Phase change microspheres, intelligent temperature-adapting fiber and preparation methods thereof

Abstract

The invention discloses phase change microspheres, intelligent temperature-adapting fiber and preparation methods thereof. Firstly, graphene far-infrared microspheres adopting mesoporous structures are prepared, then a phase change material is melted and fully the phase change material is infiltrated into cavities of the graphene microspheres to obtain the phase change microspheres adopting core-shell structures. The excess phase change material on the surfaces of the phase change microspheres is removed through pressure filtration, and after cooling, melt blending and spinning are performed on the phase change microspheres and spun-grade polymer chips to obtain composite fiber with an intelligent temperature-adjusting function. Through use of the graphene hollow spheres for wrapping the phase change material, leakage of the phase change material during using is greatly reduced, so that the service life can be significantly prolonged; high heat conductivity of graphene can effectivelypromote heat exchange between the environment and fabric and between the fabric and the surface of a human body, so that the heat response speed of heat storage fabric can be increased; the graphene and nanometer far-infrared powder have a high-efficiency far-infrared radiation function, so that the temperature of the body surface can be increased, and blood circulation is promoted.

Description

technical field [0001] The invention belongs to the field of fibers, and in particular relates to a phase-change microsphere, an intelligent temperature-regulating fiber and a preparation method thereof. Background technique [0002] Phase change materials are a class of materials that have the potential to absorb or release a large amount of heat during the phase change process. During the phase change, although the temperature remains unchanged, it is accompanied by a large amount of heat release or absorption. Phase-change temperature-regulating fiber is a kind of fiber with heat storage and temperature-regulating function prepared by doping phase-change temperature-regulating materials into fibers. Phase-change temperature-regulating fibers can use the phase-change materials in them when the temperature of the external environment changes. During the phase transition process, heat exchange is performed with the external environment to realize the function of fiber temper...

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Problems solved by technology

However, these two methods have great defects. The former only improves the overall thermal conductivity of the material, but the phase change performance has not been improved. The latter uses modified graphene and graphene oxide to coat the phase. Not only is it difficult to ensure the effective coating of phase change materials, but also it is impossible to improve the overall thermal conductivity of the material

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