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Heat-storage and thermo-regulated fiber

A technology of heat storage and temperature adjustment, fiber, applied in the direction of fiber chemical characteristics, conjugated artificial filament, conjugated synthetic polymer artificial filament, etc., can solve the problem of fiber use effect and range limitation, poor heat resistance stability, heat enthalpy Small and other problems, to achieve good heat storage and temperature adjustment performance, good electrical conductivity, and good thermal stability

Inactive Publication Date: 2011-01-19
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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
Among the known disclosed technologies within the scope of the applicant's search, heat storage and temperature regulating fibers only have the function of temperature regulation, and because of the use of low-molecular organic phase change materials, the hydrophobicity is very strong, resulting in high static electricity in the fibers, and they do not have antistatic properties. The effect and range of fiber use are limited

Method used

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preparation example Construction

[0022] The preparation method of the fiber of the present invention adopts the melt composite spinning method, which is basically the same as the prior art. According to the composition of the fiber of the present invention, it mainly includes the following steps:

[0023] (1) Homopolymer or copolymer of the comb-shaped polymer phase change material 3-alkylthiophene, which is synthesized by oneself or bought in the market, or the mass ratio of the component A is 20~80:80~20 The homopolymer blend, after drying, removes the moisture in it, so that the moisture content reaches 50-150ppm;

[0024] (2) Transport the homopolymer, copolymer or homopolymer blend of the poly(3-alkylthiophene) to the A component metering pump of the fiber after melting by known technology, and control the quality of the A component of the fiber The percentage content is 20-60%;

[0025] (3) Using known technology to dry the fiber-forming polymer of the B component to remove moisture, so that the moistu...

Embodiment 1

[0036] A random copolymer of 3-hexadecylthiophene and 3-octadecylthiophene (average degree of polymerization 21) with a molar ratio of 20:80 is used as component A of the fiber, and polycaprolactam (intrinsic viscosity 0.75) is used as the fiber In component B, 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, and the concentric circular sheath-core composite spinning is made at 250°C to make spun yarn, which is further processed into elastic yarn.

[0037] After inspection, the fineness of the finished fiber is 132dtex / 78f, the tensile breaking strength is 3.4cN / dtex, and the elongation at break is 35%. 27°C, the heat release is 29J / g; 5% thermal weight loss temperature is 295°C; the surface specific resistance of the fiber is 3200Ω / cm; after using cyclohexane as the solvent Soxhlet extractor for extraction or treatment, the weight loss of the fiber is 4%.

Embodiment 2

[0039] A random copolymer of 3-hexadecylthiophene and 3-octadecylthiophene (average degree of polymerization 92) with a molar ratio of 80:20 is used as the A component of the fiber, and polypropylene (melt index 35g / 10min) is The B component of the fiber, after the two 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 spun side by side at 230°C to make as-spun yarn, and further bundled, drawn, crimped, Drying, shaping, cutting, and making short fibers.

[0040] After inspection, the fineness of the finished fiber is 2.4dtex, the tensile breaking strength is 2.9cN / dtex, and the elongation at break is 34%. ℃, the heat release is 19J / g; 5% thermal weight loss temperature is 247 ℃; the surface specific resistance of the fiber is 1.2 / cm; after using cyclohexane as the solvent Soxhlet extractor, the weight loss of the fiber is 6%.

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Abstract

The invention discloses a heat-storage and thermo-regulated fiber. A comb-shaped polymer phase change material is used as the component A and a fiber-forming polymer is used as the component B to prepare the heat-storage and thermo-regulated fiber by the composite melt spinning method, wherein the comb-shaped polymer phase change material is the homopolymer of poly(3-alkylthiophene), the copolymer of two kinds of 3-alkylthiophenes in the molar ratio of 20:80-80:20, or the mixture of two kinds of poly(3-alkylthiophene) homopolymers in a mixing weight ratio of 20:80-80:20; the fiber-forming polymer contains at least one of copolyacrylonitrile, copolyester, copolyamide, polypropylene and polyamide; and the weight percentages of the component A and the component B in the fiber are separately 20-60% and 80-40%. The fiber has not only good heat-storage and thermo-regulated performance, but also the characteristics of antistatic property, low leakage, good thermal stability and the like.

Description

technical field [0001] The invention relates to functional fiber technology, in particular to a heat storage and temperature regulating fiber with antistatic, heat energy absorption, storage and release functions. Background technique [0002] By implanting or coating the phase change material on the surface of the fiber, the fiber with the function of heat energy absorption and storage is called heat storage and temperature regulation (functional) fiber. Generally, phase change materials are mostly low-molecular compounds, such as hydrated inorganic salts, normal alkanes, higher fatty alcohols, higher fatty acids or higher fatty esters. When these materials are in a liquid state, they are very easy to flow, not only poor in shape retention, but also easy to cause loss or pollute the environment, so they must be sealed in containers or mixed with other adsorption support materials to obtain a relatively fixed shape before use, for example, European invention patent EP030620...

Claims

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Application Information

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IPC IPC(8): D01F8/00D01F8/12D01F8/16D01F8/06D01F8/08
Inventor 张兴祥石海峰尹亿平李剑华牛建津
Owner TIANJIN POLYTECHNIC UNIV
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