EFFECT OF HOMOGENINZING ON THE INTERFACE ANDPROPERTIES OF EP/GF COMPOSITES

Abstract

Abstract: The epoxy resin with its curing agent of dicyandiamide+polyurea was homogenized with self-made solvent to get a uniform resin system. The micro-debonding method was used to study the formation of microspheres and interfacial shear strength before and after homogenization. The result showed that the uniformity of the resin on the micro scale was distinctly improved after homogenization. Before homogenization, the interfacial shear strength was increased with the diameter of the resin microspheres, and the average strength was relatively low. However, after homogenization, there was no obvious correlation between the diameter of microspheres and the interfacial shear strength. In the meantime, the average strength increased by 39%. It was found that the stability of the composite improved correspondingly.

Key words: epoxy resin, curing agent, homogenizing, interface micro-debonding

CLC Number:

TB332

LI Ya-feng, GUO Miao-cai, HONG Xu-hui. EFFECT OF HOMOGENINZING ON THE INTERFACE ANDPROPERTIES OF EP/GF COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2019, 0(10): 106-111.

References

[1]胡玉明, 吴良义. 固化剂. 北京: 化学工业出版社, 2004.
[2] 洪旭辉, 华幼卿. 3221中温固化环氧树脂体系的固化反应.高分子材料科学与工程, 2006, 22(5): 58-61.
[3] 郭妙才, 洪旭辉, 李亚锋. 非均相固化体系对复合材料树脂微观力学均匀性的影响. 材料工程, 2018, 46(10): 142-148.
[4] 陈平, 陆春, 于祺, 等. 纤维增强热塑性树脂基复合材料界面研究进展. 材料科学与工艺, 2007(5): 665-669.
[5] 王耀先, 程树军. 高性能有机纤维增强复合材料的界面粘结性能研究. 玻璃钢/复合材料, 2012(增刊): 25-29.
[6] 曹淑伟, 张大海, 管艳丽, 等. 玻璃纤维表面处理技术研究进展. 宇航材料工艺, 2009(1): 5-7.
[7] 刘颖, 宋伟, 于水, 等. 玻纤浸润剂组分对环氧基复合材料界面性能的影响. 玻璃纤维, 2013(3): 1-5.
[8] 孙静. 玻璃纤维与树脂的润湿性研究. 重庆: 重庆理工大学, 2011.
[9] 朱明明, 李敏, 武清, 等.温度条件对碳纤维上浆剂与双马树脂反应及其复合材料界面粘接的影响. 航空学报, 2014, 35(9): 2624-2631.
[10] Zhandarov S, Mader E. Characterization of fiber/matrix interface strength: applicability of different tests, approaches and parameters. Composites Science and Technology, 2005, 65(1): 149-160.
[11] Zhandarov S, Mader E,Yurkevicm O R. Indirect estimation of fiber/polymer bond strength and interfacial friction from maximum load values recorded in the microbond and pull-out tests. Part 1: Loacal bond strength. Journal of adhesion Science and Technology, 2002, 16(9): 1171-1200.
[12] 朱凤朝, 马志, 战强. 微球脱粘测试实验设备研究. 机械工程与自动化, 2013(10): 83-85.
[13] 王孝军, 赵小川, 严峡, 等. 塑性树脂/纤维复合材料界面强度检测方法. 材料工程, 2008(增刊1)(SAMPE China 2008): 313-315, 319.
[14] Nishikawa M, Okabe T, Hemmi T, et al. Micromechanical modeling of the microbond test to quantify the interfacial properties of fiber-reinforced composites. International Journal of Solids and Structures, 2008, 45(14): 4098-4113.
[15] Mader E, Zhou X F, Pisanova E, et al. Characterisation of the interfacial bond strength between glass fiber and epoxy resin using the pull-out and push-out techniques. Advanced Composites Letters, 2000, 9(3): 203-209.
[16] Kharrat M, Dammak M, Trabelsi M. Finite element analysis of load transfer at a fiber-matrix interface during pull-out loading. Journal of Adhesion Science and Technology, 2007, 21(8): 725-734.