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Preparation technology of normal-temperature multifunctional phosphatization liquid for highway guardrails

A technology of highway and phosphating solution, which is applied in the coating process of metal materials, etc., can solve the problems of high cost and low efficiency, and achieve the effects of saving energy, simplifying the process and shortening the production cycle

Inactive Publication Date: 2014-12-31
WUXI LUOSHE TECH VENTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the cost is large and the efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A preparation process of normal temperature multifunctional phosphating solution for expressway guardrail, the composition of the phosphating solution is: 85% phosphoric acid 135g / L, zinc oxide 45g / L, magnesium oxide 30g / L, calcium hypophosphite 24g / L , triethanolamine 8g / L, sodium nitrite 5g / L, sodium fluoride 5g / L, sodium chlorate 4g / L, citric acid 2.5g / L, ammonium molybdate 2.5g / L, Pingpingjia 5g / L, OP -107.5g / L, the balance is water; the preparation method is as follows: 1) Stir phosphoric acid and citric acid in an acid-resistant container according to their weight percentages; 2) Slowly add zinc oxide made into a paste with water , stirring while adding; 3) Slowly add magnesium oxide made into a paste with water, stirring while adding; 4) Calcium hypophosphite, triethanolamine, sodium nitrite, sodium fluoride, sodium chlorate, citric acid, molybdenum Ammonium Acetate, Pingpingjia, OP-10 and the rest of the water, stir until completely dissolved; 4) Then use ammoni...

Embodiment 2

[0015] A preparation process of normal temperature multifunctional phosphating solution for expressway guardrail, the composition of the phosphating solution is: 145g / L of 85% phosphoric acid, 35g / L of zinc oxide, 40g / L of magnesium oxide, 20g / L of calcium hypophosphite , triethanolamine 12g / L, sodium nitrite 3g / L, sodium fluoride 7g / L, sodium chlorate 2g / L, citric acid 3.5g / L, ammonium molybdate 1.5g / L, Pingpingjia 7g / L, OP -106.5g / L, the balance is water; the preparation method is as follows: 1) Stir phosphoric acid and citric acid in an acid-resistant container according to their weight percentages; 2) Slowly add zinc oxide made into a paste with water , stirring while adding; 3) Slowly add magnesium oxide made into a paste with water, stirring while adding; 4) Calcium hypophosphite, triethanolamine, sodium nitrite, sodium fluoride, sodium chlorate, citric acid, molybdenum Ammonium Acetate, Pingpingjia, OP-10 and the rest of the water, stir until completely dissolved; 4) Th...

Embodiment 3

[0017] A preparation process of normal temperature multifunctional phosphating solution for expressway guardrail, the composition of the phosphating solution is: 85% phosphoric acid 140g / L, zinc oxide 40g / L, magnesium oxide 35g / L, calcium hypophosphite 22g / L , triethanolamine 10g / L, sodium nitrite 4g / L, sodium fluoride 6g / L, sodium chlorate 3g / L, citric acid 3.0g / L, ammonium molybdate 2.0g / L, Pingpingjia 6g / L, OP -107.0g / L, the balance is water; the preparation method is as follows: 1) Stir phosphoric acid and citric acid in an acid-resistant container according to their weight percentage; 2) Slowly add zinc oxide made into a paste with water , stirring while adding; 3) Slowly add magnesium oxide made into a paste with water, stirring while adding; 4) Calcium hypophosphite, triethanolamine, sodium nitrite, sodium fluoride, sodium chlorate, citric acid, molybdenum Ammonium Acetate, Pingpingjia, OP-10 and the rest of the water, stir until completely dissolved; 4) Then use ammoni...

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PUM

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Abstract

The invention discloses a preparation technology of a normal-temperature multifunctional phosphatization liquid for highway guardrails. The preparation technology comprises the following steps: 1, uniformly mixing 135-145g / L of phosphoric acid and citric acid in an acid resistant container according to weight percentages; 2, slowly adding 35-45g / L of pasty zinc oxide while stirring, wherein the pasty zinc oxide is obtained through blending zinc oxide with water; 3, slowly adding 30-40g / L of pasty magnesium oxide while stirring, wherein the pasty magnesium oxide is obtained through blending magnesium oxide with water; 4, adding 20-24g / L of calcium hypophosphite, 8-12g / L of triethanolamine, 3-5g / L of sodium nitrite, 5-7g / L of sodium fluoride, 2-4g / L of sodium chlorate, 2.5-3.5g / L of citric acid, 1.5-2.5g / L of ammonium molybdate, 5-7g / L of peregal, 6.5-7.5g / L of OP-10 and the balance of water, and stirring until complete dissolving; and 4, adjusting the pH value of the obtained solution to 3.0-4.0 by acetic acid.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a preparation process of a normal-temperature multifunctional phosphating solution for expressway guardrails. Background technique [0002] The traditional phosphating process is to wash the oil and rust (scale) on the metal surface with alkali, pickle, and neutralize before phosphating, and then perform phosphating on the metal substrate. Phosphating is the process of forming a layer of chemical conversion film on the metal surface. This layer of phosphating film mainly plays the role of anti-rust and primer, and can significantly improve the adhesion and corrosion resistance of the paint film. At present, medium temperature (45-80°C) and low temperature (30-40°C) phosphating are the most widely used phosphating processes. Chinese patents CN1057681A and CN1066894A respectively report room temperature (12-35°C) phosphating solutions, but these phosphorus When the chemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/44
CPCC23G1/08C23C22/44
Inventor 高忠清
Owner WUXI LUOSHE TECH VENTURE
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