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White waterborne wood base coat for medium density fiberboard and preparation technology thereof

A technology of white primer and MDF, applied in coating and other directions, to achieve the effect of improving utilization rate, reducing environmental pollution and good sandability

Inactive Publication Date: 2011-02-16
ZHEJIANG FEIDA ZHONGKE FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing water-based wood white primers have g

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Density board edge banding water-based wood white primer is composed of slurry, resin and additives, the slurry includes water, dispersant, slurry wetting agent, slurry defoamer, titanium dioxide, kaolin, heavy calcium and Talcum powder, described auxiliary agent comprises lauryl alcohol ester, dipropylene glycol methyl ether, defoamer, wetting agent, leveling agent and thickener, and the mass percent of described each component in white primer is: water : 7.3%; Dispersant: 0.5%; Slurry wetting agent: 0.4%; Slurry defoamer: 0.4%; Titanium dioxide: 20.7%; Kaolin: 7.7%; Heavy calcium: 7.7%; Talc powder: 11% ; Resin: 38.0%; Lauryl alcohol ester: 2.3%; Dipropylene glycol methyl ether: 2.3%; Defoamer: 0.4%; Wetting agent: 0.4%;

[0073] The dispersant uses Shenzhen Haichuan Industrial Co., Ltd. Hydropatat5040 main component: sodium polycarboxylate, the slurry wetting agent uses TG from Air Products Company, and the slurry defoamer uses Degussa Tego Airex902w. Main component:...

Embodiment 2

[0093] Density board edge banding water-based wood white primer is composed of slurry, resin and additives, the slurry includes water, dispersant, slurry wetting agent, slurry defoamer, titanium dioxide, kaolin, heavy calcium and Talcum powder, described auxiliary agent comprises lauryl alcohol ester, dipropylene glycol methyl ether, defoamer, wetting agent, leveling agent and thickener, and the mass percent of described each component in white primer is: water : 7.0%; dispersant: 0.3%; slurry wetting agent: 0.3%; slurry defoamer: 0.3%; titanium dioxide: 21.6%; kaolin: 6.2%; heavy calcium: 6.2%; talcum powder: 9.4% ; Resin: 41.0%; Lauryl alcohol ester: 3.2%; Dipropylene glycol methyl ether: 3.2%; Defoamer: 0.3%; Wetting agent: 0.3%; The preparation process is the same as in Example 1.

[0094] The formula is characterized by good coverage and crack resistance.

Embodiment 3

[0096] Density board edge-sealing water-based wood white primer, composed of slurry, resin and additives, the slurry includes water, dispersant, slurry wetting agent, slurry defoamer, titanium dioxide, kaolin, heavy calcium and Talcum powder, described auxiliary agent comprises lauryl alcohol ester, dipropylene glycol methyl ether, defoamer, wetting agent, leveling agent and thickener, and the mass percent of described each component in white primer is: water : 6.3%; dispersant: 0.2%; slurry wetting agent: 0.2%; slurry defoamer: 0.2%; titanium dioxide: 18%; kaolin: 5.2%; heavy calcium: 6.7%; talcum powder: 9.5% ; Resin: 45.0%; Lauryl alcohol ester: 3.3%; Dipropylene glycol methyl ether: 3.3%; Defoamer: 0.5%; Wetting agent: 0.5%; The preparation process is the same as in Example 1.

[0097] This formula is characterized by the best anti-cracking effect.

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Abstract

The invention discloses white waterborne wood base coat for a medium density fiberboard and a preparation technology thereof. The preparation technology comprises the processes of: mixing 6.0-8.0 parts of water, 0.2-0.5 part of dispersing agents, 0.2-0.4 part of slurry wetting agents, 0.2-0.4 part of slurry defoaming agents, 18-22 parts of titanium white powder, 5.0-8.0 parts of kaolin, 5.0-8.0 parts of triple superphosphate, 8.0-12.0 parts of talc powder in parts by weight and dispersing to form the slurry, wherein the fineness of the slurry is less than or equal to 50 mu m; mixing 38.0-45.0parts of resins with the slurry; under the condition of stirring, respectively adding 2.0-4.0 parts of dodecyl acetate, 2.0-4.0 parts of dipropylene glycol methyl ether, 0.3-0.6 part of antifoaming agents, 0.3-0.6 part of wetting agents, 0.3-0.6 part of flatting agents and 0.4-0.8 part of thickening agents, and evenly stirring, discharging and packing. The base coat can control water vapour entering the medium density fiberboard. The paint film has 200-300% of drawing tension, also can not crack, and has good sealing and anti-cracking effects. Besides, the invention has the advantages of quick drying speed and good rubbing property.

Description

【Technical field】 [0001] The invention relates to the field of wood coatings, in particular to a density board edge-sealing water-based wood white primer and a preparation process thereof. 【technical background】 [0002] Existing water-based woodware white primers have great defects on the cross-section edge sealing of density boards. It is mainly caused by cracking of the paint film in wet weather. The main reason is that the density board is plywood. In humid weather, water vapor will enter the density board, foam the glue and wood fiber in the density board, make it expand, and cause the paint film on the surface to crack. 【Content of invention】 [0003] The purpose of the present invention is to solve the problems existing in the prior art, and to propose a water-based wood white primer for density board edge sealing and its preparation process, which will not cause cracking of the paint film in a humid environment. [0004] In order to achieve the above object, the ...

Claims

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Application Information

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IPC IPC(8): C09D133/12C09D7/12
Inventor 朱国强毛赵国吴法理袁华龙严俊雨沈杰吕君
Owner ZHEJIANG FEIDA ZHONGKE FINE CHEM
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