Polymethyl methacrylate composite coating and preparation method thereof

A technology of polymethyl methacrylate and composite coatings, applied in coatings and other directions, can solve problems affecting surface adhesion and gloss, complicated construction, etc., and achieve excellent color retention, improved construction efficiency, and high physical and mechanical properties Effect

Active Publication Date: 2013-12-04
中建材苏州防水研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention patent with application number 200910165369.7 discloses a waterproof coating and its preparation method. The two-component coating uses paraffin to isolate the air to eliminate the inhibition of free radical polymerization by oxygen, but the floating of paraffin affects the adhesion and gloss of the surface. When the product is used, it needs to be mixed on site, and it needs to be irradiated by ultraviolet light to trigger free radical reaction. Construction is cumbersome

Method used

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  • Polymethyl methacrylate composite coating and preparation method thereof
  • Polymethyl methacrylate composite coating and preparation method thereof
  • Polymethyl methacrylate composite coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In a closed reaction kettle, blow dry nitrogen, add 15 parts of methyl methacrylate (MMA) and 1 part of benzoyl peroxide, stir until completely dissolved, then add 50 parts of flexible polyurethane unsaturated resin (molecular weight is about 8000 ), 2 parts of diallyl phthalate, 0.5 parts of p-toluenesulfonyl isocyanate, 1 part of diphenylbenzofuran and 30 parts of titanium dioxide (1250 mesh) were stirred and dispersed evenly, and finally 0.5 parts of reducing agent were added Capsules, mixed evenly, discharged under the protection of nitrogen, sealed and packaged to obtain the polymethyl methacrylate composite coating of this embodiment.

[0036] The reducing agent in the reducing agent capsule in this embodiment is N,N-dimethyl-p-toluidine.

Embodiment 2

[0038] In a closed reactor, blow dry nitrogen, add 30 parts of methyl methacrylate (MMA) and 3 parts of benzoyl peroxide, stir until completely dissolved, then add 40 parts of flexible polyurethane unsaturated resin (molecular weight is about 6000 ), 4 parts of dienyl phthalate, 1 part of p-toluenesulfonyl isocyanate, 1 part of triphenylphosphine and 20 parts of titanium dioxide (1250 mesh) were stirred and dispersed evenly, and finally 1 part of reducing agent capsule was added, Mix evenly, discharge and seal the package under nitrogen protection to obtain the polymethyl methacrylate composite coating of this embodiment.

[0039] The reducing agent in the reducing agent capsule in this embodiment is N,N-dimethyl-p-toluidine.

Embodiment 3

[0041] In a closed reactor, blow dry nitrogen, add 35 parts of methyl methacrylate (MMA) and 8 parts of benzoyl peroxide, stir until completely dissolved, then add 30 parts of flexible polyurethane unsaturated resin (molecular weight is about 4000 ), 2 parts of diallyl phthalate, 0.5 parts of p-toluenesulfonyl isocyanate, 1 part of diphenylbenzofuran and 23 parts of titanium dioxide (2500 mesh) were stirred and dispersed evenly, and finally 0.5 parts of reducing agent were added Capsules, mixed evenly, discharged under the protection of nitrogen, sealed and packaged to obtain the polymethyl methacrylate composite coating of this embodiment.

[0042] The reducing agent in the reducing agent capsule in this embodiment is N,N-dimethyl-p-toluidine.

[0043] In the above examples, the methyl methacrylate used is an industrial-grade raw material, and the viscosity of the monomer is low. When the composite coating is composed of polyurethane resin, the viscosity of the entire c...

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Abstract

The invention relates to a polymethyl methacrylate composite coating and a preparation method thereof. The raw material formula of the composite coating comprises the following components in parts by weight: 10-35 parts of polymethyl methacrylate, 30-60 parts of unsaturated polyurethane resin, 1-5 parts of crosslinking agent, 1-10 parts of oxidizing agent, 0.5-2 parts of reducing agent capsules, 0.1-2 parts of oxygen scavenger, 0.1-1 part of dewatering agent and 10-30 parts of inorganic powder, wherein the reducing agent capsules are composed of a reducing agent core material and a hydrophilic colloid capsule wall material which is used for covering the surface of the core material and breaks when encountering water. The composite coating provided by the invention is triggered to polymerize and form a film through an oxidation reduction triggering system and can solidify at a normal temperature; the oxidizing agent and the reducing agent can coexist through the capsulation of the reducing agent under the drying condition; further the single-component packaging is realized; and the trouble that the double-component coating needs to be mixed and prepared on the scene during construction is avoided.

Description

technical field [0001] The invention relates to protective coatings in the construction field, in particular to a polymethyl methacrylate composite coating and a preparation method thereof. Background technique [0002] Over the past 40 years, countries around the world have carried out a large number of researches and applications on acrylic paints, making acrylic resin paints another class of highly versatile synthetic resin paints after alkyd resin paints. In addition to being widely used in manufacturing fields such as automobiles, aircrafts, furniture, and machinery, acrylic resin coatings have also been widely recognized for their excellent performance, convenient construction, and environmental friendliness in the interior and exterior wall decoration of buildings. Polymethyl methacrylate (PMMA) coating is a material with excellent physical and mechanical properties. In the field of special coatings or functional coatings, such as anti-fouling and anti-corrosion coati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/08C09D7/12C08G18/67C08G18/48
Inventor 沈春林褚建军康杰分王玉峰杨炳元杨乃浩
Owner 中建材苏州防水研究院有限公司
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