Supergiant Barocaloric Effects in Acetoxy Silicone Rubber over a Wide Temperature Range:Great Potential for Solid-state Cooling  

作　　者：William Imamura Erik Oda Usuda Lucas Soares Paixao Nicolau Molina Bom Angelo Marcio Gomes Alexandre Magnus Gomes Carvalho 

机构地区：[1]Faculdade de Engenharia Mec(a)nica,UNICAMP,CEP 13083-860,Campinas,SP,Brazil [2]Universidade Federal de Sāo Paulo,UNIFESP,CEP 09913-030,Diadema,SP,Brazil [3]Instituto de Física Gleb Wataghin,UNICAMP,CEP 13083-859,Campinas,SP,Brazil [4]Catalan Institute of Nanoscience and Nanotechnology,ICN2,08860 Belaterra,Barcelona,Spain [5]The Institute of Photonic Sciences,ICFO,08193 Castelldefels,Barcelona,Spain [6]Instituto de Física,UFRJ,CEP 21941-972,Rio de Janeiro,RJ,Brazil [7]Departamento de Engenharia Mec(a)nica,UEM,CEP 87020-900,Maringá,PR,Brazil

出　　处：《Chinese Journal of Polymer Science》2020年第9期999-1005,I0008,共8页高分子科学（英文版）

基　　金：FAPESP(No.2016/22934-3);CNPq;CAPES;CNPEM.

摘　　要：Solid-state cooling based on caloric effects is considered a viable alternative to replace the conventional vapor-compression refrigeration systems.Regarding barocaloric materials,recent results show that elastomers are promising candidates for cooling applications around room-temperature.In the present paper,we report supergiant barocaloric effects observed in acetoxy silicone rubber—a very popular,low-cost and environmentally friendly elastomer.Huge values of adiabatic temperature change and reversible isothermal entropy change were obtained upon moderate applied pressures and relatively low strains.These huge barocaloric changes are associated both to the polymer chain rearrangements induced by confined compression and to the first-order structural transition.The results are comparable to the best barocaloric materials reported so far,opening encouraging prospects for the application of elastomers in near future solid-state cooling devices.

关 键 词：Solid-state cooling Barocaloric effect ELASTOMER Silicone rubber Crystalline-amorphous transition 

分 类 号：TQ334[化学工程—橡胶工业] TB657[一般工业技术—制冷工程]