乙酸酐改性对芳纶/环氧复合材料的影响  

Effect of acetic anhydride modification on interface of aramid fiber / epoxy composites

作　　者：季家友[1] 夏宁[2] 苏奇[3] 祝云[1] 沈凡[1] 徐慢[1] 

机构地区：[1]武汉工程大学材料科学与工程学院,湖北武汉430074 [2]武汉轻工大学食品科学与工程学院,湖北武汉430023 [3]四川东材科技集团股份有限公司,四川绵阳621000

出　　处：《武汉工程大学学报》2014年第7期39-42,共4页Journal of Wuhan Institute of Technology

基　　金：国家自然科学基金青年基金项目(213005105);湖北省自然科学基金面上项目(2013CFB319);武汉市科技攻关计划(2013010501010138);湖北省科技厅省级科技项目(2013HB12);武汉工程大学青年科学基金(Q201301)

摘　　要：为提高芳纶Ⅲ/环氧复合材料界面粘结强度,用乙酸酐分别在常温、50℃、75℃、100℃条件下对芳纶Ⅲ改性处理,分别用傅里叶变换红外光谱仪、扫描电子显微镜、X射线光电子能谱仪对改性前后芳纶Ⅲ纤维表面性质及性能进行表征.用处理前后的纤维与24A聚胺酯树脂按质量比为树脂∶纤维=1∶1.5的比例分别称取,将二甲苯溶解后的树脂溶液均匀地涂覆于处理过的纤维表面制成预浸料,然后用层压法将其制成复合材料.按照GB/T 1449-2005标准,分别测试其弯曲强度.结果表明:经改性处理过的纤维表面较未处理时含氧基团增加、表面变粗糙,制备的复合材料的弯曲强度较未处理时提高了35.8%.乙酸酐对芳纶Ⅲ改性处理的方法操作简便、效果显著,是一种非常有效的化学改性方法.To improve the interface adhesion of hydride was used to modify aramid fiber Ⅲ at r the aramid fiber Ⅲ/epoxy re oomtemperature,50 ℃,75 ℃, erties of untreated and treated aramid fiber Ⅲ were characterized by scanning rier transform-inf ber and 24A poly polyurethane resi rared spectroscopy and X-ray photoelect uretharie resin with the ratio of 1 ： 1.5 ron spectroscope. Th sin composites, acetic an 100 ℃. The surface prop electron microscope, fou e untreated and treated fi were separately weighed. The solution of n in dimethyholuene was casted uniformly onto the surface of the modified fibers, 24A then the composites were prepared by laminating. According to the GB/T 1449-2005,the bending strength of all composites was tested. The results show that oxygen-containing groups on the modified fiber surface increase and the surface is rougher; furthermore, the bending strength of the composite with treated fiber and resin is increased by 35.8 %. Acetic anhydride treatment is an effective method for the modifying aramid fiber Ⅲ.

关 键 词：芳纶 复合材料 表面改性 界面粘结 

分 类 号：TB332[一般工业技术—材料科学与工程]