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Thermal fabric with photothermal conversion function and preparation method of thermal fabric

A light-to-heat conversion and fabric technology, applied in the field of textile fabrics, can solve the problems of lack of thermal insulation effect, reduction, no heat storage function, etc., and achieve excellent thermal insulation effect and good air permeability.

Inactive Publication Date: 2021-03-30
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current light-to-heat conversion thermal fabrics have no heat storage function, that is, when there is no sunlight, the temperature of the fabric will quickly drop to the ambient temperature, and the thermal insulation effect will not be achieved.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Using the in-situ emulsion polymerization method, using paraffin as the core material and polyurea as the wall material, phase-change microcapsules with a particle size of 5 μm were prepared, and a layer of polydopamine was coated on the phase-change microcapsules through the oxidative self-polymerization of dopamine to obtain Phase change microcapsules@PDA.

[0017] Wash and dry the fabric, mix the phase-change microcapsule @PDA solution, water-based polyurethane, stabilizer, and foaming agent evenly to obtain a finishing solution, use a foaming machine for high-power uniform foaming, and apply it evenly with a foam applicator To the surface of the fabric, the thickness of the coating is 0.05 mm. The finished fabric is pre-baked at 60°C for 5 minutes, and then baked at 80°C for 10 minutes to obtain the thermal fabric with light-to-heat conversion function of the present invention.

Embodiment 2-6

[0019] Phase-change microcapsules were prepared by using fatty acids, fatty alcohols, aliphatic hydrocarbons, polyethers, and polypolyols instead of paraffin in Example 1 as the core material, and other conditions were consistent with Example 1.

Embodiment 7

[0021] Using the in-situ emulsion polymerization method, using paraffin as the core material and melamine resin as the wall material, phase-change microcapsules with a particle size of 1 μm were prepared, and a layer of polydopamine was coated on the phase-change microcapsules through the oxidative self-polymerization of dopamine. Get Phase Change Microcapsules@PDA.

[0022] Wash and dry the fabric, mix the phase-change microcapsule @PDA solution, water-based polyurethane, stabilizer, and foaming agent evenly to obtain a finishing solution, use a foaming machine for high-power uniform foaming, and apply it evenly with a foam applicator To the surface of the fabric, the thickness of the coating is 0.1 mm. The finished fabric is pre-baked at 60°C for 5 minutes, and then baked at 80°C for 10 minutes to obtain the thermal fabric with light-to-heat conversion function of the present invention.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a thermal fabric with a photothermal conversion function and a preparation method of the thermal fabric. The thermal fabric is characterized in that an organic phase change material is used as a phase change microcapsule @PDA core material, a high polymer material or an inorganic material is used as a wall material, the phase change microcapsule @PDA, waterborne polyurethane and other reagents are uniformly mixed through oxidation self-polymerization of dopamine to obtain a finishing liquid, and high-power uniform foaming is carried out by using a foaming machine, the surface of the fabric is uniformly coated with the foam finishing liquid, and drying is carried out to obtain the thermal fabric with the photothermal conversion function. According to the prepared fabric, under sunlight radiation, polydopamine serves as a photothermal conversion medium, absorbed sunlight is converted into heat energy, a warming effect is generated on a human body, and meanwhile heat energy is stored through a phase-change material; and in a non-illumination environment, the heat energy stored by the phase-change material is released, warm keeping is achieved, the warm-keepingfabric has the advantages of being soft and breathable, a comfortable wearing feeling is provided for a human body, and the warm-keeping fabric has wide application prospects in the field of textile fabric.

Description

technical field [0001] The invention relates to a warm-keeping fabric with light-to-heat conversion function and a preparation method thereof, belonging to the technical field of textile fabrics. Background technique [0002] The most important function of clothing is to maintain the normal temperature of the human body and make the human body feel comfortable. When the ambient temperature is low, the thickness of the clothing is usually increased to improve the warmth retention effect. With the rapid development of science and technology and the continuous improvement of people's material and cultural living standards, people's aesthetic requirements for clothing have also been greatly improved, and clothing is becoming lighter and thinner. . Therefore, the development of light and comfortable thermal fabrics has become a research hotspot. [0003] There are passive thermal fabrics and active thermal fabrics. Among them, active thermal fabrics can absorb external energy...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00C09K5/06
CPCD06N3/14D06N3/005D06N3/0068D06N3/0061D06N3/0063C09K5/063D06N2209/123D06N2209/06
Inventor 王文涛耿伟纬姚玉元
Owner ZHEJIANG SCI-TECH UNIV
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