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Metal non-phosphorus pretreatment agent as well as preparation method and treatment method thereof

A pretreatment agent and metal technology, applied in the coating process of metal materials, etc., can solve the problems of phosphorus pollution, heating, unsatisfactory effect, etc., and achieve good results

Inactive Publication Date: 2018-03-06
德清县康祺化学品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former is a classic method with a better effect, but it needs to be heated and has phosphorus pollution. Now it is being gradually controlled.
The latter does not require heating and has no phosphorus, but the treatment effect is poor. At present, it is only used on automatic lines, and the effect on tank immersion lines is very unsatisfactory and cannot be applied to pickling workpieces.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Metal phosphorus-free pretreatment agent, the metal phosphorus-free pretreatment agent comprises 0.5% of A agent aqueous solution and 2% of B agent aqueous solution, and described A agent is made up of the following components by mass percentage: fatty acid salt 5%, poly 1% ethylene glycol, 2% triethanolamine, 2% fatty acid monoethanolamide, and the rest is deionized water; the B agent is composed of the following components in mass percentage: 4% citric acid, 3% hydroxylamine hydrochloride, 1% tartaric acid , sodium hydroxide 1%, sodium molybdate 0.5%, sodium tungstate 0.1%, and the rest is deionized water.

[0018] The preparation method of the above-mentioned metal phosphorus-free pretreatment agent, the preparation method comprises the following steps:

[0019] (1) Preparation of agent A aqueous solution: add fatty acid salt, polyethylene glycol, triethanolamine and fatty acid monoethanolamide in deionized water in order to dissolve, stir until transparent to obtain...

Embodiment 2

[0026] Metal phosphorus-free pretreatment agent, described metal phosphorus-free pretreatment agent comprises 0.7% A agent aqueous solution and 2.5% B agent aqueous solution, and described A agent is made up of the following components by mass percentage: fatty acid salt 8%, poly 1.5% ethylene glycol, 2.5% triethanolamine, 2% fatty acid monoethanolamide, and the rest are deionized water; the B agent is composed of the following components in mass percentage: 4.5% citric acid, 3.5% hydroxylamine hydrochloride, 1% tartaric acid , 1% sodium hydroxide, 0.7% sodium molybdate, 0.2% sodium tungstate, and the rest is deionized water.

[0027] The preparation method of the above-mentioned metal phosphorus-free pretreatment agent, the preparation method comprises the following steps:

[0028] (1) Preparation of agent A aqueous solution: add fatty acid salt, polyethylene glycol, triethanolamine and fatty acid monoethanolamide in deionized water in order to dissolve, stir until transparen...

Embodiment 3

[0035] Metal phosphorus-free pretreatment agent, said metal phosphorus-free pretreatment agent comprises 0.8% of A agent aqueous solution and 3% of B agent aqueous solution, and said A agent is made up of the following components by mass percentage: fatty acid salt 10%, poly 2% ethylene glycol, 3% triethanolamine, 2.5% fatty acid monoethanolamide, and the rest are deionized water; the B agent is composed of the following components in mass percentage: 5% citric acid, 4% hydroxylamine hydrochloride, 1.5% tartaric acid , 1.5% sodium hydroxide, 0.8% sodium molybdate, 0.3% sodium tungstate, and the rest is deionized water.

[0036] The preparation method of the above-mentioned metal phosphorus-free pretreatment agent, the preparation method comprises the following steps:

[0037] (1) Preparation of agent A aqueous solution: add fatty acid salt, polyethylene glycol, triethanolamine and fatty acid monoethanolamide in deionized water in order to dissolve, stir until transparent to ob...

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PUM

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Abstract

The invention discloses a metal non-phosphorus pretreatment agent as well as a preparation method and a treatment method thereof. The metal non-phosphorus pretreatment agent is prepared from 0.5 to 1percent of aqueous solution A and 2 to 4 percent of aqueous solution B, wherein the aqueous solution A is prepared from the following components in percentage by mass: 5 to 15 percent of fatty acid salt, 1 to 3 percent of polyethylene glycol, 2 to 4 percent of triethanolamine, 2 to 3 percent of fatty acid monoethanolamide and the balance of deionized water; the aqueous solution B is prepared fromthe following components in percentage by mass: 4 to 6 percent of citric acid, 3 to 5 percent of hydroxylamine hydrochloride, 1 to 2 percent of tartaric acid, 1 to 2 percent of sodium hydroxide, 0.5 to 1 percent of sodium molybdate, 0.1 to 0.4 percent of sodium tungstate and the balance of deionized water. The metal non-phosphorus pretreatment agent disclosed by the invention is free from phosphorus, can be used at normal temperature, can be applied to treatment of tank leaching lines and acid-washing workpieces, and has a good effect.

Description

technical field [0001] The invention relates to a metal phosphorus-free pretreatment agent, a preparation method and a treatment method thereof, and belongs to the technical field of metal pretreatment. Background technique [0002] At present, there are two main methods of steel coating pretreatment, one is phosphating, and the other is silane or ceramic treatment. The former is a classic method with better effect, but it needs to be heated and has phosphorus pollution, and its use is being gradually controlled now. The latter does not require heating and has no phosphorus, but the treatment effect is poor. At present, it is only used on automatic lines, and the effect on tank dipping lines is very unsatisfactory and cannot be applied to pickling workpieces. Therefore, there is an urgent need to develop a phosphorus-free pretreatment agent for metals that does not contain phosphorus and can be used at room temperature and can be used for tank dipping wires and pickling wor...

Claims

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Application Information

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IPC IPC(8): C23C22/05C23C22/73
CPCC23C22/05C23C22/73
Inventor 黄正
Owner 德清县康祺化学品有限公司
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