固化剂体系均质化对EP/GF复合材料界面性能的影响

玻璃钢/复合材料 ›› 2019, Vol. 0 ›› Issue (10): 106-111.

固化剂体系均质化对EP/GF复合材料界面性能的影响

李亚锋^1,2, 郭妙才^1,2, 洪旭辉^1,2*

1.中航工业复合材料技术中心,北京101300;
2.北京航空材料研究院先进复合材料重点实验室,北京100095

收稿日期:2018-12-26 出版日期:2019-10-28 发布日期:2019-10-28
通讯作者: 洪旭辉(1965-),女,博士,研究员,主要从事结构功能复合材料方面的研究,hongxuhui2003@163.com。
作者简介:李亚锋(1979-),女,硕士,高级工程师,主要从事结构功能复合材料方面的研究。

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

LI Ya-feng^1,2, GUO Miao-cai^1,2, HONG Xu-hui^1,2*

1.AVIC Composite Technology Center, Beijing 101300, China;
2.Key Laboratory of Advanced Composites, Beijing Institute of Aeronautical Materials, Beijing 100095, China

Received:2018-12-26 Online:2019-10-28 Published:2019-10-28

摘要/Abstract

摘要： 采用自制溶剂对以双氰胺+聚脲为固化体系的环氧树脂(EP)进行了均质化处理,采用微球脱粘法对均质化前后树脂浸渍高强玻璃纤维(GF)形成的微球形态、界面剪切强度等进行了表征。研究表明均质化后树脂微球微观尺度上的均匀性明显提高。均质化前的树脂微球直径与界面剪切强度呈线性关系,且平均强度较低。均质化后的树脂微球直径与界面剪切强度无相关性,平均强度比均质化前提高了39%,复合材料性能离散系数减小了50%以上,稳定性明显提升。

关键词: 环氧树脂, 固化剂, 均质化, 界面, 微球脱粘法

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

中图分类号:

TB332

李亚锋, 郭妙才, 洪旭辉. 固化剂体系均质化对EP/GF复合材料界面性能的影响[J]. 玻璃钢/复合材料, 2019, 0(10): 106-111.

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.

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