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Electrophoretic paint with high weather resistance and better spring coverage and preparation method thereof

An electrophoretic coating and covering technology, applied in electrophoretic coatings, anti-corrosion coatings, coatings, etc., can solve the problems of not meeting the weather resistance requirements of topcoats, only reaching 250 hours, poor corrosion resistance, etc., and achieving good bath stability , Easy to paint, good decorative effect

Inactive Publication Date: 2017-01-11
HAOLISEN COATING SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aging time of weather-resistant electrophoretic coatings on the market with a QUV aging test loss rate of ≤10% is less than 800 hours, and their corrosion resistance is poor. They lack a high weather resistance, salt spray resistance, and sharp edge coverage. Good Cathodic Electrodeposition Paint for Different Color Systems
[0005] Invention patent (CN 1757683A) discloses a preparation method of cathodic electrophoretic coating with high weather resistance. The coating is prepared by combining closed polyurethane resin and epoxy resin. Due to the presence of epoxy resin, the weather resistance can only reach 250 hours of UV aging Gloss loss rate ≤ 10%, far from meeting the weather resistance requirements as a topcoat

Method used

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  • Electrophoretic paint with high weather resistance and better spring coverage and preparation method thereof
  • Electrophoretic paint with high weather resistance and better spring coverage and preparation method thereof
  • Electrophoretic paint with high weather resistance and better spring coverage and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1) The formula of the epoxy grafted fluorine-containing cationic acrylic acid modified resin:

[0036]

[0037] Mix glycidyl methacrylate, hydroxypropyl methacrylate, methyl methacrylate, n-butyl acrylate, trifluorooctyl methacrylate, styrene, and even benzoyl peroxide according to the formula For use, it is called mixed solution 1; the azobisisobutyronitrile and butyl acetate in the formula are mixed evenly for use, and it is called mixed solution 2. Add methyl isobutyl ketone, ethylene glycol butyl ether and epoxy resin into a reaction vessel with a stirrer and a condenser according to the formula, blow nitrogen gas, and raise the temperature to 115°C. After the epoxy resin is completely dissolved, start Add the mixed solution 1 dropwise, keep it for half an hour after dropping it for 4 hours, then add the mixed solution 2 dropwise, finish dropping it for half an hour, then keep it warm for 1 hour, cool down to 105°C, then add diethanolamine dropwise according to t...

Embodiment 2

[0050] 1) The formula of the epoxy grafted fluorine-containing cationic acrylic acid modified resin:

[0051]

[0052]

[0053] Mix glycidyl methacrylate, hydroxypropyl methacrylate, methyl methacrylate, n-butyl acrylate, trifluorooctyl methacrylate, styrene, and even benzoyl peroxide according to the formula For use, it is called mixed solution 1; the azobisisobutyronitrile and butyl acetate in the formula are mixed evenly for use, and it is called mixed solution 2. Add methyl isobutyl ketone, ethylene glycol butyl ether and epoxy resin into a reaction vessel with a stirrer and a condenser according to the formula, blow nitrogen gas, and raise the temperature to 115°C. After the epoxy resin is completely dissolved, start Add the mixed solution 1 dropwise, keep it for half an hour after dropping it for 4 hours, then add the mixed solution 2 dropwise, finish dropping it for half an hour, then keep it warm for 1 hour, cool down to 105°C, then add diethanolamine dropwise ac...

Embodiment 3

[0066] 1) The formula of the fluorine-containing cationic acrylic modified resin:

[0067]

[0068]

[0069] Mix glycidyl methacrylate, hydroxypropyl methacrylate, methyl methacrylate, n-butyl acrylate, trifluorooctyl methacrylate, styrene, and even benzoyl peroxide according to the formula For use, it is called mixed solution 1; the azobisisobutyronitrile and butyl acetate in the formula are mixed evenly for use, and it is called mixed solution 2. Add methyl isobutyl ketone, ethylene glycol butyl ether and E-20 epoxy resin into a reaction vessel with a stirrer and a condenser according to the formula amount, blow nitrogen gas, and raise the temperature to 115°C until the epoxy resin is completely dissolved Finally, start to add the mixed solution 1 dropwise, keep it for half an hour after dropping it for 4 hours, then add the mixed solution 2 dropwise, finish it for half an hour, keep it warm for 1 hour, cool down to 105°C, then add diethanolamine dropwise according to ...

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Abstract

The invention relates to electrophoretic paint with high weather resistance and better spring coverage and a preparation method thereof. The electrophoretic paint is prepared by high weather resistance acrylic acid modified emulsion and weather-resistant color paste according to the ratio of 8:1, the high weather resistance acrylic acid modified emulsion is obtained by reacting 33-39 parts of epoxy grafted fluoride cation acrylic modified resin, 2-3 parts of microgel, 14-16 parts of sealing, 0.8-1 part of neutralizer and 44-52.2 parts of deionized water; the weather-resistant color paste is prepared by mixing and grinding 15-18 parts of acrylic acid grinding resin, 1-2 parts of surfactant, 42-50 parts of deionized water and 34-38 parts of pigment filler. According to the painting, the coating appearance is flat and bright, the yellowing resistance is good, and the coating has excellent mechanical property, bath stability, weather resistance, corrosion resistance and spring coverage.

Description

[0001] [technical field] [0002] The invention belongs to the field of cathodic electrophoretic paint, in particular to an electrophoretic paint with high weather resistance and good sharp change coverage and a preparation method thereof. [0003] [Background technique] [0004] After decades of development, cathodic electrophoretic coatings have been widely used in the automotive industry, building materials, hardware, home appliances, furniture and other metal coating fields. Epoxy cathodic electrophoretic coatings have excellent adhesion and anti-corrosion properties, but due to the poor weather resistance of epoxy resins, they cannot be used as topcoats, while acrylic cathodic electrophoretic coatings have good color retention, gloss retention, and weather resistance Good and full coating gloss, can meet the requirements of single-layer coating and reduce construction cost. However, the aging time of weather-resistant electrophoretic coatings on the market with a QUV agin...

Claims

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Application Information

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IPC IPC(8): C09D5/44C09D5/08C09D151/08C08F283/10C08F220/32C08F220/28C08F220/14C08F220/18C08F220/22C08F212/08
CPCC09D151/08C08F283/10C09D5/08C09D5/4415C09D5/4473C08L2201/08C08L33/00C08F220/325C08F220/281C08F220/1804
Inventor 徐庆刘薇薇苏献兰陈豪杰胡浩东凌国成万以明
Owner HAOLISEN COATING SHANGHAI
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