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Polyurethane paint applied to woodworking and application thereof

A polyurethane paint and wood processing technology, applied in the field of polyurethane paint, can solve the problems of yellowing of TDI polyurethane paint film, and achieve the effect of low cost, simple operation process and excellent effect

Inactive Publication Date: 2012-06-20
GUANGDONG LANYANG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a kind of polyurethane paint used in wood processing and its application, aiming to solve the residual bleaching agent peroxide on the existing bleached wood, so that spraying on the bleached Yellowing problem of TDI type polyurethane paint film on furniture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0041] The preparation method of the polyurethane paint is as follows: add the resin and organic solvent in component A into the dispersion tank at a medium speed (1500-3000 rpm) to disperse and stir evenly for 5-10 minutes, then add talcum powder and stearic acid Zinc is dispersed at high speed (3000~4000 rpm) for 5~10 minutes, filtered with 100 mesh, and individually packaged. Put the curing agent and ester solvent of component B into the dispersing tank in sequence at low speed (500~1500 rpm) for dispersing and stirring for 15~25 minutes, stir evenly, filter with 300 mesh, and pack independently. Put each component in component C into the dispersing tank at low speed (200~500 rpm) and disperse for 5~10 minutes, filter with 150 mesh, and pack independently. These three components are packaged separately.

[0042] The polyurethane paint described above can be applied after mixing the three components A, B, and C in a ratio of 1:0.1~0.8:0.1~1, and can be sprayed or brushed on...

Embodiment 1

[0045] By weight percentage, the composition of the polyurethane paint of the present embodiment is as follows:

[0046] Component A:

[0047] Alkyd 35%

[0048] Xylene 20%

[0049] Butyl ester 15%

[0050] Cyclohexanone 10%

[0051] Talc 15%

[0052] Zinc Stearate 5%

[0053] Component B:

[0054] HDI trimer 60%

[0055] Butyl ester 40%

[0056] C component:

[0057] Xylene 50%

[0058] Butyl acetate 20%

[0059] PMA 20%

[0060] Cyclohexanone 10%

[0061] According to the above preparation method, three components A, B and C are prepared. When using, mix the three components of A, B, and C into the polyurethane paint in a ratio of 1:0.1:1 (the prepared polyurethane paint should be used up within 4 hours). During construction, spray or brush the above-mentioned polyurethane paint 1 to 2 times on the wood surface, and polish it 3 to 4 hours after the polyurethane primer dries, and then spray other conventional polyurethane wood paint on it, and the paint film wi...

Embodiment 2

[0063] By weight percentage, the composition of the polyurethane paint of the present embodiment is as follows:

[0064] Component A:

[0065] Alkyd 30%

[0066] Xylene 18%

[0067] Butyl ester 15%

[0068] Cyclohexanone 10%

[0069] Zinc Stearate 4%

[0070] Talc 23%

[0071] Component B:

[0072] HDI trimer 40%

[0073] Butyl ester 60 %

[0074] C component:

[0075] Xylene 45%

[0076] Butyl fat 30%

[0077] PMA 15%

[0078] Cyclohexanone 10%

[0079] According to the above preparation method, three components A, B and C are prepared. When using, the three components of A, B, and C are formulated into the polyurethane paint according to the ratio of 1:0.1:0.1 (the prepared polyurethane paint should be used up within 4 hours). During construction, spray or brush the above-mentioned polyurethane paint 1 to 2 times on the wood surface, and polish it 3 to 4 hours after the polyurethane primer dries, and then spray other conventional polyurethane wood paint on it...

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Abstract

The invention discloses polyurethane paint applied to woodworking and application thereof. The polyurethane paint is used for preventing a paint film of conventional polyurethane paint sprayed on a bleached wooden ware from being yellowed. The polyurethane paint consists of components A, B and C. When the polyurethane paint is in use, the components A, B and C are mixed according to a certain ratio. The component A consists of 30 to 70 percent of hydroxy-containing alkyd resin or acrylic resin, 29 to 45 percent of organic solvent, 1 to 7 percent of zinc stearate and 0 to 18 percent of talcum powder; the component B consists of 20 to 80 percent of isocyanate curing agent and 20 to 80 percent of esters solvent; and the component C is diluent and mainly consists of one or more of an esters solvent, an arene solvent or a ketones solvent. The polyurethane primer is used on a high-end bleached furniture, is used as a primer of the bleached wooden ware and can be used for ensuring the paint film of the conventional polyurethane paint sprayed on a bleached wooden ware not to be yellowed.

Description

technical field [0001] The invention relates to the field of wood processing, in particular to a polyurethane paint used in wood processing and its application. Background technique [0002] High-grade woodware, especially light-colored woodware, is to be used to make beautiful and generous wooden furniture, and the color of the wood used must be white and consistent. However, in actual production, not only are the colors of different woods very different, but even the same wood will have "black water lines" and black markings, etc., resulting in different colors of furniture, etc., which will affect the appearance and lead to poor sales. Affect benefits. [0003] In order to keep the color of wood in different shades consistent, the wood is usually bleached with bleach. Generally speaking, due to the low decolorization ability and high price of reduction bleaching agents, oxidative bleaching agents such as hydrogen peroxide and sodium chlorite are often used in industry. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D175/06
Inventor 肖亚亮叶义英
Owner GUANGDONG LANYANG SCI & TECH
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