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Self-lubricating passivation solution and hot galvanizing self-lubricating coating steel sheet coated thereby

A passivation liquid, self-lubricating technology, applied in coatings, layered products, anti-corrosion coatings, etc., can solve problems such as passivation liquid pollution, achieve excellent corrosion resistance, improve processing and forming performance, paintability and adhesion. good effect

Inactive Publication Date: 2013-09-11
ANHUI UNIVERSITY OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the invention is to overcome the Cr that occurs in the passivation treatment of hot-dip galvanized sheet 6+ The pollution of the passivation solution to the environment, the need to add lubricating oil to the mold during the deformation process, and the prevention of cracking of the steel plate during the stamping process, etc., and provide an environmentally friendly, corrosion-resistant, anti-wear extreme pressure, coating and self-lubricating self-lubricating passivation fluid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Preparation of self-lubricating passivation solution

[0041] 500g of MoS with a particle size of 10-20nm 2 Add polytetrafluoroethylene particles (by mass ratio 1:1) to 500g of stearic acid, stir for 4h under high-speed mechanical agitator JJ-1, and then ultrasonically vibrate for 2h to obtain a dispersion; - Add 100 g of aminopropyltrimethoxysilane to 850 g of deionized water, adjust the pH value to 4 with acetic acid, and add 50 g of water-based epoxy resin under stirring conditions to obtain a chromium-free passivation solution. Add 30g of dispersion liquid to 70g of chromium-free passivation solution, and add an appropriate amount of film-forming aid 30% H 2 o 2 Modified H 2 TiF 6 , Accelerator sodium silicate, phytic acid and other substances, the balance is a solution, and 1Kg of self-lubricating passivation solution is prepared.

[0042] (2) Preparation of hot-dip galvanized self-lubricating coated steel sheet

[0043] Under normal temperature condition...

Embodiment 2

[0045] (1) Preparation of self-lubricating passivation solution

[0046] 400g of MoS with a particle size of 10-20nm 2 Add polytetrafluoroethylene particles (according to mass ratio 1:1) to 600g stearic acid, 4h under high-speed mechanical stirrer JJ-1 stirring condition, then ultrasonic vibration 2h, obtain dispersion liquid; Silane coupling agent γ - Add 50 g of aminopropyltriethoxysilane to 850 g of deionized water, adjust the pH value to 5 with acetic acid, and add 100 g of water-based acrylic resin under stirring conditions to obtain a chromium-free passivation solution. Add 40g of dispersion liquid to 60g of chrome-free passivation solution, add an appropriate amount of film-forming aid 30% H 2 o 2 Modified H 2 TiF 6 , Accelerator sodium silicate, citric acid and other substances, the balance is a solution, and prepare 1Kg self-lubricating passivation solution.

[0047] (2) Preparation of hot-dip galvanized self-lubricating coated steel sheet

[0048] Under normal ...

Embodiment 3

[0051] (1) Preparation of self-lubricating passivation solution

[0052] 500g of MoS with a particle size of 10-20nm 2 Add polytetrafluoroethylene particles (according to the mass ratio of 1:1) to 500g of zinc dialkyldithiophosphate solution, stir for 3 hours under the condition of high-speed mechanical stirrer JJ-1, and then ultrasonically shake for 3 hours to obtain a dispersion; Add 100g of silane coupling agent 3-(2,3-epoxypropoxy)propyltrimethoxysilane to 850g deionized water, adjust the pH value to 4 with acetic acid, and add 50g of water-based polyurethane resin under stirring conditions to obtain chrome-free passivation solution. Add 35g of dispersion liquid to 65g of chromium-free passivation solution, and add appropriate amount of film-forming aid nano-SiO in turn under stirring condition 2 , Accelerator sodium silicate, phytic acid and other substances, the balance is a solution, and 1Kg of self-lubricating passivation solution is prepared.

[0053] (2) Preparati...

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Abstract

The invention discloses a self-lubricating passivation solution and a hot galvanizing self-lubricating coating steel sheet coated thereby. The self-lubricating passivation solution is formed by modified solid lubricants, a film forming matter, a film forming additive, an accelerant, a pH modifier, an organic solvent and deionized water through compounding. The solid content after compounding is 15-25%, and the modified solid lubricants are modified nanometer MoS2 and modified nanometer teflon particles. According to the total weight of 1000g, the self-lubricating passivation solution comprises the following components: 10-20g / kg of modified nanometer MoS2, 10-20g / kg of modified nanometer teflon particles, 80-120g / kg of film forming matter, 10-30g / kg of film forming additive, 5-15g / kg of the accelerant and the balance of mixed solution of the organic solvent and the deionized water; and the pH value is adjusted to 3-6 by the pH modifier. The hot galvanizing self-lubricating coating steel sheet coated by the self-lubricating passivation solution comprises a hot galvanizing substrate and a self-lubricating coating attached to the hot galvanizing substrate. The self-lubricating passivation solution does not contain Cr<6+> and other environmentally harmful substances and has environmental protection property, corrosion resistance, wear extreme pressure resistance as well as coating and self-lubrication properties.

Description

technical field [0001] The invention relates to a self-lubricating coating for passivating hot-dip galvanized steel sheets. The invention also relates to galvanized self-lubricating coated steel sheets coated with self-lubricating coatings, especially to hot-dip galvanized self-lubricating coatings steel plate. Background technique [0002] Most of the hot-dip galvanized materials need to undergo a certain deformation process during use, especially in the stamping process, it is necessary to add lubricating oil to the mold to reduce the friction between the mold and the steel plate, and prevent the steel plate from cracking or other defects during the deformation process. After the stamping parts are formed, it is necessary to use detergent to remove the oil stains on the surface of the parts. The detergent usually contains trichloroethane and Freon. These substances not only damage the atmospheric ozone layer, but also have a damaging effect on the environment. For this rea...

Claims

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Application Information

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IPC IPC(8): C09D183/08C09D183/06C09D163/00C09D133/00C09D127/12C09D175/04C09D133/04C09D7/12C09D5/08B32B15/08
Inventor 张千峰张振海汪亚楠田飘飘
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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