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Preparation method of scratch-resistant polyurethane matt black finish for woodware

A polyurethane, anti-scratch technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems that trouble manufacturers and engineers and technicians, fingerprints are not easy to disappear, not scratch-resistant, etc., to achieve good interlayer adhesion, Improve scratch resistance, no ghosting effect

Active Publication Date: 2013-04-03
UNION FOSHAN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Today's huge wood paint market has higher and higher requirements for paint products. Especially wood polyurethane (PU) paint has excellent comprehensive performance and is widely used by consumers. However, the product has many shortcomings, such as whitening, foaming, and peeling. layer, not resistant to scratches, ghosting, fingerprints are not easy to disappear, etc.
These problems bother manufacturers and engineers and technicians, and some problems have not been solved for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] According to the formula weight ratio, add 25 parts of mixed solvent into the dispersion tank, add 50 parts of 60% solid alkyd resin, add Stir 9 parts of carbon black dispersant evenly, slowly add 15 parts of special 4 carbon black, then disperse at a high speed of 1000~1200r / min for 45~60min, and then grind 4~6 times in a horizontal sand mill until the color paste The fineness particle size reaches the requirement of ≤10μ, and it is transferred to the paint mixing tank for defoaming and viscosity adjustment, and is filtered and packaged to obtain solvent-based carbon black slurry.

Embodiment 2

[0026] According to the formula weight ratio, add 13 parts of mixed solvent into the dispersion tank, add 50 parts of alkyd resin with 60% solid content, stir evenly, then add 4 parts of matting powder, 0.5 parts of dispersant, disperse at high speed for 30-40 minutes, and stir at low speed Add 30 parts of carbon black slurry, 0.3 parts of titanate-modified silicone chelating leveling agent, 0.2 parts of modified siloxane defoamer, and 2 parts of polyamide wax, stir and pass the test, filter and pack to obtain Scratch-resistant polyurethane wood matt black finish nail component.

Embodiment 3

[0028] Add 40 parts of TDI / TMP adduct, 30 parts of HDI trimer, and 30 parts of mixed solvent into the dispersion tank and stir evenly. After passing the test, filter and pack to prepare the second component of anti-scratch polyurethane woodware matte black finish .

[0029] Mix the paint according to the ratio of component A: component B = 1:0.5, and add thinner to adjust the viscosity to be brushable.

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PUM

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Abstract

The invention relates to a preparation method of a scratch-resistant polyurethane matt black finish for woodware. The scratch-resistant polyurethane matt black finish comprises a resin paint component A and a curing agent component B in the weight ratio of 1: 0.5, wherein the resin paint component A comprises alkyd resin, extinction powder, a dispersing agent, carbon black paste, a modifying flatting agent, an antifoaming agent, an anti-settling agent and a solvent; and the curing agent component B comprises a TDI-HDI (Toluene Diisocynate-Hexamethylene Diisocyanate) mixed tripolymer or a TDI / TMP (Trimethylolpropane) affixture, an HDI tripolymer and a solvent. The scratch-resistant double-component polyurethane matt black finish for woodware, prepared by the preparation method provided by the invention, brings no precipitate during being stored, is high in solidity, low in viscosity and excellent in leveling property; and the filming can be realized at one time, and the film is thick, free from sagging, and soft, full, fine, smooth, slippery in hand feel, shows alternate kindness with severity, is given the effect of full decoration like a mirror plane, brings a graceful and comfortable feel, and is adapted to modern aesthetic view and widely popular with the market and customers. The scratch-resistant polyurethane matt black finish is widely applied to protective decoration of surfaces of products such as the woodware, metals and plastics.

Description

technical field [0001] The invention relates to a preparation method of a two-component polyurethane wood matt black finish, in particular to an anti-scratch polyurethane wood matt black finish suitable for various types of wood. Background technique [0002] With the improvement of people's material and cultural living standards, consumers have higher and higher requirements for the coating effect of furniture, which has led to the rapid growth of domestic wood coatings. The coating effect of the furniture surface will directly affect consumers' choice of furniture, and matt wood coatings occupy a large market share in the furniture coating market. Today's huge wood paint market has higher and higher requirements for paint products. Especially wood polyurethane (PU) paint has excellent comprehensive performance and is widely used by consumers. However, the product has many shortcomings, such as whitening, foaming, and peeling. layer, not resistant to scratches, ghosting, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/12
Inventor 许钧强李泽刚康伦国欧永杰姚东生
Owner UNION FOSHAN CHEM
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