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Phosphorus-free environmental-friendly metal surface pretreatment liquid and utilization method thereof

A technology for treating liquids and metals, applied in the coating process of metal materials, etc., can solve the problems of easy aging, poor film formation, poor stability, etc., and achieve the effect of excellent weather resistance and aging resistance, good hydrophobic performance

Inactive Publication Date: 2017-08-29
JINGMEN TUODA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Yet existing metal surface pretreatment liquid, existing phosphorus-free pretreatment liquid forms inorganic, organic or inorganic-organic composite film mostly, but most film-forming property is not good, or the stability after film-forming is not good and easy to aging, therefore , it is necessary to develop a phosphorus-free and environmentally friendly metal surface pretreatment solution

Method used

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  • Phosphorus-free environmental-friendly metal surface pretreatment liquid and utilization method thereof
  • Phosphorus-free environmental-friendly metal surface pretreatment liquid and utilization method thereof
  • Phosphorus-free environmental-friendly metal surface pretreatment liquid and utilization method thereof

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Embodiment 1-20

[0077] The present invention prepares phosphorus-free environmental protection metal surface pretreatment liquid according to the prescription in table 1 and table 2, and preparation method is as follows (the consumption of following components is all parts by weight):

[0078] (1) Add the formulated amount of aqueous resin dispersion, coupling agent, hydrophobic agent, and ammonium fluoroborate into deionized water, heat to 60-80°C and stir for 30 minutes, and cool to room temperature to obtain a mixed solution;

[0079] (2) adjusting the pH of the mixed solution obtained in step (1) to 7-12 with a pH regulator;

[0080] (3) adding the metal compound in the formula amount and stirring for 1 hour at normal temperature to obtain the phosphorus-free and environment-friendly metal surface pretreatment solution; wherein,

[0081] The pH regulator is one or more of ammonia water, ammonium fluoride, formic acid, acetic acid, butyric acid, oxalic acid, hydrofluoric acid, nitric acid,...

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Abstract

The invention relates to phosphorus-free environmental-friendly metal surface pretreatment liquid and a utilization method thereof. The phosphorus-free environmental-friendly metal surface pretreatment liquid is prepared from, by weight, 3-18 parts of a metal compound, 5-60 parts of water-based resin dispersion, 1.5-6 parts of a coupling agent, 0-5 parts of a light stabilizer, 0-7 parts of a water-repellent agent, 1-3 parts of ammonium fluoroborate and deionized water which accounts for 60-65% of the weight of the whole components, wherein the water-repellent agent is hydrophobic Y2O3 with a micro-nano structure. The invention also relates to application of the phosphorus-free environmental-friendly metal surface pretreatment liquid to metal surface treatment, in particular to application to metal surface treatment of galvanized steel plates, aluminum plates or copper plates.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, and more specifically, the invention relates to a phosphorus-free and environment-friendly metal surface pretreatment liquid and a use method thereof. Background technique [0002] When the metal is used in the daily environment, it will react with water, oxygen, acid and other impurities in the environment under certain conditions to corrode the metal. To improve the corrosion resistance of metals, phosphating the metal to form a phosphating film on the metal surface has become the main way of metal anti-corrosion. Currently, phosphate treatment or chromium phosphate treatment is used to use phosphorus surface treatment agents. Methods, the impact of phosphorus and chromium on the environment has forced countries all over the world to limit the use of phosphorus and chromium. [0003] Yet existing metal surface pretreatment liquid, existing phosphorus-free pretreatment liquid fo...

Claims

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Application Information

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IPC IPC(8): C23C22/68C23C22/60
CPCC23C22/68C23C22/60
Inventor 刘银松刘银智
Owner JINGMEN TUODA TECH CO LTD
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