Heat storage fiber and preparation method thereof

Abstract

The invention relates to a thermal storage fiber. The thermal storage fiber is characterized in that thermal storage powder with the diameter being 0.1-1 micrometer are uniformly dispersed in a fiber prepared from copolymer powder formed by acrylonitrile and vinyl acetate, and the mass ratio of the thermal storage powder to the fiber is (0.5-2):(98-99.5). A preparation method for the thermal storage fiber comprises the following steps: producing copolymer powder, preparing a spinning solution, regulating temperature and pressure of the spinning solution, and filtering and spinning the spinning solution; in the spinning process, adding the thermal storage powder with the diameter being 0.1-1 micrometer into the spinning solution according to the mass ratio (0.5-2):(98-99.5) of the thermal storage powder and the fiber; intensively and uniformly mixing at 1400rpm through a dynamic mixer and then spinning and carrying out a coagulating bath, wherein the coagulating bath adopts a dimethyl acetamide aqueous solution, the concentration of the solution is 40-55 weight percent, and the temperature is 38-50 DEG C; carrying out double-diffusion forming, washing with water, drafting, oiling, drying and crimping, wherein the drafting times are 4-7 times; and shaping through 200-330KPa shaping pressure so as to finally obtain a finished thermal storage fiber product. The thermal storage fiber has the advantages of good performance, environmental protection and good thermal storage effect and is beneficial to health. The preparation method is simple and feasible, has high production efficiency, and is easily controlled.

Description

technical field [0001] The invention belongs to the technical field of textiles, in particular to a thermal storage fiber and a preparation method thereof. Background technique [0002] In recent years, the world's fiber consumption for fitness clothes, sportswear, casual clothes, etc. has increased dramatically year by year. Especially for winter sportswear, it is required to be comfortable and warm to wear, so there are many researches on moisture permeability and warmth retention The development of new fiber products, such as moisture-permeable and heat-retaining fibers and their products, is mainly produced through the following two methods: 1. Endowed by post-finishing methods, such as moisture-permeable coating or lamination on the base fabric and high-density The fabric is subjected to hydrophobic processing (such as coating or film coating) to make the fiber product have the function of moisture permeability and heat preservation; 2. By adding additives with heat sto...

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Problems solved by technology

[0002] In recent years, the world's fiber consumption for fitness clothes, sportswear, casual clothes, etc. has increased dramatically year by year. Especially for winter sportswear, it is required to be comfortable and warm to wear, so there are many researches on moisture permeability and warmth retention The development of new fiber products, such as moisture-permeable and heat-retaining fibers and their products, is mainly produced through the following two methods: 1. Endowed by post-finishing methods, such as moisture-permeable coating or lamination on the base fabric and high-density The fabric is subjected to hydrophobic processing (such as coating or film coating) to make the fiber product have the function of moisture permeability and heat preservation; 2. By adding additives with heat storage function during the fiber production process, such as zirconium carbide, ceramic micropowder, iron powder or ATO powder and other metals or metal oxides release heat through metal oxidation or absorb sunlight and human body heat, so that fibers and their products have moisture permeability and heat preservation functions, but the heat preservation effect is not ideal and the durability is poor.

[0003] The heat storage fiber additives that are common in the market now mainly include the following two types. One is composed of zirconium carbide and ceramics. However, due to the poor chemical stability of zirconium carbide, it will decompose in water and dissolve in acid, so the heat storage effect of the fiber cannot last; The other uses ATO powder or GTO (modified ATO powder) as an additive, but due to the large amount of addition (about 11% on the fiber), the index in the fiber material drops significantly, and because the powder If the content is high, the powder is easy to fall off, and the heat storage effect of the fiber cannot last long. Long-term exposure of the human body to such metal oxides will also affect health.

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