碳纤维表面处理对C/PLA复合材料界面粘结强度的影响(Ⅱ)  

Effect of Fiber Surface Treatment on Interfacial Bonding Strength of C/PLA Composites(Ⅱ)

作　　者：万怡灶[1] 王玉林[1] 周福刚[1] 赵强[1] 齐锦刚[1] 王勤 

机构地区：[1]天津大学材料科学与工程学院,天津300072 [2]山东省医疗器械研究所,济南250013

出　　处：《材料工程》2000年第7期17-19,23,共4页Journal of Materials Engineering

基　　金：天津市自然科学基金资助!(99360221)

摘　　要：对硝酸表面处理前后碳纤维增强聚乳酸 ( C/ PL A)复合材料的界面状态进行了研究。重点研究了碳纤维的硝酸表面处理对 C/ PL A复合材料界面粘结强度的影响以及粘结机理。研究表明 ,硝酸表面处理可使复合材料的界面粘结强度大幅度增加 ,复合材料的冲击强度、弯曲强度、弯曲模量和剪切强度亦有不同程度的提高。 XPS研究发现 ,碳纤维与 PL A基体间有化学反应发生。界面化学反应程度的增加是复合材料界面粘结强度提高的主要原因 ;此外 。Interfacial conditions of carbon fiberreinforced polylactide (C/PLA) composites were investigated The emphasis was focused on the influence of fiber surface treatment with nitric acid on interfacial bonding strength of the C/PLA composites and the adhesion mechanism The results showed that the interfacial bonding strength increased greatly, while the impact strength, flexural strength and modulus, and shear strength increased slightly after fiber surface treatment XPS analyses demonstrated that a chemical reaction occurred at fiberPLA interfaces The increase in interfacial bonding strength was attributed to the increase in the level of chemical reaction at fiberPLA interfaces and fiber surface roughness, but the former is dominant

关 键 词：碳纤维 聚乳酸 复合材料 表面处理 界面粘结强度 

分 类 号：TB332[一般工业技术—材料科学与工程]