Endothermic coating for solar water heater

A technology for solar water heaters and endothermic coatings, applied in the field of solar energy, can solve problems such as poor weather resistance and waterproofness of endothermic coatings, and achieve the effects of low cost, reduced splashing, and improved stability.

Inactive Publication Date: 2018-08-10
JIANGSU SHUANGNENG SOLAR ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a heat-absorbing paint for solar water heaters that can solve the problems of poor weather resistance and water resistance of the heat-absorbing paint and ensure the heat-absorbing efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The solar water heater heat-absorbing coating of the present invention is made of the following components according to the proportion by weight:

[0013] 33 parts of acrylate modified composite emulsion, 1 part of silane coupling agent, 2 parts of titanium dioxide, 1 part of organic bentonite, 8 parts of curing agent, 43 parts of absorbent, 13 parts of solvent, 6 parts of film forming agent, 2 parts of humidity conditioner , 4 parts of dispersant, 2 parts of thickener, 3 parts of dibutyl phthalate, 1 part of acetone; the plasticizer includes the following components by weight: 11 parts of phthalic anhydride acetate, polychloride 12 parts of ethylene, 3 parts of ethylene glycol, 13 parts of polyvinyl chloride, 1 part of ethylene glycol.

[0014] In the above formula, the solvent includes at least two of propylene glycol, ethylene glycol, anhydrous butyl acetate or glycerin, and the acrylate modified composite emulsion consists of 7-8 parts of acrylate emulsion, 6-8 part...

Embodiment 2

[0016] The solar water heater heat-absorbing coating of the present invention is made of the following components according to the proportion by weight:

[0017] 42 parts of acrylate modified composite emulsion, 3 parts of silane coupling agent, 5 parts of titanium dioxide, 2 parts of organic bentonite, 14 parts of curing agent, 62 parts of absorbent, 17 parts of solvent, 9 parts of film forming agent, 4 parts of humidity conditioner , 8 parts of dispersant, 4 parts of thickener, 7 parts of dibutyl phthalate, 5 parts of acetone; the plasticizer includes the following components by weight: 23 parts of phthalic anhydride acetate, 15 parts of polyvinyl chloride, 7 parts of ethylene glycol, 23 parts of polyvinyl chloride, 10 parts of ethylene glycol.

[0018] In the above formula, the solvent includes at least two of propylene glycol, ethylene glycol, anhydrous butyl acetate or glycerin, and the acrylate modified composite emulsion consists of 7-8 parts of acrylate emulsion, 6-8 p...

Embodiment 3

[0020] The solar water heater heat-absorbing coating of the present invention is made of the following components according to the proportion by weight:

[0021] 37 parts of acrylate modified composite emulsion, 2 parts of silane coupling agent, 3 parts of titanium dioxide, 2 parts of organic bentonite, 11 parts of curing agent, 54 parts of absorbent, 15 parts of solvent, 8 parts of film-forming agent, 3 parts of humidity-conditioning agent , 6 parts of dispersant, 3 parts of thickener, 5 parts of dibutyl phthalate, 3 parts of acetone; the plasticizer includes the following components by weight: 17 parts of phthalic anhydride acetate, 13 parts of polyvinyl chloride, 5 parts of ethylene glycol, 18 parts of polyvinyl chloride, 5 parts of ethylene glycol.

[0022] In the above formula, the solvent includes at least two of propylene glycol, ethylene glycol, anhydrous butyl acetate or glycerin, and the acrylate modified composite emulsion consists of 7-8 parts of acrylate emulsion,...

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PUM

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Abstract

The invention relates to an endothermic coating for a solar water heater. The coating is prepared from the following components in parts by weight: 33-42 parts of an acrylate modified composite emulsion, 1-3 parts of a silane coupling agent, 2-5 parts of titanium dioxide, 1-2 parts of organic bentonite, 8-14 parts of a curing agent, 43-62 parts of an absorbent, 13-17 parts of a solvent, 6-9 partsof a film-forming agent, 2-4 parts of a humidity-controlling agent, 4-8 parts of a dispersing agent, 2-4 parts of a thickening agent, 3-7 parts of dibutyl phthalate and 1-5 parts of acetone; and a plasticizer comprises the following components in parts by weight: 11-23 parts of phthalic anhydride acetate, 12-15 parts of polyvinyl chloride, 3-7 parts of ethylene glycol acetate, 13-23 parts of polyvinyl chloride, and 1-10 parts of ethylene glycol acetate. The prepared solar endothermic coating provided by the invention has the advantages of environmental protection, low costs, low plasticizing temperature, good binding performance, low residual viscosity, and stronger weather resistance.

Description

technical field [0001] The invention relates to the field of solar energy, in particular to a heat-absorbing paint for a solar water heater. Background technique [0002] 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 earth, it has brought difficulties to large-scale development and utilization. For a long time, how to convert low-grade solar energy into high-grade thermal energy and enrich solar energy so as to maximize the use of solar energy has become a hot topic of research. Among the existing photothermal application technologies, selective absorption coating technology is recognized as the core technology, which plays a vital role in improving the efficiency of solar thermal conversion and promoting large-scale solar thermal applications. [0003] As we all know, solar energy absorbing coatings...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D175/14C09D163/10C09D5/32C09D7/61C09D7/62C09D7/63C09D7/65F24S70/275
CPCY02E10/40C09D133/04C08K2003/2241C08L2205/025C08L2205/035C08L2205/08C09D5/32C09D7/61C09D7/62C09D7/63C09D7/65C09D163/10C09D175/14C08L75/14C08L63/10C08L33/04C08L27/06C08K13/06C08K3/22C08K5/12C08K3/346
Inventor 贲道祥
Owner JIANGSU SHUANGNENG SOLAR ENERGY
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