介电弹性体材料的新理解及其在全柔性人工心脏的应用

作     者：武文杰 张双琨 吴战鹏 秦司晨 李凡珠 宋天夫 曹霞 王中林 张立群 Wenjie Wu;Shuangkun Zhang;Zhanpeng Wu;Sichen Qin;Fanzhu Li;Tianfu Song;Xia Cao;Zhong Lin Wang;Liqun Zhang

作者机构：Center of Advanced Elastomer MaterialsState Key Laboratory of Organic-Inorganic CompositesBeijing University of Chemical TechnologyBeijing 100029China Engineering Research Center of Ministry of Education on Energy and Resource Saved ElastomersBeijing University of Chemical TechnologyBeijing 100029China Beijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijing 100029China Beijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 100140China Research Center for Bioengineering and Sensing TechnologyBeijing Key Laboratory for Bioengineering and Sensing TechnologySchool of Chemistry and Biological Engineeringand Beijing Municipal Key Laboratory of New Energy Materials and TechnologiesUniversity of Science and Technology BeijingBeijing 100083China Key Laboratory of Carbon Fiber and Functional PolymersBeijing University of Chemical Technology(Ministry of Education)Beijing 100029China School of Materials Science and EngineeringGeorgia Institute of TechnologyAtlantaGA 30332-0245USA State Key Laboratory of Alternate Electric Power System with Renewable Energy SourcesNorth China Electric Power UniversityBeijing 102206China 

基　　金：supported by the Basic Science Center Program of the National Natural Science Foundation of China (51988102) the National Key Research and Development Program of China (2017YFB0306903) the Major Program of National Natural Science Foundation of China (51790501) the Innovative Research Groups (51221002 and 51521062) the National Natural Science Foundation of China (52003024) 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2021年第66卷第10期

页      码：981-990,M0003页

摘      要：介电弹性体材料是指在电场下可以发生形变的弹性体材料,通常认为,介电弹性体在电场下的电致形变是由麦克斯韦应力挤压造成的,是力引发的应变.然而按照这一理论,不同介电弹性材料的理论形变和实际形变差别很大,毫无相关性.本文提出了一个用于解释其电致形变的新模型.该模型认为介电弹性体的电致形变是电场直接引发的:首先高分子链上的偶极在电场下被取向,而后拖拽高分子主链运动,造成构像的变化,最终产生电致形变.依据这一模型,可以很好地解释以往理论无法解释的问题.而后基于这一模型,设计合成了一种聚膦腈介电弹性体材料.该材料在不做预拉伸的情况下,可以达到80%的电致形变,具有目前最好的综合性能.最后基于该聚膦腈材料,设计制备了一种新型的全柔性人工心脏模型,其具有和人体心脏完全相同的工作特性,有望用于制备全柔性人工心脏.

主 题 词：聚膦腈 介电弹性体 弹性体材料 高分子链 人体心脏 人工心脏 全柔性 设计合成 

学科分类：08[工学] 080501[080501] 0805[工学-能源动力学] 080502[080502] 

核心收录：

D　O　I：10.1016/j.scib.2020.12.033

馆 藏 号：203102954...