KH-570/硬脂酸复合改性硅灰石及填充聚丙烯研究  

Study on KH-570/Stearic Acid Composite Modification Wollastonite and Filling Polypropylene

作　　者：冉霞 刘粲 何勤军 葛文 Ran Xia;Liu Can;He Qinjun;Ge Wen(Faculty of Materials Science and Chemistry,China University of Geosciences(Wuhan),Wuhan,Hubei 430074;Shanggao County Mengteying Mineral Fiber Co.,Ltd.,Yichun,Jiangxi 336400)

机构地区：[1]中国地质大学(武汉)材料与化学学院,湖北武汉430074 [2]上高县蒙特英矿纤有限公司,江西宜春336400

出　　处：《非金属矿》2021年第2期34-37,共4页Non-Metallic Mines

基　　金：新余市科技局项目(KH186460)。

摘　　要：采用硅烷偶联剂KH-570和硬脂酸复合改性剂对硅灰石进行改性处理,将改性后的硅灰石填充在聚丙烯中,研究硅灰石/聚丙烯复合材料的性能。通过对比硅灰石改性前后粉体吸油值及红外光谱分析,确定硅灰石改性的最佳条件:复合改性剂质量分数为2%,改性剂质量配比为1∶1,改性时间为1 h,改性温度为60℃,搅拌速度为300 r/min。改性硅灰石填充聚丙烯研究表明,当其填充量为硅灰石质量的45%时,复合材料的弯曲模量为1531.54 MPa,弯曲强度为30.42 MPa,拉伸强度无明显变化。The wollastonite was modified with silane KH-570 and stearic acid.The modified wollastonite was filled in polypropylene,and the properties of wollastonite/polypropylene composite were studied.By comparing and analyzing the oil absorption value of wollastonite powder before and after modification and infrared spectrum analysis,the optimum conditions of wollastonite modification were determined as follows:the dosage of composite modifier was 2%,the quality ratio of modifier was 1∶1,the modification time was 1 h,the modification temperature was 60℃,and the stirring speed was 300 r/min.The results showed that when the filling was 45%of the mass of wollastonite,the bending modulus and bending strength of the composite materials reached 1531.54 MPa and 30.42 MPa respectively,and the tensile strength did not change significantly.

关 键 词：硅灰石 吸油值 聚丙烯 填充 

分 类 号：TQ316.6[化学工程—高聚物工业]