Basic lead chromate silicate antirust coating used for steel, and preparation method thereof

A lead silicate chromate and anti-rust coating technology, applied in anti-corrosion coatings, asphalt coatings, coatings, etc., can solve the problems of low coating viscosity, poor covering power, low adhesion, etc., and achieve smooth appearance and good humidity and heat resistance. , good water resistance

Inactive Publication Date: 2016-10-12
WUXI EPIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] This application aims at the technical problems of low viscosity, poor flexibility, low adhesion, slow drying and poor hiding power of existing coatings for steel surfaces, and provides a basic lead silicochromate antirust coating for steel and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 100 parts of basic lead silicate chromate, 6 parts of pottery clay, 1 part of calcium carbonate, 0.5 part of butanol, 10 parts of coal tar pitch, 8 parts of lanolin, 25 parts of castor oil, and 60 parts, 30 parts of acetone, 15 parts of dibutyl phthalate, 5 parts of perchlorethylene resin.

[0027] Put basic lead silicochromate, clay, calcium carbonate, butanol, coal tar pitch, lanolin and castor oil into a reaction kettle equipped with a stirrer and a thermometer, raise the temperature to 165°C, stir for 40 minutes, and the stirring speed is 350 rpm / minute.

[0028] Cool to 50-70°C, add the remaining raw materials, grind to a fineness of 25 μm in a grinder, filter and pack.

[0029] The appearance of the coating film is smooth, the viscosity is 70s, the surface is dry for 6 hours, and the hard work is 28 hours; the hiding power is 220g / cm 3 , has good adhesion to metal, and the coating film is hard; moisture-proof, rust-proof and water resistance are good, impac...

Embodiment 2

[0031] Weigh 100 parts of basic lead silicochromate, 10 parts of pottery clay, 5 parts of calcium carbonate, 4.5 parts of butanol, 30 parts of coal tar pitch, 12 parts of lanolin, 45 parts of castor oil, and 80 parts, 50 parts of acetone, 35 parts of dibutyl phthalate, 25 parts of perchlorethylene resin.

[0032] Put basic lead silicochromate, clay, calcium carbonate, butanol, coal tar pitch, lanolin and castor oil into a reaction kettle equipped with a stirrer and a thermometer, heat up to 185°C, stir for 60 minutes, and the stirring speed is 550 rpm / minute.

[0033] Cool to 70°C, add the remaining raw materials, grind to a fineness of 45 μm in a grinder, filter and pack.

[0034] The appearance of the coating film is smooth, the viscosity is 80s, the surface is dry for 5 hours, and the hard drying is 27 hours; the hiding power is 230g / cm 3 , has good adhesion to metal, and the coating film is hard; moisture-proof, rust-proof and water-resistant, impact resistance 65cm, sa...

Embodiment 3

[0036] Weigh 100 parts of basic lead silicate chromate, 7 parts of pottery clay, 2 parts of calcium carbonate, 1.5 parts of butanol, 15 parts of coal tar pitch, 9 parts of lanolin, 30 parts of castor oil, and 65 parts, 35 parts of acetone, 20 parts of dibutyl phthalate, 10 parts of perchlorethylene resin.

[0037] Put basic lead silicochromate, clay, calcium carbonate, butanol, coal tar pitch, lanolin and castor oil into a reaction kettle equipped with a stirrer and a thermometer, heat up to 185°C, stir for 60 minutes, and the stirring speed is 550 rpm / minute.

[0038] Cool to 70°C, add the remaining raw materials, grind to a fineness of 45 μm in a grinder, filter and pack.

[0039] The appearance of the coating film is smooth, the viscosity is 90s, the surface is dry in 4 hours, and the hard work is 26 hours; the hiding power is 240g / cm 3 , has good adhesion to metal, and the coating film is hard; moisture-proof, rust-proof and water resistance are good, impact resistance ...

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Abstract

The invention discloses a basic lead chromate silicate antirust coating used for steel, and a preparation method thereof. The preparation method comprises the following steps: weighing basic lead chromate silicate, potter's clay, calcium carbonate. Butanol, coal-tar asphalt, lanolin, castor oil, nitrocellulose lacquer thinner, acetone, dibutyl phthalate and perchlorovinyl resin. The preparation method comprises the following steps: stirring above raw materials, and grinding the stirred raw materials to obtain the coating. A film formed by the coating has flat and bright appearance, the viscosity is 70-110s, the surface drying time is 2-6h, and the hard drying time is 24-28h; the covering power is 220-260g/cm<3>, the film has good adhesion to metal, and the film is hard; the film has good moisture, rust and water resistance, the impact resistance is 60-80cnm, and the film has no foaming or shedding phenomenon after being immersed in 30DEG C water for 10-14d; and the flexibility is 1-3mm, and the film has good resistance to heat and humidity.

Description

technical field [0001] The invention relates to a paint for iron and steel surfaces, in particular to a basic lead silicochromate antirust paint for iron and steel and a preparation method thereof. Background technique [0002] Antirust coatings are coatings that protect metal surfaces from chemical or electrochemical corrosion of the atmosphere, sea water, etc. Coating anti-rust coatings on the metal surface can effectively prevent the direct invasion of various corrosive substances in the atmosphere, so as to maximize the extension of the service life of the metal. It can be divided into two categories: physical and chemical antirust paint. The former relies on the proper combination of calcium carbonate and paint to form a dense paint film to prevent the intrusion of corrosive substances, such as iron red, aluminum powder, graphite anti-rust paint, etc.; the latter relies on the chemical anti-rust effect of anti-rust calcium carbonate, Such as basic lead silicochromate,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D191/00C09D195/00C09D5/08C09D7/12
CPCC09D191/00C08L2201/08C08L2205/03C09D5/08C09D7/61C09D7/63C08L95/00C08L27/24C08K3/34C08K3/346C08K2003/265C08K5/05C08K5/12
Inventor 尤为
Owner WUXI EPIC TECH
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