A discontinuous phase change temperature-regulating fiber and its preparation method

A technology of temperature-regulating fibers and phase-change fibers, which is applied in fiber processing, fiber chemical characteristics, and rayon manufacturing, etc., can solve the problems of long-term effect and insufficient reliability, and achieve strong temperature-regulating ability, low preparation cost, and reduce pollution effect

Active Publication Date: 2021-08-10
广东圣达安实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the core layer phase change material is continuous, once the skin layer material is damaged, the core layer phase change material will continuously overflow in the liquid state, so the use of this structural phase change fiber is not long-lasting and reliable.

Method used

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  • A discontinuous phase change temperature-regulating fiber and its preparation method
  • A discontinuous phase change temperature-regulating fiber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Accurately weigh 10g of acrylic acid, 0.1g of azobisisobutylcyanide and 0.1g of carbon nanotubes in a 50mL beaker, then use a magnetic stirrer to stir evenly at room temperature at 200r / min, and pass in nitrogen for 10min to obtain a monomer mixture liquid.

[0031] (2) Connect the polypropylene hollow fiber to channel 3 of the microfluidic chip. At 30°C, use a microsyringe pump to inject the monomer mixture into channel 1 at a flow rate of 10 μL / min; at the same time use a microsyringe pump to inject n-octadecane liquid into channel 2 at a flow rate of 8 μL / min. The two liquids are fed into the hollow fiber through channel 3. After the fiber cavity is filled, both ends are heat-sealed to obtain a phase change fiber precursor.

[0032] (3) Place the phase change fiber precursor under a UV lamp (power 500W, dominant wavelength 253nm), fix the distance between the light source and the fiber at 10cm, and irradiate for 60min to polymerize the acrylic acid in the fiber...

Embodiment 2

[0034] (1) Accurately weigh 10g of acrylamide, 0.05g of (2,4,6 trimethylbenzoyl) diphenylphosphine oxide and 1g of boron nitride in a 50mL beaker, and then use a magnetic stirrer at room temperature 200r / min Stir evenly, and pass through nitrogen for 10min to obtain a monomer mixture.

[0035] (2) Connect the polypropylene hollow fiber to channel 3 of the microfluidic chip. At 40°C, use a microsyringe pump to inject the monomer mixture into channel 1 at a flow rate of 9 μL / min; at the same time use a microsyringe pump to inject n-eicosane liquid into channel 2 at a flow rate of 7 μL / min. The two liquids are fed into the hollow fiber through channel 3. After the fiber cavity is filled, both ends are heat-sealed to obtain a phase change fiber precursor.

[0036] (3) Place the phase change fiber precursor under a UV lamp (power 300W, dominant wavelength 366nm), fix the distance between the light source and the fiber at 10cm, and irradiate for 60min to polymerize the acrylamide...

Embodiment 3

[0038] (1) Accurately weigh 10g of methyl methacrylate, 0.08g of 2-isopropylthioxanthone and 0.5g of nano-silver powder in a 50mL beaker, then stir evenly at room temperature at 200r / min with a magnetic stirrer, Nitrogen gas was passed through for 10 minutes to obtain a monomer mixture.

[0039] (2) Connect the polypropylene hollow fiber to channel 3 of the microfluidic chip. At 30°C, use a microsyringe pump to inject the monomer mixture into channel 1 at a flow rate of 10 μL / min; meanwhile use a microsyringe pump to inject PEG2000 into channel 2 at a flow rate of 8 μL / min. The two liquids are fed into the hollow fiber through channel 3. After the fiber cavity is filled, both ends are heat-sealed to obtain a phase change fiber precursor.

[0040] (3) Place the phase change fiber precursor under an ultraviolet lamp (power 600W, dominant wavelength 382nm), fix the distance between the light source and the fiber at 10cm, and irradiate for 60min to polymerize the methyl methacry...

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Abstract

The invention belongs to the field of functional fiber materials, and discloses a discontinuous phase change temperature-regulating fiber and a preparation method thereof. The discontinuous phase-change temperature-regulating fiber has a sheath-core structure, and the core material includes a phase-change material, a core polymer, and a heat-conducting additive. The phase-change material is separated by a core polymer and has a discontinuous structure. fiber polymer. The phase-change temperature-regulating fiber material prepared by the invention has a multi-layer structure, high encapsulation rate, and strong temperature-regulating ability; the phase-change material is separated by polymers and has a discontinuous structure, which can prevent the phase-change material from being continuous in a liquid state Overflow, good stability in use.

Description

technical field [0001] The invention belongs to the field of functional fiber materials, and in particular relates to a discontinuous phase change temperature-regulating fiber and a preparation method thereof. Background technique [0002] A phase change material is a chemical material that utilizes the latent heat of phase change to store and release energy. Within a certain temperature range, the phase change material absorbs heat when heated and melts and releases heat when cooled and solidified, so as to achieve the function of temperature regulation. Composite shaped phase change material encapsulates the phase change material and prevents the phase change material from losing or interacting with surrounding substances during use. Composite shaped phase change materials include phase change microcapsules and phase change fibers. Temperature-regulating fibers and fabrics containing phase change materials can improve thermal physiological comfort, so they can be applied...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/06D01F8/10D01F1/10D01F8/08D01D5/34
Inventor 严玉蓉林超刘政宇柯涵瀚黄楚云李伟培
Owner 广东圣达安实业有限公司
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