聚丙烯/膨润土纳米复合材料制备及其力学性能

Preparation of Polypropylene/Bentonite Nanocomposites and Its Mechanical Property

用溴化十六烷基吡啶与Na基膨润土制备出有机膨润土（OMMT）。经热失重分析、红外光谱及X-射线衍射（XRD）测试表明：溴化十六烷基吡啶已进入膨润土层间；采用南京杰恩特SHJ-20型同向双螺杆挤出机，将聚丙烯（PP）与有机膨润土熔融复合，制得了分散效果良好的纳米复合材料，经塑料注射成型机压片制样，测试复合材料的力学性能。结果显示：添加有机膨润土的质量分数为3％～5％时，复合材料的拉伸强度提高了5％；缺口冲击强度提高40％。

Organobentonite was prepared with CPB and Na-bentonite,results of XRD,FT-IR and TGA indicated the CPB was intercalated into the layers of bentonite. Polyproplene and organobentonite were melted and composited using a SHJ-20 twin-screw extruder and a well dispersed nanocomposite was obtained,then it was pressed into a film by a plastic compression molding machine,its mechanical property was tested. Results showed that when the contents of organobentonite was up to 3 % - 5 % ,the tensile strength enhanced 5 % ;The gap shock strength enhanced 40 %.