摘要
玻璃纤维复合材料的界面性能是影响复合材料整体力学性能的关键因素。本文提出利用剥离试验表征玻璃纤维增强热塑性树脂复合材料界面粘结强度,并结合红外光谱、接触角、扫描电镜进行表征的方法。结果表明:实验室制备的玻璃片与玻璃纤维原丝浸润剂处理前后红外图谱对比发现,红外特征峰硅羟基峰位、定量分析结果基本一致;浸润剂处理前后的玻璃片接触角分别为41.01°、52.71°,表面疏水性明显增大,可以更好地被树脂浸润;剥离试验曲线与其他界面表征试验的脱粘趋势相似,亦符合剥离曲线的基本趋势,浸润剂处理前后玻璃片与聚乙烯树脂间的平均剥离力增大84.67%,浸润剂处理表面后,复合材料界面的粘结力明显增大。因此,将剥离试验用于探究玻璃纤维热塑性复合材料的界面粘结性能具有一定的可行性。
The interfacial properties of glass fiber composites are the key factors affecting the overall mechanical properties of composites. In this paper, the interfacial bonding strength of glass fiber reinforced thermoplastic resin composites was characterized by peeling test, and the surface characterization was carried out by infrared spectroscopy, contact angle and scanning electron microscopy. The results show that the infrared spectrum of the glass flakes prepared by the laboratory and the glass fiber precursor sizing agent before and after treatment showed that the peaks of the silicon characteristic peaks of the infrared characteristic peaks and the quantitative analysis results were basically the same. The contact angles of the front and back glass sheets are 41.01°and 52.71°, respectively. The surface hydrophobicity is obviously increased, which can be better infiltrated by the resin. The peeling test curve is similar to the debonding tendency of other interface characterization tests, and also conforms to the basic trend of the peeling curve. The average peeling force between the glass sheet and the polyethylene resin before and after the sizing treatment is increased by 84.67%. After the sizing treatment of the surface of the composite material, the adhesion of the interface is significantly increased. Therefore, it is feasible to use the peel test to characterize the interfacial adhesion properties of glass fiber thermoplastic composites.
作者
姜焕英
王大鹏
王志明
王庆昭
崔宝山
刘兴月
JIANG Huan-ying;WANG Da-peng;WANG Zhi-ming;WANG Qing-zhao(Shandong University of Science and Technology,School of Chemical and Environmental Engineering,Qingdao 266290,China;Shandong Fiberglass Group Co. ,Ltd. ,Linyi 276000,China)
出处
《玻璃钢／复合材料》
CAS
北大核心
2019年第5期77-82,共6页
Fiber Reinforced Plastics/Composites
