Phase-change temperature regulation coating and preparation method thereof

A technology of phase change materials and coatings, applied in conductive coatings, antifouling/underwater coatings, coatings, etc., can solve the problem that the thermal conductivity of materials cannot be improved, it is difficult to ensure the effective coating of phase change materials, and the phase change performance is not improved. and other problems, to achieve the effect of realizing thermal response, fast thermal response, and improving temperature regulation performance

Active Publication Date: 2018-12-07
HANGZHOU GAOXI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two methods have great defects. The former only improves the overall thermal conductivity of the material, but the phase change performance has not been improved. The latter uses modified graphene and graphene oxide to coat the phase. Not only is it difficult to ensure the effective coating of phase change materials, but also it is impossible to improve the overall thermal conductivity of the material

Method used

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  • Phase-change temperature regulation coating and preparation method thereof
  • Phase-change temperature regulation coating and preparation method thereof
  • Phase-change temperature regulation coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Drying the single-layer graphene oxide dispersion liquid with a size of 1-5 microns by atomization drying method to obtain graphene oxide microspheres with a carbon-to-oxygen ratio of 3. The atomization drying temperature is 130°C.

[0028] (2) Place the graphene oxide microspheres obtained in step (1) in a tube furnace, raise the temperature to 1300° C. at 10° C. / min, and keep it warm for 1 hour to obtain graphene hollow microspheres.

[0029] (3) Mix 100 parts by mass of eicosane and 5 parts by mass of graphene hollow microspheres, heat to 40° C. to melt the eicosane, then fully stir for 30 minutes, leave to stand for vacuum degassing for 1 hour, and then press filter at 50° C. After cooling, graphene phase change microspheres are obtained.

[0030] (4) Add 30 parts of styrene-acrylic emulsion, 0.3 part of sodium polyphosphate, 70 parts of titanium dioxide, 180 parts of water and 25 parts of graphene phase change microspheres into the reactor for stirring; then a...

Embodiment 2

[0033] (1) Dry the single-layer graphene oxide dispersion liquid with a size of 20-30 microns by atomization drying method to obtain graphene oxide microspheres with a carbon-to-oxygen ratio of 3. The atomization drying temperature is 130°C.

[0034] (2) Place the graphene oxide microspheres obtained in step (1) in a tube furnace, raise the temperature to 1300° C. at 10° C. / min, and keep it warm for 1 hour to obtain graphene hollow microspheres.

[0035] (3) Mix 100 parts by mass of eicosane and 5 parts by mass of graphene hollow microspheres, heat to 40°C to melt the eicosane, then fully stir for 60 minutes, leave to stand for vacuum degassing for 1 hour, and press filter at 50°C, After cooling, graphene phase change microspheres are obtained.

[0036] (4) Add 30 parts of styrene-acrylic emulsion, 0.6 parts of sodium polyphosphate, 70 parts of titanium dioxide, 180 parts of water and 25 parts of graphene phase change microspheres into the reactor for stirring; then add 0.5 p...

Embodiment 3

[0039] (1) Dry the single-layer graphene oxide dispersion liquid with a size of 42-50 microns by atomization drying method to obtain graphene oxide microspheres with a carbon-to-oxygen ratio of 3. The atomization drying temperature is 130°C.

[0040] (2) Place the graphene oxide microspheres obtained in step (1) in a tube furnace, raise the temperature to 1300° C. at 10° C. / min, and keep it warm for 1 hour to obtain graphene hollow microspheres.

[0041](3) Mix 100 parts by mass of eicosane and 5 parts by mass of graphene hollow microspheres, heat to 40°C to melt the eicosane, then fully stir for 20min, leave to stand for vacuum degassing for 1h, and then press filter at 50°C, After cooling, graphene phase change microspheres are obtained.

[0042] (4) Add 30 parts of styrene-acrylic emulsion, 0.3 part of sodium polyphosphate, 60 parts of titanium dioxide, 170 parts of water and 25 parts of graphene phase change microspheres into the reactor for stirring; then add 1 part of d...

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Abstract

The invention discloses phase-change temperature regulation coating and a preparation method thereof. The preparation method comprises the following steps: firstly, carrying out atomization drying andthermal expansion treatment on a graphene oxide water solution to obtain a graphene microsphere with a mesoporous structure; and then fusing a phase-change material and sufficiently penetrating the phase change material into a cavity of the graphene microsphere, so as to obtain a phase-change microsphere with a core-shell structure. According to the phase-change temperature regulation coating, surplus phase-change material on the surface of the phase-change microsphere is removed through a filter pressing method, and the phase-change temperature regulation coating is obtained through adoptinga mechanical mixing method and uniformly mixing all components of the coating. The hollow graphene microsphere is used for covering the phase-change material so that leakage of the phase-change material in a utilization process is extremely reduced and the service life can be remarkably prolonged. The heat exchange between the environment and a coating layer can be effectively promoted through high heat conductivity of graphene and the heat of the coating layer can be stored and released. Furthermore, the graphene has high conductivity and antibacterial and far infrared emission properties, and the coating can obtain various new functions.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a phase-change temperature-regulating coating and a preparation method thereof. Background technique [0002] Today, the decoration and simple protection of traditional coatings can no longer meet the development of modern industry. It requires modern coatings not only to have decorative or protective functions, but also to have one or more other functions, such as heat insulation and high temperature resistance. , Resistance to special medium corrosion, self-cleaning, high insulation, high wear resistance, fire resistance, etc. At this time, functional special coatings came into being. With the development of modern technology, the requirements for functional coatings are getting higher and higher, and coatings with high performance superimposed on each other are receiving more and more attention. Phase-change temperature-regulating coatings use phase-change materials to absorb or relea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/14C09D133/04C09D5/14C09D5/24C09D7/61C09D7/63C09D7/65
CPCC08K2003/2241C08K2003/265C09D5/14C09D5/24C09D7/61C09D7/63C09D7/65C09D7/70C09D125/14C09D133/04C08L1/286C08K7/24C08K5/01C08K3/22C08K3/26C08K3/346C08K3/36
Inventor 陈琛韩燚高超
Owner HANGZHOU GAOXI TECH CO LTD
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