硬脂酸表面包覆对热塑性聚氨酯基体稀土防辐射材料性能的影响  

Effect of Surface Modification of SA on Mechanical Properties of Ln/TPU

作　　者：原小路[1,2] 胡水[1,2] 张法忠[1,2] 温世鹏[1,2] 刘力[1,2] 

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029 [2]北京化工大学碳及功能高分子材料教育部重点实验室,北京100029

出　　处：《塑料工业》2010年第6期52-55,共4页China Plastics Industry

基　　金：长江学者和创新团队发展计划资助基金(IRT0807);国家十一五支撑项目(2006BAE03B)

摘　　要：将硬脂酸(SA)溶于热乙醇溶液包覆于稀土盐(Ln)粉体表面,改性后的稀土盐粉体和热塑性聚氨酯(TPU)共混制得防辐射复合材料,研究了硬脂酸对稀土盐粉体的改性作用。采用红外光谱、接触角、扫描电镜测试表征了硬脂酸的改性效果,并且系统研究了不同硬脂酸表面改性用量下对高稀土粉体填充的热塑性聚氨酯材料力学性能的影响。最终结果表明,适量硬脂酸的包裹改性,提高了复合材料的力学强度。当硬脂酸的添加量为1.5g/(100gLn)时,复合材料的力学强度达到最优。The rare earth（Ln）was encapsulated by stearic acid（SA）,dispersed in hot alcohol solution,and blended with TPU and got the anti-radiation composite materials.The modification effect of SA on the Ln powder was investigated by FT-IR,SEM,and contact angle,meanwhile the different mass ratio of SA surface modifier on the mechanical property of the TPU filled by Ln powder was studied,which demonstrated that the proper SA coating and modification could improve the mechanical performance of TPU composite.When the ratio of SA was 1.5 g/（100g Ln）,the composite mechanical strength was optimum.

关 键 词：硬脂酸 稀土 热塑性聚氨酯 力学强度 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]