doi:10.16597/j.cnki.issn.1002-154x.2023.06.002
PP / rGO－PMMA /PP－g－MAH 纳米复合材料的制备与性能研究
翟文颖 刘喜军* 闫杰 韩贤新
(齐齐哈尔大学 材料科学与工程学院，黑龙江 齐齐哈尔 161006)
Preparation and Properties of PP / rGO－PMMA /PP－g－MAH Nanocomposites
Zhai Wenying Liu Xijun* Yan Jie Han Xianxin
( College of Materials Science and Engineering，Qiqihar University，Heilongjiang Qiqihar 161006)
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 1.2×10-1S·cm-1，完全能够满足抗静电性能要求。
关键词：聚丙烯 聚甲基丙烯酸甲酯 石墨烯 复合材料 性能；
Abstract：
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．
Keywords：PP; PMMA; graphene; composite; properties;