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Quick-drying high-solid polyurea coating material, and preparation method and application thereof

A high-solid, polyurea technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., to reduce construction time, improve appearance decoration, and improve anti-corrosion performance

Active Publication Date: 2017-12-26
BEIJING BSS CORROSION PROTECTION IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Polyaspartic polyurea coatings have been very successful, however, the problem with these coatings is that they must cure at an acceptable rate to achieve good adhesion to metal substrates and high performance

Method used

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  • Quick-drying high-solid polyurea coating material, and preparation method and application thereof
  • Quick-drying high-solid polyurea coating material, and preparation method and application thereof

Examples

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preparation example Construction

[0068] According to a typical embodiment of the present invention, a method for preparing a fast-drying high-solid polyurea coating is provided. The preparation method includes the following steps: 1) 20 to 45 parts of modified polyaspartic acid ester resin is stirred and 5 to 15 parts of composite anti-rust pigment, 10 to 45 parts of pigments and fillers, and 1 to 5 parts of auxiliary are added. And part of the solvent, grind until the fineness reaches 20 microns, and the temperature reaches 60-65°C; add 0.1-1.5 parts of adhesion promoter and the remaining part of the solvent, and mix well to obtain component A; 2) 15-35 Part of the isocyanate curing agent is component B; 3) before use, component A and component B are mixed to prepare a quick-drying high-solid polyurea coating.

[0069] Preferably, in step 1), a solvent is used to adjust the viscosity of component A.

[0070] According to a typical implementation of the present invention, according to the construction technology,...

Embodiment 1 to 6

[0095] The fast-drying high-solid polyurea coatings in Examples 1 to 6 of the present invention are realized by the following production processes:

[0096] Component A: Add modified polyaspartate resin, add water remover, rheological agent, wetting and dispersing agent, leveling agent, anti-rust pigment and pigment and filler during stirring; grind until the fineness reaches 20 microns, temperature Reach 60-65°C; add light stabilizer, ultraviolet absorber, adhesion promoter and butyl acetate, mix well; adjust viscosity with methoxypropyl acetate.

[0097] B component: polyisocyanate.

[0098] Before use, the A component and the B component were mixed according to the weight ratio shown in Table 1 to prepare the fast-drying high-solid polyurea coating of the present invention.

[0099] The composition, physical parameters and paint film properties of the fast-drying high-solid polyurea coatings provided in Examples 1 to 6 are shown in Table 1.

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Abstract

The invention discloses a quick-drying high-solid polyurea coating material, and a preparation method and application thereof. The quick-drying high-solid polyurea coating material comprises the following materials, in parts by weight: 20-45 parts of modified polyaspartic ester resin, 15-35 parts of isocyanate curing agents, 5-15 parts of composite anti-rust pigment, 10-45 parts of a pigment filler, 1-5 parts of an auxiliary agent and 5-15 parts of a solvent, wherein the modified polyaspartic ester resin is prepared from amino monomers, maleic anhydride and alcohol monomers according to a molar ratio of 1:(1.8-2.3):(3.8-4.9). According to the invention, the above specific components and the component contents of the quick-drying high-solid polyurea coating material match perfectly, thus the quick-drying high-solid polyurea coating material provided by the invention has excellent mechanical properties, corrosion resistant performance and decorative performance, and can obviously improve construction production efficiency, and reduce construction time, energy consumption, VOC emissions and labor costs.

Description

Technical field [0001] The invention relates to the technical field of anticorrosive coatings, in particular to a quick-drying high-solid polyurea coating, its preparation method and application. Background technique [0002] Polyaspartic acid ester is a kind of secondary amine with a special molecular structure. On the molecule, the non-reactive functional groups around the secondary amine group can activate the secondary amine group and the reaction of the secondary amine group with other functional groups has a steric hindrance effect. This steric hindrance can be used to design the reactivity of polyaspartate at the molecular level to obtain polyaspartate-based coatings with different pot life. Compared with secondary amines, the pot life of polyaspartate and isocyanate curing agents is greatly extended, which greatly expands the application range of polyurea coatings. For example, it is applied to the coating and protection of construction machinery like industrial polyureth...

Claims

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Application Information

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IPC IPC(8): C09D175/02C09D5/08
CPCC08K5/32C08K5/47C08K13/02C08K2003/321C08K2003/387C08K2201/014C09D5/084C09D5/086C09D175/02
Inventor 谢静李依璇田东波赵金庆樊艳达何永敬
Owner BEIJING BSS CORROSION PROTECTION IND
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