Coating for melamine veneer cabinet and coating method thereof

A melamine and skin-coating technology, which is applied to polyester coatings, devices for coating liquid on the surface, coatings, etc., can solve problems such as poor adhesion, unreachable hardness, and easy yellowing of the coating, and achieve excellent durability. Yellowing performance, enhanced adhesion, and improved adhesion

Active Publication Date: 2020-08-07
SHANGHAI DABAO CHEM PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Wherein, since melamine is an inert material, and a release agent is added during the manufacture of melamine boards, it is difficult for the paint to be applied on the surface of the melamine skinned cabinets. Therefore, the existing coatings for melamine skinned cabinets have the following defects: The coating on the surface of melamine-coated cabinets is prone to yellowing, poor adhesion, poor adhesion, insufficient drying, and hardness that cannot meet the standard requirements of cabinets, etc.

Method used

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  • Coating for melamine veneer cabinet and coating method thereof
  • Coating for melamine veneer cabinet and coating method thereof
  • Coating for melamine veneer cabinet and coating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] This embodiment provides a paint for melamine skinned cabinets, including a primer, a white primer, a color trimming topcoat, and a clear topcoat, which are sequentially applied from bottom to top on the surface of the melamine skinned cabinetry, and the primer and the color trimming topcoat They are all two-component acrylic polyurethane paints; among them, the primer and color-fixing topcoat can be purchased or self-made.

[0054] The primer and color-fixing topcoat in this embodiment are both self-made two-component acrylic polyurethane paints according to conventional preparation methods, and the specific raw materials are as follows:

[0055] The primer consists of the following raw materials in parts by weight: 40-60 parts of hydroxyl acrylic resin I, 1-10 parts of cellulose ester I, 40-60 parts of solvent I, 0.01-0.05 parts of leveling agent I, 0.05-0.2 Parts of drying accelerator I, 0.15-1 parts of auxiliary I, 40-60 parts of polyisocyanate I, 40-60 parts of diluent ...

Embodiment 2-5

[0089] The raw material composition and preparation method of the white primer of Examples 2-5 are basically the same as those of Example 1, and the difference lies in:

[0090] Table 1 White primer ratio of Example 2-5

[0091]

[0092]

[0093] Among them, the unsaturated polyester resin of Example 2 has a styrene content of 23% and a viscosity of 1700 CPS. The unsaturated polyester resin of Example 3 has a styrene content of 25% and a viscosity of 1600 CPS. The unsaturated polyester resin of Example 4 has a styrene content of 21% and a viscosity of 2000 CPS. The unsaturated polyester resin of Example 5 has a styrene content of 21% and a viscosity of 2000 CPS.

Embodiment 6-9

[0095] The raw material composition and preparation method of the clear topcoat of Examples 6-9 are basically the same as those of Example 1, and the difference lies in:

[0096] Table 2 The ratio of clear topcoats in Examples 6-9

[0097]

[0098]

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Abstract

The invention provides a coating for a melamine veneer cabinet and a coating method thereof, the coating comprises a primer, a white primer, a color repairing finish paint and a clear finish paint, and the primer and the color repairing finish paint are both two-component acrylic polyurethane paint; the white primer is prepared from unsaturated polyester resin, low-acid-value modified short-oil alkyd resin, a styrene monomer, sericite powder, quartz powder, talcum powder, calcined kaolin, a thixotropic agent, titanium dioxide, an auxiliary A, an accelerant and an initiator; the varnish is composed of a component A and a component B according to a weight ratio of 1:0.6-0.8. the component A is prepared from high-acid-value fatty acid modified short-oil alkyd resin, high-hydroxyl-value fattyacid modified short-oil alkyd resin, a solvent, a leveling agent b, an antifoaming agent b and an auxiliary B; and the component B is composed of aliphatic polyisocyanate, a diluent and a dehydratingagent. The integral paint film of the coating has excellent adhesive force, adherence, yellowing resistance and hardness, and is especially suitable for melamine veneer cabinets.

Description

Technical field [0001] The invention relates to the technical field of primers for melamine laminated cabinets, in particular to a paint for melamine laminated cabinets and a coating method thereof. Background technique [0002] Melamine leather cabinets are popular among the public because of their low price and wear resistance. Among them, the main material of melamine laminated cabinets is melamine board. The melamine board is made by impregnating special laminated paper with melamine resin, drying and curing, and then paving it on the surface of the substrate such as particleboard, medium density fiberboard or hard fiberboard. Made of man-made panels. [0003] Among them, because melamine is an inert material, and a release agent is added during the manufacturing process of melamine panels, it is difficult to coat the surface of melamine-covered cabinets. Therefore, the existing coatings for melamine-covered cabinets have the following defects: The coating on the surface of m...

Claims

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Application Information

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IPC IPC(8): C09D167/06C09D167/08C09D7/61C09D7/63B05D7/24B05D7/26B05D5/06
CPCB05D5/061B05D7/24B05D7/26B05D7/584B05D7/586C08K2003/2241C08L2205/02C08L2205/025C09D5/002C09D167/06C09D167/08C09D7/61C09D7/63C08L67/08C08K13/02C08K3/34C08K3/36C08K3/346C08K3/22C08K5/098C08K5/34924
Inventor 古子杰王刚唐伟峰胡飞肖云峰阮英弟梅平
Owner SHANGHAI DABAO CHEM PROD
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