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Water-based auto parts anti-corrosion coating and preparation method thereof

A technology for auto parts and anti-corrosion coatings, used in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor corrosion resistance and outdoor weather resistance, slow drying speed of paint film, poor water resistance, etc. Achieve the effect of improving anti-ultraviolet radiation performance, improving anti-aging performance and excellent comprehensive performance

Active Publication Date: 2019-11-15
石家庄市油漆厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alkyd resin paint is easy to paint, and the formed coating film is plump and bright; however, alkyd resin has the disadvantages of slow drying speed, low hardness, poor water resistance, corrosion resistance and outdoor weather resistance of the paint film.

Method used

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  • Water-based auto parts anti-corrosion coating and preparation method thereof
  • Water-based auto parts anti-corrosion coating and preparation method thereof
  • Water-based auto parts anti-corrosion coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1-3

[0032] Preparation of water-based modified alkyd resin:

[0033] Water-based modified alkyd resin a, water-based modified alkyd resin b, and water-based modified alkyd resin c were prepared using the formula weight composition shown in the following table.

[0034]

[0035]

[0036] The preparation method of water-based modified alkyd resin is as follows:

[0037] Step a: Add dehydrated ricinoleic acid, phthalic anhydride, trimethylolpropane, pentaerythritol, and xylene into the reactor according to the formula amount, feed nitrogen, heat to 200-230°C for reaction, and measure the acid value every 30 minutes;

[0038] Step b: When the acid value drops to 8-12mgKOH / g, cool down to 80-100°C, add IPDI and aminopropyltriethoxysilane, and react for 2h;

[0039] Step c: After heating up to 200-230°C, add trimellitic anhydride, measure the acid value every 30 minutes, and when the acid value drops to 15-30mgKOH / g, cool down to below 100°C and add propylene glycol methyl ether ...

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Abstract

The invention discloses a water-based anticorrosion coating for auto parts, which comprises the following raw materials in parts by weight: 1-5 parts of nano slurry, 25-29 parts of water-based modified alkyd resin, 1-2 parts of dimethylethanolamine, and tripolyphosphoric acid 11-20 parts of aluminum, 8-7 parts of calcium carbonate, 25-38 parts of deionized water, 1.3-2.8 parts of defoamer, 2-2.5 parts of dispersant, 1-2 parts of anti-corrosion agent, and the nano-slurry contains nano-titanium dioxide and nano zinc oxide, the water-based modified alkyd resin is a silicone polyurethane composite modified alkyd resin, the present invention can improve the anti-aging performance of the coating, improve the wear resistance of the coating, and effectively improve the anti-aging properties of the alkyd resin coating Ultraviolet radiation performance, with high hardness, good flexibility, good water resistance and so on.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based anti-corrosion coating for auto parts, and at the same time, the invention also relates to a preparation method of the anti-corrosion coating for auto parts. Background technique [0002] Automotive coatings represent the highest level in the coatings industry, including OEM paints, refinish paints, and accessory paints, of which about 30% are accessory paints, which are mainly used in axles, chassis, frames, drive shafts, steering gears and other parts. With the increasingly strong concept of environmental protection, many auto parts coating lines that originally used solvent-based anti-corrosion coatings have begun to switch to water-based anti-corrosion coatings. Compared with solvent-based coatings, water-based coatings can greatly reduce the use of volatile organic compounds, which can not only reduce environmental pollution, but also reduce physical damage to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D5/08C09D7/61C08G18/42
CPCC08G18/4288C08K5/101C08K2003/2241C08K2003/2296C08K2003/327C08K2201/011C09D5/084C09D175/14
Inventor 王岩凌芹刘宏生孙立芳焦辉军田会社马爱民
Owner 石家庄市油漆厂
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