Controllable large-scale processing of temperature regulating sheath-core fibers with high-enthalpy for thermal management  

作　　者：Ziye Chen Zexu Hu Shining Chen Senlong Yu Liping Zhu Hengxue Xiang Meifang Zhu 

机构地区：[1]Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai,201620,China [2]College of Mechanical and Engineering,Donghua University,Shanghai,201620,China

出　　处：《Nano Materials Science》2024年第3期337-344,共8页纳米材料科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (52073047);the Science and Technology Commission of Shanghai Municipality (20JC1414900);the Program of Shanghai Technology Research Leader (20XD1433700);the INTERNATIONAL COOPERATION Fund of the Science and Technology Commission of Shanghai Municipality (20520740800)。

摘　　要：Temperature regulating fibers(TRF_(s)) with high enthalpy and high form stability are the key factors for thermal management. However, the enthalpies of most TRFsare not high, and the preparation methods are still at the laboratory scale. It remains a great challenge to use industrial spinning equipment to achieve continuous processing of TRF_(s) with excellent thermal and mechanical properties. Here, polyamide 6(PA6) based TRF_(s) with a sheath-core structure were prepared by bicomponent melt-spinning. The sheath-core TRF(TRF_(sc)) are composed of PA6 as sheath and functional PA6 as core, which are filled with the shape stable phase change materials(ssPCM),dendritic silica@polyethylene glycol(SiO_(2)@PEG). With the aid of the sheath structure, the filling content of SiO_(2)@PEG can reach 30 %, so that the enthalpy of the TRF_(s) can be as high as 21.3 J/g. The ultra-high enthalpy guarantees the temperature regulation ability during the alternating process of cooling and heating. In hot environment, the temperature regulation time is 6.59 min, and the temperature difference is 12.93℃. In addition, the mechanical strength of the prepared TRF_(sc) reaches 2.26 cN/dtex, which can fully meet its application in the field of thermal management textiles and devices to manage the temperature regulation of the human body or precision equipment, etc.

关 键 词：Thermal management Hybrid fibers Polyamides Bicomponent melt spinning Temperature regulating fibers 

分 类 号：TQ340.64[化学工程—化纤工业]