螺旋型尼龙6制冷纤维的制备及其扭转弹热效应  

Preparation of self-coiled Nylon 6 cooling fiber and its twist-based elastocaloric effect

作　　者：王润 滕昊霖 刘雍[1] WANG Run;TENG Hao-lin;LIU Yong(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387

出　　处：《天津工业大学学报》2022年第5期1-6,共6页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(52103146)。

摘　　要：针对传统气体压缩制冷效率低、污染环境及小型化设计等问题,基于纤维加捻制备螺旋型尼龙6制冷纤维,开发扭转弹热制冷技术。通过光学显微镜对其形貌和弹簧系数进行表征,并通过万用试验机、红外热成像仪测试其力学性能、绝热制冷温度变化以及循环稳定性。结果表明:螺旋形纤维的弹簧系数随着制备载荷的增加而增加;弹簧系数为1.0的螺旋型尼龙6制冷纤维,在快速释放60%应变过程中获得最大绝热制冷温度-1.77℃;2000次循环加载过程中,绝热温度变化依然稳定。Aiming at the problems of low efficiency,environmental pollution and miniaturization of traditional vapor-compression cooling technology,the self-coiled Nylon 6 cooling fiber was prepared based on fiber twisting to develop twist-based eslastocaloric cooling technology.The morphology and spring index of the self-coiled fiber were characterized by optical microscope.The mechanic properties,adiabatic cooling temperature changes and cyclic stability of the self-coiled fiber were measured by universal testing machine and infrared camera.The results showed that the spring index of the self-coiled fiber increased with the increase of preparation load.The maximum adiabatic cooling temperature of the self-coiled Nylon 6 fiber with the spring index of 1.0 was-1.77℃during the rapid release of 60%strain,and the changes of adiabatic temperature is still stable during 2000 cycles of loading.

关 键 词：尼龙6纤维 螺旋型纤维 扭转弹热效应 固态制冷 弹簧系数 绝热制冷温度 

分 类 号：TS151[轻工技术与工程—纺织材料与纺织品设计]