和再加工复合材料的树脂与碳纤维;回收后树脂拉伸强度保持率为90.1%,碳纤维单丝拉伸强度保持率为98.9%,CFRP的弯曲强度和剪切强度保持率分别为86.2%和86.7%。

关键词: 碳纤维, 复合材料, 碳纤维增强树脂基复合材料, 闭环回收, 再加工

Abstract:

In order to solve the problem of low recycling efficiency and single recycling component of continuous carbon fiber reinforced resin matrix composite material (CFRP), methyl tetrahydrophthalic anhydride, tetrahydrophthalic anhydride, catalyst zinc acetylacetonate and epoxy resin were used to prepare a high-performance epoxy based vitrimer resin and its composite material. A closed-loop recycling was conducted involving the transesterification reaction of ethylene glycol (EG) at 180 ℃. Ethylene glycol participates in the transesterification reaction, and the composite material is recovered in a closed loop at 180 ℃. The apparent structure, thermal stability and mechanical properties of raw resin, carbon fiber and CFRP, recovered resin, carbon fiber and CFRP prepared from recovered resin and recovered carbon fiber were characterized and analyzed. The results show that the recoverying method can completely recover and reprocess the resin and carbon fiber of the composite material. After recycling, the retention rate of the tensile strength of the resin is 90.1%, the retention rate of the tensile strength of the carbon fiber monofilament is 98.9%, and the retention rate of the flexural strength and shear strength of CFRP are 86.2% and 86.7%, respectively.

Key words: carbon fiber, composite material, carbon fiber reinforced resin matrix composite material, closed-loop recycling, reprocessing

中图分类号:

TB332

李博, 樊威, 高兴忠, 王淑娟, 李志虎. 碳纤维增强类玻璃环氧高分子复合材料闭环回收利用[J]. 纺织学报, 2022, 43(01): 15-20.

LI Bo, FAN Wei, GAO Xingzhong, WANG Shujuan, LI Zhihu. Carbon fiber reinforced epoxy based vitrimer composite material closed-loop recycling[J]. Journal of Textile Research, 2022, 43(01): 15-20.

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碳纤维增强类玻璃环氧高分子复合材料闭环回收利用

Carbon fiber reinforced epoxy based vitrimer composite material closed-loop recycling

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