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    COMPOSITE TEMPERATURE INDICATION ARTICLE AND PREPARATION METHOD AND USE THEREOF
    1.
    发明公开
    COMPOSITE TEMPERATURE INDICATION ARTICLE AND PREPARATION METHOD AND USE THEREOF 审中-公开

    公开(公告)号：EP3708982A1

    公开(公告)日：2020-09-16

    申请号：EP17931611.2

    申请日：2017-11-07

    申请人： 3M Innovative Properties Company

    发明人： LI, Cheng ,  GONG, Guangming ,  SHI, Ying ,  JIN, Zhou ,  GUAN, Zheng

    IPC分类号： G01K11/06

    摘要： Disclosed is a temperature-indicating composite material product and a manufacturing method and application thereof, the temperature-indicating composite material product comprising: a porous film (1), opaque to at least a portion of visible light or opaque to at least a portion of visible light and at least a portion of ultraviolet light; and a colored composite material layer (2) located at the lower surface of the porous film (1), wherein the colored composite material layer (2) comprises a macro-molecular connecting material, a crystalline material and a colorant. Preferably, the macro-molecular connecting material is a crosslinked pressure-sensitive adhesive material, wherein the crystalline material and the colorant are dispersed in the macro-molecular connecting material, and the macro-molecular connecting material is an amorphous material or has a melting point higher than that of the crystalline material. When heated and melted, the crystalline material may migrate into the porous film (1) and fill pores therein, making the porous film (1) transparent to visible light.