CN101451038A - Method for preparing tinting powder - Google Patents
Method for preparing tinting powder Download PDFInfo
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- CN101451038A CN101451038A CNA2007101717469A CN200710171746A CN101451038A CN 101451038 A CN101451038 A CN 101451038A CN A2007101717469 A CNA2007101717469 A CN A2007101717469A CN 200710171746 A CN200710171746 A CN 200710171746A CN 101451038 A CN101451038 A CN 101451038A
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- resin
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- chromatic timing
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Abstract
The invention provides a method for preparing chromatic timing powder. The method comprises: resin is dissolved in organic solvent, added with dye and filler, evenly stirred and ground by a high-speed dispersing machine or sand mill to obtain liquid intermediate with evenly dispersed dye and filler; the evenly dispersed liquid is pressurized, sprayed, dried and granulated, or roasted, dried and crushed by a target type jet mill to obtain the chromatic timing powder. For the chromatic timing powder, the particle size is between 0.5 and 10 micrometers, and the pigment binder ratio is between 50 and 1,000 percent. The chromatic timing powder can be conveniently added to coating base powder to prepare powder coating.
Description
Technical field
The present invention relates to a kind of preparing chromatic timing powder, be specifically related to ultra-fine preparing chromatic timing powder in a kind of powder coating.
Background technology
Powder coating is a kind of powdery substance of being made up of resin, pigment, filler and additive etc., and wherein the resin Composition as main film forming substance can be a kind of resin and cure system thereof, also can be several resin compounds.
Powder coating mainly is divided into thermoplastic powder coating and thermosetting powder coating(s) by its film-forming resin character.The former is a physical property fusion plastification film process, and the latter is a chemical cross linking reaction and solidification process.
Thermoplastic powder coating do to be mixed by warps such as thermoplastic resin, pigment, filler, softening agent and stablizers or melting mixing, pulverizing, cross screen sizing and obtain.
Thermosetting powder coating(s) is made up of thermosetting resin, solidifying agent, pigment and auxiliary agent etc., through pre-mixing, melt extrude, pulverize, cross screen sizing and the powder type coating preparation that obtains.Molecular resin amount in the thermosetting powder coating(s) is little, and itself does not have film forming properties, only under baking condition, is cross-linked into three dimensional structure with the solidifying agent react with, just can be filmed.
Powder coating starts from the later stage thirties 20th century.People are coated to polyethylene powders on the metallic surface with molten state with flame spraying, the beginning of Here it is powder coating.
After entering the nineties in 20th century, along with decorative powder comes out, powder coating is developed greatly.Powder coating market, world every year, the speed with 15%～20% increased progressively fast.
Reinforcement along with global environmental protection consciousness; powder coating has economy, efficient, environmental protection and province can (often claim 4E:Economical, Efficient, Environmental; Energy Saving) etc. advantage and obtain develop rapidly has replaced liquid coating to use in a lot of fields fully.Obtained using widely in fields such as metal protection, decoration, buildings, presented very fine prospect.Powder coating just progressively becomes a mainstay in the coating industry.
The preparation method of powder coating adopts mixing of resin and pigment usually, melt extrudes, and pulverizes and a plurality of preparation processes such as screening.When laboratory color matching preparation model, adjust color at every turn, all must repeat all preparation processes.Usually transfer a color need repeat four, five times and can reach approaching, the color matching that cost above time of half a day and several kilograms of sample powder are finished a sample is very normal thing.The powder coating toning a large amount of manpowers of cost and material, particularly long time are compared with liquid coating, and it is expensive time-consuming again to require great effort, and are the very big problems in powder coating color matching and the production process.In addition, after powder coating production is finished,, must extrude production through innovation and can improve, may cause certain curing to thermosetting coating, influence coating performance and repeatedly extrude if color has deviation.Therefore, it is simple that people wish that always the color matching of powder coating also can resemble the liquid coating, promptly can adjust in prepared powder and just can access the color that needs.A lot of people carried out a lot of the trial to the work that utilizes powder to carry out the toning of powder coating, but powder is complete compatible the mixing with powder can not resemble liquid coating, just can reach even through simple adding mixing, and chromatic timing powder and original washing powder can not melt when adding melting and solidification fully mutually, obtains strengthening coating and can not present even color.People transfer the trial work of powder to receive restriction with powder, almost do not have practical application.
Of the present invention discovering, the conventional powder of different colours are mixed the back and can not be mixed when heating and melting, if but the blended powder is attenuated, degree of irregularity will reduce, along with reducing of particle diameter, mix until reaching fully uniformly, can access uniform coating.
Based on this, the object of the present invention is to provide a kind of superfine, have the chromatic timing powder of high resin-pigment ratio, this chromatic timing powder is easy to and the mutual fusion of coating original washing powder when solidifying, and obtains uniform color.
Summary of the invention
The object of the present invention is achieved like this:
A kind of preparing chromatic timing powder comprises following step:
(1) elder generation in organic solvent, adds pigment and filler with resin dissolves again, stirs;
(2) grind through high speed dispersion or sand mill, obtain the uniform liquid intermediate of pigment and fillers dispersed;
(3) finely dispersed liquid is carried out the pressurized spray drying and granulating, perhaps pulverize with target formula micronizer mill again, obtain the chromatic timing powder that particle diameter reaches 0.5～10 μ m through the overbaking drying.
The mass percent of above-mentioned resin and pigment is a resin: pigment=5.0～90.0%:5～100.0%;
Described resin is selected from vibrin, Resins, epoxy, polyester epoxy hybrid resin, acrylic resin, urethane resin, ethyl cellulose resin, nylon resin, PVDF fluorocarbon resin, one or more in the FEVE resin.
At one preferably in the scheme, described acrylic resin and fluorocarbon resin composition proportioning are 50/50～10/90.
Described pigment is selected from pigment dyestuff, mineral dye, metallic pigment, one or more of pearly pigment.
Described pressurized spray drying and granulating processing condition are: the solids content of liquid is 20%～70%; Inlet air temperature is 70～170 ℃; The spraying stream pressure is 0.1～1.0 normal atmosphere; The pressure of pressurization arosol spray drying and granulating is 0.1～3.0 normal atmosphere; Entering hot air temperature is 70～180 ℃.
The resin-pigment ratio of described chromatic timing powder is 50%-1000%.
The particle diameter of powder grain detects: adopt laser granulometry to measure.
Chromatic timing powder of the present invention must be the very thin powder of particle diameter, and the more little toning of particle diameter is easy more to reach even.The superfine chromatic timing powder joins in the superfine coating original washing powder like this, through mixing, obtains the powder coating of required color after the baking, and the composition of chromatic timing powder can differ greatly.When mixing colours in the chromatic timing powder adding original washing powder with above-described high resin-pigment ratio, the ratio of chromatic timing powder can not be too high.And with the chromatic timing powder that conventional powder coating is prepared from, can join in the conventional powder coating vast scale.
The preparation of the chromatic timing powder of high resin-pigment ratio has several different methods, and the one, adopt traditional powder coating preparation method to prepare meal earlier, and then be crushed to particle diameter 0.5-10 micron with micronizer mill; Another preparing chromatic timing powder promptly is above-mentionedly with an organic solvent resin dissolves to be disperseed, grind evenly through sand mill, passes through spraying drying then, perhaps the preparation method that pulverizes with micronizer mill again of oven drying.
In organic solvent, passed through efficient dispersion processes such as liquid sand milling before powder of the present invention is granulated, made pigment and filler to be dispersed in better in the resin, avoided the situation of meltbility difference to take place, guaranteed that coating has enough good sticking power.
The invention has the beneficial effects as follows: high resin-pigment ratio chromatic timing powder of the present invention can form coating with the original washing powder mixing quickly and easily, and technology is simple, can be used for laboratory toning and factory's ground large-scale production; The chromatic timing powder of the high resin-pigment ratio of superfine can be more equably and the original washing powder mixing, and add-on is less than conventional chromatic timing powder greatly.
Embodiment
Here in conjunction with example, the invention will be further described, but the present invention is not limited to these examples.Any change that those skilled in the art are done under the enlightenment of disclosure of the present invention also all drops in the scope of claim protection of the present invention.
Embodiment 1
Prepare high resin-pigment ratio chromatic timing powder with vibrin
According to following proportioning pigment is added in the organic solvent and to mix, mixed half product when needed can be levigate to reach requirement with it by sand mill.
Butanone 14kg
Vibrin 6.0kg DSM N. V. 5900
Solidifying agent TGIC 0.5kg Vantico T810
The South Sea, st-yrax 0.04kg Ningbo chemistry company limited
Flow agent 1kg Worlee PV88
Pigment sees the following form
Various pigment below in aforesaid liquid, adding,
| Numbering | The pigment title | Add-on/kg |
| 1 | Titanium dioxide R960 (E.I.Du Pont Company) | 6 |
| 2 | The dark green G5319 (dye processing plant, Shanghai) of phthalein | 25 |
| 3 | Red BBN3118 (dye processing plant, Shanghai) | 120 |
| 4 | Lemon yellow 501 (dye processing plant, Shanghai) | 60 |
| 5 | The blue or green basket BSS4342 (dye processing plant, Shanghai) of phthalein | 90 |
| 6 | Iron oxide black pigment (BASF AG) | 3 |
The liquid slurry that obtains volatilizees solvent at the vacuum drying oven inner drying fully, is ground into particle with pulverizer subsequently, is crushed to particle diameter with supersonic jet mill then and is followed successively by 0.5,2,4,6,8,10 microns.
Above-mentioned pressurized spray drying and granulating processing condition are: the solids content of liquid is followed successively by 20%, 30%, 40%, 50%, 60%, 70%; Inlet air temperature is for being followed successively by 70 ℃, 95 ℃, 110 ℃, 130 ℃, 150 ℃, 170 ℃; The spraying stream pressure is followed successively by 0.1,0.3,0.4,0.6,0.8,1.0 normal atmosphere; The pressure of pressurization arosol spray drying and granulating is followed successively by 0.1,0.5,0.8,1.5,2.0,2.4,3.0 normal atmosphere; Enter hot air temperature and be followed successively by 70 ℃, 90 ℃, 110 ℃, 135 ℃, 155 ℃, 180 ℃.
Embodiment 2
With the high resin-pigment ratio chromatic timing powder of other resins
In the butanone solvent of 1000 grams, add following various resins and corresponding solidifying agent (abideing by the formula rate of narrating previously), after the blue Blue11 of inorganic ceramic pigment that adds Shepherd company respectively is uniformly dispersed, use oven drying, promptly smash to particle diameter with comminution by gas stream again and be respectively 0.5,1,2,3,4,5 micron, be used as chromatic timing powder and be used for toning and use.
| Title | Add-on/kg | Pigment add-on/kg |
| Acrylic resin and corresponding solidifying agent | 20 | 5 |
| PVDF resin Kynar711 and vinylformic acid | 60 | 5 |
| Lumiflon and solidifying agent | 75 | 5 |
| Resins, epoxy | 90 | 5 |
| Ethyl cellulose resin | 50 | 5 |
| The B44 resin | 40 | 5 |
Above-mentioned pressurized spray drying and granulating processing condition are: the solids content of liquid is followed successively by 20%, 25%, 35%, 40%, 55%, 60%; Inlet air temperature is for being followed successively by 80 ℃, 90 ℃, 100 ℃, 123 ℃, 145 ℃, 161 ℃; The spraying stream pressure is followed successively by 0.1,0.3,0.5,0.7,0.9,1.0 normal atmosphere; The pressure of pressurization arosol spray drying and granulating is followed successively by 0.2,0.4,0.7,1.2,1.8,2.5,2.8 normal atmosphere; Enter hot air temperature and be followed successively by 70 ℃, 85 ℃, 106 ℃, 128 ℃, 162 ℃, 175 ℃.
Claims (6)
1, a kind of preparing chromatic timing powder is characterized in that, this method comprises following step:
(1) elder generation in organic solvent, adds pigment and filler with resin dissolves again, stirs;
(2) grind through high speed dispersion or sand mill, obtain the uniform liquid intermediate of pigment and fillers dispersed;
(3) finely dispersed liquid is carried out the pressurized spray drying and granulating, perhaps pulverize with target formula micronizer mill again, obtain the chromatic timing powder that particle diameter reaches 0.5～10 μ m through the overbaking drying.
2, preparation method as claimed in claim 1 is characterized in that, the mass percent of resin and pigment is a resin: pigment=5.0～90.0%:5～100.0%;
3, preparation method as claimed in claim 1 is characterized in that, described resin is selected from vibrin, Resins, epoxy, polyester epoxy hybrid resin, acrylic resin, urethane resin, ethyl cellulose resin, nylon resin, PVDF fluorocarbon resin, one or more of FEVE resin.
4, preparation method as claimed in claim 1 is characterized in that, described pigment is selected from pigment dyestuff, mineral dye, metallic pigment, one or more of pearly pigment.
5, preparation method as claimed in claim 1 is characterized in that, pressurized spray drying and granulating processing condition are: the solids content of liquid is 20%～70%; Inlet air temperature is 70～170 ℃; The spraying stream pressure is 0.1～1.0 normal atmosphere; The pressure of pressurization arosol spray drying and granulating is 0.1～3.0 normal atmosphere; Entering hot air temperature is 70～180 ℃.
6, preparation method as claimed in claim 1 is characterized in that, the resin-pigment ratio of described chromatic timing powder is 50%-1000%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101717469A CN101451038A (en) | 2007-11-30 | 2007-11-30 | Method for preparing tinting powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101717469A CN101451038A (en) | 2007-11-30 | 2007-11-30 | Method for preparing tinting powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101451038A true CN101451038A (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101717469A Pending CN101451038A (en) | 2007-11-30 | 2007-11-30 | Method for preparing tinting powder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102471624A (en) * | 2009-08-14 | 2012-05-23 | 埃卡特有限公司 | Ink jet printer ink comprising effect pigments having high gloss |
| CN104387869A (en) * | 2014-11-03 | 2015-03-04 | 上海三爱富新材料股份有限公司 | Preparation method of powder coating |
| CN105086779A (en) * | 2014-10-30 | 2015-11-25 | 合肥蓝天家具制造有限责任公司 | Decorative colored powdery paint |
| CN105295264A (en) * | 2015-12-02 | 2016-02-03 | 上海三爱富新材料股份有限公司 | Preparation method of polyvinylidene fluoride powder composite material and porous composite material |
| CN105368183A (en) * | 2015-11-24 | 2016-03-02 | 安徽省金盾涂料有限责任公司 | Weather-resistant PVDF fluorocarbon powder coating |
| CN106085009A (en) * | 2016-06-30 | 2016-11-09 | 范淳 | A kind of water-based metal granules of pigments and production technology thereof |
-
2007
- 2007-11-30 CN CNA2007101717469A patent/CN101451038A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102471624A (en) * | 2009-08-14 | 2012-05-23 | 埃卡特有限公司 | Ink jet printer ink comprising effect pigments having high gloss |
| CN102471624B (en) * | 2009-08-14 | 2016-03-16 | 埃卡特有限公司 | Comprise the ink-jet printer ink of the effect pigment with high gloss |
| CN105086779A (en) * | 2014-10-30 | 2015-11-25 | 合肥蓝天家具制造有限责任公司 | Decorative colored powdery paint |
| CN104387869A (en) * | 2014-11-03 | 2015-03-04 | 上海三爱富新材料股份有限公司 | Preparation method of powder coating |
| CN105368183A (en) * | 2015-11-24 | 2016-03-02 | 安徽省金盾涂料有限责任公司 | Weather-resistant PVDF fluorocarbon powder coating |
| CN105295264A (en) * | 2015-12-02 | 2016-02-03 | 上海三爱富新材料股份有限公司 | Preparation method of polyvinylidene fluoride powder composite material and porous composite material |
| CN105295264B (en) * | 2015-12-02 | 2017-08-08 | 上海三爱富新材料股份有限公司 | The preparation method of Kynoar powder composite material and composite porous |
| CN106085009A (en) * | 2016-06-30 | 2016-11-09 | 范淳 | A kind of water-based metal granules of pigments and production technology thereof |
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Application publication date: 20090610 |