Antirust coating, antirust method and application of antirust coating

A kind of anti-rust paint, paint technology, applied in the direction of anti-corrosion paint, polyester paint, polycarbonate paint, etc., can solve the problems such as poor effect

Inactive Publication Date: 2012-09-26
TIANCHANG JULONG TRAVEL PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not very effective when it is used as a rust inhibitor on metal surfaces such as zinc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A polyolefin resin and a polyurethane resin were mixed in pure water to obtain an aqueous resin concentration of 20 g / L. Then dissolve thiourea at 0.8g / L, and finally add water-dispersible silicon dioxide at 35g / L. Stir in a disperser for 30 minutes to disperse the mixture, then add nitrite, tri-n-butylamine and nitrilotriethanolamine at 1.2g / L, 5g / L, and 0.4g / L respectively, and add conventional amounts of γ- Aminopropyltrimethoxysilane was used as a coupling agent, and then the pH was adjusted to 8 to obtain an antirust coating. To evaluate the antirust ability of the substrate and the adhesion of the topcoat, the obtained antirust paint was applied to commercially available electrogalvanized steel and allowed to dry. Before performance testing, electroplated galvanized steel was degreased with an alkaline degreaser, washed with water, and dried.

Embodiment 2

[0053] Antirust paint was prepared in a similar manner to Example 1. Raw material selection uses 1,3-diethyl-2-thiourea to replace the thiourea used in Example 1 as the thiocarbonyl compound, and polycarbonate resin to replace the polyolefin resin and polyurethane used in Example 1 The resin is used as the water-based resin, and the γ-aminopropyltrimethoxysilane used in Example 1 is replaced by γ-glycidoxypropyltrimethoxysilane as the coupling agent. Finally, the pH of the paint was adjusted to 2.5.

[0054] The dosage of each raw material is as follows: water-based resin 55g / L; thiocarbonyl compound 53g / L; water-dispersible silica 428g / L; nitrite 30g / L; tri-n-butylamine 50g / L; Ethanolamine 16g / L.

[0055] It was then used in the anti-rust treatment of electroplated galvanized steel and similarly evaluated for its anti-rust ability and adhesion of the topcoat.

Embodiment 3

[0057] Antirust paint was prepared in a similar manner to Example 1. Raw material is selected to replace the thiourea used in Example 1 with thioformaldehyde as the thiocarbonyl compound, replace the polyolefin resin and polyurethane resin used in Example 1 with polycarbonate resin and acrylic resin as water-based resin, use N -(2-(vinyl benylamino)ethyl)-3-aminopropyltrimethoxysilane instead of the gamma-aminopropyltrimethoxysilane used in Example 1 as a coupling agent. The final pH of the coating was adjusted to 10.

[0058] The dosage of each raw material is as follows: water-based resin 156g / L; thiocarbonyl compound 5g / L; water-dispersible silica 68g / L; nitrite 20g / L; tri-n-butylamine 35g / L; Ethanolamine 11g / L.

[0059] It was then used in the anti-rust treatment of electroplated galvanized steel and similarly evaluated for its anti-rust ability and adhesion of the topcoat.

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PUM

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Abstract

The invention relates to an antirust coating, an antirust method and application of the antirust coating. The antirust coating comprises the following components: a compound with sulfo-carbonyl, water-dispersible silicon dioxide, nitrite, tri-n-butylamine and nitrilo-triethanolamine. The antirust method comprises the following steps of: applying the antirust coating on an object to be coated, and then heating the coated object by hot air to be dried; or heating the object to be coated, applying the antirust coating on the heated object, and drying the object by heat retained in the object. The antirust coating is suitable for being applied on zinc-plated steel or aluminum-plated steel or non-plated steel so as to perform antirust treatment on the zinc-plated steel or the aluminum-plated steel or the non-plated steel. The non-chrome antirust coating provided by the invention has the advantages of excellent storage stability, relatively low environmental toxicity and high antirust performance.

Description

technical field [0001] The present invention relates to a surface treatment composition and a surface treatment method for metal materials, metal-coated steel or uncoated steel, and provides a method for providing metal materials with sufficient corrosion resistance, storage stability High corrosion inhibitor. Background technique [0002] In salty environments such as seawater or high temperature / humidity environments, white rust stains will form on the surface of metal-plated steel, resulting in a significantly deteriorated appearance of the substrate surface or a reduction in rust resistance. [0003] In order to prevent the formation of this white rust, a chromate-based antirust treatment agent, such as the resin-based treatment agent disclosed in Japanese Patent Application Laid-Open No. 3-131370, has been applied. Water-dispersible chromium compound and water-dispersible silica in olefin-α,β-ethylenically unsaturated carboxylic acid copolymer resin dispersions. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D7/12C09D123/00C09D175/04C09D133/00C09D169/00C09D167/00B05D7/14B05D7/24B05D3/02
Inventor 管伟
Owner TIANCHANG JULONG TRAVEL PAINT
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