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Chromium-free passivating agent for pylon and preparation method of chromium-free passivating agent for pylon

A chromium-free passivator and high-voltage line tower technology, which is applied in the coating process of metal materials, etc., can solve the problems of hexavalent chromium being harmful to health and polluting the environment, and achieve good weather resistance, simple preparation method, and strong corrosion resistance Effect

Active Publication Date: 2016-08-10
WUXI EPIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The use of traditional hexavalent chromium passivators can effectively improve the corrosion resistance of metals, but hexavalent chromium is harmful to health and pollutes the environment, so it is gradually eliminated

Method used

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  • Chromium-free passivating agent for pylon and preparation method of chromium-free passivating agent for pylon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A chromium-free passivator for high-voltage line towers, including the following raw materials in parts by mass: 20 parts of phytic acid, 4 parts of sodium cinnamate, 3 parts of sodium gluconate, 6 parts of maleic acid resin, polytetrafluoroethylene concentrated 15 parts of dispersion liquid, 2 parts of fatty alcohol polyoxyethylene ether, 3 parts of sulfonated lignin, 13 parts of ethanol, and 15 parts of water, wherein the solid content of the polytetrafluoroethylene concentrated dispersion liquid is 58%.

[0022] The above-mentioned preparation method for the chromium-free passivating agent of high-pressure line tower, comprises the steps:

[0023] (1) First add sulfonated lignin to water, then add sodium cinnamate and sodium gluconate, and stir evenly to obtain mixture A;

[0024] (2) Add phytic acid, fatty alcohol polyoxyethylene ether and maleic acid resin to ethanol in sequence, and stir at 100r / min for 1-2h to obtain mixture B;

[0025] (3) Mix the mixture A and...

Embodiment 2

[0027] A chromium-free passivator for high-voltage line towers, including the following raw materials in parts by mass: 24 parts of phytic acid, 5 parts of sodium cinnamate, 5 parts of sodium gluconate, 7 parts of maleic acid resin, polytetrafluoroethylene concentrated 18 parts of dispersion liquid, 3 parts of fatty alcohol polyoxyethylene ether, 4 parts of sulfonated lignin, 16 parts of ethanol, and 19 parts of water, wherein the polytetrafluoroethylene concentrated dispersion has a solid content of 59%.

[0028] The above-mentioned preparation method for the chromium-free passivating agent of high-pressure line tower, comprises the steps:

[0029] (1) First add sulfonated lignin to water, then add sodium cinnamate and sodium gluconate, and stir evenly to obtain mixture A;

[0030] (2) Add phytic acid, fatty alcohol polyoxyethylene ether and maleic acid resin to ethanol in sequence, and stir at 105r / min for 1-2h to obtain mixture B;

[0031] (3) Mix the mixture A and the mix...

Embodiment 3

[0033] A chromium-free passivator for high-voltage line towers, including the following raw materials in parts by mass: 28 parts of phytic acid, 7 parts of sodium cinnamate, 6 parts of sodium gluconate, 9 parts of maleic acid resin, polytetrafluoroethylene concentrated 21 parts of dispersion liquid, 4 parts of fatty alcohol polyoxyethylene ether, 6 parts of sulfonated lignin, 20 parts of ethanol, and 23 parts of water, wherein the polytetrafluoroethylene concentrated dispersion has a solid content of 60%.

[0034] The above-mentioned preparation method for the chromium-free passivating agent of high-pressure line tower, comprises the steps:

[0035] (1) First add sulfonated lignin to water, then add sodium cinnamate and sodium gluconate, and stir evenly to obtain mixture A;

[0036] (2) Add phytic acid, fatty alcohol polyoxyethylene ether and maleic acid resin to ethanol in sequence, and stir at 110r / min for 1-2h to obtain mixture B;

[0037] (3) Mix the mixture A and the mix...

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Abstract

The invention particularly relates to a chromium-free passivating agent for a pylon and a preparation method of the chromium-free passivating agent for the pylon and belongs to the technical field of metal surface treatment. The chromium-free passivating agent for the pylon is prepared from, by mass, 20-35 parts of phytic acid, 4-12 parts of sodium cinnamate, 3-10 parts of sodium gluconate, 6-15 parts of maleic resin, 15-28 parts of polytetrafluoroethylene concentrated dispersion liquid, 2-5 parts of fatty alcohol polyoxyethylene ether, 3-10 parts of lignin sulfonate, 13-25 parts of ethanol and 15-30 parts of water. The chromium-free passivating agent for the pylon has the beneficial effects of being high in corrosion resistance and weather resistance, does not contain hexavalent chromium and is friendly to the environment.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a chromium-free passivator for high-voltage line towers and a preparation method thereof. Background technique [0002] High-voltage line towers have been exposed to the outdoors, and they have been exposed to harsh environmental conditions such as exposure to the sun, rain, humidity, or coastal salt fog for a long time, so they are prone to rust, and the maintenance costs of the facilities are high, which seriously affects the safety and trouble-free service life of power and communication facilities. Rust protection is extremely important. At present, although external paint or hot-dip galvanizing is used for treatment, the effect is not very obvious, so passivation treatment is generally carried out on the external surface. [0003] The use of traditional hexavalent chromium passivators can effectively improve the corrosion resistance of metals, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/50
CPCC23C22/50
Inventor 尤为
Owner WUXI EPIC TECH
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