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High performance chlorinated polyethylene-epoxy resin anticorrosive coating system

A high-chlorinated polyethylene, epoxy resin technology, applied in epoxy resin coatings, anti-corrosion coatings, polyamide coatings and other directions, can solve problems such as unreported, and achieve the effects of low cost, easy control and simple preparation method

Inactive Publication Date: 2010-04-07
郭再春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are almost no reports on related research work

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] High chlorinated polyethylene anti-corrosion topcoat. Add high chlorinated polyethylene, plasticizer chlorinated paraffin, and toughener bisphenol A epoxy resin to the mixed solvent according to the following formula, fully dissolve under stirring, then add dispersant, defoamer, and then add mica Disperse at high speed for 45 minutes, finally add leveling agent, stir at slow speed for 1 hour, filter and pack to obtain high chlorinated polyethylene anti-corrosion topcoat. The surface drying time of the coating is less than 30 minutes, the hard drying time is less than 12 hours, the coating adhesion is grade 1 (circle method), the impact strength is 50mm, the paint film does not change after 30 days of 5% NaOH solution immersion, 5% H 2 SO 4 The paint film has no change after soaking in the solution for 30 days, and the paint film has no change after soaking in 3% NaCl solution for 30 days, and the gasoline resistance 120# is qualified.

[0040] Medium molecular weight ...

Embodiment 2

[0049]Embodiment 2: high chlorinated polyethylene anticorrosion topcoat. Add high chlorinated polyethylene, plasticizer chlorinated paraffin, and toughener bisphenol A epoxy resin to the mixed solvent according to the following formula, fully dissolve under stirring, then add dispersant, defoamer, and then add mica Disperse at high speed for 45 minutes, finally add leveling agent, stir at slow speed for 1 hour, filter and pack to obtain high chlorinated polyethylene anti-corrosion topcoat. The surface drying time of the coating is less than 40 minutes, the hard drying time is less than 18 hours, the coating adhesion is 1-2 (circle method), the impact strength is 50mm, the paint film does not change after 30 days of 5% NaOH solution immersion, 5% H 2 SO 4 The paint film has no change after soaking in the solution for 30 days, and the paint film has no change after soaking in 3% NaCl solution for 30 days, and the gasoline resistance 120# is qualified.

[0050] Medium molecular...

Embodiment 3

[0060] Embodiment 3: high chlorinated polyethylene / epoxy resin semi-interpenetrating network anticorrosion intermediate paint. Add high-chlorinated polyethylene, epoxy resin E51, benzyl glycidyl ether and polypropylene glycol glycidyl ether to the mixed solvent according to the following formula, dissolve fully under stirring, then add dispersant, defoamer, and mica high-speed Disperse for 45 minutes, finally add leveling agent, stir slowly for 1 hour, filter and pack separately as component A. Then weigh component B according to the formula and pack it separately to obtain high chlorinated polyethylene / epoxy resin semi-interpenetrating network anticorrosion intermediate paint. The surface drying time of the paint is less than 40 minutes, the hard drying time is less than 18 hours, the coating adhesion is 1-2 (circle method), the impact strength is 50mm, and the paint film does not change after 40 days of 5% NaOH solution immersion, 5% H 2 SO 4 The paint film has no change a...

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Abstract

The invention discloses a high performance chlorinated polyethylene-epoxy resin anticorrosive coating system, which consists of a surface coating, an intermediate coating and a prime coating which are matched, wherein the surface coating is a high performance chlorinated polyethylene anticorrosive finish paint; the intermediate coating is a high performance chlorinated polyethylene / epoxy resin semi-interpenetrating network anticorrosive middle coating; and the prime coating is an epoxy resin micaceous iron oxide anti-corrosive primer. The preparation for the coating system comprises the preparation of surface coating and the intermediate coating; the coating construction is orderly multi-layer coating construction on the surface of a metal substrate; and finally the functionally graded anticorrosive coating is formed so as to effectively improve interface bonding force and adhesive force of various layers and fully exert the corrosion resistance of the high performance chlorinated polyethylene and the substrate bonding function of the epoxy resin; and the functionally graded anticorrosive coating has good corrosion resistance, such as the resistance to acid, alkali, saline water, gasoline and the like, and also has good physical and mechanical properties, such as shock resistance and flexibility, so the functionally graded anticorrosive coating has important application value in anticorrosive fields such as steel structures, bridges, metallurgy, chemical industry and the like, in particular heavy duty anticorrosive field of petrochemical industry.

Description

technical field [0001] The invention relates to the fields of polymer anticorrosion coatings and functionally gradient materials, in particular to a high-chlorinated polyethylene-epoxy resin functionally gradient anticorrosion coating system and a preparation method thereof. Background technique [0002] While metal materials have created rich material civilization for human beings, metal corrosion has also caused huge losses to human society, and anti-corrosion coatings are a simple and effective method to prevent and slow down corrosion. Chlorinated rubber anti-corrosion coating is a kind of cheap anti-corrosion coating, but due to the serious pollution in the production process of chlorinated rubber, developed countries in the world have banned it since 2000, and my country will also begin to restrict production in 2010. Highly chlorinated polyethylene resin (HCPE) is a random polymer formed by chlorination of polyethylene. The chlorine content in its molecule can reach 6...

Claims

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Application Information

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IPC IPC(8): C09D123/28C09D163/00C09D177/00C09D7/12C09D163/02C09D5/08
Inventor 郭再春张超灿陈艳军吴力立陈万钰李兴畅
Owner 郭再春
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