甲基丙烯酸锌增容补强的磁、热双响应形状记忆复合材料  

Magnetic and Thermal Dual Response Shape Memory Composite with Zinc Methacrylate Capacity Enhancement and Reinforcement

作　　者：李旭 陈嘉明 鞠长滨[3] 康海澜 方庆红 戴舒笑 李龙 Xu Li;Jiaming Chen;Changbin Ju;Hailan Kang;Qinghong Fang;Shuxiao Dai;Long Li(College of Materials Science and Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China;Key Laboratory for Rubber Elastomer of Liaoning,Shenyang 110142,China;Shenyang Aircraft Industry(Group)Limited Company,Shenyang 110850,China)

机构地区：[1]沈阳化工大学材料科学与工程学院,辽宁沈阳110142 [2]辽宁省橡胶弹性体重点实验室,辽宁沈阳110142 [3]沈阳飞机工业(集团)有限公司,辽宁沈阳110850

出　　处：《高分子材料科学与工程》2025年第2期116-125,共10页Polymer Materials Science & Engineering

基　　金：沈阳市自然科学基金专项(23-503-6-06);辽宁省教育厅基本科研项目(JYTMS20231498)。

摘　　要：四氧化三铁(Fe_(3)O_(4))纳米粒子分散到聚合物基体中制备形状记忆复合材料时,往往会受限于纳米粒子的团聚,造成力学性能下降和加热速率降低。文中设计利用甲基丙烯酸锌(ZDMA)改性杜仲胶(EUG)/Fe_(3)O_(4)复合材料,制得EUG/Fe_(3)O_(4)/ZDMA磁、热双响应形状记忆复合材料。探究了ZDMA含量对EUG/Fe_(3)O_(4)/ZDMA复合材料的力学性能、升温速率、磁响应形状回复率及Fe_(3)O_(4)纳米粒子分散状态的影响。结果表明,随着ZDMA含量的增加,Fe_(3)O_(4)纳米粒子的团聚现象得到了明显改善;ZDMA具有补强作用,EUG/Fe_(3)O_(4)/ZDMA复合材料的拉伸强度从16.7 MPa增加到23.5MPa,提高了40.7%;动态力学热分析表明,EUG/Fe_(3)O_(4)/ZDMA复合材料在3次循环下的形状固定率和形状回复率均在97%以上;随着ZDMA含量的增加,EUG/Fe_(3)O_(4)/ZDMA复合材料在交变磁场中升温速率提高,可实现快速非接触式加热,最短在27 s即可实现形状回复。In the preparation of shape memory composites,the dispersion of ferric oxide Fe_(3)O_(4)nanoparticles within the polymer matrix is crucial.However,the agglomeration of nanoparticles can often occur,leading to a decrease in mechanical properties and heating rate.This paper focused on modifying Eucommia ulmoides gum(EUG)/Fe_(3)O_(4)composites with zinc methacrylate(ZDMA)to create EUG/Fe_(3)O_(4)/ZDMA magnetic and thermal dual response shape memory composites.The effects of varying ZDMA content on the mechanical properties,heating rate,magnetic response shape recovery rate and dispersion state of Fe_(3)O_(4)nanoparticles of EUG/Fe_(3)O_(4)/ZDMA composites were investigated.The results indicate that the agglomeration of Fe_(3)O_(4)nanoparticles significantly improves with increasing ZDMA content.The tensile strength of the EUG/Fe_(3)O_(4)/ZDMA composite is increased from 16.7 MPa to 23.5 MPa,with a notable 40.7%increase observed in the EUG/Fe_(3)O_(4)/ZDMA composite.DMA testing demonstrates that the shape fixation rate and shape recovery rate of EUG/Fe_(3)O_(4)/ZDMA composites are above 97%over three cycles.As the increase of ZDMA content,the heating rate of EUG/Fe_(3)O_(4)/ZDMA composite material in the alternating magnetic field increases,allowing for fast non-contact heating,and achieving shape recovery in as little as 27 s.

关 键 词：甲基丙烯酸锌 磁响应生热 形状记忆 四氧化三铁 增容补强 

分 类 号：TB34[一般工业技术—材料科学与工程]