复配酰胺酸乳液改性玻璃纤维增强环氧树脂界面性能的研究

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (7): 57-63.

复配酰胺酸乳液改性玻璃纤维增强环氧树脂界面性能的研究

叶英¹, 刘媛², 李敏¹, 郭兵兵¹

1.华东理工大学化学工程联合国家重点实验室,上海 200237;
2.中国石化国际事业有限公司,北京 100728

收稿日期:2018-01-08 出版日期:2018-07-25 发布日期:2018-07-20
通讯作者: 周晓东(1969-),男,博士,教授,主要从事纤维增强树脂基复合材料的界面改性与设计、聚合物基复合材料的制备及成型技术、超分子组装及相关功能材料等方面的研究,xdzhou@ecust.edu.cn。
作者简介:叶英(1992-),女,硕士研究生,主要从事纤维增强树脂基复合材料界面方面的研究。

EXPERIMENTAL STUDY ON INTERFACIAL PROPERTIES OF GLASS FIBER REINFORCED EPOXY RESIN MODIFIED BY AMIDO ACID EMULSION

YE Ying¹, LIU Yuan², LI Min¹, GUO Bing-bing¹

1.State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
2.China Petrochemical International Company Limited, Beijing 100728, China

Received:2018-01-08 Online:2018-07-25 Published:2018-07-20

摘要/Abstract

摘要： 实验合成了酰胺酸乳液(SA-1),并添加聚乙烯吡咯烷酮进行复配(SA-2),通过纳米粒度分析仪、透射电子显微镜(TEM)和傅里叶红外光谱仪(FT-IR)测定乳液粒径及干燥成分的官能团结构。利用扫描电子显微镜(SEM)和原子力显微镜(AFM)研究处理前后玻璃纤维的表面形貌,并分别用单丝拉伸和微脱黏法测定单纤维的拉伸性能和复合材料的界面剪切性能(IFSS)。结果表明,SA-2乳液平均粒径为99 nm,分布范围为21 nm~220 nm,优于SA-1。SA-1乳液涂覆处理的膜层光滑,平均厚度为0.20 μm,而SA-2处理后,玻璃纤维的表面粗糙度增大,膜层厚度为0.12 μm。SA-1处理后玻璃纤维单丝拉伸性能从1.401 GPa降至1.369 GPa,GF/环氧树脂复合材料IFSS从20.06 MPa增至26.84 MPa;SA-2处理后单丝拉伸强度降至1.383 GPa,复合材料IFSS为32.70 MPa,提升了63.01%。

关键词: 玻璃纤维, 环氧树脂, 表面改性, 酰胺酸

Abstract: The interface between glass fiber and epoxy resin is the key to improve the properties of composites. In this experiment, the amic acid emulsion (SA-1) was synthesized, and the polyvinylpyrrolidone(PVP) was added to the emulsion to Compound SA-2. The surface of glass fiber was modified by the SA-1 and SA-2 amic acid emulsion in order to have a good interfacial adhesion with epoxy resin. The emulsion particle size were characterized by the Nano-particle size analyzer, transmission electron microscopy (TEM) and the sizing components of the functional group was tested by Fourier transform infrared spectroscopy (FT-IR). The effect of sizing treatment on the surface morphology of glass fiber was studied by scanning electron microscope (SEM) and atomic force microscope (AFM), and the tensile properties of single fibers and interface shear properties of composites (IFSS) were measured by monofilament stretch and micro-sticky method, respectively. The results showed that the average particle size of SA-2 emulsion was 99 nm and the distribution range was 21 nm~200 nm, which was better than the SA-1. The film layer of SA-1 emulsion sizing agent was smooth with an average thickness of 0.20 μm, and after the SA-2 sizing, the surface roughness of the glass fiber was increased and the thickness of the film layer was 0.12 μm. The tensile properties of the monofilament decreased from 1.401 GPa to 1.369 GPa, and the IFSS of the composite increased from 20.06 MPa to 26.84 MPa after SA-1 sizing. The IFSS of the composite after sizing treatment of SA-2 was 32.70 MPa, which was increased by 63.01%, while the tensile properties of the monofilament decreased to 1.383 GPa.

Key words: glass fiber, epoxy resin, surface modification, amic acid

中图分类号:

TB332

叶英, 刘媛, 李敏, 郭兵兵. 复配酰胺酸乳液改性玻璃纤维增强环氧树脂界面性能的研究[J]. 玻璃钢/复合材料, 2018, 0(7): 57-63.

YE Ying,LIU Yuan,LI Min,GUO Bing-bing. EXPERIMENTAL STUDY ON INTERFACIAL PROPERTIES OF GLASS FIBER REINFORCED EPOXY RESIN MODIFIED BY AMIDO ACID EMULSION[J]. Fiber Reinforced Plastics/Composites, 2018, 0(7): 57-63.

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