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A kind of wear-resistant polyurea coating and its preparation method and application

A coating and polyurea technology, applied in the field of wear-resistant polyurea coating and its preparation, can solve the problems of easy cracking or peeling of the coating film, achieve simple construction process, improve artificial weathering resistance and wear resistance, and reduce chromatic aberration Effect

Active Publication Date: 2021-12-07
SHENZHEN CAITIAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the problem that the two-component polyurethane wear-resistant coating is easy to crack or peel off during use, the application provides a wear-resistant polyurea coating and its preparation method and application

Method used

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  • A kind of wear-resistant polyurea coating and its preparation method and application
  • A kind of wear-resistant polyurea coating and its preparation method and application
  • A kind of wear-resistant polyurea coating and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Examples 1-23 provide a wear-resistant polyurea coating, which will be described with example in Example 1.

[0042] Example 1 A wear-resistant polyurea coating provided made by:

[0043] S1: 5 g of aldone resin, 5 g of dimethyl carbonate, 1 g dispersing agent, 50g pigment, 0.1 g of organometallic salts, dispersed for 60min, dispersion of 60 min, and ground to the SG405 three-roller grinder to a fineness of 25 μm, filtered, out Abstract, a component;

[0044] S2: Mix the A component, aliphatic polyisocyanate and rigida powder by mass of 1.5: 4: 2.5 to obtain wear-resistant polyurea coatings;

[0045] Among them, the grade of the aldone resin is KT-80 (hydroxyl value ≥ 60 mgkOH / g);

[0046] Dimethyl carbonate is an industrial grade carbonate dimethyl (CAS: 616-38-6);

[0047] The dispersant is a dispersant 5040;

[0048] The pigment is from anatase type titanium white powder BA01-4, carbon black MA-11 (92m specific surface area) 2 / g, DBP absorption is 64cm 3 / 100g), 501...

Embodiment 6

[0056] Example 6, with Example 5, the difference is only that the dibutyltin HG-0111 of Dihuoenuate is replaced with octanate t-9 (CAS: 301-10-0).

Embodiment 7

[0057] Example 7, with Example 5, the difference is only: the cryop powder W7 is replaced with a diamond micropowder W14.

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Abstract

The application relates to the field of coatings, in particular to a wear-resistant polyurea coating and its preparation method and application. The wear-resistant polyurea coating comprises A component, B component and C component, and the mass ratio of described A component, B component and C component is (1.5-2.5):(4-6):(2.5- 3.5), the C component is emery powder and / or corundum powder, by weight, the preparation raw materials of the A component include 5-20 parts of aldehyde and ketone resin, 5-15 parts of dimethyl carbonate, 50 parts of pigment -70 parts, 1-5 parts of dispersant, 0.1-0.5 parts of organic metal salt; the B component is aliphatic polyisocyanate. This application uses aliphatic polyisocyanate to react with moisture in the air to produce amino groups, and the amino group reacts with aliphatic polyisocyanate to form a polyurea cured paint film. The crosslinking density of polyurea increases, which improves the artificial weathering resistance and aging resistance of the coating. abrasion resistance. The wear-resistant polyurea coating prepared by the application has simple construction procedures, low requirements on the construction environment, and no cracking or peeling during use.

Description

Technical field [0001] The present application relates to the field of coatings, and more particularly to a wear-resistant polyurea coating and a preparation method thereof. Background technique [0002] With the development of modern science and technology, artificial satellite, spacecraft, high-speed train, turbine of the motor turbine, the shoe propeller, the blade of the ship, the ship's deck, the floor, road markings, etc. The high-speed airflow, sandstone and water flow scouring, mechanical force, material wear is quite serious. Wear-resistant coatings are a type of new functional coating with special functions, with better wear resistance, improve material and mechanical equipment wear resistance, hardness, and service life. [0003] At present, the common wear-resistant coatings are two-component polyurethane coatings, isocyanate prepolymers, and hydroxyl hydroxyl resin, the hydroxyl resin is directly cured to form polyurethane, which has good mechanical properties, high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C09D161/02C09D7/61C09D7/63
CPCC08K2003/2227C08K2003/2241C09D175/02C09D7/61C09D7/63C08L61/02C08K3/22C08K3/04C08K5/42C08K3/34C08K3/24C08K13/02C08K5/109
Inventor 聂朝阳林培雄
Owner SHENZHEN CAITIAN CHEM