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Spraying elastic methacrylate coating

A technology of methacrylate and methyl methacrylate, applied in the field of spray-type elastic methyl methacrylate coatings, can solve the problems of high requirements for spraying equipment, limited application of sprayed polyurea, unsuitable construction, etc., so as to shorten the construction period. The effect of excellent time and weather resistance, and short curing time

Inactive Publication Date: 2010-09-01
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of coating can be quickly cured within 10 seconds, and the tensile strength of the resulting film can reach 20MPa, while the elongation can reach 300%-500%, but it requires high spraying equipment and is not suitable for construction. In addition, aromatic isocyanates are used as The raw material will produce yellowing under the sunlight, which will affect the use, while the use of aliphatic isocyanate as the raw material is expensive, which limits the application of spray polyurea

Method used

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  • Spraying elastic methacrylate coating
  • Spraying elastic methacrylate coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Mix 0.7 parts of paraffin, 70 parts of MMA, 10 parts of butyl acrylate, 30 parts of polyurethane acrylic acid prepolymer, and 10 parts of titanium dioxide, and then divide them into two equal parts, and add 1 part of N, N-dimethyl Aniline mixed evenly is the B component, and the other part is the A component. Add 2 parts of C component containing benzoyl peroxide to A component, and mix evenly with the American Graco high-pressure airless sprayer ULTRA395 spray gun to obtain A+C, and combine A+C and B into two groups After metering, heating and pressurizing in the airless spraying equipment with a fixed ratio of 1:1, it is mixed evenly through the spray gun and then sprayed on the substrate, and then cured to obtain elastic MMA coating.

Embodiment 2

[0026] Mix 1 part of paraffin, 50 parts of MMA, 10 parts of butyl acrylate, 50 parts of polyurethane acrylic prepolymer, and 10 parts of titanium dioxide, and then divide it into two equal parts, and add 1 part of N, N-dimethyl P-toluidine mixed evenly is the B component, and the other part is the A component. Add 2 parts of C component containing benzoyl peroxide to A component, and mix evenly with the American Graco high-pressure airless sprayer ULTRA395 spray gun to obtain A+C, and combine A+C and B into two groups After being metered, heated and pressurized in an airless spraying equipment with a fixed ratio of 1:1, it is mixed evenly through a spray gun and then sprayed on the substrate, and then cured to obtain an elastic MMA coating.

Embodiment 3

[0028] Mix 1 part of paraffin, 50 parts of MMA, 20 parts of isooctyl acrylate, 30 parts of polyurethane acrylic acid prepolymer, and 10 parts of carbon black, and then divide it into two equal parts, and add 1 part of N, N-dimethyl The base-p-toluidine is mixed evenly, which is the B component, and the other part is the A component. Add 2 parts of C component containing benzoyl peroxide to A component, and mix evenly with the American Graco high-pressure airless sprayer ULTRA395 spray gun to obtain A+C, and combine A+C and B into two groups After being metered, heated and pressurized in an airless spraying equipment with a fixed ratio of 1:1, it is mixed evenly through a spray gun and then sprayed on the substrate, and then cured to obtain an elastic MMA coating.

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Abstract

The invention provides a spraying elastic methacrylate coating, which consists of three components A, B and C, wherein the component A consists of 20 to 80 weight percent of methyl methacrylate, 10 to 50 weight percent of elastic macromolecular modifier and 5 to 30 weight percent of acrylate monomer; the component B consists of 20 to 80 weight percent of methyl methacrylate, 5 to 50 weight percent of elastic macromolecular modifier, 5 to 30 weight percent of acrylate monomer, 1 to 10 weight percent of filler and 0.5 to 3 weight percent of promoter; and the component C is an initiator which accounts for 1 to 6 percent of the total mass of the coating.

Description

Technical field: [0001] The invention relates to a spray type elastic methyl methacrylate (MMA) paint. Background technique: [0002] Elastic protective film is the latest type developed to meet the needs of long-term protection of the surface of concrete, steel structures and their components after the mature application of advanced technologies such as high-solid coatings and light-curing (UV) coatings. protective material. In the mid-1980s, the United States and Europe took the lead in developing and popularizing it on a large scale. After achieving great success, the technology has been rapidly promoted and developed at home and abroad. [0003] Due to its high strength and high elongation, polyurethane elastomers have developed rapidly in fields such as protective films. One-component polyurethane elastic coatings rely on moisture in the air to cure and form films, which is convenient and environmentally friendly, but requires a certain curing time. It can be passed a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/00
Inventor 田凤兰段文锋谢丽丽常英
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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