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Dissolvent-free polyurethane weather-proof anticorrosive coating for storage tank

A technology of solvent-free polyurethane and anti-corrosion coatings, applied in the direction of polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve problems such as air bubbles, affecting coating performance, and lack of weather resistance, so as to achieve good anti-corrosion performance and reduce coating The problem of layer bubbles and the effect of improving the overall technical level

Active Publication Date: 2013-12-04
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the polypropylene oxide polyol obtained by anionic ring-opening polymerization, its terminal hydroxyl group is a secondary hydroxyl group, which is easy to react with the residual trace water in component A or the moisture in the atmosphere to generate bubbles, thereby affecting the performance of the coating, and , the solvent-free polyurethane coating does not have weather resistance requirements

Method used

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  • Dissolvent-free polyurethane weather-proof anticorrosive coating for storage tank
  • Dissolvent-free polyurethane weather-proof anticorrosive coating for storage tank
  • Dissolvent-free polyurethane weather-proof anticorrosive coating for storage tank

Examples

Experimental program
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Effect test

Embodiment 1

[0036]This embodiment provides a solvent-free polyurethane weather-resistant anti-corrosion coating, which is composed of component A and component B, wherein, in terms of the weight percentage of component A, component A includes: polyester polyether polyol ( SOVERMOL750) 30%, fatty acid polyethylene glycol ester (dispersant) 0.4%, silicone defoamer 0.5%, solvent-free modified silicone leveling agent (EFKA3239) 0.3%, 3-butyl-2-(1 -Ethylpentyl)oxazolidine (water removal agent) 5.0%, fumed silica (anti-settling agent) 0.5%, lead isooctanoate (curing accelerator) 0.5%, benzotriazole mixture (ultraviolet light absorption agent) 1.5%, sebacate mixture (light stabilizer) 1.0%, n-octadecyl propionate (antioxidant) 0.3%, aluminum dihydrogen tripolyphosphate 12%, using zirconia and alumina Inorganic coated rutile titanium dioxide (titanium dioxide content 94wt%) 22%, barium sulfate 21%, zeolite powder 5.0%;

[0037] Component B is curing agent (HDI trimer), and its content accounts f...

Embodiment 2

[0039] This embodiment provides a solvent-free polyurethane weather-resistant anti-corrosion coating, which is composed of component A and component B, wherein, in terms of the weight percentage of component A, component A includes: polyester polyether polyol ( SOVERMOL750) 38%, fatty acid polyethylene glycol ester (dispersant) 0.3%, silicone defoamer 0.5%, solvent-free modified silicone leveling agent (EFKA3239) 0.4%, 3-butyl-2-(1 -Ethylpentyl)oxazolidine (water removal agent) 2.0%, fumed silica (anti-settling agent) 0.5%, lead isooctanoate (curing accelerator) 0.8%, benzotriazole mixture (ultraviolet light absorption agent) 2.0%, sebacate mixture (light stabilizer) 1.0%, n-octadecyl propionate (antioxidant) 0.5%, aluminum dihydrogen tripolyphosphate 12%, using zirconia and alumina Inorganic coated rutile titanium dioxide (titanium dioxide content 94wt%) 19%, barium sulfate 19%, zeolite powder 4.0%;

[0040] Component B is curing agent (HDI trimer), and its content accounts ...

Embodiment 3

[0042] This embodiment provides a solvent-free polyurethane weather-resistant anti-corrosion coating, which is composed of component A and component B, wherein, in terms of the weight percentage of component A, component A includes: polyester polyether polyol ( SOVERMOL750) 50%, fatty acid polyethylene glycol ester (dispersant) 0.3%, silicone defoamer 0.5%, solvent-free modified silicone leveling agent (EFKA3239) 0.5%, 3-butyl-2-(1 -Ethylpentyl)oxazolidine (water removal agent) 3.0%, fumed silica (anti-settling agent) 0.8%, lead isooctanoate (curing accelerator) 0.8%, benzotriazole mixture (ultraviolet light absorption agent) 2.5%, sebacate mixture (light stabilizer) 1.5%, n-octadecyl propionate (antioxidant) 0.5%, aluminum dihydrogen tripolyphosphate 7.0%, using zirconia and alumina Inorganic coated rutile titanium dioxide R818 (titanium dioxide content 94wt%) 12.0%, barium sulfate 14.6%, zeolite powder 6.0%;

[0043] Component B is curing agent (HDI trimer), and its content...

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Abstract

The invention relates to a dissolvent-free polyurethane weather-proof anticorrosive coating for a storage tank. The coating is composed of a component A and a component B, wherein the component A comprises the following components by weight percentage: 20-60 percent of hydroxide radical, 0.3-1.0 percent of dispersant, 0.5-2.0 percent of antifoamer, 0.2-0.6 percent of leveling agent, 2.0-5.0 percent of dehydrator, 0.5-1.0 percent of anti-settling agent, 0.1-1.0 percent of curing accelerator, 1.0-3.0 percent of ultraviolet absorbefacient, 0.5-2.0 percent of photostabilizer, 0.2-1.0 percent of antioxidant, 5.0-20 percent of aluminum dihydrogen tripolyphosphate, 10-25 percent of titanium dioxide, 10-20 percent of barium sulfate and 4.0-6.0 percent of zeolite power, wherein the component hydroxide radical is polyester polyether polylol obtained by chemically modifying castor oil; the component B is a hexamethylene diisocyanate curing agent; the weight ratio of the component A to the component B is 100:25-100:50. Via the selection of the terminal hydroxyl compound and the curing agent in the component A, bubbles in the anticorrosive coating are reduced. The coating has good anticorrosive performance, and besides, the super-high performance of UV aging resistance and salt and fog resistance is suitable for the outer wall construction of the storage tank.

Description

technical field [0001] The invention relates to a solvent-free polyurethane weather-resistant anti-corrosion coating for storage tanks, belonging to the technical field of oil pipeline anti-corrosion. Background technique [0002] In order to meet the rapid development of the national economy, it is necessary to accelerate the development of large storage tanks to improve my country's oil storage capacity. The 12th Five-Year Period is the peak period for the construction of large-scale oil storage tanks in China. Since the main causes of storage tank accidents are corrosion and leakage, how to improve the anti-corrosion technology level of storage tanks and ensure the safety of large-scale storage tanks must be solved in the process of storage tank construction. an important question. [0003] The coating structure of the outer wall of steel storage tanks at home and abroad is generally epoxy zinc-rich primer + epoxy cloud iron intermediate paint + weather-resistant anti-co...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C09D5/08C08G65/28B05D7/14B05D7/24
Inventor 叶春艳王兆坤张鹏董彬袁欣然
Owner BC P INC CHINA NAT PETROLEUM CORP
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