CN102070974A - Powder coating for strengthening cross-contamination resistance and preparation method thereof - Google Patents
Powder coating for strengthening cross-contamination resistance and preparation method thereof Download PDFInfo
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- CN102070974A CN102070974A CN 201010577668 CN201010577668A CN102070974A CN 102070974 A CN102070974 A CN 102070974A CN 201010577668 CN201010577668 CN 201010577668 CN 201010577668 A CN201010577668 A CN 201010577668A CN 102070974 A CN102070974 A CN 102070974A
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Abstract
The invention discloses a power coating for strengthening the cross-contamination resistance, which comprises the following components in part by weight: 200 to 250 parts of resin/curing agent composition, 0 to 10 parts of conventional additive, 0 to 200 parts of filler, 0.5 to 10 parts of anti-interference additive and 0 to 30 parts of pigment. The invention also discloses a method for preparing the power coating for strengthening the cross-contamination resistance. The power coating has the characteristics of simple formula and strong cross-contamination resistance, has remarkably improved production and coating efficiency compared with conventional power coatings, ensures that a cured coating has the characteristics of excellent physical and mechanical properties, chemicals resistance and the like, and belongs to a true energy-saving environmentally-friendly coating product.
Description
Technical field
The present invention relates to a kind of powder coating, relate in particular to a kind of powder coating that strengthens anti-crossed contamination ability, the invention still further relates to the preparation method of this powder coating simultaneously.
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, and twentieth century begins to enter China and obtained developing rapidly the nineties.
Yet powder coating is different from paint, though it will obviously be better than solvent-borne type paint on the physical and mechanical properties of coating and chemical resistance, but especially the solvent-borne type that is not so good as in appearance of levelling types of coatings paints smooth in appearance, more fatal is between the dissimilar powder coating because the difference on the surface tension, be easy to be subjected to the other side's interference, produce shrinkage cavity, and shrinkage cavity is the critical defect of powder coating coating, shrinkage cavity appears in case find the coating behind the products solidifying in process of production, show that production line has been subjected to pollution, check cleaning with regard to stopping work, the continuity that influence is produced in addition, is also polluted easily in the coating process of product and shrinkage cavity occurred, must carry out similar processing, seriously restrict the raising of production efficiency.
In production and coating process, for fear of shrinkage cavity occurring, need thoroughly clear up the production scene, strictness control is carried out in operating process, can obtain good effect though do like this, itself also needs to take human and material resources, expends time in; And in some process, in the production handoff procedure of the dissimilar powder coating of especially same production line, it is almost inevitable that the shrinkage cavity phenomenon appears in the production initial stage, and this has become a difficult problem in the powder coating production.
So when the exploitation powder coating product, if strengthen the ability of the anti-crossed contamination of powder coating by formulating of recipe, can reduce the probability that produces shrinkage cavity in the production process greatly, thereby obtain smooth slick filming, this is significant for the production efficiency that improves powder coating enterprise, minimizing resource and energy dissipation.
Summary of the invention
The object of the present invention is to provide a kind of powder coating that strengthens anti-crossed contamination ability, this powder coating has the strong characteristics of simple, the anti-crossed contamination ability of prescription, can significantly improve the efficient of powder coating in production and coating process.
Another object of the present invention is to provide the preparation method of above-mentioned powder coating.
A kind of powder coating that strengthens anti-crossed contamination ability provided by the invention comprises following components in weight portions:
Resin/curing agent composition 200～250
Conventional auxiliary agent 0～10
Filler 0～200
Anti-interference auxiliary agent 0.5～10
Pigment 0～30.
Described resin/curing agent composition is saturated carboxyl polyester resin and triglycidyl group isocyanuric acid ester (TGIC) composition, saturated carboxyl polyester resin and hydroxyalkyl amide (HAA) composition, saturated carboxyl polyester resin and composition epoxy resin or Resins, epoxy and epoxy curing agent composition, and wherein epoxy curing agent is one or several the mixture in amine, carboxylic-acid, imidazoles, phenolic, anhydrides and the phenols.
In described resin/curing agent composition, the weight proportion of saturated carboxyl polyester resin/TGIC is 90/10～99/1, the weight proportion of saturated carboxyl polyester resin/HAA is 90/10～99/1, the weight proportion of saturated carboxyl polyester resin/Resins, epoxy is 70/30～40/60, and the ratio of Resins, epoxy/epoxy curing agent is 200/1～200/80.
Described conventional auxiliary agent is one or more the mixture in flow agent, st-yrax, ventilating agent, optical brightener, growth agent, matting agent and the texture agent.
Described filler is one or more the mixture in titanium dioxide, barium sulfate, silicon powder, lime carbonate and the mica powder.
Described anti-interference auxiliary agent is a kind of polyacrylacid ester compounds that is carried on above the aerosil.
The preparation method of the powder coating of the anti-crossed contamination ability of enhancing provided by the invention may further comprise the steps:
(a) take by weighing resin/curing agent composition, conventional auxiliary agent, filler, anti-interference auxiliary agent and pigment according to the above ratio, place compounding jar, thorough mixing is also broken;
(b) material after the fragmentation enters in the forcing machine and extrudes;
(c) material after extruding is packed promptly after compressing tablet, cooling, pulverizing, screening.
Each component mixing and broken time are 1～30 minute in the described step (a), and the preferred time is 1～10 minute, and the best time is 1～5 minute.
Extrusion temperature in the described step (b) is 60～120 ℃, preferred 80～120 ℃, and more preferably 90～110 ℃.Described forcing machine adopts twin screw or single screw extruder.
The diameter of particle (equivalent grain size D50) of extrudate in the described step (c) after pulverizer is pulverized and sieved is 1～100 micron, preferred 10～80 microns, and more preferably 30～60 microns.
The powder coating of the anti-crossed contamination ability of enhancing provided by the invention coating process be: be coated on the metal base with high pressure static electricity method or fluidized bed process, solidification value is 180～200 ℃, be 5～30 minutes set time, can adopt baking box or infrared being cured.
Powder coating provided by the invention has the strong characteristics of simple, the anti-crossed contamination ability of prescription, and the coating after the curing has characteristics such as excellent physical and mechanical performance, chemical resistance, belongs to real energy-conservation environmental type coating products.
Use powder coating of the present invention, the coating after spraying is solidified has following characteristic properties:
Embodiment
The present invention will be described to enumerate a part of specific examples below, is necessary to be pointed out that at this following specific embodiment only is used for that 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
A kind of powder coating with strong anti-crossed contamination ability, its component and weight part proportioning are:
Acid number is 190 parts of the carboxyl polyester resins of 29～35mgKOH/g
10.0 parts in HAA solidifying agent
80 parts of titanium dioxides
80 parts in barium sulfate
5022.4 parts of esters of acrylic acid flow agents
1.2 parts of st-yraxes
703 1.5 parts of ventilating agents
701 1.2 parts of optical brighteners
2.0 parts of the anti-interference auxiliary agent B KY 3931P of polyacrylate(s)
The preparation method:
(a) take by weighing resin, HAA solidifying agent, titanium dioxide, barium sulfate, esters of acrylic acid flow agent 502, st-yrax, ventilating agent 703, optical brightener 701, the anti-interference auxiliary agent of polyacrylate(s) in proportion and place compounding jar, thorough mixing and broken 1～5 minute;
(b) material after the fragmentation enters two or single screw extrusion machine is extruded; The forcing machine heating and temperature control is at 90～110 ℃;
(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, and screening back packing promptly then.
Embodiment 2
A kind of powder coating with strong anti-crossed contamination ability, its component and weight part proportioning are:
Acid number is 200 parts of the carboxyl polyester resins of 30～36mgKOH/g
12.0 parts in HAA solidifying agent
80 parts of titanium dioxides
80 parts in barium sulfate
502 2.4 parts of esters of acrylic acid flow agents
1.2 parts of st-yraxes
703 1.5 parts of ventilating agents
701 1.2 parts of optical brighteners
3.0 parts of the anti-interference auxiliary agent B KY 3900P of polyacrylate(s)
The preparation method:
(a) take by weighing resin, HAA solidifying agent, titanium dioxide, barium sulfate, esters of acrylic acid flow agent 502, st-yrax, ventilating agent 703, optical brightener 701, BYK 3900P in proportion and place compounding jar, thorough mixing and broken 1～5 minute;
(b) material after the fragmentation enters two or single screw extrusion machine is extruded; The forcing machine heating and temperature control is at 90～110 ℃;
(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, and screening back packing promptly then.
Embodiment 3
A kind of powder coating with strong anti-crossed contamination ability, its component and weight part proportioning are:
Acid number is 196 parts of the carboxyl polyester resins of 30～36mgKOH/g
14.0 parts of solidifying agent TGIC
80 parts of titanium dioxides
80 parts in barium sulfate
502 2.4 parts of esters of acrylic acid flow agents
1.2 parts of st-yraxes
703 1.5 parts of ventilating agents
701 1.2 parts of optical brighteners
2.0 parts of the anti-interference auxiliary agent B KY 3931P of polyacrylate(s)
The preparation method:
(a) take by weighing resin, TGIC, titanium dioxide, barium sulfate, esters of acrylic acid flow agent 502, st-yrax, ventilating agent 703, optical brightener 701, BYK 3931P in proportion and place compounding jar, thorough mixing and broken 1～5 minute;
(b) material after the fragmentation enters two or single screw extrusion machine is extruded; The forcing machine heating and temperature control is at 90～110 ℃;
(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, and screening back packing promptly then.
Embodiment 4
A kind of powder coating with strong anti-crossed contamination ability, its component and weight part proportioning are:
Acid number is 200 parts of the carboxyl polyester resins of 32～38mgKOH/g
15.0 parts of solidifying agent TGIC
80 parts of titanium dioxides
80 parts in barium sulfate
502 2.4 parts of esters of acrylic acid flow agents
1.2 parts of st-yraxes
703 1.5 parts of ventilating agents
701 1.2 parts of optical brighteners
4.0 parts of the anti-interference auxiliary agent B KY 3900P of polyacrylate(s)
The preparation method:
(a) take by weighing resin, TGIC, titanium dioxide, barium sulfate, esters of acrylic acid flow agent 502, st-yrax, ventilating agent 703, optical brightener 701, BYK 3931P in proportion and place compounding jar, thorough mixing and broken 1～5 minute;
(b) material after the fragmentation enters two or single screw extrusion machine is extruded; The forcing machine heating and temperature control is at 90～110 ℃;
(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, and screening back packing promptly then.
Embodiment 5
A kind of powder coating with strong anti-crossed contamination ability, its component and weight part proportioning are:
Acid number is 100 parts of the carboxyl polyester resins of 72～78mgKOH/g
Epoxy equivalent (weight) is 100 parts of the bisphenol A type epoxy resins of 710～815g/eq
80 parts of titanium dioxides
80 parts in barium sulfate
502 2.4 parts of esters of acrylic acid flow agents
1.2 parts of st-yraxes
703 1.5 parts of ventilating agents
701 1.2 parts of optical brighteners
2.0 parts of the anti-interference auxiliary agent B YK 3931P of polyacrylate(s)
The preparation method:
(a) take by weighing vibrin, Resins, epoxy, titanium dioxide, barium sulfate, esters of acrylic acid flow agent 502, st-yrax, ventilating agent 703, optical brightener 701, BYK 3931P in proportion, place compounding jar, thorough mixing and fragmentation 1～5 minute;
(b) material after the fragmentation enters two or single screw extrusion machine is extruded; The forcing machine heating and temperature control is at 90～110 ℃;
(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, and screening back packing promptly then.
Embodiment 6
A kind of powder coating with strong anti-crossed contamination ability, its component and weight part proportioning are:
Acid number is 140 parts of the carboxyl polyester resins of 29～35mgKOH/g
Epoxy equivalent (weight) is 60 parts of the bisphenol A type epoxy resins of 710～815g/eq
80 parts of titanium dioxides
80 parts in barium sulfate
502 2.4 parts of esters of acrylic acid flow agents
1.2 parts of st-yraxes
703 1.5 parts of ventilating agents
701 1.2 parts of optical brighteners
3.0 parts of the anti-interference auxiliary agent B YK 3900P of polyacrylate(s)
The preparation method:
(a) take by weighing carboxyl polyester resin, Resins, epoxy, titanium dioxide, barium sulfate, esters of acrylic acid flow agent 502, st-yrax, ventilating agent 703, optical brightener 701, BYK 3900P in proportion, place compounding jar, thorough mixing and fragmentation 1～5 minute;
(b) material after the fragmentation enters two or single screw extrusion machine is extruded; The forcing machine heating and temperature control is at 90～110 ℃;
(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, and screening back packing promptly then.
Embodiment 7
A kind of powder coating with strong anti-crossed contamination ability, its component and weight part proportioning are:
Epoxy equivalent (weight) is 200 parts of the bisphenol A type epoxy resins of 710～815g/eq
10 parts of epoxy curing agent Dyhard RU 100s
1.0 parts of curing catalyst methylimidazoles
80 parts of titanium dioxides
80 parts in barium sulfate
502 2.4 parts of esters of acrylic acid flow agents
1.2 parts of st-yraxes
703 1.5 parts of ventilating agents
701 1.2 parts of optical brighteners
3.0 parts of the anti-interference auxiliary agent B YK 3931P of polyacrylate(s)
The preparation method:
(a) take by weighing Resins, epoxy, epoxy hardener, curable epoxide promotor methylimidazole, titanium dioxide, barium sulfate, 502 flow agents, st-yrax, ventilating agent 703, optical brightener 701 and BYK 3931P in proportion, place compounding jar, thorough mixing and fragmentation 1～5 minute;
(b) material after the fragmentation enters two or single screw extrusion machine is extruded; The forcing machine heating and temperature control is at 90～110 ℃;
(c) to be ground into particle diameter (equivalent grain size D50) through compressing tablet, cooling, pulverizer be 60 microns powder to the material after extruding, and screening back packing promptly then.
Embodiment 8
A kind of powder coating with strong anti-crossed contamination ability, its component and weight part proportioning are:
Epoxy equivalent (weight) is 200 parts of the bisphenol A type epoxy resins of 710～815g/eq
30 parts of epoxy curing agent tetrahydrophthalic anhydride
1.0 parts of curing catalyst methylimidazoles
80 parts of titanium dioxides
80 parts in barium sulfate
502 2.4 parts of esters of acrylic acid flow agents
1.2 parts of st-yraxes
703 1.5 parts of ventilating agents
701 1.2 parts of optical brighteners
4.0 parts of the anti-interference auxiliary agent B YK 3900P of polyacrylate(s)
The preparation method:
(a) take by weighing Resins, epoxy, epoxy hardener tetrahydrophthalic anhydride, curable epoxide promotor methylimidazole, titanium dioxide, barium sulfate, 502 flow agents, st-yrax, ventilating agent 703, optical brightener 701 and BYK 3900P in proportion, place compounding jar, thorough mixing and fragmentation 1～5 minute;
(b) material after the fragmentation enters two or single screw extrusion machine is extruded; The forcing machine heating and temperature control is at 90～110 ℃;
(c) to be ground into particle diameter (equivalent grain size D50) through compressing tablet, cooling, pulverizer be 60 microns powder to the material after extruding, and screening back packing promptly then.
Film performance after the product application that is obtained by the foregoing description is solidified is as follows:
| Sequence number | Condition of cure | Gloss | Impact | Outward appearance |
| Embodiment 1 | 200℃/10min | 94％ | 50Kgcm, positive and negative passing through | Smooth smooth |
| Embodiment 2 | 200℃/10min | 96％ | 50Kgcm, the front is passed through | Smooth smooth |
| Embodiment 3 | 200℃/10min | 98％ | 50Kgcm, the front is passed through | Smooth smooth |
| Embodiment 4 | 200℃/10min | 95％ | 50Kgcm, the front is passed through | Smooth smooth |
| Embodiment 5 | 180℃/20min | 99％ | 50Kgcm, the front is passed through | Smooth smooth |
| Embodiment 6 | 190℃/15min | 100％ | 50Kgcm, the front is passed through | Smooth smooth |
| Embodiment 7 | 200℃/10min | 93％ | 50Kgcm, the front is passed through | Smooth smooth |
| Embodiment 8 | 180℃/20min | 90％ | 50Kgcm, the front is passed through | Smooth smooth |
Claims (10)
1. a powder coating that strengthens anti-crossed contamination ability is characterized in that, comprises following components in weight portions:
Resin/curing agent composition 200～250
Conventional auxiliary agent 0～10
Filler 0～200
Anti-interference auxiliary agent 0.5～10
Pigment 0～30.
2. the powder coating of the anti-crossed contamination ability of enhancing according to claim 1, it is characterized in that, described resin/curing agent composition is saturated carboxyl polyester resin and triglycidyl group isocyanuric acid ester composition, saturated carboxyl polyester resin and hydroxyalkyl amide composition, saturated carboxyl polyester resin and composition epoxy resin or Resins, epoxy and epoxy curing agent composition, and wherein epoxy curing agent is one or several the mixture in amine, carboxylic-acid, imidazoles, phenolic, anhydrides and the phenols.
3. the powder coating of the anti-crossed contamination ability of enhancing according to claim 2, it is characterized in that, in described resin/curing agent composition, the weight proportion of saturated carboxyl polyester resin/TGIC is 90/10～99/1, the weight proportion of saturated carboxyl polyester resin/HAA is 90/10～99/1, the weight proportion of saturated carboxyl polyester resin/Resins, epoxy is 70/30～40/60, and the ratio of Resins, epoxy/epoxy curing agent is 200/1～200/80.
4. the powder coating of the anti-crossed contamination ability of enhancing according to claim 1 is characterized in that, described conventional auxiliary agent is one or more the mixture in flow agent, st-yrax, ventilating agent, optical brightener, growth agent, matting agent and the texture agent.
5. the powder coating of the anti-crossed contamination ability of enhancing according to claim 1 is characterized in that, described filler is one or more the mixture in titanium dioxide, barium sulfate, silicon powder, lime carbonate and the mica powder.
6. the powder coating of the anti-crossed contamination ability of enhancing according to claim 1 is characterized in that, described anti-interference auxiliary agent is a kind of polyacrylacid ester compounds that is carried on above the aerosil.
7. the preparation method of the powder coating of the anti-crossed contamination ability of the described enhancing of claim 1 is characterized in that, may further comprise the steps:
(a) take by weighing resin/curing agent composition, conventional auxiliary agent, filler, anti-interference auxiliary agent and pigment according to the above ratio, place compounding jar, thorough mixing is also broken;
(b) material after the fragmentation enters in the forcing machine and extrudes;
(c) material after extruding is packed promptly after compressing tablet, cooling, pulverizing, screening.
8. the preparation method of the powder coating of the anti-crossed contamination ability of enhancing according to claim 7 is characterized in that, each component mixing and broken time are 1～30 minute in the described step (a).
9. the preparation method of the powder coating of the anti-crossed contamination ability of enhancing according to claim 7 is characterized in that the extrusion temperature in the described step (b) is 60～120 ℃.
10. the preparation method of the powder coating of the anti-crossed contamination ability of enhancing according to claim 7 is characterized in that, the diameter of particle of the extrudate in the described step (c) after pulverizer is pulverized and sieved is 1～100 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010577668 CN102070974A (en) | 2010-12-07 | 2010-12-07 | Powder coating for strengthening cross-contamination resistance and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010577668 CN102070974A (en) | 2010-12-07 | 2010-12-07 | Powder coating for strengthening cross-contamination resistance and preparation method thereof |
Publications (1)
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| CN102070974A true CN102070974A (en) | 2011-05-25 |
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Cited By (6)
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| CN103160195A (en) * | 2013-02-22 | 2013-06-19 | 安徽华辉塑业科技有限公司 | Low temperature solidified type epoxy/ polyester powder coating |
| CN103509431A (en) * | 2013-08-26 | 2014-01-15 | 广州擎天材料科技有限公司 | Pure epoxy heavy anticorrosive powder paint used for coating building steel bars and preparation method thereof |
| CN104946073A (en) * | 2015-06-05 | 2015-09-30 | 成都市亿佳光电科技有限公司 | Glass coating process |
| CN105860766A (en) * | 2016-06-08 | 2016-08-17 | 合肥市燕美粉末涂料有限公司 | Low-temperature curing polyester/epoxy powder coating and preparation method thereof |
| CN106010089A (en) * | 2016-05-24 | 2016-10-12 | 怀远县金浩电子科技有限公司 | Anti-corrosion coating layer of electric vehicle battery conductor and preparation method of anti-corrosion coating layer |
| CN109627427A (en) * | 2018-11-19 | 2019-04-16 | 天津翔盛新材料有限公司 | A kind of preparation method of low viscosity epoxy resin and super levelling powdery paints |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160195A (en) * | 2013-02-22 | 2013-06-19 | 安徽华辉塑业科技有限公司 | Low temperature solidified type epoxy/ polyester powder coating |
| CN103160195B (en) * | 2013-02-22 | 2016-06-29 | 安徽华辉塑业科技股份有限公司 | Low temperature curing type epoxy/polyester powdery paints |
| CN103509431A (en) * | 2013-08-26 | 2014-01-15 | 广州擎天材料科技有限公司 | Pure epoxy heavy anticorrosive powder paint used for coating building steel bars and preparation method thereof |
| CN103509431B (en) * | 2013-08-26 | 2016-06-08 | 广州擎天材料科技有限公司 | A kind of pure epoxy type double antiseptic powder coating for building iron coating and preparation method thereof |
| CN104946073A (en) * | 2015-06-05 | 2015-09-30 | 成都市亿佳光电科技有限公司 | Glass coating process |
| CN106010089A (en) * | 2016-05-24 | 2016-10-12 | 怀远县金浩电子科技有限公司 | Anti-corrosion coating layer of electric vehicle battery conductor and preparation method of anti-corrosion coating layer |
| CN105860766A (en) * | 2016-06-08 | 2016-08-17 | 合肥市燕美粉末涂料有限公司 | Low-temperature curing polyester/epoxy powder coating and preparation method thereof |
| CN109627427A (en) * | 2018-11-19 | 2019-04-16 | 天津翔盛新材料有限公司 | A kind of preparation method of low viscosity epoxy resin and super levelling powdery paints |
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Application publication date: 20110525 |