Fabrication and Characterization of PMMA/MWCNTs Composite Materials  

作　　者：SHANG Mengya MIAO Wei JIA Dongqing CHENG Wenxi ZHANG Xin WANG Qiang LIN Haowei LI Jinling 

机构地区：[1]School of Material Science&Engineering,Henan University of Technology,Zhengzhou 450001,China [2]Henan International Joint Laboratory of Nano-photoelectric Magnetic Materials,Henan University of Technology,Zhengzhou 450001,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2023年第5期1190-1197,共8页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Science and Technology Research Project of Henan Province(No.222102320419);Natural Scienceof Henan Province(No.232300420312);the Science Foundation of Henan University of Technology(No.2019BS010);the Innovative Funds Plan of Henan University of Technology(No.2020ZKCJ07)。

摘　　要：In order to improve the mechanical properties and thermal conductivity of polymethyl methacrylate(PMMA),multi-walled carbon nanotubes(MWCNTs)were used as reinforcement through in situ polymerization method to prepare PMMA/MWCNTs composites by changing the reaction time,polymerization temperature and the content of MWCNTs.The effects of different reaction conditions on the properties of the composites were studied.The results show that the mechanical properties,thermal/electrical conductivity and thermal stability of the composites are improved compared with the PMMA matrix.The tensile strength of the composites is increased by up to 24%.The bending strength of the composite material increases from20.41 to 68.04 MPa,and the maximum increase is 233%.Meanwhile,when the content of MWCNTs is 3 wt%,the thermal conductivity of the composite is 0.335 W/(m·K),which increases by138%,and the electrical conductivity is 3.94 S/m.The thermal stability of the composite has been significantly enhanced.The modified PMMA will be widely used in medicine,communications,electronics and other fields.

关 键 词：polymethyl methacrylate carbon nanotubes mechanical property thermal conductivity thermal stability 

分 类 号：TB3[一般工业技术—材料科学与工程]