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One-step phosphorus-free coating agent

A coating agent and step-by-step technology, applied in the field of one-step phosphorus-free coating agent, can solve the problems of high investment cost, large equipment area, and different metals cannot be coated, achieving high energy consumption and small floor space. , Excellent degreasing effect

Active Publication Date: 2016-03-16
南京金环生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Moreover, the coating agents in the prior art are highly targeted, and different metals need to use different coating agents, so different metals cannot be coated in the same bath
[0005] Before the metal is coated with a film, it is necessary to degrease the metal surface. When the film agent of the prior art is used, the degreasing and the film need to be carried out step by step, and the equipment occupies a large area and the investment cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Mix 2% of fluorozirconic acid, 2% of polyethylene glycol (12000), 0.6% of sodium fluoride, 1.5% of acrylic acid, OP-100.1%, and water to obtain a one-step phosphorus-free coating agent. Percentages are mass percentages.

Embodiment 2

[0028] Mix 4% of fluozirconic acid, 3.5% of polyethylene glycol (12000), 0.1% of sodium fluoride, 0.5% of acrylic acid, 0P-100.3% of water, and mix well to obtain a one-step phosphorus-free coating agent. Percentages are mass percentages.

[0029] Using the film agent obtained in Example 1-2, one process of degreasing the epidermal film is completed, and then the epidermal film process is completed through two water washes after the film is applied, and different metals such as aluminum alloy workpieces, galvanized workpieces, and steel workpieces can be used The workpiece is placed in the same bath and coated with a film.

[0030] When the temperature is 35°, the coating agent obtained in Example 1-2 is used to form a film on the steel plate, the filming time is 1.5-2.5 minutes, and the film thickness is 0.2 μm. Wash the coated steel plate with water → dry → soak in 3% NaCl solution for more than 1 hour → wash with water, without any rust spots. The steel plate used is the ...

Embodiment 3

[0038] Mix 4% fluorozirconic acid, 3.5% polyethylene glycol (12000), 0.1% sodium fluoride, 0.5% acrylic acid, 0.5% potassium fluorotitanate, OP-100.3%, and water as the balance, and mix well to obtain a one-step method Phosphorus-free coating agent, said percentage is mass percentage.

[0039] Using the film agent obtained in Example 3, one process of degreasing and covering the film is completed, and then the film is washed through two water washes to complete the process of covering the film, and different metal workpieces such as aluminum alloy workpieces, galvanized workpieces, steel workpieces, etc. Put the film in the same bath.

[0040]When the temperature was 35°, the coating agent obtained in Example 3 was used to form a film on the steel plate, the filming time was 1.5-2.5 minutes, and the film thickness was 0.1 μm. Wash the coated steel plate with water → dry → soak in 3% NaCl solution for more than 1 hour → wash with water, without any rust spots. The steel plate...

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PUM

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Abstract

The invention discloses a one-step method non-phosphorus skin film agent which comprises the ingredients by mass percent: 2-4% of fluorine zirconic acid, 0-1% of sodium molybdate, 0-0.8% of potassium fluotitanate, 2-3.5% of polyethylene glycol, 0.1-0.6% of sodium fluoride, 0.5-1.5% of acrylic acid, 0-1% of citric acid, 0-1.5% of oxalic acid, 0.1-0.5% of emulsifier and the balance of water. Unoiling and skin film coating are accomplished in one process, and a whole pretreatment process is accomplished through twice washing, so that the conventional six processes are greatly simplified, and the equipment investment is reduced.

Description

technical field [0001] The invention relates to a one-step phosphorus-free coating agent. Background technique [0002] As a metal surface treatment agent, the film agent can prevent the metal surface from oxidizing, and can also enhance the adhesion of the paint film when the subsequent paint film is sprayed. It is widely used in the field of metal products. [0003] In the prior art, coating agents include phosphorus-containing coating agents and phosphorus-free coating agents. Phosphorus-containing film agents cause serious environmental pollution. With the strengthening of environmental protection work, the pollution of phosphorus has been highly valued by relevant departments and enterprises at home and abroad. There are many regions and cities in China that prohibit the use of phosphorus-containing washing powder and Phosphorus-containing cleaning agents, environmental protection departments have become more and more strict on the treatment of phosphorus in wastewater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/46
Inventor 陈涛江涛
Owner 南京金环生物技术有限公司
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