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Powder coating

A powder coating and zinc powder technology, applied in powder coatings, polyester coatings, coatings, etc., can solve the problems of easy cracking and falling off, low hardness, affecting the use and appearance of powder coatings, and achieve low cost and high hardness. High, maintain the effect of protective performance and appearance effect

Inactive Publication Date: 2017-12-05
RUGAO CITY LEHENG CHEM COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the improvement of living conditions, architectural coatings have become an essential material for indoor and outdoor decoration. At present, the widely used imitation porcelain coatings are mainly made of polyvinyl alcohol, cornstarch cellulose, and polypropylene. Made of high quality calcium carbonate, it is white and beautiful when painted indoors and outdoors, but it has the disadvantages of low hardness and easy cracking and falling off
In recent years, during the application of powder coatings, especially outdoor powder coatings, due to the erratic outdoor climate and high humidity, in hot and humid environments, powder coatings tend to absorb moisture and form white spots on the surface, which affects the use of powder coatings. and appearance performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A powder coating, in parts by weight, its components are: 70 parts of magnesium carbonate, 4.5 parts of mica powder, 3.5 parts of cellulose, 4 parts of fluorescent powder, 4.5 parts of porcelain calcium, 7.5 parts of bentonite, 6 parts of rubber powder 70 parts of polyester resin, 22.5 parts of curing agent, 37.5 parts of zinc powder, 10 parts of antioxidant, 5 parts of benzoin, 3 parts of brightening agent.

[0015] Zinc powder is titanium dioxide.

[0016] A kind of processing method of powder coating, concrete method is as follows:

[0017] (1) All materials are weighed according to the proportion, after mixing;

[0018] (2) Extruded in a twin-screw extruder at about 120-135°C;

[0019] (3) The extruded tablet is crushed and passed through a 120-200 mesh sieve.

Embodiment 2

[0021] A powder coating, in parts by weight, its components are: 60 parts of magnesium carbonate, 4 parts of mica powder, 2 parts of cellulose, 3 parts of fluorescent powder, 4 parts of porcelain calcium, 5 parts of bentonite, 2 parts of rubber powder ; 60 parts of polyester resin, 20 parts of curing agent, 35 parts of zinc powder, 8-12 parts of antioxidant, 4 parts of benzoin, 2 parts of brightening agent.

[0022] A kind of processing method of powder coating, concrete method is as follows:

[0023] (1) All materials are weighed according to the proportion, after mixing;

[0024] (2) Extruded in a twin-screw extruder at about 120-135°C;

[0025] (3) The extruded tablet is crushed and passed through a 120-200 mesh sieve.

[0026] Zinc powder is barium sulfate.

Embodiment 3

[0028] A powder coating, in parts by weight, its components are: 80 parts of magnesium carbonate, 5 parts of mica powder, 5 parts of cellulose, 5 parts of fluorescent powder, 5 parts of porcelain calcium, 10 parts of bentonite, and 10 parts of rubber powder ; 80 parts of polyester resin, 25 parts of curing agent, 40 parts of zinc powder, 12 parts of antioxidant, 6 parts of benzoin, 4 parts of brightening agent.

[0029] A kind of processing method of powder coating, concrete method is as follows:

[0030] (1) All materials are weighed according to the proportion, after mixing;

[0031] (2) Extruded in a twin-screw extruder at about 120-135°C;

[0032] (3) The extruded tablet is crushed and passed through a 120-200 mesh sieve.

[0033] The zinc powder is selected from two mixtures of barium sulfate and titanium dioxide.

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Abstract

The invention relates to a powder coating. The powder coating comprises, by weight, 60 to 80 parts of magnesium carbonate, 4 to 5 parts of mica powder, 2 to 5 parts of cellulose, 3 to 5 parts of phosphor powder, 4 to 5 parts of vitreous calcium, 5 to 10 parts of bentonite, 2 to 10 parts of glue powder, 60 to 80 parts of polyester resin, 20 to 25 parts of a curing agent, 35 to 40 parts of zinc powder, 8 to 12 parts of an antioxidant, 4 to 6 parts of benzoin and 2 to 4 parts of a brightener. A preparation method of the powder coating comprises weighing the above materials according to a ratio, uniformly mixing the materials through a twin-screw extruder, extruding the materials at a temperature of about 120 to 135 DEG C, crushing the extruded sheets and screening the powder by a sieve of 120 to 200 meshes. The powder coating has the advantages of high hardness, wipe resistance, no shedding and low cost. The wall coated with the powder coating through a brush forms a bright and clean surface like to porcelain. After high temperature baking curing, the powder coating is formed and has significant whitening resistance. The powder coating keeps protection performances and appearance of a base.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a powder coating. Background technique [0002] With the improvement of living conditions, architectural coatings have become an essential material for indoor and outdoor decoration. At present, the widely used imitation porcelain coatings are mainly made of polyvinyl alcohol, cornstarch cellulose, and polypropylene. Made of high quality calcium carbonate, it is white and beautiful when painted indoors and outdoors, but it has the disadvantages of low hardness and easy cracking and falling off. In recent years, during the application of powder coatings, especially outdoor powder coatings, due to the erratic outdoor climate and high humidity, in hot and humid environments, powder coatings tend to absorb moisture and form white spots on the surface, which affects the use of powder coatings. and appearance performance. To improve the whitening resistance of the powder coating, it is necess...

Claims

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Application Information

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IPC IPC(8): C04B26/18C09D167/00C09D5/03
CPCC04B26/18C04B2111/00482C09D5/03C09D167/00C08L1/02C08K13/02C08K3/26C08K3/34C08K3/346C08K3/08C08K5/07C04B22/10C04B14/20C04B24/383C04B14/36C04B14/104C04B18/22C04B22/04C04B2103/0068C04B2103/608
Inventor 唐正华
Owner RUGAO CITY LEHENG CHEM COMPANY
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