Oily antirust primer and application thereof

Abstract

The invention discloses an oily antirust primer. The oily antirust primer is prepared from the following components in parts by weight: 40-50 parts of epoxy resin, 5-10 parts of alkylol amine modifiedamorphous silicon dioxide powder, 0.1-2 parts of a functional auxiliary agent, 10-20 parts of a pigment filler, 0.5-1 part of fumed silica, 0.5-2 parts of a silane coupling agent and 10-15 parts of adiluent, wherein the diluent is one or more selected from xylene, toluene and butyl acetate. The antirust component and pigment filler in the oily antirust primer are uniformly dispersed, a compact primer film with high adhesive force can be formed, and the impact strength and salt water resistance of the primer film are high.

Description

technical field

[0001] The invention relates to the technical field of antirust coatings, in particular to an oily antirust primer and its application. Background technique

[0002] Metal materials are the foundation of human material civilization. Metal corrosion has caused huge losses to human society. According to statistics, the amount of steel lost due to rust every year in the world accounts for a quarter of the annual output. Therefore, how to reduce the corrosion of metals, especially steel products, has become an important issue. At present, there are many methods to prevent rapid corrosion of steel products, the most effective and commonly used method is to coat the surface of steel products with an anti-corrosion coating to prevent the metal surface from direct contact with moisture and oxygen in the air; the anti-rust pigments play a physical role , Chemical anti-corrosion function.

[0003] Traditional red lead, lead powder, chromate and other anti-rust pigmen...

Examples

Embodiment 1

[0032] A kind of alcohol amine modified amorphous silicon dioxide powder, its preparation method comprises the following steps:

[0033] Add 5000 grams of 30wt% sulfuric acid solution in the reaction kettle, then add 20wt% water glass solution to adjust the pH value of the system to 1.5; the time for adding the water glass solution is 30 minutes; after stirring evenly, let it stand for 90 minutes, and the reaction temperature is 50°C ; After standing, adjust the pH value of the mixed solution to 8 with 10% sodium hydroxide solution, and simultaneously heat up to 90° C., and keep it for 30 minutes; adjust the pH value of the system to 3.5 with 10% sulfuric acid solution, and keep it for 20 minutes; The product was filtered and washed until the conductivity was less than 50 μS / cm. Before spray drying, 6-amino-1-hexanol with a weight ratio of 3% of silica was added, the outlet temperature of the spray drying was 110° C., and it was pulverized to 3 μm.

Embodiment 2

[0035] A kind of alcohol amine modified amorphous silicon dioxide powder, its preparation method comprises the following steps:

[0036] Add 5000 grams of 50wt% sulfuric acid solution in the reaction kettle, then add 5wt% water glass solution to adjust the pH value of the system to 4; the time for adding the water glass solution is 90 minutes; after stirring evenly, let it stand for 120 minutes, and the reaction temperature is 60°C ; After standing, adjust the pH value of the mixed solution to 7 with 10% sodium hydroxide solution, and simultaneously heat up to 70° C., and keep it for 10 minutes; adjust the pH value of the system to 4 with 10% sulfuric acid solution, and keep it for 20 minutes; The product is filtered and washed until the conductivity is less than 50 μS / cm. Before spray drying, ethanolamine with a weight ratio of 5% of silica is added, and the outlet temperature of the spray drying is 110° C., and it is pulverized to 4 μm.

Embodiment 3

[0041] An oily antirust primer, made of the following components by weight: 45 parts of epoxy resin, 7 parts of alcohol amine modified amorphous silica powder obtained in Example 1, 0.5 part of 5500 defoamer, 0.6 parts of Digo leveling agent B1484, 0.4 parts of BYK wetting agent Byk3400, 7 parts of ZnO, 8 parts of barite powder, 0.7 parts of fumed silica, 1 part of silane coupling agent kh-560 and 13 parts of diluent, wherein the diluent is Xylene and butyl acetate are composed in a volume ratio of 2:1.

technical field

[0001] The invention relates to the technical field of antirust coatings, in particular to an oily antirust primer and its application. Background technique

[0002] Metal materials are the foundation of human material civilization. Metal corrosion has caused huge losses to human society. According to statistics, the amount of steel lost due to rust every year in the world accounts for a quarter of the annual output. Therefore, how to reduce the corrosion of metals, especially steel products, has become an important issue. At present, there are many methods to prevent rapid corrosion of steel products, the most effective and commonly used method is to coat the surface of steel products with an anti-corrosion coating to prevent the metal surface from direct contact with moisture and oxygen in the air; the anti-rust pigments play a physical role , Chemical anti-corrosion function.

[0003] Traditional red lead, lead powder, chromate and other anti-rust pigmen...

Examples

Embodiment 1

[0032] A kind of alcohol amine modified amorphous silicon dioxide powder, its preparation method comprises the following steps:

[0033] Add 5000 grams of 30wt% sulfuric acid solution in the reaction kettle, then add 20wt% water glass solution to adjust the pH value of the system to 1.5; the time for adding the water glass solution is 30 minutes; after stirring evenly, let it stand for 90 minutes, and the reaction temperature is 50°C ; After standing, adjust the pH value of the mixed solution to 8 with 10% sodium hydroxide solution, and simultaneously heat up to 90° C., and keep it for 30 minutes; adjust the pH value of the system to 3.5 with 10% sulfuric acid solution, and keep it for 20 minutes; The product was filtered and washed until the conductivity was less than 50 μS / cm. Before spray drying, 6-amino-1-hexanol with a weight ratio of 3% of silica was added, the outlet temperature of the spray drying was 110° C., and it was pulverized to 3 μm.

Embodiment 2

[0035] A kind of alcohol amine modified amorphous silicon dioxide powder, its preparation method comprises the following steps:

[0036] Add 5000 grams of 50wt% sulfuric acid solution in the reaction kettle, then add 5wt% water glass solution to adjust the pH value of the system to 4; the time for adding the water glass solution is 90 minutes; after stirring evenly, let it stand for 120 minutes, and the reaction temperature is 60°C ; After standing, adjust the pH value of the mixed solution to 7 with 10% sodium hydroxide solution, and simultaneously heat up to 70° C., and keep it for 10 minutes; adjust the pH value of the system to 4 with 10% sulfuric acid solution, and keep it for 20 minutes; The product is filtered and washed until the conductivity is less than 50 μS / cm. Before spray drying, ethanolamine with a weight ratio of 5% of silica is added, and the outlet temperature of the spray drying is 110° C., and it is pulverized to 4 μm.

Embodiment 3

[0041] An oily antirust primer, made of the following components by weight: 45 parts of epoxy resin, 7 parts of alcohol amine modified amorphous silica powder obtained in Example 1, 0.5 part of 5500 defoamer, 0.6 parts of Digo leveling agent B1484, 0.4 parts of BYK wetting agent Byk3400, 7 parts of ZnO, 8 parts of barite powder, 0.7 parts of fumed silica, 1 part of silane coupling agent kh-560 and 13 parts of diluent, wherein the diluent is Xylene and butyl acetate are composed in a volume ratio of 2:1.

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