钠基蒙脱土有机化改性及其在PA66中的应用  

Organic Modification of Sodium-Based Montmorillonite and Its Application in PA66

作　　者：胡瑾 陆新华 杨福兴 王军平 Hu Jin;Lu Xinhua;Yang Fuxing;Wang Junping(School of Chemistry and Material Engineering, Nanjing Polytechnic Institute, Nanjing,Jiangsu, 210048;School of Chemistry and Material Science, Nanjing Normal University, Nanjing, Jiangsu,210023;School of Environmental Engineering, Nanjing Polytechnic Institute, Nanjing, Jiangsu,210048)

机构地区：[1]南京科技职业学院化学与材料工程学院,江苏南京210048 [2]南京师范大学化学与材料科学学院,江苏南京210023 [3]南京科技职业学院环境工程学院,江苏南京210048

出　　处：《现代塑料加工应用》2021年第5期18-21,共4页Modern Plastics Processing and Applications

基　　金：国家自然科学基金项目(51674085);2019年江苏高校“青蓝工程”优秀青年骨干教师培养对象项目(苏教师函〔2018〕42号);江苏省高校自然科学基金项目(18KJD430005)。

摘　　要：采用聚乙二醇辛基苯基醚(OP-10)、十四烷基三甲基溴化铵(TTAB)对蒙脱土(MMT)进行改性,得到有机化改性蒙脱土(OMMT)。采用分散性试验、X射线衍射仪(XRD)测试等手段研究了MMT有机化改性效果,并将OMMT、玻璃纤维(GF)与尼龙66(PA66)经双螺杆熔融共混得到PA66/GF/OMMT复合材料,研究了复合材料的力学性能、阻燃性能和阻隔性能。结果表明:OMMT与无水乙醇、甲苯、苯的相容性得到了极大提高,TTAB能插入到MMT层间,使MMT层间距扩大至2.685 nm;OMMT的加入能提高PA66/GF/OMMT复合材料的力学性能、阻燃性能与阻隔性能,当PA66/OMMT/GF质量比为100∶19∶25时,复合材料的极限氧指数为28.4%,垂直燃烧测试达到V-0级,热变形温度达到226℃。Montmorillonite(MMT)was modified by polyethylene glycol octyl phenyl ether(OP-10)and tetradecyl trimethyl ammonium bromide(TTAB)to obtain organically modified montmorillonite(OMMT).The organic modification effect of MMT was studied by means of dispersivity experiment and X-ray diffraction(XRD)test.Nylon 66(PA66)/glass fiber(GF)/OMMT composites were prepared by melt blending in twin screw.The mechanical properties,flame retardancy and barrier properties of the composites were studied.The results show that the compatibility of OMMT with absolute ethanol,toluene and benzene has been greatly improved.TTAB can be inserted into MMT layers,and the interlayer spacing of MMT is extended to 2.685 nm.The addition of OMMT can improve the mechanical properties,flame retardancy and barrier properties of PA66/GF/OMMT composites.When the mass ratio of PA66/OMMT/GF is 100∶19∶25,the limited oxygen index of PA66/OMMT/GF composites is 28.4%,and vertical burning test reaches V-0 level,and the heat deformation temperature can reach 226℃.

关 键 词：蒙脱土 十四烷基三甲基溴化铵 尼龙66 熔融共混 阻燃性能 

分 类 号：TQ3[化学工程]