PP/rGO-PMMA/PP-g-MAH纳米复合材料的制备与性能研究  

Preparation and Properties of PP/rGO-PMMA/PP-g-MAH Nanocomposites

作　　者：翟文颖 刘喜军[1] 闫杰 韩贤新 Zhai Wenying;Liu Xijun;Yan Jie;Han Xianxin(College of Materials Science and Engineering,Qiqihar University,Heilongjiang Qiqihar 161006)

机构地区：[1]齐齐哈尔大学材料科学与工程学院,黑龙江齐齐哈尔161006

出　　处：《化工时刊》2023年第6期7-15,共9页Chemical Industry Times

摘　　要：作者以甲基丙烯酸二乙氨基乙酯(DEAM)为分散接枝助剂,通过悬浮聚合方法制备了聚甲基丙烯酸甲酯(PMMA)改性还原氧化石墨烯(rGO)纳米复合材料(rGO-PMMA),然后以聚丙烯接枝马来酸酐(PP-g-MAH)为界面相容剂,通过熔融共混方法制备了PP/rGO-PMMA/PP-g-MAH纳米复合材料。采用扫描电子显微镜、偏光显微镜、电子万能试验机、塑料材料动态性能试验机、差示扫描量热仪、热重分析仪、双电测四探针测试仪、动态流变仪等对PP/rGO-PMMA/PP-g-MAH纳米复合材料的结构与性能进行了分析测试。结果表明:当rGO-PMMA添加量为15 g时,PP/rGO-PMMA/PP-g-MAH纳米复合材料的拉伸强度达到22.88 MPa,相比于纯PP提高了19.29%;冲击强度达到11.1 kJ·m^(-2),相比于纯PP提高了72.09%;熔体黏度相比于纯PP提高了约800倍(剪切速率为0.01 rad·s^(-1))。当rGO-PMMA添加量为20 g时,复合材料的电导率达到1.2×10^(-1)S·cm^(-1),完全能够满足抗静电性能要求。In this paper,diethylaminoethyl methacrylate(DEAM)was used as dispersion grafting agent,and polymethyl methacrylate(PMMA)modified reduced graphene oxide(rGO)nanocomposites(rGO-PMMA)were prepared by suspension polymerization.Then polypropylene grafted maleic anhydride(PP-g-MAH)was used as interface compatibilizer.PP/rGO-PMMA/PP-g-MAH nanocomposites were prepared by melt blending method.The structure and properties of PP/rGO-PMMA/PP-g-MAH nanocomposites were analyzed and tested by scanning electron microscope,polarizing microscope,electronic universal testing machine,plastic material dynamic performance testing machine,differential scanning calorimeter,thermogravimetric analyzer,double electric four-probe tester and dynamic rheometer.The results showed that when added 15 g of rGO-PMMA,the tensile strength of PP/rGO-PMMA/PP-g-MAH nanocomposites reached 22.88 MPa,which increased by 19.29%compared with pure PP.The impact strength reached 11.1 kJ·m^(-2),which increased by 72.09%compared with pure PP.The melt viscosity was 800 times greater than pure PP when the shear rate was 0.01 rad·s^(-1).When the amount of rGO-PMMA was 20 g,the conductivity of the composite reached 1.2×10^(-1) S·cm^(-1),which could fully meet the requirements of antistatic performance.

关 键 词：聚丙烯 聚甲基丙烯酸甲酯 石墨烯 复合材料 性能 

分 类 号：TQ316[化学工程—高聚物工业]