Waterborne metallic paint and preparation thereof

A water-based metal coating and coating technology, applied in the direction of coating, etc., to achieve the effect of less emission, full coating film and good heat resistance

Active Publication Date: 2009-07-22
中山创美涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing products of this type still need to be further improved in terms of adhesion, impact resistance, gloss, solid content and viscosity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 55 parts by weight of n-butanol into the reactor and heat up to 115°C, add dropwise 50 parts by weight of acrylic acid containing 8wt%, methacrylic acid of 7wt%, ethyl acrylate of 5wt%, butyl acrylate of 42wt%, 10wt% % of butyl methacrylate, 3wt% of methyl methacrylate, 8wt% of hydroxyethyl acrylate, 2wt% of hydroxypropyl acrylate, 3wt% of glycidyl methacrylate, 5wt% of styrene, 7wt% % n-octyl acrylate acrylic mixed monomer, 0.3 parts by weight of cumene peroxide, and 0.1 parts by weight of n-butyl mercaptan. 0.1 parts by weight of cumene peroxide, continue to keep warm for 5 hours and then vacuumize to remove n-butanol, then lower the temperature of the reaction system to below 60°C, then neutralize the pH value to 6.5 with ammonia water or organic amine neutralizer, and finally Add appropriate amount of water to adjust the solid content to 45wt%.

Embodiment 2

[0025] Add 60 parts by weight of n-butanol into the reactor and heat up to 120°C, add dropwise 40 parts by weight of acrylic acid containing 10wt%, methacrylic acid of 3wt%, ethyl acrylate of 8wt%, butyl acrylate of 37wt%, 2wt% % of butyl methacrylate, 5wt% of methyl methacrylate, 10wt% of hydroxyethyl acrylate, 2wt% of hydroxypropyl acrylate, 5wt% of glycidyl methacrylate, 15wt% of styrene, 3wt% % n-octyl acrylate acrylic mixed monomer, 0.4 parts by weight of cumene peroxide, and 0.3 parts by weight of n-butyl mercaptan. 0.1 parts by weight of cumene peroxide, continue to keep warm for 3 hours and then vacuumize to remove n-butanol, then lower the temperature of the reaction system to below 60°C, then neutralize the pH value to 6.5 with ammonia water or organic amine neutralizer, and finally Add appropriate amount of water to adjust the solid content to 50wt%.

Embodiment 3

[0027] Take by weight according to the following proportions: water-soluble resin prepared in Example 1: 30%, hexamethoxymethylmelamine resin: 4%, triethylamine: 0.1%, propylene glycol ether: 0.5%, water: 30%, Polyacrylate block copolymer dispersion: 1.5%, non-silicone defoamer 0.5%, acrylate leveling agent 0.4%, pigment red: 1%, titanium dioxide: 29.0%, barium sulfate: 3%. Disperse and stir the weighed self-made water-soluble resin, water, polyacrylate block copolymer dispersant and acrylate leveling agent evenly, add pigment red, titanium dioxide and barium sulfate, disperse and stir for 20min, grind with a sand mill for 3- 4 times until the fineness is below 10um, add hexamethoxymethylmelamine resin, triethylamine, propylene glycol ether and defoamer to disperse and stir for 30 minutes, and adjust the viscosity of the dispersed product with water to obtain the water-based environmentally friendly metal coating of the present invention.

[0028] In addition, TPR-008 water-ba...

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Abstract

The invention provides a water metallic paint and a preparation method thereof. The paint mainly comprises the components of 30-60wt% of acrylic resin, 4-15wt% of amine resin used for paints, 10-40wt% of pigment, 3-10wt% of stuffing, 0.5-5wt% of lacquer solvent, 0.5-3wt% of addition agent and 20-50wt% of water. The components are weighted according to mixture ratio, mixed according to certain charging sequence, and then subjected to the working procedures of dispersing, grinding and the like, thus obtaining the water metallic paint. The paint takes water as a solvent, is added with a small amount of lacquer solvent, is environment-friendly, and has the main advantages of simple production technology, low cost, good levelability, high adhesive attraction, high luster, resistance to yellowing, high solid content, low viscosity, good heat resistance and capability of being used for a long time at the temperature of 180 DEG C.

Description

technical field [0001] The invention belongs to the technical field of chemical coatings, and more specifically relates to a water-based metal coating with excellent performance and a preparation method thereof. Background technique [0002] In order to enhance the weather resistance and corrosion resistance of metal products, prolong their service life and increase their aesthetics, surface treatment of metal materials is usually required. There are many kinds of metal surface treatment technologies, such as electroplating, chemical plating, coating technology and so on. The method of using coating technology to treat the metal surface has a long history. The most simple and effective method is to directly apply a suitable coating on the metal surface. After the solvent in the coating evaporates, a dense layer can be formed on the metal surface. protective film. [0003] At present, metal coating products are mainly solvent-based baking coatings, which can be divided into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/02
Inventor 邓光万陈志国梁贰杨小艳
Owner 中山创美涂料有限公司
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