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Heat-absorbing paint

An endothermic coating and light absorber technology, applied in the coating field, can solve the problems of complex process flow, high cost and high requirements, and achieve the effects of increasing pleochroism, reducing preparation cost and improving heat resistance.

Pending Publication Date: 2016-06-22
GUANGXI CHAOXING SOLAR ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current solar heat-absorbing coatings are full of researches specifically aimed at the weather resistance and water resistance of solar energy coatings. Nowadays, nano-materials are used as raw materials for heat-absorbing materials, which can improve the weather resistance and heat-absorbing efficiency of coatings. For example, Chinese patent CN102286243A , but the cost is extremely high; there are also changes in the formulation of pigments to improve the weather resistance of the prepared coatings, such as Chinese patent CN102134428B, but its preparation process is complicated and requires high

Method used

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  • Heat-absorbing paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of heat-absorbing paint, raw material is:

[0032] Film-forming agent: modified casein-gelatin 50kg;

[0033] Coalescing aids: 6kg hexanediol butyl ether acetate, 4kg ethylene glycol monopropyl ether;

[0034] Light absorbing agent: blend 8kg of cobalt blue powder, 12kg of cobalt manganese copper oxide and 15kg of organic carbon black into black;

[0035] Solvent: acetic acid 6kg, anhydrous butyl acetate 8kg, glycerol 6kg;

[0036] Auxiliaries are plasticizers, coupling agents, leveling agents, wetting agents and defoamers, wherein,

[0037] Plasticizer: dibutyl phthalate 2kg;

[0038] Coupling agent: silane coupling agent 1kg, titanate coupling agent 2kg;

[0039]Leveling agent: EFKA35702kg, EFKA35801kg for uniform mixing;

[0040] Wetting agent: polysiloxane 2kg;

[0041] Defoamer: polyoxyethylene oxypropylene glycerin 1kg.

[0042] The steps of preparing the solar heat absorbing coating according to the above-mentioned raw materials are as follows:

[...

Embodiment 2

[0046] A kind of heat-absorbing paint, raw material is:

[0047] Film-forming agent: modified casein-gelatin 100kg;

[0048] Film-forming aids: 10kg hexanediol butyl ether acetate, 10kg ethylene glycol monopropyl ether, 10kg diethylene glycol monomethyl ether;

[0049] Light absorbing agent: Use 10kg of cobalt blue powder, 20kg of cobalt manganese copper oxide and 25kg of organic carbon black to make black;

[0050] Solvent: 15kg of glycerol, 15kg of tetrahydrofuran-oxypropylene copolymerized glycol and 25kg of polyurethane polyether polyol;

[0051] Auxiliaries are plasticizers, coupling agents, leveling agents, wetting agents and defoamers, wherein,

[0052] Plasticizer: dibutyl phthalate 3kg;

[0053] Coupling agent: aluminate coupling agent 2kg;

[0054] Leveling agent: YCK-13605kg;

[0055] Wetting agent: polyether modified polydimethylpolysiloxane 2kg;

[0056] Defoamer: polyoxyethylene polyoxypropylene pentaerythritol ether 3kg;

[0057] The steps of preparing th...

Embodiment 3

[0061] A kind of heat-absorbing paint, raw material is:

[0062] Film-forming agent: modified casein-gelatin 80kg;

[0063] Film-forming aids: 10kg of hexanediol butyl ether acetate, 10kg of diethylene glycol monomethyl ether, 5kg of triethylene glycol monobutyl ether;

[0064] Light absorbing agent: Use 18kg of chromium oxide green powder, 12kg of selenium cadmium sulfide powder, and 20kg of iron oxide red powder to make red;

[0065] Solvent: acetic acid 20kg, and polyurethane polyether polyol 20kg;

[0066] Auxiliaries are plasticizers, coupling agents, leveling agents, wetting agents and defoamers, wherein,

[0067] Plasticizer: dibutyl phthalate 2kg;

[0068] Coupling agent: a mixture of 2 kg of phosphate coupling agent and 2 kg of borate coupling agent;

[0069] Leveling agent: mix BYK-3332kg and TEGOGlide1002kg;

[0070] Wetting agent: polyester modified polydimethylsiloxane 3kg;

[0071] Defoamer: Polyoxypropylene 2kg.

[0072] The steps of preparing the solar h...

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Abstract

The invention discloses a heat-absorbing paint which is prepared by the following steps: uniformly dispersing a light absorber, a film former, a solvent and aids by ball milling, adding a film forming aid, and mixing to obtain the solar heat-absorbing paint. The heat-absorbing paint is prepared from the following raw materials in parts by weight: 50-100 parts of film former, 10-30 parts of film forming, 35-55 parts of light absorber, 20-50 parts of solvent and 10-30 parts of aids. The film forming aid is hexanediol butyl ether acetate, ethanediol monopropyl ether or the like. The preparation method of the film former comprises the following steps: mixing casein and gelatin according to the weight ratio of (5-10):(2-3), adding water, immersing at 15-22 DEG C, transferring to a normal temperature environment, adding a mixed solution composed of ethyl acrylate and polydimethylsiloxane in a weight ratio of (1-2):(1-3), reacting, stirring, and carrying out ultraviolet irradiation for 10-15 minutes, thereby obtaining the modified casein-gelatin. The film former is modified and used as a critical raw material for preparing the paint, so that the prepared paint has favorable weather resistance and water resistance under outdoor conditions. The preparation technique is simple and understandable, and ensures the heat absorption efficiency of the heat-absorbing paint.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a heat-absorbing coating. Background technique [0002] Energy utilization plays a pivotal role in the development of human society, but the excessive development of resources and inefficient resource utilization make human beings face a severe test. As we all know, solar energy is the most abundant and widely available renewable energy, which plays a major role in solving energy crisis and environmental problems. , making it a hot research topic in various countries. Our country is rich in solar energy resources and has broad prospects for solar energy utilization. At present, it is the first user and producer of solar water heaters in the world. [0003] Solar thermal application is one of the simplest, most direct, and most effective ways for human beings to utilize solar energy. However, due to the small and discontinuous energy density of solar energy after reaching the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/00C09D7/12C09D5/32C09D5/08C08F289/00C08F220/18
CPCC08F289/00C08L2201/08C08L2205/035C09D5/08C09D5/32C09D7/61C09D7/63C09D151/00C08L83/04C08K13/02C08K5/12C08K3/04C08K2003/2272C08K2003/3009C08F220/18
Inventor 蒙强杰孟沪生马云马广
Owner GUANGXI CHAOXING SOLAR ENERGY TECH
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