Silane treatment technique before electrostatic powder spraying of metal

A technology of electrostatic powder and process method, which is applied in the direction of metal material coating process, pretreatment surface, coating, etc., can solve the problems such as the method of silane treatment and the method of steel treatment that have not been mentioned, and save equipment investment , Save production space and improve production efficiency

Inactive Publication Date: 2008-12-10
武汉材保表面新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Chinese patent ZL02153200.1 provides a non-chromium surface treatment method for metals, and mentions the silane pretreatment process, but the patent does not mention the method of using silane pretreatment technology to treat steel, and does not propose electrostatic powder spraying Pre-silane treatment method
[0007] The protective treatment method of the aqueous mixture of vinylsilane and bissilylaminosilane provided in Chinese patent ZL00810014 to the metal surface and the method of using silane for metal anticorrosion provided in Chinese patent ZL98801638 also have no electrostatic powder spraying process

Method used

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  • Silane treatment technique before electrostatic powder spraying of metal
  • Silane treatment technique before electrostatic powder spraying of metal
  • Silane treatment technique before electrostatic powder spraying of metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Take 700g of deionized water, take 4g of acetic acid, 40g of ethanol, add to deionized water, fully stir and mix evenly; take 10g of vinyltriethoxysilane, add to deionized water, fully stir and mix; take 10g of aminopropyl triethyl Add oxysilane into water, stir well; take 5g of propyltriethoxysilane isocyanate, add it into water, stir well; add water to 1000g. Use the composite treatment liquid to treat the surface of iron parts, zinc parts and aluminum parts, which can be dipped, sprayed and rolled. The color of the silane film is uniform, and the coating adhesion is good after electrostatic powder spraying.

Embodiment 2

[0048] Take 700g of deionized water, take 8g of acetic acid, 60g of ethanol, add them to deionized water, stir and mix well; take 5g of propyltriethoxysilane, add it to water, stir well; take 20g of vinyltriethoxysilane , add to deionized water, fully stir and mix; take 15g of aminopropyltriethoxysilane, add to water, fully stir evenly; take 10g of isocyanate propyltriethoxysilane, add to water, fully stir evenly; 1000g. Use the composite treatment liquid to treat the surface of iron parts, zinc parts and aluminum parts, which can be dipped, sprayed and rolled. The color of the silane film is uniform, and the coating adhesion is good after electrostatic powder spraying.

Embodiment 3

[0050] Take 700g of deionized water, take 12g of acetic acid, 80g of ethanol, add them to deionized water, stir and mix well; take 10g of propyltriethoxysilane, add it to water, stir well; take 30g of vinyltriethoxysilane , add to deionized water, fully stir and mix; take 20g of aminopropyltriethoxysilane, add to water, fully stir evenly; take 15g of isocyanate propyltriethoxysilane, add to water, fully stir evenly; 1000g. Use the composite treatment liquid to treat the surface of iron parts, zinc parts and aluminum parts, which can be dipped, sprayed and rolled. The color of the silane film is uniform, and the coating adhesion is good after electrostatic powder spraying.

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Abstract

The invention provides a silane treating process method before coating metal electrostatic powder, which can be particularly applied to the metal electrostatic powder coating industry. The invention also provides an environment-friendly, energy-saving and high-efficient silane agent. The weight proportion of the main components of the agent is as follows: vinyl triethoxy silane 1% to 3%, 3-aminopropyl triethoxysilane 1% to 2%, propyl triethoxy silane 0% to 1%, isocyan-acid propyl triethoxy silane 0.5% to 1.5%, ethanol 4% to 8%, and acetic acid 0.4% to 1.2%, and the rest being deionized water. The treatment method can save energy, can be used without heating, does not contain heavy metal and phosphorus which are harmful to the environment, does not produce sediment during the treatment process with stable groove liquid, can be used continuously through filling, can simultaneously treat a plurality of substrates such as iron pieces, galvanized parts, aluminum parts and aluminum alloys, and can obviously improve the adhesion between the powder coatings and the metal substrates.

Description

Background of the invention [0001] The invention relates to a surface treatment process before metal electrostatic powder spraying, especially a method containing acetic acid, vinyltriethoxysilane, propyltriethoxysilane, aminopropyltriethoxysilane, The silane solution of isocyanate propyltriethoxysilane, ethanol and deionized water, after the metal is treated with the silane solution, electrostatic spraying is an environmentally friendly coating technology. [0002] Related Technical Notes [0003] Electrostatic spraying uses the object to be coated as the anode, which is generally grounded; the paint atomization mechanism is used as the cathode, and is connected to a negative high voltage power supply, thus forming a high-voltage electrostatic field at the two poles. Due to the corona discharge at the cathode, the sprayed powder medium can be charged and further atomized. The charged powder medium is subjected to the force of the electric field, and flows directionally alon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/06B05D3/00B05D7/24C23C22/48
CPCC23C2222/20
Inventor 荣光李新立李安忠万军叶法军米德伟张天鹏刘海峰韩琳王子建许朝玉刘纪运付文龙霍冬枝叶蕾殷雄智王群张凤英谭伍永霍莹郑丽红孙少朋李小丽周振芳
Owner 武汉材保表面新材料有限公司
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