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Heavy-duty coating of engineering machinery

A heavy-duty anti-corrosion and coating technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of high price, less successful technology transformation, limited market promotion and application, and achieve excellent performance and improved weather resistance.

Active Publication Date: 2013-01-23
广东四方威凯新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the mid-1970s, the country has paid attention to the research of heavy-duty anti-corrosion coatings for construction machinery, and various types of products have come out one after another, mainly in the second category of epoxy-modified acrylic coatings and polyurethane-modified acrylic coatings. The large state-owned paint factories in Beijing, Tianjin, and Chongqing introduced ICI, BASF, and Kansai Paint's acrylic and fluorocarbon long-term anti-corrosion coating technologies respectively, but the price was high, the market promotion and application were limited, and the technology transformation was not very successful

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Preparation method of organosilicon intermediate prepolymer: Methyltriethoxysilane, dimethyldiethoxysilane, phenyltriethoxysilane monomers with a molar ratio of 1:1.6:1 Mix, add xylene of the same quality as a solvent, adjust the pH value to 3 with 0.1% HCl, add 80% of the fully hydrolyzed water at 70°C, stir, react for 3 hours, then neutralize the reaction product, filter , by-products and part of the solvent were distilled off to obtain an intermediate prepolymer that was stable at room temperature.

[0028] (2) Use the intermediate prepolymer made in the above (1) and 50% solid content, epoxy value 0.18-0.22, bisphenol A epoxy resin reaction of softening point 64-78 ℃, mass ratio 2 : 8, temperature: 150°C, add a mixture of butyl titanate and triphenylphosphine (0.5% of total resin, mass ratio 1:2) as a catalyst, react for 3 hours, and the final product is epoxy resin modified silicone resin , adding an appropriate amount of xylene and cyclohexanone (mass ratio 7...

Embodiment 2

[0041] (1) Preparation method of organosilicon intermediate prepolymer: Methyltriethoxysilane, dimethyldiethoxysilane, phenyltriethoxysilane monomers with a molar ratio of 1:1.6:1 Mix, add xylene of the same quality as a solvent, adjust the pH value to 3 with 0.1% HCl, add 100% water in a fully hydrolyzed amount at 60°C, stir, react for 5 hours, then neutralize the reaction product, filter , by-products and part of the solvent were distilled off to obtain an intermediate prepolymer that was stable at room temperature.

[0042](2) Use the intermediate prepolymer made in the above (1) and 50% solid content, epoxy value 0.18-0.22, bisphenol A epoxy resin reaction of softening point 64-78 ℃, mass ratio 2 : 8, temperature: 135°C, add a mixture of butyl titanate and triphenylphosphine (0.5% of the total resin, mass ratio 1:2) as a catalyst, react for 4 hours, and the final product is epoxy resin modified silicone resin , adding an appropriate amount of xylene and cyclohexanone (mas...

Embodiment 3

[0055] (1) Preparation method of organosilicon intermediate prepolymer: Methyltriethoxysilane, dimethyldiethoxysilane, phenyltriethoxysilane monomers with a molar ratio of 1:1.6:1 Mix, add xylene of the same quality as a solvent, adjust the pH value to 3 with 0.1% HCl, add 90% of the fully hydrolyzed water at 65°C, stir, react for 4 hours, then neutralize the reaction product, filter , by-products and part of the solvent were distilled off to obtain an intermediate prepolymer that was stable at room temperature.

[0056] (2) Use the intermediate prepolymer made in the above (1) and 50% solid content, epoxy value 0.18-0.22, bisphenol A epoxy resin reaction of softening point 64-78 ℃, mass ratio 2 : 8, temperature: 130°C, add a mixture of butyl titanate and triphenylphosphine (0.5% of the total resin, mass ratio 1:2) as a catalyst, react for 5 hours, and the final product is epoxy resin modified silicone resin , adding an appropriate amount of xylene and cyclohexanone (mass rat...

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Abstract

The invention relates to an epoxy-modified organosilicone heavy-duty coating added with nano metal powder. The heavy-duty coating is composed of component A, component B and component C, wherein the component A is the epoxy-modified organosilicone which comprises the following components by mass percent: 25 to 40 % of matrix resin, that is, the epoxy-modified organosilicone, 20 to 40 % of pigment filler and auxiliary agents, and 20 to 40 % of a solvent; The component B is self-made titanium alloy nano powder in an amount of 0.5 to 2 % of the amount of the matrix resin; and the component C is aminosilane in an amount of 10 to 20% of the amount of matrix resin. According to the heavy-duty coating, the epoxy-modified organosilicone solution is prepared through the epoxy resin modification for prepolymer of organosilicone intermediate, the self-made titanium alloy nano powder is used to improve properties such as weather resistance, corrosion resistance, abrasion resistance, high strength and the like, of the heavy-duty coating of engineering machinery, and the aminosilane is used as a curing agent for normal-temperature curing. A cured film can be obtained through placing in an environment with the air humidity of 50% or more for seven days; and the obtained film is good in weather resistance, excellent in corrosion resistance, strong in adhesion and good in mechanical property, and is suitable for the field of the heavy duty of the engineering machinery, especially for the corrosion protection in the sun, salt atmosphere, acid, alkali and other environment.

Description

technical field [0001] The invention relates to a heavy-duty anti-corrosion paint, in particular to a heavy-duty anti-corrosion paint for engineering machinery. technical background [0002] Construction machinery is the machinery that serves the construction of various basic construction projects such as urban and rural areas, railways, highways, port terminals, farmland water conservancy, electric power, metallurgy, mines, sea and air bases. In my country, construction machinery mainly includes: excavation machinery, shovel transportation Machinery, engineering hoisting machinery, road machinery, compaction machinery, piling machinery, reinforced concrete machinery, rock drilling machinery, forklifts, special construction machinery and other 10 categories. The main common construction machinery are: hydraulic excavators, crawler bulldozers, wheel loaders, road rollers, graders, pavers, forklifts and truck cranes. As we all know, construction machinery is a kind of outdoor ...

Claims

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Application Information

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IPC IPC(8): C09D183/06C09D7/12C09D5/10
Inventor 曾显华朱洪江尹荔松方芳
Owner 广东四方威凯新材料有限公司
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