• Journal of Inorganic Materials
  • Vol. 37, Issue 9, 954 (2022)
Saisai CHEN, Yali PANG, Jiaona WANG, Yan GONG, Rui WANG, Xiaowan LUAN, and Xin LI*
Author Affiliations
  • Beijing Key Laboratory of Clothing Materials R&D and Assessment, Smart Wearable and Special Functional Textile Research Institute, School of Materials Design & Engineering, Beijing Institute of Fashion Technology, Beijing 100029, China
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    DOI: 10.15541/jim20210726 Cite this Article
    Saisai CHEN, Yali PANG, Jiaona WANG, Yan GONG, Rui WANG, Xiaowan LUAN, Xin LI. Preparation and Properties of Green-yellow Reversible Electro-thermochromic Fabric[J]. Journal of Inorganic Materials, 2022, 37(9): 954 Copy Citation Text show less

    Abstract

    Graphene has played a major role in wearable electronic textiles due to its excellent electrical conductivity, superior flexibility and environmental stability. In this work, a green-yellow reversible electrothermochromic fabric was constructed via a facial double side coating. The self-made graphene paste is coated on the surface of polyester fabric by screen printing technology. The hybrid thermochromic ink with reversible color-changing property is coated on the opposite side of the graphene layer by screen printing technology. Structural properties and discoloration principle of the fabric were analyzed. Their thermal and color-changing properties were studied by using infrared thermal imaging and colorimeter. The results show that the graphene forms a conductive layer with a thickness of 250 μm that allows Joule heating to supply the thermal resource for the electrothermochromic behavior. This fabric changes from green to yellow with a gradual heating that exceeded 45 ℃ at 12 V due to the ring closure and opening of crystal violet lactone. Its color change response time is about 15 s, while fading response time is about 27 s. The electro-thermochromic fabric is not disturbed once undergoing a bending angle range from 30° to 180° and the voltage-current curve remains stable. Performance of the fabric does not significantly degrade after 200 heating/cooling continuous cycles. In conclusion, a sensitive electro-thermochromic fabric with good cycle performance from green to yellow with the structure of graphene film‖polyester fabric‖thermochromic film is successfully prepared, which has a high application potential in the fields of military camouflage and wearable display.
    Saisai CHEN, Yali PANG, Jiaona WANG, Yan GONG, Rui WANG, Xiaowan LUAN, Xin LI. Preparation and Properties of Green-yellow Reversible Electro-thermochromic Fabric[J]. Journal of Inorganic Materials, 2022, 37(9): 954
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