可自愈、可再加工本征柔性固-固聚氨酯相变材料的制备及性能研究  

Intrinsic Flexible Polyurethane-based Solid-Solid Phase Change Materials with Self-healing and Recyclability

作　　者：王添锦 古丽巴尔情·达尼亚 周东晨 刘昶磊 张凯茜 白诗捷 周建鑫 张群 李昕[1] 赵毅 王锐[1] Tian-jin Wang;Gulibaerqing Daniya;Dong-chen Zhou;Chang-lei Liu;Kai-xi Zhang;Shi-jie Bai;Jian-xin Zhou;Qun Zhang;Xin Li;Yi Zhao;Rui Wang(Beijing Institute of Fashion Technology,Beijing 100029;Beijing Demeikechuang Technology Co.,Ltd.,Beijing 101111)

机构地区：[1]北京服装学院材料设计与工程学院,北京100029 [2]北京德美科创科技有限公司,北京101111

出　　处：《高分子学报》2025年第4期668-676,共9页Acta Polymerica Sinica

基　　金：北京市教委科技一般项目(项目号KM202010012006);北京市教委科技重点项目(项目号KZ201910012015);北京学者计划(项目号RCQJ20303);市属高校分类发展-北京服装学院“服装学”新兴交叉学科平台建设项目(项目号11000024T000003073871)资助.

摘　　要：以聚乙二醇(PEG)为软段,以异佛尔酮二异氰酸酯(IPDI)为硬段,以单宁酸(TA)为交联剂,制备了具有动态网络结构的本征柔性聚氨酯相变材料(TAPCMs).其中,PEG作为相变组分发挥可逆储/放热功能,氨基甲酸酯和单宁酸所带来的交联网络作为支撑材料赋予了TAPCMs稳定的固-固相变形态和优异的力学性能.单宁酸结构中的酚羟基还提供潜在动态共价键,使相变材料具有自修复性和可再加工功能.其相变焓最高可达84.70 J/g,拉伸强度可达22.73 MPa,断裂伸长率为137.86%,再加工后的样品拉伸强度仍能达到初始值的92%.这种多功能相变材料对设计环境友好且具备本征柔性热管理装备提供了思路.Solid-solid phase change materials(TAPCMs)with intrinsic flexibility and dynamic network structure were synthesized by using poly(ethylene glycol)(PEG)as soft segment,isophorone diisocyanate as hard segment and tannic acid as crosslinking agent.PEG played as a phase change component to reversibly storage and release heat.Carbamate and network structure offered by TA worked as supporting materials to endow TAPCMs stable solid-solid phase transformation and excellent mechanical properties.Besides,the phenolic hydroxyl groups in TA also provided a potential dynamic covalent bond,giving the function of self-healing and recyclability.TAPCMs possessed the highest latent heat of 84.70 J/g.The maximum tensile strength and elongation at break of TAPCM-4 were 22.73 MPa and 137.86%,respectively.After reprocessing,the mechanical properties can still reach 92%of the original one.This elaborate strategy is instructive for designing solid-solid phase change materials with intrinsic flexibility,self-healing,recyclability and environmentally friendly characteristics.

关 键 词：固-固相变材料 本征柔性 自修复 可再加工 

分 类 号：O631[理学—高分子化学] TB34[理学—化学]