Page 58 - 《精细化工》2022年第12期
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第 39 卷第 12 期                            精   细   化   工                                 Vol.39, No.12
             2 022 年 12 月                            FINE CHEMICALS                                 Nov.  2022

              功能材料

                         磁、热双重响应的 Fe O /EUG 形状记忆
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                                        复合材料的制备及性能



                   韩雨霏      1,2 ,李   旭    1,2 ,康海澜      1,2 ,王   娜     1,2 ,方庆红      1,2 ,李   龙    1,2*

                 (1.  沈阳化工大学  材料科学与工程学院,辽宁  沈阳  110142;2.  沈阳化工大学  辽宁省橡胶弹性体重点
                 实验室,辽宁  沈阳  110142)

                 摘要:通过机械加工使 Fe 3 O 4 纳米粒子分散在杜仲橡胶(EUG)基体中,制得磁、热双响应形状记忆 Fe 3 O 4 /EUG
                 复合材料。采用 SEM、万能试验机、DSC、动态热机械分析(DMA)仪、感应加热设备和红外热成像仪对 Fe 3 O 4 /EUG
                 复合材料进行了表征。探究了 Fe 3 O 4 纳米粒子含量对 Fe 3 O 4 /EUG 复合材料的升温速率、磁响应形状回复率、Fe 3 O 4
                 纳米粒子的分散状态及力学性能的影响。结果表明,Fe 3 O 4 纳米粒子含量≥30%(以 EUG 的质量为基准,下同)
                 时,Fe 3 O 4 在硫化 EUG 基体中有轻微团聚现象。Fe 3 O 4 具有补强作用,Fe 3 O 4 /EUG 复合材料在高温(60  ℃)下
                 力学性能均有提高,Fe 3 O 4 /EUG-50(Fe 3 O 4 纳米粒子含量为 50%)比 EUG 的 800%定伸应力提升了 47%。DMA
                 测试表明,Fe 3 O 4 /EUG 复合材料在 3 次循环下的形状固定率和形状回复率均>98%。随着 Fe 3 O 4 含量的增加,
                 Fe 3 O 4 /EUG 复合材料在感应磁场中温升速度提高,可实现快速无接触式加热,最短在 12 s 即可实现形状回复。
                 关键词:杜仲胶;Fe 3 O 4 纳米粒子;磁响应生热;形状记忆;功能材料
                 中图分类号:TQ332.2      文献标识码:A      文章编号:1003-5214 (2022) 12-2424-07



                          Preparation and properties of shape memory Fe 3O 4/EUG
                            composites with magnetic and thermal dual response


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                                        1,2
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                      HAN Yufei , LI Xu , KANG Hailan , WANG Na , FANG Qinghong , LI Long        1,2*
                 (1. College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142,
                 Liaoning, China; 2. Liaoning Provincial Key Laboratory of Rubber & Elastomer, Shenyang 110142, Liaoning, China)
                 Abstract:  Shape memory Fe 3O 4/EUG composites exhibiting magnetic and thermal dual response were
                 prepared from mechanical dispersion of Fe 3O 4 nanoparticles in Eucommia ulmoides gum (EUG) matrix, and
                 characterized by  SEM, universal  testing machine, DSC,  dynamic  thermomechanical analyzer, induction
                 heating equipment and infrared thermal imager. The effects of Fe 3O 4 nanoparticle content on heating rate,
                 magnetic response shape recovery, Fe 3O 4 nanoparticles dispersion state and mechanical properties of Fe 3O 4/
                 EUG composites were then explored. The results demonstrated that Fe 3O 4 showed slight agglomeration in
                 the  vulcanized EUG matrix when its content≥30%  (based  on the mass of  EUG, the  same below).  The
                 mechanical properties of Fe 3O 4/EUG-50 composites were improved at high temperature (60  ℃), and the
                 tensile strength was 47% higher compared with that of EUG, indicating the reinforcing effect of Fe 3O 4.
                 DMA test showed that both the fixation and recovery rate of Fe 3O 4/EUG composites remained above 98%
                 after recycled three times. Moreover, the temperature rise rate of Fe 3O 4/EUG composites increased along
                 the Fe 3O 4 content increase in the induction magnetic field, leading to rapid non-contact heating and rapid
                 shape recovery, which could be realized in as short as 12 s.
                 Key words:  Eucommia ulmoides gum;  Fe 3O 4  nanoparticles;  magnetic response  heat generation; shape
                 memory; functional materials

                 收稿日期:2022-03-21;  定用日期:2022-06-07; DOI: 10.13550/j.jxhg.20220249
                 基金项目:国家重点研发计划“科技冬奥”专项(2019YFF0302004);辽宁省教育厅青年项目(LQ2020006);辽宁省重点研发计划
                 项目
                 作者简介:韩雨霏(1997—),女,硕士生。联系人:李   龙(1984—),男,讲师,E-mail:lilong@syuct.edu.cn。
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