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Single-component modified high chlorinated polyethylene weathering resistant residual rust painting

A technology of high-chlorinated polyethylene and rust-coated coatings, which is applied in the direction of anti-corrosion coatings and coatings, and can solve problems such as high prices, low costs, and complicated processes

Inactive Publication Date: 2010-06-23
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of complex surface rust removal, traditional two-component rust coatings with expensive price, complex process and poor weather resistance in the coating construction of steel structures, the purpose of the present invention is to provide a high-efficiency, low-cost, weather-resistant and aging-resistant coating. Excellent, high chlorinated polyethylene anti-corrosion coating applied on the surface of rusted steel structure, so that the product achieves excellent mechanical properties of the coating, with direct corrosion resistance of chemical media such as strong acid, strong alkali, salt water and salt spray, and water resistance, oil resistance, and corrosion resistance. Features such as UV aging and low cost

Method used

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  • Single-component modified high chlorinated polyethylene weathering resistant residual rust painting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Table 4 Example 1 formula

[0044] material name

[0045] material name

[0046] According to Table 4, add zinc molybdate, zinc phosphate and aluminum tripolyphosphate into 210 phenolic resin and C9 petroleum resin with a mass ratio of 2:1, add anti-sedimentation agent and dispersant, and pre-grind in a grinder to achieve fine Degree 50μm. Epoxy resin E51, TiO 2 Pre-grind with xylene according to the ratio, the fineness is 50μm. Mix the two pre-ground materials with high chlorinated polyethylene resin according to the ratio, add defoamer, and grind to a fineness of 30 μm.

[0047] Table 5 Example 1 coating main performance index

[0048] project

[0049] project

[0050] Note: The above test coatings are all applied to the steel structure with a rust layer thickness of 60μm

Embodiment 2

[0052] Table 6 Embodiment 2 formula

[0053] material name

[0054] material name

[0055] Add iron oxide red and zinc oxide into 210 phenolic resin and C9 petroleum resin with a mass ratio of 5:1 according to Table 6, add anti-sedimentation agent, nano-SiO 2 and dispersant, pre-grinded in a grinder to a fineness of 50 μm. Epoxy resin E51, TiO 2 Pre-grind with xylene according to the ratio, the fineness is 50μm. Mix the two pre-grinding materials with high chlorinated polyethylene resin according to the ratio and add defoamer, and grind to a fineness of 30 μm.

[0056] Table 7 embodiment 2 main performance index of coating

[0057] project

[0058] project

[0059] Note: The above test coatings are all applied to the steel structure with a rust layer thickness of 60μm

Embodiment 3

[0061] Table 8 Example 3 formulation

[0062] material name

[0063] material name

[0064] Add zinc molybdate, zinc phosphate and aluminum tripolyphosphate in the 210 phenolic resin and C9 petroleum resin with a mass ratio of 3:1 according to Table 8, add anti-settling agent, nano-SiO 2 and dispersant, pre-grinded in a grinder to a fineness of 50 μm. Epoxy resin E51, TiO 2 Pre-grind with xylene according to the ratio, the fineness is 50μm. Mix the two pre-ground materials with high chlorinated polyethylene resin according to the ratio, add defoamer, and grind to a fineness of 30 μm.

[0065] Table 9 Example 3 coating main performance index

[0066] project

[0067] project

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Abstract

The invention relates to the technical field of forming painting materials using an organic film as a main body, in particular to a weathering resistant single-component high chlorinated polyethylene anticorrosion painting applied to the surface of a residual rust steel structure, and the residual rust painting consists of a film-forming resin matrix which is the compound resin-modified high-chlorinated polyethylene with the molecular weight ranging from 15,000 to 25,000, residual rust painting dyes, an antirusting agent, a dispersing agent, an anti-settling agent and a defoaming agent; and the residual rust painting can be used in the steel structure with a less than 80 mu m rusty layer and has excellent weathering resistant and ageing properties, low cost and easy construction, and is suitable to be used for the heavy corrosion protection projects of the steel structures of ships, trains, bridges and ocean petrochemical industry.

Description

technical field [0001] The invention relates to a paint chemical material mainly formed of an organic film, in particular to a weather-resistant single-component high-chlorinated polyethylene anti-corrosion paint applied on the surface of a rusted steel structure. Background technique [0002] Since the 1980s, my country has successfully developed a variety of anti-corrosion coatings with rust, such as chlorosulfonated polyethylene coatings, chlorinated rubber coatings, etc. According to the needs of the department, most anti-corrosion coatings have short service life and poor performance, and are not suitable for application in offshore coastal environments and chemical and metallurgical production environments; epoxy rust coatings have outstanding performance on the reverse side of water and rust coatings, but their weather resistance is poor. Poor, the price is relatively expensive. According to reports, in terms of coating research, developed countries have developed towa...

Claims

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Application Information

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IPC IPC(8): C09D123/28C09D161/06C09D157/02C09D5/08
Inventor 李伟华田惠文金国善邓俊英侯保荣
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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