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Low-temperature curing powder coating for coating medium-density fiber board and preparation method for coating

A powder coating and fiberboard technology, applied in powder coatings, conductive coatings, polyester coatings, etc., can solve the problems of difficulty in popularization and application, cumbersomeness, etc., and achieve the effects of shortening coating time, high powdering efficiency, and improving spraying efficiency

Inactive Publication Date: 2013-01-30
CHINA NAT ELECTRIC APP RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, CN01803313.X provides a method for applying powder coatings to non-metallic substrates, which is a method of applying powder coatings to non-conductive substrates, first exposing the non-conductive substrates to steam and A combination of heating, between 70°C and 140°C for 5 seconds to 10 minutes, followed by electrostatic application of powder coatings to grounded substrates; this simple and reliable pretreatment method allows for efficient application of powder coatings onto a non-conductive substrate, resulting in a uniform and even deposition of the powder coating over the entire surface, including the edges, without detrimental effect on the subsequent curing of the powder film, but this process is too cumbersome, subjecting the substrate to temperature In a higher environment, this kind of spray chamber needs to be built additionally, which is not easy to popularize and apply

Method used

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  • Low-temperature curing powder coating for coating medium-density fiber board and preparation method for coating
  • Low-temperature curing powder coating for coating medium-density fiber board and preparation method for coating
  • Low-temperature curing powder coating for coating medium-density fiber board and preparation method for coating

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]

[0030] Preparation:

[0031] (a) Weigh each component according to the proportion, place it in the mixing tank, mix thoroughly and crush for 1-20 minutes;

[0032] (b) The crushed material enters the twin or single screw extruder for extrusion; the heating temperature of the extruder is controlled at 70~90°C;

[0033] (c) The extruded material is compressed into tablets, cooled, pulverized into a powder with a particle size (equivalent particle size D50) of 50 microns, and then sieved and packaged.

Embodiment 2

[0035]

[0036]

[0037] Preparation:

[0038] (a) Weigh each component according to the proportion, place it in the mixing tank, fully mix and crush for 5 minutes;

[0039] (b) The crushed material is extruded into a twin or single screw extruder; the heating temperature of the extruder is controlled at 80°C;

[0040] (c) The extruded material is compressed into tablets, cooled, pulverized into a powder with a particle size (equivalent particle size D50) of 50 microns, and then sieved and packaged.

Embodiment 3

[0042]

[0043] Preparation:

[0044] (a) Weigh each component according to the proportion, place it in the mixing tank, fully mix and crush for 5 minutes;

[0045] (b) The crushed material is extruded into a twin or single screw extruder; the heating temperature of the extruder is controlled at 80°C;

[0046] (c) The extruded material is compressed into tablets, cooled, pulverized into a powder with a particle size (equivalent particle size D50) of 50 microns, and then sieved and packaged.

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PUM

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Abstract

The invention discloses a low-temperature curing powder coating for coating a medium-density fiber board. The coating comprises 200 to 400 parts of conventional medium-density fiber board powder coating, 10 to 200 parts of conductive filler, and conductive pigment. The invention also discloses a preparation method for the powder coating. The powder coating for electrostatic coating can effectively overcome the defect that the conventional medium-density fiber board powder coating for electrostatic coating of the medium-density fiber board is difficult to coat.

Description

technical field [0001] The invention relates to a powder coating, in particular to a low-temperature curing powder coating for medium density fiberboard (MDF) coating. The invention also relates to a preparation method of the powder coating. Background technique [0002] Powder coating is a recognized 4E type coating product with high production efficiency, excellent film performance, eco-environmental protection and economy. With people's gradual attention to environmental protection, energy saving and other issues, as well as strict requirements for coating technology, powder coatings have many properties that were considered unattainable in the early 1980s. Powder coatings, like other green coatings, have gained worldwide popularity. improve dramatically. Whether the early powder coatings are thermoplastic or thermosetting, the film-forming temperature is very high, and generally need to be baked at 180 ° C for 10 to 20 minutes, so that its application is limited to hea...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D167/00C09D5/24C09D5/03
Inventor 胡百九高庆福周和荣邓剑辉张捷杨璠
Owner CHINA NAT ELECTRIC APP RES INST
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