磷酸表面改性Kevlar纤维及其复合材料性能的研究  

STUDY ON THE SURFACE MODIFICATION OF KEVLAR FIBER BY PHOSPHORIC ACID AND THE PROPERTIES OF ITS COMPOSITE

作　　者：刘俊宁 夏晓红[2] 

机构地区：[1]山东医学高等专科学校化学教研室,济南250002 [2]中国兵器工业集团第五三研究所,济南250031

出　　处：《工程塑料应用》2011年第9期30-33,共4页Engineering Plastics Application

基　　金：国家自然科学基金项目(50873073)

摘　　要：采用磷酸溶液对芳纶纤维(Kevlar)进行了表面改性,通过考察其表面化学结构、元素组成、表面形貌及表面粗糙度的变化研究了磷酸对Kevlar纤维表面改性的效果。结果发现,改性后的纤维表面引入了含氧基团,并产生了明显的刻蚀作用。利用溶液预浸渍工艺和高温模压成型技术制备了Kevlar增强双马来酰亚胺树脂(BMI)复合材料,通过研究其层间剪切强度和吸水率等性能,证实了Kevlar经磷酸表面改性后,其增强的复合材料的层间剪切强度更高、耐吸水性更好。Phosphorous acid solutions was used to modify the surface of Kevlar fiber. The changes in the chemical structure, element composition, surface morphology and surface roughness of the fiber surface were characterized to investigate the effects of surface modification of Kevlar fibers by phosphorous acid. Results showed that phosphorous acid could introduce oxygen-containing functional groups onto the surface of the fiber, and the surface of the fiber was etched obviously. Bismaleimide（BMI） composite reinforced by Kevlar fiber was prepared through solution impregnating process and high temperature molding technique. Through studying interlaminar shear strength（ILSS） and the water absorptivity, it was proved that when the surface of Kevlar fiber was modified by phosphorous acid, BMI/treated Kevlar fiber composite had higher ILSS and better water absorbing resistance.

关 键 词：磷酸溶液 芳纶纤维 双马来酰亚胺树脂 复合材料 

分 类 号：TQ326.5[化学工程—合成树脂塑料工业]