酸化石墨烯改性环氧树脂及其碳纤维复合材料力学性能研究

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (5): 33-40.

酸化石墨烯改性环氧树脂及其碳纤维复合材料力学性能研究

于倩倩, 陈刚, 郑志才, 崇琳

中国兵器工业集团第五三研究所,济南250031

收稿日期:2017-11-02 出版日期:2018-05-20 发布日期:2018-05-20
作者简介:于倩倩(1983-),女,硕士,高级工程师,主要从事碳纤维复合材料力学性能及应用方面的研究, yuqianqian8882003@126.com。
基金资助:
新一代****装备预研背景项目(****材料应用技术),保密项目

STUDY OF MECHANICAL PROPERTIES OF ACIDIFICATION GRAPHENEMODIFIED EPOXY RESIN AND ITS CARBON FIBER COMPOSITE

YU Qian-qian, CHEN Gang, ZHENG Zhi-cai, CHONG Lin

China North Industries Group Institute 53, Ji’nan 250031, China

Received:2017-11-02 Online:2018-05-20 Published:2018-05-20

摘要/Abstract

摘要： 针对石墨烯在复合材料增强增韧上的应用,对石墨烯进行了酸化处理,采用超声分散方法制备酸化石墨烯/环氧树脂(EP)浇注体,并在此基础上制备了酸化石墨烯/碳纤维(CF)/环氧树脂(EP)复合材料。分别利用红外光谱和透射电镜表征了酸化石墨烯表面结构和微观形貌,利用拉伸、弯曲、冲击等机械测试手段评价了酸化石墨烯改性EP和CF-EP的力学性能,并利用扫描电镜对复合材料拉伸断面形貌进行观察。试验结果表明:石墨烯酸化处理后,成功在表面引入了羟基、羧基等极性基团;酸化石墨烯可对EP和CF/EP进行有效增强增韧,当其添加量为0.2wt%时,EP拉伸强度和冲击强度分别提高了23.3%和109.8%,CF/EP拉伸强度、弯曲强度分别提高了6.0%和10.6%,当酸化石墨烯添加量为0.5wt%时,CF/EP复合材料层间剪切强度提高了7.4%。微观形貌分析表明,酸化石墨烯对CF/EP增强改性主要是通过对EP进行增强增韧,同时提高CF和EP之间的界面性能来实现的。

关键词: 酸化石墨烯, 改性, EP, CF/EP, 力学性能

Abstract: In this paper, for the application of graphene on toughening of composite, the acidification of graphene was conducted. Then, acidification graphene/epoxy resin (EP) casting was prepared by ultrasonic dispersion. Subsequently, acidification graphene/ carbon fiber (CF)/epoxy resin (EP) composites were prepared by compression molding. The surface structure and morphology of acidication graphene were characterized by IR and TEM. Mechanical properties of graphene modified EP and CF-EP were evaluated by mechanical test methods such as stretching, bending and impact. And scanning electron microscopy (SEM) was used to observe the morphology of the tensile section of the composites. The results show that the polar groups such as hydroxyl and carboxyl groups were successfully introduced into the surface of the graphene after acidizing treatment. Acidified graphene can effectively strengthen and toughen EP and CF/EP. When the content of acidified graphene was 0.2wt%, EP tensile strength and impact strength increased by 23.2% and 109.8%, respectively. The tensile strength and the flexural strength of CF/EP composites increased were by 6.0% and 10.6%, respectively. When the addition amount was 0.5wt%, the ILSS of CF/EP composites were increased by 7.4%. The microstructure analysis showed that acidified graphene can enhance CF/EP, which is mainly achieved by strengthening and toughening the EP, which simultaneously improve the interfacial properties between CF and EP.

Key words: acidified graphene, modification, EP, CF/EP, mechanical properties

中图分类号:

TB332

于倩倩, 陈刚, 郑志才, 崇琳. 酸化石墨烯改性环氧树脂及其碳纤维复合材料力学性能研究[J]. 玻璃钢/复合材料, 2018, 0(5): 33-40.

YU Qian-qian, CHEN Gang, ZHENG Zhi-cai, CHONG Lin. STUDY OF MECHANICAL PROPERTIES OF ACIDIFICATION GRAPHENEMODIFIED EPOXY RESIN AND ITS CARBON FIBER COMPOSITE[J]. Fiber Reinforced Plastics/Composites, 2018, 0(5): 33-40.

参考文献

[1] 金浩. 石墨烯偶联剂修饰及其对碳纤维复合材料界面性质的影响[D]. 天津:天津工业大学, 2014.
[2] Stankovich S, Dikin D A, Dommett G H B, et al. Graphene-based composite materials[J]. Nature, 2006, 442(7100): 282-286.
[3] 王永凯. 石墨烯/环氧树脂复合材料的制备与性能研究[D]. 郑州: 郑州大学, 2013.
[4] 田继斌, 梁胜彪, 隋刚, 等. 羧基化多壁碳纳米管对T-1000碳纤维/环氧树脂复合材料性能的影响[J]. 玻璃钢/复合材料, 2010(1):36-39.
[5] A. K. Geim, K. S. Novoselov. The rise of graphene[J]. Nature Materials, 2007(6):183-191.
[6] 梅启林, 袁露, 王继辉, 等. 酸化处理对纳米碳纤维及其复合材料性能的影响[J]. 玻璃钢/复合材料, 2009(1):23-26.
[7] 邱军, 王宗明. 无机功能材料改性双马来酰亚胺树脂的研究进展[J]. 玻璃钢/复合材料, 2011(4):64-67.
[8] 邓富泉, 张丽, 杨松, 等. 氧化石墨烯有序排列对碳纤维增强环氧树脂复合材料低温性能影响[J]. 高分子材料科学与工程, 2017, 33(7):38-44.
[9] Rafiee M A, Rafiee J, Wang Z, et al. Enhanced mechanical proper-ties of nanocomposites at low graphene content[C]//ACS Nano. 2009(3): 3884.
[10] QIU J, WANG S. Enhancing polymer performance through graphene sheets[J]. Journal of Applied Polymer Science, 2011,119(6): 3670-3674.
[11] Ramanathan T, Abdala A A, Stankovich S. Functionalized graphene sheets for polymer nanocomposites [J]. Nature Nanotechnology, 2008, 3(6): 327-331.
[12] 孙建明,肇研,申雄刚. 氧化石墨烯/CCF300增强环氧树脂复合材料的力学性能研究[C]//第十五届中国科协年会第17分会场:复合材料与节能减排研讨会论文集2013年. 中国科学技术协会、贵州省人民政府, 2013:1-5.
[13] 崔兴智,王昕,聂金林. 石墨烯改性EP/CF复合材料的制备及压缩性能研究[J]. 工程塑料应用, 2014, 42(5): 20-25.
[14] 陈建剑,俞科静,钱坤, 等. 石墨烯改性环氧树脂/碳纤维复合材料拉伸性能的研究[J]. 化工新型材料,2012, 40(9): 63-66.
[15] S.Chatterjee, J.W.Wang, W.S.Kuo, et a1. Mechanical reinforcement and thermal conductivity in expanded graphene nanoplatelets rein-forced epoxy composites[J]. Chemical Physics Letters, 2012, 531: 6-10.