Acroleic acid mixed powder coating

Abstract

The invention relates to an acrylic acid mixed powder coating, which is characterized in that the formula comprises the following components in pbw (part by weight): 25 to 40 portions of epoxy resin, 25 to 40 portions of acrylic acid resin, 0.5 to 2 portions of leveling agent, 30 to 35 portions of filler, 0.1 to 0.2 portion of system catalyst, and 0.1 to 2 portions of other additive. The acrylic acid mixed powder coating has the advantages of lower costs, simple preparation and production, no need for curing agent, better hardness, excellent chemical and pollution resistance, long outdoor endurance, and broad application prospects.

Description

technical field

[0001] The invention relates to an acrylic mixed type powder coating. Background technique

[0002] Typical powder coatings are mostly epoxy resin-polyester resin systems. Among them, the carboxylic acid functionality of the polyester resin is about 3 to 4, the hardness is not high, and due to the large amount of ester groups contained in the polyester, it is susceptible to Effect of hydrolysis reactions of common pollutants. Moreover, the epoxy resin-polyester resin system has a certain content of aromatic components, which affects its anti-yellowing and anti-loss properties when exposed outdoors. In addition, isocyanate curing agents need to be added to the existing acrylic mixed powder coatings for curing, but isocyanate substances are highly toxic and do not meet the current environmental protection requirements. Contents of the invention

[0003] The object of the present invention is to overcome above-mentioned defect, provide a kind of acrylic hybr...

Examples

Embodiment Construction

[0010] The present invention is further illustrated below by way of examples.

[0011] Accurately weigh the material according to the formula composition of the embodiment in Table 1, place it in a high-speed mixer and mix for 10-12 minutes; extrude the material with an extruder at a temperature of 100-115 °C after mixing; crush the extruded material into an average Powder particles with a particle size of 35-45 microns; the powder particles are sieved with a 140-mesh sieve and packaged as a finished product.

[0012] The formula of acrylic hybrid powder coating is shown in Table 1:

[0013] The formula (parts by weight) of the acrylic acid hybrid powder coating of table 1

[0014]

[0015] The acrylic hybrid powder coating obtained according to the above examples is sprayed with an electrostatic spray gun to a thickness of 50-70 μm, and cured in an electric oven at 190° C. for 25 minutes. Perform a performance test on the coating. Its main coating properties are:

[00...

technical field

[0001] The invention relates to an acrylic mixed type powder coating. Background technique

[0002] Typical powder coatings are mostly epoxy resin-polyester resin systems. Among them, the carboxylic acid functionality of the polyester resin is about 3 to 4, the hardness is not high, and due to the large amount of ester groups contained in the polyester, it is susceptible to Effect of hydrolysis reactions of common pollutants. Moreover, the epoxy resin-polyester resin system has a certain content of aromatic components, which affects its anti-yellowing and anti-loss properties when exposed outdoors. In addition, isocyanate curing agents need to be added to the existing acrylic mixed powder coatings for curing, but isocyanate substances are highly toxic and do not meet the current environmental protection requirements. Contents of the invention

[0003] The object of the present invention is to overcome above-mentioned defect, provide a kind of acrylic hybr...

Examples

Embodiment Construction

[0010] The present invention is further illustrated below by way of examples.

[0011] Accurately weigh the material according to the formula composition of the embodiment in Table 1, place it in a high-speed mixer and mix for 10-12 minutes; extrude the material with an extruder at a temperature of 100-115 °C after mixing; crush the extruded material into an average Powder particles with a particle size of 35-45 microns; the powder particles are sieved with a 140-mesh sieve and packaged as a finished product.

[0012] The formula of acrylic hybrid powder coating is shown in Table 1:

[0013] The formula (parts by weight) of the acrylic acid hybrid powder coating of table 1

[0014]

[0015] The acrylic hybrid powder coating obtained according to the above examples is sprayed with an electrostatic spray gun to a thickness of 50-70 μm, and cured in an electric oven at 190° C. for 25 minutes. Perform a performance test on the coating. Its main coating properties are:

[00...

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