Heat accumulating temperature regulating fiber and method for preparing same

A technology for heat storage, temperature regulation, and fiber, which is applied in fiber processing, spinning solution preparation, wet spinning, etc. It can solve the problems that it is difficult to meet the needs of different purposes, and there are few types of polymer phase change materials, and achieve various product forms. , wide application range, concentrated heat release effect

Active Publication Date: 2012-10-03
陕西析睿凯莱材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is applicable to fewer types of polymer phase change materials, and it is difficult to meet the needs of different applications.

Method used

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  • Heat accumulating temperature regulating fiber and method for preparing same

Examples

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preparation example Construction

[0019] The present invention also designs the preparation method of the fiber, the preparation method adopts the fiber composition of the present invention, and is suitable for melt composite spinning, solution composite spinning or solution electrostatic composite spinning. Specifically, according to the composition and structural design of the fibers of the present invention, one of the following processes is adopted:

[0020] (1) Melt composite spinning process:

[0021] ①Using the polymer phase change material of the A component-polyethylene glycol n-alkyl ether, drying, removing the moisture therein, so that the moisture content reaches 50~150ppm;

[0022] ②Using known technology to melt the polyethylene glycol n-alkyl ether, transport it to the metering pump of component A of the fiber, and control the mass fraction of component A of the fiber to be 20-60%;

[0023] ③ using known technology to dry the fiber-forming polymer of component B to remove moisture, so that the ...

Embodiment 1

[0046] The polyethylene glycol n-hexadecyl ether with m=2, n=16 is used as component A of the fiber, and the acrylonitrile-methyl acrylate (molar ratio is 85 / 15) copolymer (number-average molecular weight: 36,000) is used as the fiber component. Component B, after both components are dried until the moisture content is lower than 150ppm, the mass ratio of A and B is controlled to be 40:60, melted and composite spun at 210°C to make sea-island type spun yarn, and after further drawing, crimping and shaping, Cut into short fibers.

[0047] After inspection, the fineness of the finished fiber is 3.8dtex, the tensile breaking strength is 2.7cN / dtex, and the elongation at break is 31%. ℃, the heat release is 38J / g; the temperature of 5% thermal weight loss is 265℃.

Embodiment 2

[0049] The polyethylene glycol n-hexadecyl ether with m=20 and n=16 is used as the component A of the fiber, and the component B of the fiber is poly-4-methylpentene-1 (number average molecular weight: 210,000). After drying until the moisture content is lower than 150ppm, control the mass ratio of A and B to be 60:40, melt and compound spinning at 230°C to make concentric circular as-spun yarn, and then after further drawing, crimping and shaping, cut into short fibre.

[0050] After inspection, the fineness of the finished fiber is 5.1dtex, the tensile breaking strength is 2.2cN / dtex, and the elongation at break is 28%. It is 31.3°C, and the heat release is 55J / g; the temperature of 5% thermal weight loss is 215°C.

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Abstract

The invention discloses a heat accumulating temperature regulating fiber and a method for preparing the same. The fiber takes a polymer phase-change material as component A and a fiber-forming polymer as component B, wherein the mass fraction of the component A in the fiber counts 20-60%, while the mass fraction of the component B in the fiber counts 80-40%; the fiber is produced by using a method comprising the steps of melting composite spinning, solution composite spinning or electrostatic solution composite spinning; the fiber has a composite structure and the cross section of the fiber is shaped as an island or concentric circles, wherein the polymer phase-change material is polypropylene glycol-n-alkyl ether; the number m of glycol repetition units is 1-100; the number n of carbon atoms in alkyl is 11-30; and the heat absorption / dissipation temperature of the fiber is 11.9-53.8 DEG C, while the heat accumulation quantity is 18-55 J / g and 5% thermal gravimetric temperature is above 203 DEG C. The method for preparing the fiber employs the constitution and the structure of the heat accumulating temperature regulating fiber provided by the invention and prepares the fiber by using the method of the melting composite spinning, the solution composite spinning or the electrostatic solution composite spinning.

Description

technical field [0001] The invention relates to functional fiber technology, in particular to a heat storage and temperature regulating fiber with functions of heat energy absorption, storage and release and a preparation method thereof. Background technique [0002] Heat storage and temperature regulating fiber is a kind of fiber with heat energy absorption and release function obtained by implanting phase change material into the fiber or coating on the surface of the fiber. There are three main methods of implanting phase change materials in fibers: (1) After preparing phase change materials into phase change material microcapsules (a core-shell structure microsphere with a diameter of 1-1000 microns, the phase change material is the core) , added to the polymer solution or melt, and made into fibers by conventional or unconventional processes. For example, U.S. Patent No. 4,756,958 discloses a technology of mixing microcapsules of phase change materials in polymers to m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/16D01F8/14D01F8/12D01F8/06D01F8/08D01F8/10D01D5/08D01D5/06D01D5/00D01D5/30D01D5/34D01D1/02D01D1/04B29C48/05
CPCD01F8/16D01F8/08D01D5/08D01F8/10D01F8/14D01F8/12D01F8/06D01D5/003D01D5/06D01D5/34D01D5/36Y10T428/2929B29C48/05B29K2067/04B29L2031/731D10B2321/021D10B2321/041D10B2321/10D10B2331/02D10B2331/04
Inventor 张兴祥孟洁云唐孝芬石海峰
Owner 陕西析睿凯莱材料科技有限公司
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