Heat storing material, composition thereof and their use

Abstract

A heat-accumulative material composed of a polymer or oligomer having a melting point of -10 to 100 DEG C and latent heat of 30 J / g or more for use around a body, and heat-accumulative composition comprising the same heat-accumulative material. The heat-accumulative material tends to be kept at a constant temperature more effectively by absorbing heat as ambient temperature increases to melt, and releasing heat as ambient temperature decreases to solidify, to moderate the effect of changed ambient temperature, and thereby to exhibit the function as a heat-accumulative material. They have a sufficiently high viscosity, preventing the heat-accumulative material from flowing out even when it is molten. Each of the heat-accumulative material and composition can be made into a heat-accumulative film or sheet, laminate, molded article, composite fiber and cloth which can be suitably used around a body.

Description

technical field [0001] The present invention relates to a heat storage material, a composition thereof, and a heat storage film or sheet, a laminate, a heat storage composite fiber, a heat storage cloth member, and a molded product using these materials. Background technique [0002] In the past, various materials have been used to improve heat retention in clothing for use in environments with significant temperature changes, such as clothing made of cold-proof clothing or sports clothing. [0003] Specifically, for example, various cotton materials, feathers, and lightweight materials are used as clothing for heat insulation, clothing with a radiant heat reflection film such as aluminum added inside the clothing, clothing that absorbs water and generates heat, and the like. [0004] In addition, there is a method of using a heat storage material as a method of imparting a temperature adjustment function against changes in external temperature. [0005] Such a thermal stor...

AI Technical Summary

Problems solved by technology

[0009] ①It is difficult to evenly stick the microcapsules on the substrate, and cannot fully function

[0010] ② When the adhesive is applied and adhered, although the heat retention is improved, the heat retention may be reduced due to the influence of the adhesive, and the comfort of the finished clothes may be impaired

[0011] ③Because the microcapsule structure has a certain size, it is difficult to make a thin film or a sheet when it is made into a thin film

[0014] ⑥When forming a film or sheet, the microcapsules are broken by pressure, etc., so the formability is poor, and the molten liquid inside leaks out due to the breakage of the microcapsules

[0015] ⑦Adhesives used for adhesion make the fabric hard and impair the handle, and because the applied adhesive reduces the moisture permeability required for the fabric, it reduces the function as clothes

[0016] ⑧ Due to the large particle size of microcapsules, there may be broken filaments in the spinning process and weaving process

[0029] ①When performing ordinary plastic molding, such as injection molding, hollow molding, and compression molding, the capsule will be destroyed by applying pressure, so effective molding cannot be performed

[0030] ②In the case of paraffin-based materials, since the heat storage components volatilize during molding, it is difficult to show the heat storage effect

[0031] ③ The phase transition temperature of heat storage materials is high, which is not suitable for practical use

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