A kind of biological protein/nano rust inhibitor/polyurethane composite coating and preparation method

A biological protein and composite coating technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve the problems of accelerating the corrosion of metal substrates, destroying the adhesion and impermeability of coatings, and achieving enhanced barrier properties, The effect of excellent mechanical properties and excellent flexibility

Active Publication Date: 2022-07-05
厦门昕钢防腐工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the roughness is too large, there are too many micropores on the surface, and it is difficult for the coating to penetrate into the micropores to form micropores, thereby destroying the adhesion and impermeability of the coating and accelerating the corrosion of the metal substrate.

Method used

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  • A kind of biological protein/nano rust inhibitor/polyurethane composite coating and preparation method
  • A kind of biological protein/nano rust inhibitor/polyurethane composite coating and preparation method
  • A kind of biological protein/nano rust inhibitor/polyurethane composite coating and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Take 56 parts of hyperbranched polyurethane resin in a beaker, add 2 parts of film-forming aid propylene glycol ethyl ether successively under stirring; 0.5 parts of catalyst BA-120; 8 parts of cross-linking agent hydroxyethyl methacrylate; n-butyl ester 30 parts, high-speed dispersion for 30 minutes, stirring speed 1000rpm;

[0033] 2) 1 part of biological protein (chitosan) and 0.5 part of nano-palladium (particle size: 10 nm) were sequentially added to the solution obtained in 1), and dispersed at high speed for 10 minutes;

[0034] 3) Coat the sample obtained in 2) on the surface of a dry and rust-free 304 stainless steel plate by brushing, with a coating thickness of 50um, and dry it naturally.

Embodiment 2

[0036] 1) Take 56 parts of hyperbranched polyurethane resin in a beaker, add 1.5 parts of film-forming aid propylene glycol ethyl ether successively under stirring; 120.5 parts of catalyst BA-1; 8.5 parts of crosslinking agent hydroxyethyl methacrylate; n-butyl ester 30 parts, high-speed dispersion for 30 minutes, stirring speed 1000rpm;

[0037] 2) 1 part of biological protein (mussel adhesion protein) and 0.5 part of nano-gold (particle size 50nm) were added successively in 1) the obtained solution, and dispersed at high speed for 10 minutes;

[0038] 3) Coat the sample obtained in 2) on the surface of a dry and rust-free 304 stainless steel plate by brushing, with a coating thickness of 50um, and dry it naturally.

Embodiment 3

[0040] 1) Take 56 parts of hyperbranched polyurethane resin in a beaker, add 1.5 parts of film-forming aid propylene glycol ethyl ether successively under stirring; 120.5 parts of catalyst BA-1; 8.5 parts of crosslinking agent hydroxyethyl methacrylate; n-butyl ester 30 parts, high-speed dispersion for 30 minutes, stirring speed 1000rpm;

[0041] 2) 1 part of biological protein (mussel adhesion protein) and 0.5 part of nano-silver (particle size 80nm) were added successively in 1) the obtained solution, and dispersed at high speed for 10 minutes;

[0042] 3) Coat the sample obtained in 2) on the surface of a dry and rust-free 304 stainless steel plate by brushing, with a coating thickness of 50um, and dry it naturally.

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Abstract

The invention discloses a biological protein / nano rust inhibitor / polyurethane composite coating and a preparation method thereof. In parts by weight, the composite coating comprises the following components: a. 40-60 parts of hyperbranched solvent-free low-viscosity structural resin , b. 1-2 parts of film-forming aids, c. 0.1-1 parts of catalysts, d. 1-10 parts of cross-linking agents, e. 10-30 parts of solvents, f. 1-5 parts of biological proteins, g. Rust inhibitor 0.1-1 part. The composite coating has the characteristics of excellent adhesion to the substrate, good salt spray resistance, good weather resistance, strong wear resistance and temperature change resistance through appropriate component ratio and supplemented by appropriate production process. Moreover, it can significantly promote the self-passivation of the metal and the self-healing properties of the coating, and strengthen the corrosion resistance and ultraviolet aging resistance of the metal.

Description

technical field [0001] The invention relates to the technical field of composite materials and industrial anticorrosion, in particular to a biological protein / nano rust inhibitor / polyurethane composite coating and a preparation method. Background technique [0002] Good adhesion between organic coatings and metals is the premise for organic coatings to give full play to their anti-corrosion properties. The adhesion between the coating and the metal substrate mainly comes from three aspects: mechanical occlusion, physical adsorption and chemical reaction. Mechanical occlusion is due to the fact that there are usually pits and convexities on the metal surface, with a certain degree of roughness, so that the organic coating can penetrate into the pits and gaps on the metal surface, and after the coating is cured, it is connected with the metal substrate by mechanical occlusion. . Physical adsorption is the connection between the organic coating and the surface of the metal su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D5/08C09D7/65
CPCC09D175/04C09D5/08C09D7/65C09D7/67C08K2003/0831C08K2003/0806C08K2201/011C08L5/08C08K3/08C08L89/00Y02A50/20
Inventor 林理文林昌健
Owner 厦门昕钢防腐工程科技有限公司
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