Water-based polyurethane composite coating

A water-based polyurethane and composite coating technology, applied in the field of coatings and paints, can solve the problems of easy aging of coating film elasticity, cracking of walls, affecting the appearance of buildings, etc., to achieve the effect of good water resistance and mechanical properties, and strengthening the scope of application

Inactive Publication Date: 2014-03-19
苏州瑞邦塑胶有限公司
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Problems solved by technology

The main disadvantage of this kind of coating is that the elasticity of the coating film is easy to age, which leads to a decrease in the elongation rate, and cannot effectively protect the strength of the bottom layer of t

Method used

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  • Water-based polyurethane composite coating

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Embodiment Construction

[0015] The present invention will be described in further detail below.

[0016] A water-based polyurethane composite coating, characterized in that the coating is made of the following raw materials in parts by weight, 40-60 parts of water-based hydroxyl-containing polyacrylate dispersion, 12-25 parts of polyacrylic acid, 20-30 parts of polyisocyanate, 30-40 parts of crosslinking agent, 10-15 parts of filler, 10-15 parts of titanium dioxide, 80-100 parts of water, 2-5 parts of polyisocyanate curing agent, 1-2 parts of N,N-dimethylethanolamine, auxiliary 0.2-0.5 parts of solvent, 1-2 parts of antifreeze, 0.2-0.5 parts of wetting agent, 0.2-0.5 parts of defoamer, 0.1-0.3 parts of thickener, 0.1-0.3 parts of wetting agent, 1-2 parts of preservative Parts, pH adjuster.

[0017] The titanium dioxide is rutile titanium dioxide.

[0018] Described antifreeze adopts propylene glycol.

[0019] The thickener adopts the ethoxylated polyurethane water-soluble thickener modified by hyd...

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Abstract

A water-based polyurethane composite coating is characterized in that the coating is prepared from the following raw materials in parts by weight: 40-60 parts of a water-based hydroxyl-containing polyacrylate dispersion body, 12-25 parts of polypropylene acid, 20-30 parts of polyisocyanate, 30-40 parts of a cross-linking agent, 10-15 parts of a filling material, 10-15 parts of titanium dioxide, 80-100 parts of water, 2-5 parts of a polyisocyanate curing agent, 1-2 parts of N,N-dimethyl ethanolamine, 0.2-0.5 part of a co-solvent, 1-2 parts of an antifreeze agent, 0.2-0.5 part of a wetting agent, 0.2-0.5 part of a defoaming agent, 0.1-0.3 part of a thickening agent, 0.1-0.3 part of the wetting agent, 1-2 parts of an antiseptic agent, and a pH value regulator.

Description

technical field [0001] The invention belongs to the technical field of coatings and paints, in particular to a water-based polyurethane composite coating. Background technique [0002] Polyurethane coating has many excellent properties, such as strong adhesion, good wear resistance, adjustable elasticity, excellent acid resistance, alkali resistance, high and low temperature resistance, etc., so it is widely used in national defense, construction, chemical industry, vehicles, wood, aircraft etc. have been widely used. At present, the annual output of polyurethane coatings in my country is close to 800,000 tons, mainly solvent-based two-component polyurethane coatings. However, with the restrictions on the emission of volatile organic compounds (VOC) and harmful air pollutants (HAP) from traditional solvent-based coatings, it is imperative to develop high-performance water-based polyurethane coatings. Water-based polyurethane coatings use water as the main dispersion medium...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12C08G18/62
Inventor 吴兵
Owner 苏州瑞邦塑胶有限公司
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