Room-temperature zinc slag-free phosphating agent and production method

A phosphating agent, zinc-based technology, applied in the direction of metal material coating process, etc., can solve the problems affecting metal surface properties, poor compatibility and stability, poor corrosion resistance, etc., to reduce pollution, reduce impact, and improve resistance. corrosive effect

Inactive Publication Date: 2020-01-31
宁波际超新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the existing research, in order to promote the phosphating reaction in the phosphating agent, accelerators such as nitrite, chlorate or peroxide are usually selected to be added. On the one hand, these accelerators themselves are toxic and harmful substances, and a small amount of residues not only It af

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a zinc-based slag-free phosphating agent at room temperature. According to parts by weight, the components of the phosphating agent include: 18 parts of zinc oxide, 50 parts of nitric acid, 20 parts of phosphoric acid, 0.2 parts of sodium fluoroborate, nitric acid 0.7 parts of copper, 7 parts of ethylenediaminetetraacetic acid, 0.2 parts of surfactant, 0.08 parts of maleic acid acrylic acid copolymer, and 80 parts of water. Among them, the surfactant is a compound of OP-3 alkylphenol polyoxyethylene ether and lauryl amidopropyl amine oxide. The weight ratio of the two is 5:1. They were purchased from Jiangsu Haian Petrochemical Plant and Jinan Luying Chemical Co., Ltd. The maleic acid acrylic acid copolymer was purchased from Guangzhou Deli Chemical Co., Ltd.

Embodiment 2

[0043] This embodiment provides a zinc-based slag-free phosphating agent at room temperature. According to parts by weight, the components of the phosphating agent include: 22 parts of zinc oxide, 60 parts of nitric acid, 25 parts of phosphoric acid, 0.3 parts of sodium fluoroborate, nitric acid 0.9 parts of copper, 8 parts of ethylenediaminetetraacetic acid, 0.4 parts of surfactant, 0.1 part of maleic acid acrylic acid copolymer, and 110 parts of water. Among them, the surfactant is a compound of OP-3 alkylphenol polyoxyethylene ether and lauryl amidopropyl amine oxide. The weight ratio of the two is 5:1. They were purchased from Jiangsu Haian Petrochemical Plant and Jinan Luying Chemical Co., Ltd. The maleic acid acrylic acid copolymer was purchased from Guangzhou Deli Chemical Co., Ltd.

Embodiment 3

[0045] This embodiment provides a zinc-based slag-free phosphating agent at room temperature. According to parts by weight, the components of the phosphating agent include: 20 parts of zinc oxide, 55 parts of nitric acid, 23 parts of phosphoric acid, 0.25 parts of sodium fluoroborate, nitric acid 0.8 parts of copper, 7.5 parts of ethylenediaminetetraacetic acid, 0.3 parts of surfactant, 0.09 parts of maleic acid acrylic acid copolymer, and 100 parts of water. Among them, the surfactant is a compound of OP-3 alkylphenol polyoxyethylene ether and lauryl amidopropyl amine oxide. The weight ratio of the two is 5:1. They were purchased from Jiangsu Haian Petrochemical Plant and Jinan Luying Chemical Co., Ltd. The maleic acid acrylic acid copolymer was purchased from Guangzhou Deli Chemical Co., Ltd.

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PUM

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Abstract

The invention provides a room-temperature zinc slag-free phosphating agent and a production method. The phosphating agent comprises the components including, by weight, 15-25 parts of zinc oxide, 45-65 parts of nitric acid, 15-30 parts of phosphoric acid, 0.1-0.4 part of fluorochemical, 0.1-1.5 parts of an accelerant, 5-10 parts of a complexing agent, 0.1-0.5 part of a surfactant, 0.05-0.12 part of an additive and 70-120 parts of water, wherein the fluorochemical is preferably sodium fluoborite, the accelerant is preferably copper nitrate, the complexing agent is preferably ethylene diamine tetraacetic acid, and the surfactant is preferably a compound of a nonionic surfactant and an ampholytic surfactant. The phosphating agent provided by the invention does not use harmful substances suchas nickel-containing compounds, the product stability is uniform, and a generated phosphating film is uniform and compact.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a normal-temperature zinc-based slag-free phosphating agent and a production method. Background technique [0002] The surface of the metal needs to be converted before spraying to form a conversion film. The conversion film has porosity and a certain roughness, which can allow the paint to penetrate into the pores and effectively increase the adhesion of the sprayed coating on the metal surface. , thereby improving the corrosion resistance of the metal and increasing the service life. At present, phosphating technology is often used to chemically treat the surface of metal workpieces to form a phosphate conversion film with a certain thickness on the surface, that is, a phosphating film. [0003] Phosphating agents include a variety of categories, and zinc-based phosphating agents are commonly used. At present, the research on zinc-based phosphating agents at ho...

Claims

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Application Information

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IPC IPC(8): C23C22/36
CPCC23C22/362
Inventor 李啸春李春山校新克彭志坤李春超
Owner 宁波际超新材料科技有限公司
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