T700碳纤维/环氧树脂复合材料热降解实验研究

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (11): 56-61.

T700碳纤维/环氧树脂复合材料热降解实验研究

金鑫,隋刚^*,杨小平

北京化工大学有机无机复合材料国家重点实验室,北京100029

收稿日期:2017-05-12 出版日期:2017-11-28 发布日期:2017-11-28
通讯作者: 隋刚(1972-),男,教授,主要从事复合材料方面的研究,suigang@mail.buct.edu.cn。
作者简介:金鑫(1991-),男,硕士,主要从事复合材料及降解回收利用方面的研究。
基金资助:
国家自然科学基金(U1664251) 作者简介:金鑫(1991-),男,硕士,主要从事复合材料及降解回收利用方面的研究。

RESEARCH OF THE THERMAL DEGRADATION OF T700 CARBON FIBER RESIN MATRIX COMPOSITES

JIN Xin, SUI Gang^*, YANG Xiao-ping

State Key Laboratory of Organic-Inorganic composites, Beijing University of Chemical Technology,Beijing 100029, China

Received:2017-05-12 Online:2017-11-28 Published:2017-11-28

摘要/Abstract

摘要： 针对T700碳纤维增强环氧树脂复合材料的热降解行为以及回收所得碳纤维的力学性能进行了研究。研究结果表明,碳纤维的存在增加了环氧树脂降解时所需的活化能,热降解反应的温度、时间和气氛等因素对环氧树脂基体降解效果以及回收碳纤维力学性能均有影响。在空气条件下500 ℃处理30 min后碳纤维表面没有残留物,但其回收纤维的拉伸强度保留率仅为77.6%。通过首先在氮气气氛高温短时热处理,再在空气气氛下450 ℃进行30 min热降解的两步法处理后,碳纤维表面残炭得到去除,回收碳纤维的拉伸强度保留率达到了90.4%,由其制备单向复合材料的层间剪切强度保留率可达到75.8%。

关键词: 碳纤维, 环氧树脂, 复合材料, 热降解, 动力学

Abstract: In this paper, the research of the pyrolysis process of T700 carbon fiber reinforced epoxy resin composites was carried out. The results show that carbon fiber has increased the activation energy required for epoxy resin degradation. The reaction temperature, time and atmosphere factors had affects on the degradation effect of epoxy resin matrix and tensile properties of recycling carbon fiber. There was no residue on the surface of carbon fiber after 30 min pyrolysis at 500 ℃ in air condition, but the retention rate of tensile strength was only about 77.6%. Through the first heat treatment in nitrogen atmosphere at high temperature for a short time, and the second treatment that was pyrolysis at 450 ℃ for 30 min in air, the residual carbon on the surface of carbon fiber were removed. The tensile strength of recycling carbon fiber retention rate reached 90.4% and the interlaminar shear strength of unidirectional composites retention rate can reach 75.8%.

Key words: carbon fiber, epoxy resin, composites, pyrolysis, kine

中图分类号:

TB332

金鑫,隋刚,杨小平. T700碳纤维/环氧树脂复合材料热降解实验研究[J]. 玻璃钢/复合材料, 2017, 0(11): 56-61.

JIN Xin, SUI Gang, YANG Xiao-ping. RESEARCH OF THE THERMAL DEGRADATION OF T700 CARBON FIBER RESIN MATRIX COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2017, 0(11): 56-61.

参考文献

[1] 陈土杰. 碳纤维复合材料的应用[J] . 科技、经济、市场, 2012(3): 20-21.
[2] Gao Y, Yangyang L I, Wang B, et al. Application of Advanced Resin Matrix Composites in Aeroengine and Its Research Progress[J] . Aeronautical Manufacturing Technology, 2016.
[3] Chen S. Application of Carbon Fiber Composite Materials[J] . Fine Chemical Industrial Raw Materials & Intermediates, 2012.
[4] 董博. 复合材料及碳纤维复合材料应用现状[J] . 辽宁化工, 2013, 42(5): 552-554.
[5] 刘建叶, 宋金梅, 彭玉刚, 等. 热固性碳纤维复合材料废弃物回收及再利用现状[J] . 化工新型材料, 2014(8): 216-218.
[6] 段志军, 段望春, 张瑞庆. 国内外复合材料回收再利用现状[J] . 塑料工业, 2011 (1): 14-18.
[7] Pickering S J. Recycling technologies for thermoset composite materials-current status[J] . Composites Part A Applied Science & Manufacturing, 2006, 37(8): 1206-1215.
[8] Oliveux G, Dandy L O, Leeke G A. Current status of recycling of fibre reinforced polymers: Review of technologies, reuse and resulting properties[J] . Progress in Materials Science, 2015, 72: 61-99.
[9] Pimenta S, Pinho S T. Recycling carbon fibre reinforced polymers for structural applications: Technology review and market outlook[J] . Waste Management, 2011, 31(2): 378-392.
[10] 徐平来. 碳纤维/环氧树脂复合材料的化学降解行为研究[D] . 北京: 中国科学院研究生院, 2012.
[11] 冯楠. 回收碳纤维增强尼龙6复合材料的制备及性能研究[D] . 北京: 北京化工大学, 2013.
[12] Sánchez-Jiménez P E, Criado J M. Kissinger kinetic analysis of data obtained under different heating schedules[J] . Journal of Thermal Analysis and Calorimetry, 2008, 94(2): 427-432.
[13] Janowski B, Pielichowski K. A Kinetic Analysis of the Thermo-Oxidative Degradation of PU/POSS nanohybrid Elastomers[J] . Silicon, 2016, 8(1): 65-74.
[14] Rajeshwari P. Kinetic analysis of the non-isothermal degradation of high-density polyethylene filled with multi-wall carbon nanotubes[J] . Journal of Thermal Analysis and Calorimetry, 2016, 123(2): 1-22.
[15] Zhang Y, Wang X, Ning P, et al. Weibull analysis of the tensile behavior of fibers with geometrical irregularities[J] . Journal of Materials Science, 2002, 37(7): 1401-1406.