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Metal surface treating agent

A technology of metal surface treatment and metal elements, which is applied in the direction of metal material coating technology, etc., can solve the problems of coating film adhesion gap and corrosion resistance difference, and achieve the effect of improving coating film adhesion and corrosion resistance

Inactive Publication Date: 2014-02-26
宁波英科特精工机械股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, all chromate-free metal surface treatments or phosphate metal surface treatments in the prior art still cannot compare with the effect of using chromate or phosphate metal surface treatments, and there is also a difference in corrosion resistance, and the subsequent There is also a gap in the coating film adhesion

Method used

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Examples

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Embodiment 1

[0030] A metal surface treatment agent consisting of titanium fluoride, zirconium nitrate, zirconium fluoride, aminosilane, 1,2-bis(triethoxysilyl)ethane and bis(triethoxysilyl)hexane alkane composition; titanium fluoride, zirconium nitrate and zirconium fluoride account for 110-140ppm of the total treatment agent in terms of metal elements, wherein the ratio of titanium fluoride to zirconium nitrate and zirconium fluoride metal element atoms is 1:3, The metal element atom ratio of zirconium nitrate and zirconium fluoride is 2:5; aminosilane and 1,2-bis(triethoxysilyl)ethane and bis(triethoxysilyl)hexane The molar ratio is 17:3, wherein, the molar ratio of 1,2-bis(triethoxysilyl)ethane and bis(triethoxysilyl)hexane is 1:1.

Embodiment 2

[0032] A metal surface treatment agent consisting of titanium fluoride, zirconium nitrate, zirconium fluoride, aminosilane, 1,2-bis(triethoxysilyl)ethane and bis(triethoxysilyl)hexane Composition of alkane; titanium fluoride, zirconium nitrate and zirconium fluoride account for 550-650ppm of the total treatment agent in terms of metal elements, wherein the ratio of titanium fluoride to zirconium nitrate and zirconium fluoride metal element atoms is 1:1, The metal element atom ratio of zirconium nitrate and zirconium fluoride is 2:5; aminosilane and 1,2-bis(triethoxysilyl)ethane and bis(triethoxysilyl)hexane The molar ratio is 9:1, and the molar ratio of 1,2-bis(triethoxysilyl)ethane and bis(triethoxysilyl)hexane is 1:1.

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PUM

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Abstract

The invention relates to a metal surface treating agent. The metal surface treating agent comprises titanium fluoride, zirconium nitrate, zirconium fluoride, aminosilane, 1,2-bis(triethoxysilyl)ethane and bis(triethoxysilyl)hexane. The titanium fluoride, the zirconium nitrate and the zirconium fluoride account for 110-140 ppm or 550-650 ppm of the total amount of the agent based on conversion to metal elements, wherein the metal element atom ratio of the titanium fluoride to the sum of the zirconium nitrate and the zirconium fluoride is 1:1-1:3; and the metal element atom ratio of the zirconium nitrate to the zirconium fluoride is 2:5. The molar ratio of the aminosilane to the sum of the 1,2-bis(triethoxysilyl)ethane and the bis(triethoxysilyl)hexane is 17:3-9:1, wherein the molar ratio of the 1,2-bis(triethoxysilyl)ethane to the bis(triethoxysilyl)hexane is 1:1.

Description

technical field [0001] The invention belongs to the field of metal surface treatment, and specifically refers to a treatment agent for metal surface treatment. Background technique [0002] To improve the corrosion resistance of metal surfaces, metal surfaces are often treated with chromates or treated with phosphates. However, the waste water in the metal surface treatment process using chromate or phosphate has serious damage to the environment and the health of workers. With the increasing awareness of environmental protection in the world, the use of chromate or phosphate is now subject to strict restrictions. [0003] Although the harm to workers is relatively small in the process of metal surface treatment with phosphate, the problem of rich phosphating in the subsequent wastewater is serious, and the use of chromium-containing salts is inevitable in the process of using phosphate. Therefore, now Many countries have banned the use of chromates or phosphates as metal ...

Claims

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Application Information

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IPC IPC(8): C23C22/34C23C22/36
CPCC23C2222/20
Inventor 应兴隆
Owner 宁波英科特精工机械股份有限公司
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