(LLDPE/EVA)-g-AN体系的接枝动力学研究  

Study on Graft Kinetics of(LLDPE/EVA)-g-AN

作　　者：戴亚杰[1] 刘政坤 姜鹏[1] 张文龙[1,2] 李雪姣 DAI Yajie;LIU Zhengkun;JIANG Peng;ZHANG Wenlong;LI Xuejiao(School of Materials Science and Chemical Engineering,Harbin University of Science and Technology,Harbin 150040,China;Yangzhou Longda Electrical Materials Co.,Ltd.,Yangzhou 225222,China)

机构地区：[1]哈尔滨理工大学材料科学与化学工程学院,哈尔滨150040 [2]扬州龙达电工材料有限公司,江苏扬州225222

出　　处：《哈尔滨理工大学学报》2023年第3期113-118,共6页Journal of Harbin University of Science and Technology

基　　金：山东省自然科学基金联合基金(ZR2021LSW014)。

摘　　要：针对乙烯-醋酸乙烯共聚物(EVA)极性较弱需要接枝改性以及缺少相关理论研究的问题,采用熔融接枝法,以线性低密度聚乙烯(LLDPE)和EVA混合物作为基体,丙烯腈(AN)为接枝单体制备(LLDPE/EVA=60%/40%)-g-AN,研究该体系单体含量、引发剂含量和反应温度对于初始接枝速率的影响。结果表明:初始接枝反应速率与单体含量呈0.87次方关系,与引发剂含量呈0.36次方关系,与反应温度关系服从Arrhenius方程,该反应体系的接枝动力学的速率模型为R_(e)=Aexp(-2.86/T)[M]^(0.87)[I]^(0.36),接枝反应的活化能Ea=23.78 kJ/mol,为LLDPE/EVA熔融接枝AN的理论研究以及工艺优化提供依据。In view of the weak polarity of ethylene vinyl acetate copolymer(EVA)which need graft modification and the lack of relevant theoretical research,this article uses the melt grafting,using the linear lowdensity polyethylene(LLDPE)and EVA mixture as the matrix,acrylonitrile(AN)as the graft monomer to prepare(LLDPE/EVA)-g-AN.The effect of the monomer content,initiator content,experimental temperature and initial grafting rate has been discussed.The results show that the initial grafting reaction rate is 0.87 power with monomer content,0.36 power with initiator content,and the relationship with experimental temperature obeys Arrhenius equation.The model of grafting kinetics rate of the reaction system was obtained R_(e)=Aexp(-2.86/T)[M]^(0.87)[I]^(0.36),with the activation energy of the grafting reaction Ea=23.78 kJ/mol,providing a basis for the theoretical research and process optimization of LLDPE/EVA melt grafting AN.

关 键 词：熔融接枝 动力学模型 乙烯-醋酸乙烯共聚物 丙烯腈 

分 类 号：TQ316.65[化学工程—高聚物工业]