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Modified polybutadiene anticorrosion paint for steel plate

A technology of polybutadiene and anti-corrosion coatings, which is applied in coatings, devices for coating liquids on surfaces, etc. It can solve the problems of basic resin performance limitations, difficulty in upgrading and replacement, etc., and achieve low cost and high and low temperature resistance Excellent, excellent high and low temperature resistance effect

Inactive Publication Date: 2007-08-08
王维
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These studies are effective in improving the performance of the product, but due to the limitation of the performance of the base resin, it is difficult to achieve the purpose of upgrading

Method used

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  • Modified polybutadiene anticorrosion paint for steel plate
  • Modified polybutadiene anticorrosion paint for steel plate
  • Modified polybutadiene anticorrosion paint for steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In a four-necked glass reaction flask with a volume of 3 liters, add 1,000 g of 1,2-low molecular weight polybutadiene, with a number average molecular weight of 1030, a 1,2-structure of 72%, and a viscosity of 1,200 cp at 20°C. Add 300g of xylene, 165g of maleic anhydride, 2g of N-phenyl-N-isopropyl-p-phenylenediamine, pass through dry nitrogen, start stirring, and slowly heat up the reactant to 180°C, react for 9 hours, at 1, 2-Reaction between low molecular weight polybutadiene and maleic anhydride. After the reaction, the temperature is lowered to 150°C. Distillation under reduced pressure removes xylene and unreacted maleic anhydride. The resulting product has a viscosity of 38,000 cp (30°C). The acid value was 82.5 mgKOH / g.

[0048] Take 300 g of the above-mentioned reactant, place it in a four-necked glass reaction flask with a volume of 1 liter, add 1 g of 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexyne-3, 0.3 g of 1,4-bis(2-benzoxazolyl)naphthalene, add 301g xyle...

Embodiment 2

[0056] In a four-necked glass reaction flask with a volume of 1 liter, add the maleic anhydride polybutadiene prepared in 100 g of Example 1, 200 g of 1,2-low molecular weight polybutadiene with a number average molecular weight of 1030, add 2 g tert-butyl peroxybenzoate, 0.1g of 4,4'-bis(2-disulfonate sodium styryl)biphenyl, 302g of xylene, under the protection of nitrogen, slowly raise the temperature to 80°C, and stir for 10 hours , to make a solid content of 50%, a varnish with a viscosity of 160cp (20°C).

[0057] Take 300g of the above-mentioned varnish, add 75g of titanium dioxide, mix 125g of xylene, grind in a small sand mill to a particle size of ≤30 μm, and make a color paint with a solid content of 45% and a viscosity of 70cp (20°C).

[0058] Dip the cleaned 0.2mm thick tinplate sheet into varnish and color paint respectively, take it out, put it in an oven at 200°C and bake for 10 minutes, make samples of varnish and color paint, and test it. The test results are ...

Embodiment 3

[0064] In a glass reaction bottle with a volume of 1 liter, add 300 g of 1,2-low-molecular polybutadiene with a number average molecular weight of 1200, 3 g of benzoyl peroxide, and 303 g of cyclohexane, and slowly heat up to 80 °C under nitrogen protection. ℃, and reacted for 6 hours to prepare a varnish with a solid content of 50% and a viscosity of 85 cp (20 ℃).

[0065] Take 300g of the above-mentioned varnish, add 75g of titanium dioxide and 125g of cyclohexane, grind it in a small sand mill to a particle size of ≤30 μm, and make a color paint with a solid content of 45% and a viscosity of 55cp (20°C).

[0066] Dip the cleaned 0.2mm thick tinplate sheet into varnish and color paint respectively, take it out, and bake it in an oven at 220°C for 5 minutes to make samples of varnish and color paint for testing. The test results are as follows:

[0067] Sample Thickness / μm Hardness Adhesion Impact Strength / kg / cm Salt Spray Resistance / hour

[0068] Varnish 21 2H Level 2 ≥50 4...

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Abstract

The invention discloses an antiseptic paint of modified polybutadiene for colorful steel board, pipe and part, which comprises the following steps: adopting 30-80% modified polybutadiene or modified polybutadiene and liquid polybutadiene or liquid polybutadiene as raw material; adding 19-69% organic solvent and 0.01-20% adjuvant; reacting from normal temperature to 160 deg.c for 6-20h; making varnish; adding dye and fill in the varnish; fitting for vacuum aluminium-plating priming paint domain.

Description

technical field [0001] The invention relates to a paint applied to steel plates, in particular to a modified polybutadiene anticorrosion paint applied to colored steel plates, steel pipes and steel parts. Background technique [0002] In the 1930s, the United States developed the first color steel plate production line. From the 1950s to the 1990s, the United States, Japan and European countries further improved the coatings, production processes, and quality control of color steel plates, and the output was further increased. After the 1990s, the products developed in the direction of high quality and diversification. At present, the output of colored steel plates in the United States, Europe and Japan has reached an annual output of about 20 million tons. Before the 1980s in our country, it was mainly low-grade color steel plates, and the annual output was only tens of thousands of tons. From the 1980s to the early 1990s, Angang, Wuhan Iron and Steel, Baosteel, etc. succ...

Claims

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Application Information

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IPC IPC(8): C09D147/00B05D7/14
Inventor 王维
Owner 王维
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