Surface coating for automobile aluminum profile part

A technology for surface coatings and aluminum profiles, applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of reducing the service life of aluminum profiles, shortening service life, and prone to aging, and improving the toughness of film formation. Strong protective effect, the effect of promoting the upgrading of product performance

Inactive Publication Date: 2020-12-11
MAANSHAN SANCHUAN MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with iron, aluminum profiles have better corrosion resistance, but as the environment changes, the air contains CO2, SO2, HZS and other gases. When these polluting gases encounter water vapor in the air, they will produce slightly acidic, long-term Erosion by rain and sun, still prone to corrosion
The corrosion phenomenon of aluminum profiles will not only appear on the outside, but will spread to the inside if it is not treated, the corrosion speed is fast, the service life is shortened, and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021]Example 1

[0022]A surface coating for automotive aluminum profile parts, which is made of the following components in parts by weight: 50 parts of water-based polyurethane emulsion, 20 parts of acrylic resin, 0.4 parts of modified protective agent, 1.0 part of curing agent, 0.18 part of dispersant, 0.1 part of defoaming agent, 0.2 part of leveling agent, 1.2 parts of titanium dioxide, 1.4 parts of silicon dioxide, and 33 parts of water; the preparation method of the modified protective agent is as follows:

[0023](1) Place 33 grams of calcined kaolin and 12 grams of talc in a beaker, add 3 times the volume of deionized water, stir to dissolve to obtain a mixed slurry, place it in a 60°C constant temperature water bath to heat, and add 7 grams of hydroxyethyl fiber Add the element and 0.40 g of nano-filler to the slurry, continue to stir at 400 rpm for 20 minutes, and transfer the slurry to a four-necked flask equipped with a stirrer, condenser, thermometer and constant pressure f...

Example Embodiment

[0037]Example 2

[0038]A surface coating for automotive aluminum profile parts, which is made of the following components in parts by weight: 53 parts of water-based polyurethane emulsion, 22 parts of acrylic resin, 0.5 parts of modified protective agent, 1.1 parts of curing agent, 0.19 parts of dispersant, 0.15 parts of defoaming agent, 0.25 parts of leveling agent, 1.2 parts of titanium dioxide, 1.4 parts of silicon dioxide, and 33 parts of water; the preparation method of the modified protective agent is as follows:

[0039](1) Put 35 grams of calcined kaolin and 15 grams of talc in a beaker, add 4 times the volume of deionized water, stir to dissolve to obtain a mixed slurry, place it in a 65°C constant temperature water bath and heat it to add 8 grams of hydroxyethyl fiber And 0.43 g of nano-filler were added to the slurry, stirring was continued for 25 minutes at 430 rpm, and the slurry was transferred to a four-necked flask equipped with a stirrer, condenser, thermometer and const...

Example Embodiment

[0053]Example 3

[0054]A surface coating for automotive aluminum profile parts, which is made of the following components in parts by weight: 55 parts of water-based polyurethane emulsion, 25 parts of acrylic resin, 0.6 parts of modified protective agent, 1.2 parts of curing agent, 0.20 parts of dispersant, 0.2 parts of defoamer, 0.3 parts of leveling agent, 0.09 parts of wetting agent, 1.3 parts of titanium dioxide, 1.8 parts of silicon dioxide, and 35 parts of water; the preparation method of the modified protective agent is:

[0055](1) Place 36 grams of calcined kaolin and 17 grams of talc in a beaker, add 5 times the volume of deionized water, stir and dissolve to obtain a mixed slurry, place it in a 70°C constant temperature water bath and heat it to add 9 grams of hydroxyethyl fiber Add 0.46 g of nano-filler to the slurry, continue to stir at 450 rpm for 30 minutes, and transfer the slurry to a four-necked flask equipped with a stirrer, condenser, thermometer and constant pressure...

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Abstract

The invention relates to a surface coating for an automobile aluminum profile part, which takes an environment-friendly waterborne polyurethane emulsion as a basic raw material, and a prepared modified protective agent is added into the coating, so that the film-forming toughness can be improved, the tensile strength is obviously improved, and the binding force of intermolecular bonds is obviouslyenhanced; therefore, the anti-aging performance is correspondingly enhanced; the defects of insufficient adhesive force and no wear resistance of the water-based paint can also be overcome; and the added modified protective agent can obviously enhance the corrosion resistance and wear resistance after curing and film formation, thereby preventing the permeation and diffusion of the water and corrosive medium. The prepared coating has very high chemical stability, corrosion resistance and non-mobility, the corrosion resistance of the surface of the aluminum profile is improved, the prepared water-based paint is different from common solvent type paint, the binding force to the aluminum profile is high, the protective performance cannot be gradually reduced along with prolonging of the service life of the coating, and very wide application prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of coating preparation, in particular to a surface coating for aluminum profile parts of automobiles. Background technique [0002] Aluminum and its aluminum alloys, because of their good physical and chemical properties, as well as the stable, continuous and rapid development of my country's national economy and high-tech, have promoted the rapid development of my country's aluminum smelting and aluminum profile processing industries. my country's industrial aluminum profiles account for about 30% of the total application of aluminum profiles, mainly used in the transportation industry (including automobile manufacturing, rail transit industry), equipment and machinery manufacturing, durable consumer goods industry (including light industry), etc. [0003] Among them, the proportion of aluminum profiles in the automobile manufacturing industry is gradually increasing. Compared with iron, aluminum profiles ...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D133/04C09D7/62C09D7/61C09D5/08C09D7/20
CPCC08K2003/2241C08K2003/265C08K2201/005C08K2201/011C08L2205/03C08L2205/035C09D5/08C09D175/04C09D7/20C09D7/61C09D7/62C08L33/04C08K13/06C08K3/346C08K3/34C08K3/26C08K3/22
Inventor 李孙德
Owner MAANSHAN SANCHUAN MACHINERY MFG CO LTD
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