Heat storage and temperature regulation fiber and its preparation method

A technology of heat storage and temperature regulation and fiber, which is applied in fiber processing, filament/thread forming, textiles and papermaking, etc. It can solve the problems of low heat storage, reduced application value, low proportion of energy storage and temperature regulation fiber phase change materials, etc. , to achieve the effect of ensuring continuity, good interfacial compatibility, and eliminating supercooled crystallization

Active Publication Date: 2020-05-12
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the proportion of phase change materials contained in the energy storage temperature-regulating fiber is relatively low, so its heat storage is low, which greatly reduces its application value

Method used

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  • Heat storage and temperature regulation fiber and its preparation method
  • Heat storage and temperature regulation fiber and its preparation method
  • Heat storage and temperature regulation fiber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Poly(styrene-co-maleic anhydride)-g-n-octadecyl alcohol with a grafting degree of 50% is used as a comb-shaped polymer phase change material, and polyethylene terephthalate with a melting temperature of 240°C Alcohol ester (PET, intrinsic viscosity 0.58) is a fiber-forming polymer. After drying to a moisture content of less than 50ppm, the mass ratio of the comb-like polymer phase change material to the fiber-forming polymer is controlled to be 40:60, at 250°C Melt compound spinning is made into concentric circular primary fibers, which are further processed into elastic yarns after being twisted by 1.5 times of drafting and 50 twists / 10cm12s, shaped and dried, and processed into long fibers.

[0032] After inspection, the fineness of the short fiber obtained in this embodiment is 1.9dtex, the tensile breaking strength is 3.5cN / dtex, and the elongation at break is 20%; the endothermic temperature of the fiber is 49.3°C, the heat absorption is 38J / g, and the heat release ...

Embodiment 2

[0034]Random copolymerization with poly(styrene-co-maleic anhydride)-g-n-octadecyl alcohol / n-tetradecyl alcohol (the molar ratio of n-stearyl alcohol and n-tetradecyl alcohol is 50:50) Comb-shaped polymer phase change material (grafting degree: 47%) is used as fiber, and polypropylene (melt index: 35g / 10min) is used as fiber-forming polymer. The mass ratio of the phase change material and the fiber-forming polymer is 50:50, and the sea-island type primary fiber is produced by melt composite spinning at 250°C, and further processed into elastic yarn after being twisted by 1.5 times drafting and 50 twists / 10cm12s.

[0035] After inspection, the fineness of the stretch yarn obtained in this embodiment is 80dtex / 48f, the tensile breaking strength is 2.8cN / dtex, and the elongation at break is 25%; The heat temperature is 34°C, and the heat release is 31J / g; the temperature of 5% thermal weight loss is 245°C; after extraction with cyclohexane as solvent, the mass loss rate of the fi...

Embodiment 3

[0037] Poly(styrene-co-maleic anhydride)-g-n-hexacosanol with a grafting degree of 48% is used as a comb-shaped polymer phase change material, and polycaprolactam (intrinsic viscosity number 0.65) is used as a fiber-forming polymer After the material is dried until the moisture is lower than 50ppm, the mass ratio of the comb-shaped polymer phase change material and the fiber-forming polymer is controlled to be 40:60, and the concentric circular primary fiber is made by melt composite spinning at 260 °C, and further passed 1.5 times drafting, 50 twists / 10cm12s twisting, processed into stretch yarn, shaped and dried, processed into long fibers.

[0038] After inspection, the fineness of the short fiber obtained in this embodiment is 3.2dtex, the tensile breaking strength is 3.3cN / dtex, and the elongation at break is 26%; the endothermic temperature of the fiber is 74°C, the heat absorption is 53J / g, and the heat release The temperature is 62°C, the heat release is 56J / g; the tem...

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Abstract

The invention discloses a heat storage temperature regulation fiber and a preparation method thereof. The heat storage temperature regulation fiber is of a skin-core structure, and the skin layer is afiber forming polymer; the core layer is a comblike polymer phase change material; the comblike polymer phase change material is poly(styrene-co-maleic anhydride)-g-n-alkanol; according to the mass percentage, the mass of the comblike polymer phase change material is 15-70% that of the heat storage temperature regulation fiber. The preparation method comprises the following steps that 1, drying is performed till the water content is 40-150 ppm; 2, the fiber forming polymer and the comblike polymer phase change material are fused, different metering pumps are used for conveying the mixture toa special-shaped composite spinneret plate for extrusion, and spinning trickle is obtained; 3, the spinning trickle is cooled, dried, wound and post-processed, and the heat storage temperature regulation fiber with the form as long filament or short fiber is obtained. The fiber has the advantages of being high in heat storage amount, free of leakage, stable in performance and the like, and has thehigh application value; the preparation method is simple and easy to implement.

Description

technical field [0001] The invention relates to the field of functional fibers, in particular to a heat storage and temperature regulating fiber and a preparation method thereof. Background technique [0002] Heat storage and temperature regulating fiber is a kind of fiber with heat storage and release function made by implanting phase change material into the fiber or coating on the surface of the fiber. In the heat storage and temperature adjustment fiber, the phase change material plays the role of heat storage and temperature adjustment. Organic polymer energy storage materials have attracted widespread attention. Organic polymer phase change materials have gradually replaced traditional inorganic phase change materials due to their high enthalpy, stable structure and excellent thermal stability. At present, there are two types of organic phase change materials used to develop heat storage and temperature regulation fibers: one is linear phase change materials, such as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F8/12D01F8/06D01F8/10D01D5/253D01D5/34
CPCD01D5/253D01D5/34D01F8/06D01F8/10D01F8/12D01F8/14
Inventor 石海峰李梦勤王海霞许红星李树芹
Owner TIANJIN POLYTECHNIC UNIV
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