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High-corrosion-resistance composite coating for surface of metal workpiece and preparation method

A technology for composite coatings and metal workpieces, applied in anti-corrosion coatings, devices for coating liquid on the surface, coatings, etc., can solve the problems that the anti-corrosion performance of aluminum tripolyphosphate cannot be fully utilized, and achieve excellent anti-corrosion capabilities Effect

Active Publication Date: 2017-11-21
LUOHE MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this modification will result in the inability to give full play to the excellent anti-corrosion properties of aluminum tripolyphosphate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 108 parts of ultra-fine aluminum tripolyphosphate powder (particle size 25 μm), 432 parts of nano-scale silicon dioxide powder (particle size 30 nm), 42 parts of ultra-fine calcium oxide powder (particle size 20 μm) and 18 parts of zinc stearate, add to Premixed in a ball mill for 30 minutes. Weigh 12 parts of polyethylene glycol (PEG-400), 24 parts of water and 364 parts of ethanol, add them into the container, and stir mechanically to completely dissolve the polyethylene glycol into the ethanol. The mixed powder and the mixed solvent are mixed together, and then dispersed for 60 minutes with a horizontal sand mill to obtain the aluminum tripolyphosphate coating.

[0019] The aluminum tripolyphosphate paint is sprayed on the surface of the metal workpiece and dried at room temperature.

[0020] Weigh 100 parts of xylene, 355 parts of 200# gasoline, 300 parts of epoxy resin (E-51, epoxy value 0.51) and 100 parts of cyanuric acid triglycidyl epoxy resin (ISEP, epo...

Embodiment 2

[0025] Weigh 170 parts of ultra-fine aluminum tripolyphosphate powder (particle size 15 μm), 390 parts of nano-scale silicon dioxide powder (particle size 100 nm), 22 parts of ultra-fine calcium oxide powder (particle size 20 μm) and 18 parts of zinc stearate, add to Premixed in a ball mill for 30 minutes. Weigh 22 parts of polyethylene glycol (PEG-1000), 28 parts of water and 350 parts of ethanol, add them into the container, and stir mechanically to completely dissolve the polyethylene glycol into the ethanol. The mixed powder and the mixed solvent are mixed together, and then dispersed for 60 minutes with a horizontal sand mill to obtain the aluminum tripolyphosphate coating.

[0026] The aluminum tripolyphosphate paint is sprayed on the surface of the metal workpiece and dried at room temperature.

[0027] Weigh 150 parts of xylene, 292 parts of 200# gasoline, 300 parts of epoxy resin (E-44, epoxy value 0.44) and 100 parts of cyanuric acid triglycidyl epoxy resin (ISEP, e...

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Abstract

The invention provides a high-corrosion-resistance composite coating for the surface of a metal workpiece and a preparation method. The high-corrosion-resistance composite coating for the surface of the metal workpiece and the preparation method are characterized in that the composite coating comprises an aluminum triphosphate corrosion-resistant layer and an epoxy resin coating material layer, and the preparation method of the composite coating comprises the following steps that a first step, an aluminum triphosphate coating material is smeared on the surface of the workpiece, and surface drying is conducted; a second step, an epoxy resin coating material is smeared on the surface of the workpiece, and high temperature curing is conducted; and a third step, infrared laser is adopted to scan the surface of the workpiece. The aluminum triphosphate coating material is suspension liquid formed by dispersing a superfine aluminum triphosphate powder, a nano-scale silica dioxide powder, a superfine calcium oxide powder and zinc stearate, and the components of the epoxy resin coating material comprise bisphenol A epoxy resin, cyanuric acid triglycidyl epoxy resin, m-phenylenediamine, polyether polyamine, xylene and high boiling-point gasoline. An infrared laser scanning technology is that the power is 1-3 kW, the scanning speed is 8-12 mm / s, and the power density is 1-5 kJ / cm<2>.

Description

technical field [0001] The invention relates to an anti-corrosion coating on the surface of a metal workpiece and a preparation method thereof, in particular to a composite coating applied on the surface of a metal workpiece with high requirements on surface anti-corrosion performance and a preparation method thereof. Background technique [0002] Steel, cast iron, non-ferrous metals, etc. are used in all fields of the national economy, so metal corrosion protection is very important. Anticorrosion of organic coatings is by far the most effective, most economical and practical and most widely used method of metal anticorrosion. Among them, epoxy resin anti-corrosion coating has the best overall performance and is most widely used. In epoxy resin coating, the cross-linked and cured epoxy resin forms a continuous film, which is coated with anti-corrosion pigments. The anti-corrosion effect of the coating is not only related to the performance of the film-forming resin, but a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D7/00C09D1/00C09D5/08C09D163/00
CPCB05D7/14B05D7/544B05D2504/00C08L2205/025C09D1/00C09D5/08C09D163/00C08L63/00
Inventor 张海涛刘岚王飞
Owner LUOHE MEDICAL COLLEGE
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