CN102898923A - Low-temperature curing powder coating for coating medium-density fiber board and preparation method for coating - Google Patents

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

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Publication number
CN102898923A
CN102898923A CN2012103717568A CN201210371756A CN102898923A CN 102898923 A CN102898923 A CN 102898923A CN 2012103717568 A CN2012103717568 A CN 2012103717568A CN 201210371756 A CN201210371756 A CN 201210371756A CN 102898923 A CN102898923 A CN 102898923A
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CN
China
Prior art keywords
mdf
powder coating
medium density
fibre board
density fibre
Prior art date
Application number
CN2012103717568A
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Chinese (zh)
Inventor
胡百九
高庆福
周和荣
邓剑辉
张捷
杨璠
Original Assignee
中国电器科学研究院有限公司
广州擎天实业有限公司
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Application filed by 中国电器科学研究院有限公司, 广州擎天实业有限公司 filed Critical 中国电器科学研究院有限公司
Priority to CN2012103717568A priority Critical patent/CN102898923A/en
Publication of CN102898923A publication Critical patent/CN102898923A/en

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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

A kind of low temperature cured powder coating for the medium density fibre board (MDF) application and preparation method thereof
Technical field
The present invention relates to a kind of powder coating, relate in particular to a kind of low temperature cured powder coating for medium density fibre board (MDF) (MDF) application.The invention still further relates to the preparation method of this powder coating.
Background technology
Powder coating is a kind of generally acknowledged high efficiency, good film performance, ecological environment-friendly type, Eco-power 4E type coating products.Along with the progressively attention of people to environmental protection, the problem such as energy-conservation, and to the strict demand of coating technology so that powder coating has possessed many performances that are beyond one's reach of thinking in early days in the eighties in 20th century, powder coating is the same with other green coatings, has obtained develop rapidly in the whole world.Early stage powder coating is no matter be thermoplasticity or thermoset, its film-forming temperature is very high, generally needs toasting more than 180 ℃ 10～20 minutes, makes it use resistant substrates such as only being confined to metal, can't be applied to the thermo-sensitivity base material, especially the application of medium density fibre board (MDF) (MDF).
In recent years, along with the continuous progress of powder coating technology of preparing, the solidification value of powder coating can be reduced to below 150 ℃ even be lower, thereby has created condition for the powder coating and their application of realizing MDF sheet material.At present, the powder coating of existing conventional MDF sheet material all mainly is made of membrane-forming agent, auxiliary agent and color stuffing.For example, CN200610123000.6 discloses a kind of low temperature cured powder coating for the medium density fibre board (MDF) application and preparation method thereof, and this powder coating is epoxy/polyester type (mixed type) low temperature cured powder coating that can be used for the MDF application.Mentioned the production method of a class MDF with powder coating in CN200710135120.2 UV curing powder coating and the production method thereof.At present, powder coating and their application all is to adopt the electrostatic spraying mode, make the powder coating powder with electric charge by friction or corona discharge when being application, and then with charged powder spraying on base material, in actual applications, can realize the curing under the low temperature although find existing low temperature cured powder coating, powder on MDF sheet material is difficult for.Even powder coating has been coated sheet material, powder coating crawling on sheet material is even, and because low with the cohesive force of sheet material, the non-constant of upper powder effect is easily peeled off.In general, in order to improve the painting effect of powder coating on MDF sheet material, need first spraying, solidify again or Procuring, again spraying, repeated multiple times, required spray time is long, one cover technique is got off and is needed half hour at least, inefficiency, and the spraying cost also increases thereupon.
In addition, CN01803313.X provides the method for a kind of application of powder coatings to the non-metallic substrate, the method is a kind of method that applies powder coating on the non conductive substrate, at first non conductive substrate is exposed in the combination of steam and heating, temperature is between 70 ~ 140 ℃, time is 5s ~ 10min, subsequently on the base material with powder coating static paint ground connection; This simple and reliably pretreatment process can make powder coating effectively on the paint non conductive substrate, cause powder coating and evenly and fifty-fifty be deposited on the whole surface that comprises the edge, and the follow-up curing of powder film there is not disadvantageous effect, but this technique is too loaded down with trivial details, base material is placed the higher environment of temperature, need the extra this spray chamber of building, be difficult for applying.
Summary of the invention
The object of the present invention is to provide a kind of low temperature cured powder coating for the medium density fibre board (MDF) application.This powder coating helps to improve the production efficiency of medium density fiber sheet material powder coating and their application for have good upper powder effect with medium density fibre board (MDF), shortens spray time, reduces the spraying cost.
Another object of the present invention is to provide the preparation method of above-mentioned powder coating.
First purpose of the present invention is achieved through the following technical solutions: a kind of low temperature cured powder coating for the medium density fibre board (MDF) application, comprise conventional medium density fibre board (MDF) powder coating and conductive filler material, wherein, 200 ~ 400 parts of described conventional medium density fibre board (MDF) powder coating, 10 ~ 200 parts of described conductive filler materials.
Described conventional medium density fibre board (MDF) powder coating is made of membrane-forming agent, auxiliary agent and color stuffing.
Further, the present invention also comprises 0.5 ~ 10 part of conducting pigment.
As an embodiment of the invention, the present invention includes the component of following weight part proportioning:
As another embodiment of the invention, the present invention includes the component of following weight part proportioning:
First purpose of the present invention can also realize by following scheme: a kind of low temperature cured powder coating for the medium density fibre board (MDF) application, comprise conventional medium density fibre board (MDF) powder coating and conducting pigment, wherein, 200 ~ 400 parts of described conventional medium density fibre board (MDF) powder coating, 0.5 ~ 10 part of described conducting pigment.
Membrane-forming agent of the present invention is Resins, epoxy/polyester and resin composition, perhaps Resins, epoxy/epoxy hardener composition.Epoxy hardener can be the modified phenolic resins low temperature curing agent.
Conductive filler material of the present invention is one or more the mixture in zinc powder, zinc oxide, conductive tin oxide, conductive titanium dioxide, conductive carbon nanotube, conductive mica powder, conduction barium sulfate and the electrically conductive graphite etc.Described conductive tin oxide can be stibium doping stannic oxide.
Conducting pigment of the present invention is one or more the mixture in graphitized carbon black, the mineral dyes such as conduction such as conduction iron oxide red etc.
Auxiliary agent of the present invention is one or more the mixture in flow agent, st-yrax, defoamer, texture agent and the growth agent.Wherein, described flow agent comprise 502, PV88, P67 etc.; Defoamer is 703 etc.; Growth agent is EDI; The texture agent is sand streak agent, wrinkle agent etc.
Conventional color stuffing of the present invention comprises conventional fillers and conventional pigment.Wherein, described conventional fillers is one or more the mixture in titanium dioxide, barium sulfate, silicon powder, calcium carbonate and the mica powder.Described conventional pigment is one or more the mixture in mineral dye, pigment dyestuff, the metallic pigment.
Second order of the present invention is achieved through the following technical solutions: a kind of preparation method of the low temperature cured powder coating for the medium density fibre board (MDF) application may further comprise the steps:
(1) takes by weighing according to the above ratio each component, place compounding jar, fully mix and broken 1 ~ 20 minute, obtain mixture;
(2) mixture is sent in the forcing machine extruded, wherein extrusion temperature is 70 ~ 90 ℃;
(3) material after extruding can obtain the powder coating for medium density fibre board (MDF) (MDF) application after compressing tablet, cooling, pulverizing, screening.
The present invention compared with prior art has the following advantages:
(1) contains conductive filler material and conducting pigment among the present invention, by introducing the color stuffing of conduction, the conductivity of powder is improved, thereby in electrostatic spray process easily with on more electric charge and rely on consequent electrostatic interaction to be attached on the base material, the upper powder efficient of powder coating is high, in the defective of carrying out being not easy when electrostatic coating can effectively avoid conventional MDF powder coating carrying out MDF sheet material electrostatic coating powder, only need an application can reach application thickness, need not repeatedly to spray, shortened being coated with ETL estimated time of loading, effectively promoted spray efficiency.
(2) used equipment and the conventional MDF powder coating in the prior art of preparation of the present invention is identical, does not need the optional equipment production unit, uses very convenient.
Embodiment
The below enumerates a part of specific examples, and the present invention will be described, is necessary to be pointed out that at this following specific embodiment only for the invention will be further described, does not represent limiting the scope of the invention.Some nonessential modifications that other people make according to the present invention and adjustment still belong to protection scope of the present invention.
Embodiment 1
The preparation method:
(a) take by weighing each component by proportioning, place compounding jar, fully mix and broken 1 ~ 20 minute;
(b) material after the fragmentation enters two or single screw extrusion machine is extruded; The forcing machine heating and temperature control is at 70 ~ 90 ℃;
(c) to be ground into particle diameter (equivalent grain size D50) through compressing tablet, cooling, pulverizer be 50 microns powder to the material after extruding, then packing and get final product after the screening.
Embodiment 2
The preparation method:
(a) take by weighing each component by proportioning, place compounding jar, fully mix and broken 5 minutes;
(b) material after the fragmentation enters two or single screw extrusion machine is extruded; The forcing machine heating and temperature control is at 80 ℃;
(c) to be ground into particle diameter (equivalent grain size D50) through compressing tablet, cooling, pulverizer be 50 microns powder to the material after extruding, then packing and get final product after the screening.
Embodiment 3
The preparation method:
(a) take by weighing each component by proportioning, place compounding jar, fully mix and broken 5 minutes;
(b) material after the fragmentation enters two or single screw extrusion machine is extruded; The forcing machine heating and temperature control is at 80 ℃;
(c) to be ground into particle diameter (equivalent grain size D50) through compressing tablet, cooling, pulverizer be 50 microns powder to the material after extruding, then packing and get final product after the screening.
Embodiment 4
The preparation method:
(a) take by weighing each component by proportioning, place compounding jar, fully mix and broken 5 minutes;
(b) material after the fragmentation enters two or single screw extrusion machine is extruded; The forcing machine heating and temperature control is at 80 ℃;
(c) to be ground into particle diameter (equivalent grain size D50) through compressing tablet, cooling, pulverizer be 50 microns powder to the material after extruding, then packing and get final product after the screening.
Medium density fibre board (MDF) (MDF) application that is used for of the high powder utilization that the embodiment of the invention provides with the coating process of powder coating is: be coated on medium density fibre board (MDF) (MDF) base material with high pressure static electricity method or fluidized bed process, solidification value is 120～140 ℃, be 5～20 minutes set time, can adopt baking box or infrared being cured.Then compare with powder coating with existing conventional medium density fibre board (MDF) (MDF) application, the result participates in following table:
。

Claims (10)

1. a low temperature cured powder coating that is used for the medium density fibre board (MDF) application comprises conventional medium density fibre board (MDF) powder coating, it is characterized in that, also comprise conductive filler material, wherein, 200 ~ 400 parts of described conventional medium density fibre board (MDF) powder coating, 10 ~ 200 parts of described conductive filler materials.
2. described low temperature cured powder coating for the medium density fibre board (MDF) application according to claim 1 is characterized in that, also comprises 0.5 ~ 10 part of conducting pigment.
3. described low temperature cured powder coating for the medium density fibre board (MDF) application according to claim 2 is characterized in that, comprises the component of following weight part proportioning:
4. according to claim 1 and 2 or 3 described low temperature cured powder coatings for the medium density fibre board (MDF) application, it is characterized in that, described membrane-forming agent is Resins, epoxy/polyester and resin composition, perhaps Resins, epoxy/epoxy hardener composition.
5. according to claim 1 and 2 or 3 described low temperature cured powder coatings for the medium density fibre board (MDF) application, it is characterized in that, described conduction color stuffing is one or more the mixture in zinc powder, zinc oxide, conductive tin oxide, conductive titanium dioxide, conductive carbon nanotube, Conductive mica, conduction barium sulfate and the electrically conductive graphite.
6. according to claim 1 and 2 or 3 described low temperature cured powder coatings for the medium density fibre board (MDF) application, it is characterized in that, described conducting pigment is one or both the mixture in graphitized carbon black and the conduction iron oxide red.
7. described low temperature cured powder coating for the medium density fibre board (MDF) application according to claim 3 is characterized in that, described auxiliary agent is one or more the mixture in flow agent, st-yrax, defoamer and the growth agent.
8. described low temperature cured powder coating for the medium density fibre board (MDF) application according to claim 3, it is characterized in that, described color stuffing comprises conventional fillers and conventional pigment, and described conventional fillers is one or more the mixture in titanium dioxide, barium sulfate, silicon powder, calcium carbonate and the mica powder; Described conventional pigment is one or more the mixture in mineral dye, pigment dyestuff, the metallic pigment.
9. a low temperature cured powder coating that is used for the medium density fibre board (MDF) application comprises conventional medium density fibre board (MDF) powder coating, it is characterized in that, also comprise conducting pigment, wherein, 200 ~ 400 parts of described conventional medium density fibre board (MDF) powder coating, 0.5 ~ 10 part of described conducting pigment.
10. a claim 1 or 2 or 3 or 9 described novel medium density fibre board (MDF) applications is characterized in that with the preparation method of powder coating, may further comprise the steps:
(1) takes by weighing according to the above ratio each component, place compounding jar, fully mix and broken 1 ~ 20 minute, obtain mixture;
(2) mixture is sent in the forcing machine extruded, wherein extrusion temperature is 70 ~ 90 ℃;
(3) material after extruding can obtain the powder coating for the medium density fibre board (MDF) application after compressing tablet, cooling, pulverizing, screening.
CN2012103717568A 2012-09-28 2012-09-28 Low-temperature curing powder coating for coating medium-density fiber board and preparation method for coating CN102898923A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103160192A (en) * 2013-02-22 2013-06-19 安徽华辉塑业科技有限公司 Sand texture type polyester/epoxy powder coating and preparation method thereof
CN103483988A (en) * 2013-08-26 2014-01-01 广州擎天材料科技有限公司 Boiling-endurable sand-ripple powder paint for coating corners of aluminum section and preparation method thereof
CN103709909A (en) * 2013-12-19 2014-04-09 安徽神剑新材料股份有限公司 Powder paint applied to medium-density fiberboard, and preparation method and application thereof
CN106318148A (en) * 2016-08-31 2017-01-11 苏州翰晨商贸有限公司 Anti-static texturing powder coating
CN106566376A (en) * 2016-10-19 2017-04-19 武汉科技大学 Low-light-leveling and low-temperature-curing epoxy powder coating used for coating medium-density fiberboard
CN106634263A (en) * 2016-11-22 2017-05-10 天长市金陵电子有限责任公司 Thermosetting type static spraying powder coating and a preparing method thereof
CN106634478A (en) * 2016-11-22 2017-05-10 天长市金陵电子有限责任公司 Special high-weatherability coating for electrostatic spraying
CN106752759A (en) * 2016-11-22 2017-05-31 天长市金陵电子有限责任公司 A kind of electrostatic spraying special low temperature cured powder paint and preparation method thereof
CN108659678A (en) * 2018-06-15 2018-10-16 山东兰生环保科技有限公司 The epoxide powder coating and preparation method thereof of multilayer carbon nanotube enhancing
CN110577660A (en) * 2019-08-14 2019-12-17 佛山宜可居新材料有限公司 organic polymer material and coating method thereof
CN110684441A (en) * 2018-07-05 2020-01-14 漳州市万诚粉体涂料有限公司 Method for preparing electrostatic powder coating

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CN1948409A (en) * 2006-10-25 2007-04-18 广州电器科学研究院 Low temperature solidified powder paint used for coating medium density fiber board and its production technology
CN101508866A (en) * 2009-03-25 2009-08-19 杜邦华佳化工有限公司 Conductive powder paint
CN101747826A (en) * 2009-11-27 2010-06-23 广州擎天实业有限公司 Low temperature curing epoxy low-gloss powder coating and preparation method thereof

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CN1193639A (en) * 1998-04-29 1998-09-23 王国真 Anti-electrostatic powder coating material and spraying method
EP1556447A1 (en) * 2002-07-24 2005-07-27 Geotech Chemical Company Method for applying a coating that acts as an electrolytic barrier and cathodic corrosion prevention system
CN1948409A (en) * 2006-10-25 2007-04-18 广州电器科学研究院 Low temperature solidified powder paint used for coating medium density fiber board and its production technology
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CN101747826A (en) * 2009-11-27 2010-06-23 广州擎天实业有限公司 Low temperature curing epoxy low-gloss powder coating and preparation method thereof

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103160192A (en) * 2013-02-22 2013-06-19 安徽华辉塑业科技有限公司 Sand texture type polyester/epoxy powder coating and preparation method thereof
CN103483988A (en) * 2013-08-26 2014-01-01 广州擎天材料科技有限公司 Boiling-endurable sand-ripple powder paint for coating corners of aluminum section and preparation method thereof
CN103709909A (en) * 2013-12-19 2014-04-09 安徽神剑新材料股份有限公司 Powder paint applied to medium-density fiberboard, and preparation method and application thereof
CN103709909B (en) * 2013-12-19 2016-02-17 安徽神剑新材料股份有限公司 A kind of be applied to medium density fibre board (MDF) powder coating, preparation method and application thereof
CN106318148A (en) * 2016-08-31 2017-01-11 苏州翰晨商贸有限公司 Anti-static texturing powder coating
CN106566376A (en) * 2016-10-19 2017-04-19 武汉科技大学 Low-light-leveling and low-temperature-curing epoxy powder coating used for coating medium-density fiberboard
CN106566376B (en) * 2016-10-19 2019-07-30 武汉科技大学 A kind of medium density fibre board (MDF) coating flat Low-Temperature Curable Epoxy Powder Paint of low light stream
CN106634478A (en) * 2016-11-22 2017-05-10 天长市金陵电子有限责任公司 Special high-weatherability coating for electrostatic spraying
CN106752759A (en) * 2016-11-22 2017-05-31 天长市金陵电子有限责任公司 A kind of electrostatic spraying special low temperature cured powder paint and preparation method thereof
CN106634263A (en) * 2016-11-22 2017-05-10 天长市金陵电子有限责任公司 Thermosetting type static spraying powder coating and a preparing method thereof
CN108659678A (en) * 2018-06-15 2018-10-16 山东兰生环保科技有限公司 The epoxide powder coating and preparation method thereof of multilayer carbon nanotube enhancing
CN110684441A (en) * 2018-07-05 2020-01-14 漳州市万诚粉体涂料有限公司 Method for preparing electrostatic powder coating
CN110577660A (en) * 2019-08-14 2019-12-17 佛山宜可居新材料有限公司 organic polymer material and coating method thereof
CN110577660B (en) * 2019-08-14 2020-07-31 佛山宜可居新材料有限公司 Organic polymer material and coating method thereof

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