【作者】 胡晓兰； 林众； 梁国正；

【Author】 HU Xiao-lan; LIN Zhong; LIANG Guo-zheng Department of Material Science and Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; Department of Applied Chemistry, Northwestern Polytechnical University, Xi’an 710072,China)

【机构】 厦门大学化学化工学院材料科学与工程系； 西北工业大学应用化学系；

【摘要】 应用硅烷、钛酸酯等偶联剂对钛酸钾晶须进行表面处理,考察了钛酸钾晶须／双马来酰亚胺树脂复合材料的性能,研究表明,钛酸钾晶须经硅烷偶联剂处理后,对材料性能的提高具有很好的作用。复合材料的弯曲强度在晶须含量为5％时达到最大值,之后随晶须含量的增大稍有下降;材料的弯曲模量随晶须添加重的增加逐渐增大;材料的冲击强度随晶须含量的增大提高较少;晶须的加入使材料的耐热性得到有效提高;体系中加入钛酸钾晶须可以使材料的耐磨性能得到改善,同时也使材料抵抗塑性变形和裂纹引发及扩展的能力得到明显提高。SEM研究表明,硅烷偶联剂处理的晶须与树脂基体具有更好的界面粘接;双马来酰亚胺树脂基体的磨损机理主要以疲劳磨损为主, 伴随一定的粘着磨损,添加晶须后材料的磨损机理主要是较轻微的疲劳磨损和磨粒磨损。更多还原

【Abstract】 Properties of potassium titanate whiskers modified BMI resin were investigated. Surface treatment of whiskers by several coupling agents such as silane and titanate were used to improve the interface properties between whisker and resin. The results show that silane coupling agent has better surface treatment effect than titanate coupling agent and untreated whiskers. The flexural strength and the flexural modulus of the composites increase obviously by adding 5% whiskers. While the impact strength of the composite increases slightly. The heat distortion temperature of the composites increases with increasing of the whisker content. The wear resistance can be increased by adding potassium titanate whiskers. And the capability standing against plastic distortion and crack expending improve obviously. SEM shows that silane coupling agent make the composite has better interface property. The wear of BMI resin is characteristic of fatigue and adhesion under 25kg friction load. While the wear of the composite containing 8% whiskers is dominated by soft fatigue.更多还原