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Heat-accumulation temperature-regulation fiber and preparation method thereof

A technology of heat storage and temperature regulation and fiber, which is applied in fiber processing, conjugated synthetic polymer artificial filament, filament/thread forming, etc. Less problems, to achieve good heat storage and temperature adjustment performance, good electrical conductivity, low leakage effect

Inactive Publication Date: 2011-08-17
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the phase change properties of aliphatic polyether, aliphatic polyester and polyester ether originate from the melting and crystallization process of the polymer main chain, flow also occurs in the molten state, and polyether and aliphatic polyester and polyester The enthalpy of ether is small, the heat resistance stability is poor, and there are few types, so it is difficult to prepare heat storage and temperature regulating fibers with excellent performance
Currently known polymer phase change materials mainly contain two types: (1). One is a linear polymer, such as the aliphatic polyether, aliphatic polyester and polyester disclosed by the applicant's Chinese invention patent application CN1165877A Ether, etc.; (2). The other is a comb-shaped polymer, such as the poly(meth)acrylic acid alkyl ester and its copolymer disclosed by the applicant in the Chinese invention patent application CN101798364A, which have been found so far less phase change material

Method used

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  • Heat-accumulation temperature-regulation fiber and preparation method thereof
  • Heat-accumulation temperature-regulation fiber and preparation method thereof
  • Heat-accumulation temperature-regulation fiber and preparation method thereof

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preparation example Construction

[0024] The present invention also designs the preparation method of the fiber, the preparation method is suitable for the fiber described in the present invention, and adopts the fusion composite spinning method. Specifically, according to the composition and structural design of the fiber of the present invention, the following steps are mainly adopted:

[0025] (1) The homopolymer or copolymer of the comb-shaped polymer phase change material 3-alkylpyrrole, or the homopolymer blend with a mass ratio of 30 to 70:70 to 30, which is the comb-shaped polymer phase change material of the A component, is dried , remove the moisture in it, so that the moisture content reaches 50-150ppm;

[0026] (2) Transport the homopolymer, copolymer or homopolymer blend of the poly-3-alkylpyrrole to the A component metering pump of the fiber after melting by known technology, and control the mass fraction of the fiber A component to be 20 ~60%;

[0027] (3) Using known technology to dry the fib...

Embodiment 1

[0038] Poly 3-octadecylpyrrole with a degree of polymerization of 35 is used as the A component of the fiber, and poly 4-methylpentene-1 (number average molecular weight 280,000) is used as the B component of the fiber, and both components are dried to the moisture content When it is lower than 100ppm, the mass ratio of A and B is controlled to be 40:60, melted and composite spun at 250°C to make island-in-the-sea spun yarn, and then processed into stretch yarn after further drawing and twisting.

[0039] After inspection, the fineness of the finished fiber is 112dtex / 78f, the tensile breaking strength is 3.1cN / dtex, and the elongation at break is 30%. 23.1°C, heat release is 25J / g; 5% thermal weight loss temperature is 295°C; fiber surface specific resistance is 41Ω / cm; after using cyclohexane as solvent Soxhlet extractor, the mass loss rate of fiber is 3 %.

Embodiment 2

[0041] A random copolymer of 3-hexadecylpyrrole and 3-octadecylpyrrole (average degree of polymerization 85) with a molar ratio of 70:30 is used as the A component of the fiber, and polypropylene (melt index 35g / 10min) is The B component of the fiber, after both components are dried until the moisture content is lower than 100ppm, the mass ratio of A and B is controlled to be 40:60, melted and composite spun at 250°C to make concentric as-spun yarn, further drafted and twisted After processing into stretch yarn.

[0042] After inspection, the fineness of the finished fiber is 83dtex / 48f, the tensile breaking strength is 2.9cN / dtex, and the elongation at break is 23%. 19.1°C, the exothermic heat is 22J / g; 5% thermal weight loss temperature is 245°C; the surface specific resistance of the fiber is 151Ω / cm; after using cyclohexane as the solvent Soxhlet extractor, the mass loss rate of the fiber is 5 %.

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Abstract

The invention discloses a heat-accumulation temperature-regulation fiber and a preparation method thereof. In the fiber, a comb polymer phase-change material serves as an ingredient A, a fiber forming polymer serves as an ingredient B, wherein the ingredient A accounts for 20-60wt% of the fiber, and the ingredient B accounts for 80-40wt% of the fiber; and the fiber is prepared by a melting composite spinning method. The comb polymer phase-change material is poly3-pyrrolidyl or a copolymer of two poly3-pyrrolidyls at the molar ratio of (30:70)-(70:30) or a blend of two poly3-pyrrolidyls at the mixed mass ratio of (30:70)-(70:30); and the fiber forming polymer comprises at least one of copolyester, amide copolymer, polyethylene, polypropylene, poly4-methyl amylene-1, acrylonitrile-butene nitrile copolymer or polycaprolactam. The fiber is prepared by the melting composite spinning method.

Description

technical field [0001] The invention relates to functional fiber technology, in particular to a heat storage and temperature regulating fiber with the functions of electric conduction, 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 storage function obtained by implanting phase change material into the fiber or coating on the surface of the fiber. There are three main methods for implanting phase change materials in fibers: (1). After the phase change materials are prepared into microcapsules, they are added to the polymer solution and processed into fibers through conventional or unconventional processes. Most of the currently used phase change materials are low-molecular compounds, such as hydrated inorganic salts, normal alkanes (structural formula: n-C n h 2n+2 ), higher fatty alcohols, higher fatty acids or higher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/16D01F8/14D01F8/12D01F8/06D01F8/08D01D5/30
Inventor 张兴祥石海峰王学晨韩娜李丽娟
Owner TIANJIN POLYTECHNIC UNIV
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