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Highly wear-resistant, weather-resistant and corrosion-resistant coating for locomotives as well as preparation method and application of coating

A corrosion-resistant, locomotive technology, used in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as reducing the protective effect of coatings on metals, difficult-to-adhesion coatings, etc., to achieve stable spray ratio, balanced curing reaction, Strong adhesive effect

Active Publication Date: 2021-11-23
黄山中邦孚而道涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the car body is made of metal materials, and metal materials are difficult to firmly adhere to the paint, thus greatly reducing the protective effect of the paint on the metal

Method used

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  • Highly wear-resistant, weather-resistant and corrosion-resistant coating for locomotives as well as preparation method and application of coating
  • Highly wear-resistant, weather-resistant and corrosion-resistant coating for locomotives as well as preparation method and application of coating
  • Highly wear-resistant, weather-resistant and corrosion-resistant coating for locomotives as well as preparation method and application of coating

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] In one embodiment according to the present invention, the preparation method of the active nano-silica with core-shell structure comprises the following steps: (1) put 100 parts of nano-silicon oxide in absolute ethanol in parts by weight, and ball mill After filtration, continue to ball mill the nano silicon oxide to control the temperature, the temperature is 110-120°C, and the time is 1-5h to obtain pretreated nano silicon oxide; (2) continue to add 10 parts of isocyanate to the pretreated nano silicon oxide, continue ball milling and Control the temperature at 100-110°C for 0.5-2h, then keep ball milling and continue to add butanediamine, the reaction time is 0.5-1h, continue to add dibutyl maleate drop by drop, after the dropwise addition, ball mill for 0.5-1h to get Active nano-silica with core-shell structure.

[0034] In an embodiment according to the present invention, the preparation method of the hyperbranched modified aspartic acid resin comprises the follow...

Embodiment 1

[0052] (1) prepare hyperbranched modified aspartic acid resin:

[0053] (1) In a reaction kettle protected by nitrogen gas, add trichlorosilane ethanol solution with a mass concentration of 10%, add deionized water drop by drop under stirring state, the molar ratio of deionized water to trichlorosilane is 1:3, at temperature React at 75°C for 0.5 hours, then add diisocyanate, and continue to react for 0.5 hours to obtain a pre-reaction solution; (2) water-cooled to control the temperature of the reaction kettle within the range of 15°C, and dropwise in the above-mentioned pre-reaction solution under stirring Add aliphatic primary diamine to end-cap, obtain silicon block branched modified organic diamine reaction solution; (3) Slowly add dialkyl diamine in the above silicon block branched modified organic diamine reaction solution with a titration funnel After the maleic acid ester is added dropwise, the temperature is raised to 90° C. for constant temperature reaction for 10 h...

Embodiment 2

[0060] (1) prepare hyperbranched modified aspartic acid resin:

[0061] (1) In a reaction kettle protected by inert gas, add trichlorosilane ethanol solution with a mass concentration of 30%, add deionized water drop by drop under stirring state, the molar ratio of deionized water to trichlorosilane is 1:3, in React at a temperature of 85°C for 1 hour, then add diisocyanate, and continue the reaction for 1 hour to obtain a pre-reaction solution; (2) water-cooling to control the temperature of the reaction kettle within the range of 20°C, and gradually add in the above-mentioned pre-reaction solution under stirring Add aliphatic primary diamine dropwise to end capping to obtain a silicon block branched modified organic diamine reaction liquid; (3) slowly add dioxane dropwise into the above silicon block branched modified organic diamine reaction liquid with a titration funnel After the dropwise addition of maleic acid ester, the temperature was raised to 100°C for constant temp...

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Abstract

The invention provides a highly wear-resistant, weather-resistant and corrosion-resistant coating for locomotives as well as a preparation method and application of the coating. The highly wear-resistant, weather-resistant and corrosion-resistant coating for the locomotives comprises a component A and a component B. The component A comprises the following components in parts by weight: 20-40 parts of hyperbranched modified asparaginic acid resin, 5-10 parts of polyurethane acrylate, 20-30 parts of polyacrylate, 0.1-1.5 parts of a leveling agent and 0.1-1 part of a defoaming agent, and the component B comprises the following components in parts by weight: 50-80 parts of isocyanate, 10-30 parts of active nano silicon oxide with a core-shell structure and 0.5-1.5 parts of a light stabilizer. The preparation method comprises the following steps: (1) weighing and uniformly mixing the materials in parts by weight to obtain a component A and a component B; and (2) respectively loading the component A and the component B into respective containers according to a volume ratio of 1:1, and conducting sealing and storing. The highly wear-resistant, weather-resistant and corrosion-resistant coating for the locomotives can be used for primer, intermediate paint and finish paint of the locomotive. According to the product, abrasion to equipment is reduced, and the final protection performance of the coating is also guaranteed.

Description

technical field [0001] The invention relates to the field of locomotive paints, in particular to a highly wear-resistant, weather-resistant, and corrosion-resistant paint for locomotives, a preparation method and an application thereof. Background technique [0002] In recent years, cars have become an important part of people's lives. The protective paint on the car mainly protects the surface of the car body and prevents the car body from being corroded by rainwater to prolong the service life of the car. [0003] The role of automotive coatings: (1) Beautify the appearance of the car: the paint film is required to be full and have a good metallic feel; (2) It is convenient for construction: automotive paints are generally multi-layer coatings, because single-layer coatings generally cannot achieve good quality. (3) Excellent mechanical properties: to adapt to the high speed, multiple shocks and strains of automobiles, it is required that the paint film has good adhesion,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/02C09D133/04C09D175/14C09D7/62C09D5/08C08G73/00C08G83/00
CPCC09D175/02C09D7/62C09D5/08C08G73/00C08G83/005C08K2201/011C08L33/04C08L75/14C08K9/10C08K3/36
Inventor 冯刚
Owner 黄山中邦孚而道涂料有限公司
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