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Interface paint with high hydrophobicity, heat conductivity and adhesion

A technology with high thermal conductivity and high adhesion, applied in the direction of coating, etc., can solve the problems of poor film surface hardness, low hydrophobicity, poisoning, etc.

Inactive Publication Date: 2006-08-16
李跃
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are three problems in this three-character interface coating. Problem one, the used dispersion medium in the three-character interface coating is industrial toluene. According to the classification of damage to human health, toluene belongs to the second category, which is harmful or slightly harmful to a certain extent. Toxic solvents; according to the hazard classification under the conditions of factory use, toluene belongs to the second category, that is, toxic solvents
Therefore, the stability of this three-character interface coating is poor, resulting in the precipitation of solid particles
Question 3: Although the original three-character interface coating film has the advantages of good compatibility between the film-forming base material and the solid particles, flexibility and relatively strong adhesion, the hardness of the film surface is poor and the hydrophobicity is not very high.

Method used

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  • Interface paint with high hydrophobicity, heat conductivity and adhesion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In Example 4 of patent ZL 001 10559.0, WGS-0310 is applied to the evaporator of Jetta automobile air conditioner. The performance test data of the single evaporator shows that the air side capacity is improved with WGS-0310 coating film compared with no coating film up 3.4%. In the present invention, polyester-modified dimethylsiloxane (BYK-310) is added to WGS-0310, and the amount added is the film-forming base material in WGS-0310 (5% by volume), The coating solution with additive BYK-310 was applied to the evaporator of the Zhengzhou Nissan automobile air conditioner. On the same test bench, the test data of the performance test of the evaporator monomer showed that the air with this coating film was better than that without the coating film. Lateral capacity increased by 9.02% > 3.4%. There may be other factors, but the addition of BYK-310 to the improved three-dimensional interface coating has a positive effect.

Embodiment 2

[0037] The purpose of this example is to experimentally verify the dispersion stability of the coating solution prepared by silicone oil-treated fumed silica (R202, initial average particle size 12 nm, white amorphous powder).

[0038] The film-forming base material is W33-15, and its volume is V W Represent; dispersion medium (1) trichloroethane, its volume is V Cl Express, dispersion medium (2) methyl ethyl ketone, its volume is V b Indicates; the solid particle is R202, and its volume is V S Expressed; the auxiliary agent is YGO-1401, and its volume is V v express. The volume ratio of each component of this composition is:

[0039] V W :V v :V Cl :V b :V S =1:0.1:1.5:1.5:5.5

[0040] After the above mixture was prepared, it was dispersed in an ultrasonic homogenizer for 1 hour. The viscosity of the coating liquid is 13.6 seconds for Tu-4 cups. Dip the glass slide [25.4×76.2mm (1″×3″), 1mm thick] into the coating solution, stay for 20 seconds, take it o...

Embodiment 3

[0043] Film-forming base material W33-15, its volume is V W Expressed; the dispersion medium is trichloroethane, and its volume is V Cl Indicates; solid particle (1) R202, its volume is V S Express, solid particle (2) ordinary pigment carbon black, its volume is V C Represent; auxiliary agent (1) YGO-1401, its volume is V v Indicates that the auxiliary agent (2) BYK-310, its volume is V 310 (3) Silicone oil 201-1000 for active group adsorption on carbon black is dimethyl silicone oil with a viscosity of 1000mm 2 / s (medical sanitary grade, produced by Shanghai Resin Factory), its volume is V 201 express.

[0044] The volume ratio of each component of this composition is:

[0045] V W :V v :V 201 :V 310 :V Cl :V C :V S =1:0.1:0.01:0.05:3:2:3.5

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Abstract

A high-hydrophobicity, heat conductivity and adhesivity pigment of interface is prepared by taking methyl chloroform and butanone as medium, liquid-phase treating ordinary carbon black by silicone oil to hydrophobic activate, forming coating into dense methyl surface by polyester modified dimethylsilicone and agitation dispersing by supersonic homogenizer. The formed coating (2) is three-dimensional cross-linking network of cured polyphenylene methyl resin, which contains nanometer carbon black and silicon dioxide, and it forms dense methyl thin layer (3) on coating surface. It can be used to treat heat exchanger surface (1) of indoor apparatus and outer tube fin of household air conditioner. It has good hardness and is non- toxic.

Description

technical field [0001] The invention relates to a functional coating for metal surfaces, in particular to a composition of functional coatings with high hydrophobicity, high thermal conductivity and high adhesion for the surface of an evaporator of a compression air conditioner. Background technique [0002] In the prior art, Chinese invention patent ZL 001 10559.0 discloses an interface coating with high hydrophobicity, high thermal conductivity and high adhesion (hereinafter referred to as three-character interface coating). There are three problems in this three-character interface coating. Problem one, the used dispersion medium in the three-character interface coating is industrial toluene. According to the classification of damage to human health, toluene belongs to the second category, which is harmful or slightly harmful to a certain extent. Toxic solvents; according to the hazard classification under the conditions of factory use, toluene belongs to the second categ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04
Inventor 舒毅舒品舒华李跃
Owner 李跃
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