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Waterborne damping coating used for automobiles

A damping coating, water-based technology, applied in the field of damping coatings, can solve the problems of organic solvent volatilization polluting the environment, flame retardant performance to be improved, damping performance decline, etc., to achieve good salt spray resistance, good heat dissipation performance and anti-corrosion performance, improve The effect of damping properties

Inactive Publication Date: 2018-11-30
WUHU YUANKUI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current damping coatings are difficult to meet the requirements of use, and there are mainly the following disadvantages: organic solvent-based damping materials, there is a problem of organic solvent volatilization and pollution of the environment; water-based damping coatings for automobiles have low damping performance and narrow damping temperature range; flame retardancy is still to be determined. improve
However, not all flaky fillers can improve the damping performance, and the flaky graphite and glass powder make the damping performance decrease

Method used

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  • Waterborne damping coating used for automobiles

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Experimental program
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Effect test

Embodiment 1

[0027] A water-based damping coating for automobiles, calculated in parts by weight, comprising the following raw materials:

[0028] 50 parts of styrene-acrylate emulsion, 25 parts of polyvinyl alcohol emulsion, 26 parts of polyvinyl acetate emulsion, 60 parts of modified glass powder, 8 parts of modified nano-silicon nitride-silicon dioxide composite particles, liquid environmental protection flame retardant 5 parts, preservative 2 parts, leveling agent 2 parts, lauryl alcohol ester 4 parts, thickener 1.5 parts and deionized water 45 parts.

[0029] The preparation method of modified glass powder:

[0030] Add flake glass powder into acetone, and carry out ultrasonic dispersion to obtain a dispersion liquid. Heat the dispersion liquid to 75°C, then add KH550 and water in turn and stir evenly, and dry it after the reaction is completed. The mass ratio of KH550 to flake glass powder is 1:20.

[0031] The preparation method of the modified nano-silicon nitride-silicon dioxide...

Embodiment 2

[0037] A water-based damping coating for automobiles, calculated in parts by weight, comprising the following raw materials:

[0038] 40 parts of styrene-acrylate emulsion, 30 parts of polyvinyl alcohol emulsion, 20 parts of polyvinyl acetate emulsion, 50 parts of modified glass powder, 4 parts of modified nano-silicon nitride-silicon dioxide composite particles, liquid environmental protection flame retardant 2 parts, 1 part of preservative, 1 part of leveling agent, 2 parts of dipropylene glycol monomethyl ether, 0.5 part of thickener and 30 parts of deionized water.

[0039] The preparation method of the modified nano-silicon nitride-silicon dioxide composite particles is as follows: adding nano-silicon nitride powder into the alkaline silica sol, adjusting the pH to 5.6 with oxalic acid, stirring and dispersing to obtain a silicon nitride suspension dispersion; Add the ethanol solution of polyamide and silane coupling agent KH550 dropwise to the silicon nitride suspension ...

Embodiment 3

[0043] A water-based damping coating for automobiles, calculated in parts by weight, comprising the following raw materials:

[0044] 60 parts of styrene-acrylate emulsion, 20 parts of polyvinyl alcohol emulsion, 30 parts of polyvinyl acetate emulsion, 70 parts of modified glass powder, 10 parts of modified nano-silicon nitride-silicon dioxide composite particles, liquid environmental protection flame retardant 5 parts, preservative 3 parts, leveling agent 3 parts, propylene glycol methyl ether acetate 5 parts, thickener 2 parts and deionized water 60 parts.

[0045] The preparation method of the modified nano-silicon nitride-silicon dioxide composite particles is as follows: adding nano-silicon nitride powder into the alkaline silica sol, adjusting the pH to 6.0 with oxalic acid, stirring and dispersing to obtain a silicon nitride suspension dispersion; Add the ethanol solution of polyamide and silane coupling agent KH550 dropwise to the silicon nitride suspension dispersion ...

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Abstract

Waterborne damping coating used for automobiles is provided. Raw materials of the coating include, by weight, 40-60 parts of styrene-acrylate emulsion, 20-30 parts of polyvinyl alcohol emulsion, 20-30parts of polyvinyl acetate emulsion, 50-70 parts of modified glass powder, 4-12 parts of modified nanometer silicon nitride-silica composite particles, 2-6 parts of a flame retardant, 1-3 parts of apreservative, 1-3 parts of a leveling agent, 2-6 parts of a film forming aid, 0.5-2 parts of a thickening agent and 30-60 parts of deionized water. The modified glass powder is obtained by modifying flake glass powder with a silane coupling agent. The coating has good damping performance, good mechanical performance and a wide temperature range.

Description

technical field [0001] The invention belongs to the technical field of damping coatings, in particular to a water-based damping coating for automobiles with a high damping coefficient. Background technique [0002] At present, there are many types of damping coatings at home and abroad, but from the solvent of the coatings, there are mainly two types: solvent-based and water-based. Most of the former contain organic solvents and asphalt, which are highly toxic, highly volatile, pollute the environment, and have poor workability, so they are rarely used now. The latter damping coating uses water as a solvent, has low toxicity, low odor, low cost, easy construction, and environmental protection, and is the first choice for damping coatings for urban rail vehicles. [0003] Water-based coatings use water as the dispersion medium, are non-toxic and environmentally friendly, use high-performance resins as film-formers, and use inorganic substances as fillers. They have excellent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/14C09D129/04C09D131/04C09D7/62C09D5/08
CPCC08K2201/011C08L2205/03C09D5/08C09D7/62C09D125/14C08L29/04C08L31/04C08K13/06C08K9/06C08K3/40C08K3/34C08K3/36C08K9/08
Inventor 章波郭元
Owner WUHU YUANKUI NEW MATERIAL TECH CO LTD
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