CN111909599A - A kind of preparation method of low temperature resistant imitation copper door paint - Google Patents

Abstract

The invention discloses a preparation method of a low-temperature-resistant imitation copper door coating, which comprises the following steps: adding epoxy resin and carboxyl-terminated saturated polyester resin into a stirring cylinder, and uniformly stirring at a low speed; adding ethyl acetate and petroleum asphalt under the stirring condition of 350-450 rpm; adding the flatting agent and the glycerol under the stirring condition of 600 plus 800rpm and uniformly dispersing; adding iron oxide red and copper fine powder into a cylinder for color matching under the stirring conditions of 350-450 rpm; adding the rest raw materials, and uniformly stirring under the stirring condition of 1200-1500 rpm; grinding, sieving with 250 mesh sieve, and packaging. According to the low-temperature-resistant imitation copper door coating, the low-temperature-resistant glycerol and the organic bentonite with an interlayer structure are added, so that the low-temperature resistance of the coating can be remarkably improved, and cracking is prevented; meanwhile, the color matching effect is better by combining the iron oxide red, the liquid petroleum asphalt and the copper fine powder.

Description

A kind of preparation method of low temperature resistant imitation copper door paint

technical field

The invention relates to the technical field of imitation copper paint, in particular to a preparation method of a low temperature resistant imitation copper door paint.

Background technique

The imitation copper door is made of electrolytic plate, and the surface is sprayed with paint similar to the copper door to make it look similar to the copper door, so it is called the imitation copper door. In order to achieve the effect of being beautiful and durable, most of the domestic anti-theft doors are made of imitation copper doors, and most of them are pickled and phosphated before painting. Plates, forgings and cold plates are welded, which causes certain difficulties in spraying, so the primer treatment of degreasing and rust removal is required in the early stage. First: primer, at present, most companies use electrostatic powder spraying as a primer. Second: topcoat, which is basically red copper, red copper, and brass. This process determines the degree of copper imitation of this product, and the usual paint is used. The topcoat used in this sequence is also a paint product, which is neither environmentally friendly in the production process of the product, nor is the effect of the imitation copper product obtained. Third: black plating. This process directly causes the differences in the products of various companies, so this process is the most important, but at present, this process uses black-plated paint, which is neither environmentally friendly nor affects the effect of imitation copper, and is not conducive to the daily maintenance of imitation copper doors. Finally: cover light, generally matt and high light, most of them are matte at present.

In order to improve the application effect of the imitation copper door paint and expand its application scope, the invention provides a preparation method of the imitation copper door paint.

SUMMARY OF THE INVENTION

Based on the technical problems existing in the background art, the present invention proposes a preparation method of a low temperature resistant imitation copper door paint.

The technical scheme of the present invention is as follows:

A preparation method of a low temperature resistant imitation copper door paint, comprising the following steps:

A Add epoxy resin and carboxyl-terminated saturated polyester resin into the mixing tank, and stir evenly at low speed;

B adds ethyl acetate and petroleum pitch under the stirring condition of 350-450rpm;

C Add leveling agent and glycerol under stirring condition of 600-800rpm and disperse evenly;

D Add iron oxide red and copper powder to the tank under stirring conditions of 350-450rpm for coloring;

E Add the remaining raw materials, stir evenly under the stirring condition of 1200-1500rpm;

F, after grinding, pass through a 250-mesh sieve, and package it.

Preferably, the petroleum asphalt is liquid petroleum asphalt with 0.1mm penetration (25° C.) of 110-130.

Preferably, the leveling agent is an acrylate leveling agent.

Preferably, the low temperature resistant imitation copper door coating is composed of the following components by weight: 35-40 parts of epoxy resin, 35-40 parts of carboxyl-terminated saturated polyester resin, 1-1.2 parts of leveling agent, ethyl acetate 10-15 parts of ester, 3-5 parts of petroleum asphalt, 5-10 parts of iron oxide red, 1.2-1.5 parts of copper and gold powder, 20-30 parts of glycerin, and 18-25 parts of organic bentonite.

The advantages of the present invention are: the preparation method of the low-temperature resistant imitation copper door coating of the present invention comprises the following steps: adding epoxy resin and carboxyl-terminated saturated polyester resin into a stirring cylinder, stirring evenly at low speed; stirring at 350-450 rpm Add ethyl acetate and petroleum asphalt under the condition of stirring; add leveling agent and glycerin under the stirring condition of 600-800rpm and disperse evenly; under the stirring condition of 350-450rpm, add the red iron oxide and copper powder into the tank to color; Add the remaining raw materials, stir evenly under the stirring condition of 1200-1500rpm; after grinding, pass through a 250-mesh sieve, and package it. The low temperature resistant imitation copper door paint of the present invention can significantly improve the low temperature resistance performance of the paint and prevent cracking by adding low temperature resistant glycerin and organic bentonite with an interlayer structure on the basis of the traditional imitation copper door paint; By combining iron oxide red, liquid petroleum pitch and copper concentrate, the toning effect is better.

Detailed ways

Example 1

A preparation method of a low temperature resistant imitation copper door paint, comprising the following steps:

A Add epoxy resin and carboxyl-terminated saturated polyester resin into the mixing tank, and stir evenly at low speed;

B adds ethyl acetate and petroleum bitumen under the stirring condition of 420rpm;

C add leveling agent and glycerol under stirring condition at 750rpm and disperse uniformly;

D. Add iron oxide red and copper powder into the tank under the stirring condition of 380rpm for color mixing;

E Add the remaining raw materials, stir evenly under the stirring condition of 1250rpm;

F, after grinding, pass through a 250-mesh sieve, and package it.

The petroleum asphalt is liquid petroleum asphalt with 0.1mm penetration (25° C.) of 110-130.

The leveling agent is an acrylate leveling agent.

The low temperature resistant imitation copper door coating is composed of the following components by weight: 38 parts of epoxy resin, 36 parts of carboxyl-terminated saturated polyester resin, 1.1 parts of leveling agent, 12 parts of ethyl acetate, 3.5 parts of petroleum asphalt, 58 parts of iron oxide red, 1.3 parts of copper and gold powder, 28 parts of glycerol, and 22 parts of organic bentonite.

The paint is applied to the surface of the steel door, and when dry, the surface of the steel door has a bright brass color.

Example 2

A preparation method of a low temperature resistant imitation copper door paint, comprising the following steps:

A Add epoxy resin and carboxyl-terminated saturated polyester resin into the mixing tank, and stir evenly at low speed;

B adds ethyl acetate and petroleum bitumen under the stirring condition of 450rpm;

C Add leveling agent and glycerol under stirring at 600rpm and disperse uniformly;

D Add iron oxide red and copper powder to the tank under stirring at 450rpm for color mixing;

E Add the remaining raw materials, stir evenly under the stirring condition of 1200rpm;

F, after grinding, pass through a 250-mesh sieve, and package it.

The petroleum asphalt is liquid petroleum asphalt with 0.1mm penetration (25° C.) of 110-130.

The leveling agent is an acrylate leveling agent.

The described low temperature resistant imitation copper door paint is composed of the following components by weight: 40 parts of epoxy resin, 35 parts of carboxyl-terminated saturated polyester resin, 1.2 parts of leveling agent, 15 parts of ethyl acetate, 5 parts of petroleum asphalt, 5 parts of iron oxide red, 1.5 parts of copper and gold powder, 20 parts of glycerol, and 25 parts of organic bentonite.

The paint is applied to the surface of the steel door, and when dry, the surface of the steel door has a bright brass color.

Example 3

A preparation method of a low temperature resistant imitation copper door paint, comprising the following steps:

A Add epoxy resin and carboxyl-terminated saturated polyester resin into the mixing tank, and stir evenly at low speed;

B adds ethyl acetate and petroleum bitumen under the stirring condition of 350rpm;

C add leveling agent and glycerol and disperse uniformly under the stirring condition of 800rpm;

D. Add iron oxide red and copper powder into the tank under the stirring condition of 350rpm for color mixing;

E Add the remaining raw materials and stir evenly under the stirring condition of 1500rpm;

F, after grinding, pass through a 250-mesh sieve, and package it.

The petroleum asphalt is liquid petroleum asphalt with 0.1mm penetration (25° C.) of 110-130.

The leveling agent is an acrylate leveling agent.

The described low temperature resistant imitation copper door coating is composed of the following components by weight: 35 parts of epoxy resin, 40 parts of carboxyl-terminated saturated polyester resin, 1 part of leveling agent, 15 parts of ethyl acetate, 3 parts of petroleum asphalt, 10 parts of iron oxide red, 1.2 parts of copper and gold powder, 30 parts of glycerol, and 18 parts of organic bentonite.

The paint is applied to the surface of the steel door, and when dry, the surface of the steel door has a bright brass color.

Comparative Example 1

The petroleum pitch in Example 1 was removed, and the remaining proportions and preparation methods remained unchanged.

The paint is applied to the surface of the steel door, and after drying, the surface of the steel door has a bright reddish color.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (4)

1. The preparation method of the low-temperature-resistant imitation copper door coating is characterized by comprising the following steps of:

adding epoxy resin and carboxyl-terminated saturated polyester resin into a stirring cylinder, and uniformly stirring at a low speed;

b, adding ethyl acetate and petroleum asphalt under the stirring condition of 350-450 rpm;

c, adding the flatting agent and the glycerol under the stirring condition of 600-800rpm and uniformly dispersing;

d, adding the iron oxide red and the copper fine powder into a cylinder for color matching under the stirring conditions of 350-450 rpm;

e, adding the rest raw materials, and uniformly stirring under the stirring condition of 1200-1500 rpm;

and F, grinding, sieving with a 250-mesh sieve, and packaging.

2. The method for preparing the low temperature resistant imitation copper door coating of claim 1, wherein the petroleum asphalt is a liquid petroleum asphalt with a penetration (25 ℃) of 110-130 at 0.1 mm.

3. The method for preparing the low temperature resistant imitation copper door coating of claim 1, wherein the leveling agent is an acrylate leveling agent.

4. The preparation method of the low temperature resistant imitation copper door coating of claim 1, wherein the low temperature resistant imitation copper door coating comprises the following components in parts by weight: 35-40 parts of epoxy resin, 35-40 parts of carboxyl-terminated saturated polyester resin, 1-1.2 parts of a flatting agent, 10-15 parts of ethyl acetate, 3-5 parts of petroleum asphalt, 5-10 parts of iron oxide red, 1.2-1.5 parts of bronze powder, 20-30 parts of glycerol and 18-25 parts of organic bentonite.