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A kind of polyurea paint, coating and preparation method thereof

A polyurea and coating technology, applied in the field of coatings, can solve the problems of insufficient hydrophobicity, slow reaction weather resistance, poor color retention, etc., and achieve the effect of increasing gloss and color retention.

Active Publication Date: 2022-03-15
SUN YAT SEN UNIV
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Problems solved by technology

[0004] Polyaspartic ester coating is a kind of aliphatic, slow response, high weather resistance and high performance coating developed in the field of polyurea in recent years. It is called the third generation polyurea, but the polyurea currently on the market Aspartate coatings have disadvantages such as poor color retention, fast reaction speed, and insufficient hydrophobicity

Method used

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  • A kind of polyurea paint, coating and preparation method thereof
  • A kind of polyurea paint, coating and preparation method thereof
  • A kind of polyurea paint, coating and preparation method thereof

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preparation example Construction

[0034] After carrying out component weighing according to table 1 and table 2, the preparation method of polyurea coating described in embodiment, comprises the steps:

[0035] (1) Mix the A component uniformly, and add it to the uniformly mixed B component to obtain the polyurea coating;

[0036] (2) After uniformly mixing the polyurea coating obtained in step (1), spray, manually brush or roll coat it on the metal within 90 minutes to obtain the polyurea coating.

[0037] Wherein, in component A, the preparation method of the organofluorosilicon-modified polyaspartate resin comprises the following steps:

[0038] (1) After mixing polyaspartic acid ester resin, γ-aminopropyltrialkoxysilane and trifluoropropylmethylcyclotrisiloxane, pass inert gas, after 5min, heat up to 55°C, Diethyl maleate was added dropwise with stirring to obtain a mixture;

[0039] (2) Heat the mixture for 10 hours, the heat preservation temperature is 55° C., and obtain the organofluorosilicon-modifie...

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Abstract

The invention discloses a polyurea coating, a coating and a preparation method thereof, and relates to the technical field of coatings. The polyurea coating includes component A, which is a mixture of resins, pigments and fillers, and additives, and includes the following components in parts by weight: organofluorosilicon modified polyaspartic acid ester resin 60‑90 parts, 20-40 parts of pigments and fillers and 1-5 parts of auxiliary agents; wherein, the preparation method of the organofluorosilicon modified polyaspartic acid ester resin comprises the following steps: (1) adding polyaspartic acid ester After mixing resin, γ-aminopropyltrialkoxysilane and trifluoropropylmethylcyclotrisiloxane, pass inert gas, after 5-10min, heat up to 50-60°C, stir and add maleic acid dropwise diethyl ester to obtain a mixture; (2) heat the mixture to react for 8-16h, and obtain the organofluorosilicon-modified polyaspartic acid resin after cooling.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a polyurea coating, a coating and a preparation method thereof. Background technique [0002] Waterproof coating refers to a kind of coating that the coating film formed by coating can prevent rainwater or groundwater from seeping. At present, there are two types of waterproof materials on the market: one is polyurethane waterproof coating, but when using this coating, it is generally diluted with organic solvents such as toluene and xylene, so it is also toxic; the other is polymer Cement-based waterproof coating, which is composed of emulsions synthesized by various water-based polymers and high-quality cement mixed with various additives. The flexibility of the polymer (resin) and the rigidity of the cement are integrated, making it excellent in impermeability and stability. However, the current polymer cement-based coatings generally have poor mechanical properties and poor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C09D7/61C09D5/08
CPCC09D175/02C09D7/61C09D5/08C08K2003/2241C08K3/22C08K3/346C08K3/34
Inventor 李伟华刘睿曹文凯
Owner SUN YAT SEN UNIV
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