CN104341982A - Powder coating - Google Patents
Powder coating Download PDFInfo
- Publication number
- CN104341982A CN104341982A CN201410605511.6A CN201410605511A CN104341982A CN 104341982 A CN104341982 A CN 104341982A CN 201410605511 A CN201410605511 A CN 201410605511A CN 104341982 A CN104341982 A CN 104341982A
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- CN
- China
- Prior art keywords
- powder coating
- parts
- friction
- powder
- spraying
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a powder coating, comprising the following substances in parts by weight: 30-50 parts of end carboxyl saturated polyester resin, 4.5-20 parts of epoxy resin, 0.8-1 part of a flatting agent GLP588, 18-20 parts of a pigment, 0-17 parts of an inorganic filler, 1-2 parts of benzoin, 1-2 parts of a wetting agent, 0-1 part of a degassing agent and 0.3 part of an abrasive TBA. Through introduction of the abrasive, a large gap is formed between the powder coating and a fabrication material (high-polymer PTFE material) of a pipe wall of a friction gun and a friction rod in dielectric constant in the friction spraying process; the powder coating is prompted to be perfectly adsorbed on a work-piece after rubbing with the material in the friction gun to be electrified under the power of dry airflow; through a frictional electrification manner, the Faraday effect generated by a corona field is avoided; every corner of the work-piece can be completely covered by the powder coating; meanwhile, relatively to electrostatic spraying, the powdering rate of the work-piece is relatively high; the solidified film is relatively excellent in flatting.
Description
Technical field
The invention belongs to paint field, be specifically related to a kind of powder coating.
Background technology
At present, powder paint technique is common electrostatic spraying and the spraying of friction rifle.Electrostatic spraying is widely used at home, and because its technique requires lower for powder coating, but produce because electrostatic spraying has corona field, occur Faraday effect, cause complex part to there will be dead angle phenomenon, segment angle is met with misfortune above powder.Although static gun is through repeatedly improveing now, Faraday effect can only reduce, and but can not avoid.
And the rifle spraying that rubs can solve powder problem on complex part dead angle, friction rifle spraying coating process also has following plurality of advantages: 1, powder utilization is high for the first time, increases the benefit, and reduces and reclaims powder.2, Faraday effect is overcome, particularly effective to complex part spraying.3, compared with high pressure static electricity rifle, powder on workpiece evenly, film coated surface levelling and planarization better.4, comprehensive automatic coating can be adopted, reduce cost of labor etc.Friction rifle spraying principle: the principle of work of friction rifle utilizes triboelectrification principle to make powder charged, electric charge is by collision, the friction of powder and the special macromolecular material in rifle wall and nylon, contact, clutch produces, and its motivating force is air flow power.Friction-bar in friction rifle and the material of tube wall are a kind of special macromolecular material PTFE, its specific inductivity is 2.1, and any material higher than its specific inductivity, all positive charge can be obtained afterwards with its friction, but the specific inductivity of the vibrin in powder coating is only about 3.0, other auxiliary material specific inductivity are less, therefore the specific inductivity of common powder coating is too little with the dielectric constants of friction rifle material therefor, so significantly not tribocharging.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of powder coating, the friction belt electricity of this powder coating improves greatly, is applied to friction rifle spraying coating process.
A kind of powder coating provided by the invention, comprises following material and weight part:
Described vibrin is end carboxyl saturated polyester resin.
Described solidifying agent is the one in epoxy resin, isocyanuric acid three-glycidyl ester, beta-hydroxy alkylamide.
Described flow agent is the GLP588 of Ningbo South-sea Chemical Co., Ltd..
Described mineral filler is one or more in barium sulfate, calcium carbonate, wilkinite, mica powder.
Described auxiliary agent is one or more in st-yrax, wetting agent, air release agent, coupling agent.
Described friction agent is a kind of bulky amine compounds, it is a kind of liquid substance, can by aerosil or low acid number vibrin as carrier, add in powder coating, also directly bulky amine compounds can be added in the later stage of synthesizing polyester resin, make it disperse in powder coating more even.
Preferred powder coating, comprises following material and weight part:
Preferred powder coating, comprises following material and weight part:
Vibrin SJ5B used is produced by Anhui Shenjian New Material Co., Ltd..
The making method of powder coating of the present invention is as follows:
In mixing machine, fully mix above component, jointly extruded by forcing machine, cool, pulverize (control particle diameter 30-50 μm), grind, sieve, pack, finished product.
Powder paint curing process of the present invention is as follows:
Workpiece pre-treatment → powder coating friction rifle spraying → hot baking-curing (180-200 DEG C are toasted 10-15 minutes) → Workpiece inspection warehouse-in.
The present invention is by the introducing of friction agent, make powder coating in friction spray coating process, powder coating produces very large gap with the specific inductivity of the friction tube wall of rifle and the making material (polymer PTFE material) of friction-bar, impel powder coating under the power of drying air stream, can ideally be adsorbed onto on workpiece after charged with the material friction in friction rifle, and by the mode of frictional electrification, avoid the Faraday effect that corona field produces, workpiece from cellar to rafter can be covered by powder coating completely.Electrostatic spraying relatively simultaneously, the powder utilization of workpiece is higher, and the film levelling after solidification is more outstanding.
Embodiment:
Below in conjunction with specific examples, the present invention is described further.
Each material of the formula in embodiment is all in mass fraction.
Powder coating preparation method described in the embodiment of the present invention is as follows:
By powder coating formulation by mass fraction proportioning raw material → abundant pre-mixing in mixing tank → by forcing machine jointly extrude → compressing tablet → pulverize → grind → sieve → packaging final prod.
The spraying curing process of powder coating of the present invention is as follows:
Workpiece pre-treatment → powder coating friction rifle spraying → hot baking-curing (180-200 DEG C are toasted 10-15 minutes) → Workpiece inspection warehouse-in.
Example 1
A kind of powder coating, comprises following material and weight percent:
Vibrin SJ3A used is produced by Anhui Shenjian New Material Co., Ltd..
Example 2:
A kind of powder coating, comprises following material and weight percent:
Vibrin SJ5B used is produced by Anhui Shenjian New Material Co., Ltd..
Example 3:
A kind of powder coating, comprises following material and weight percent:
Vibrin SJ6B used is produced by Anhui Shenjian New Material Co., Ltd..
Example 4:
A kind of powder coating, comprises following material and weight percent:
Vibrin SJ4E used is produced by Anhui Shenjian New Material Co., Ltd..
Example 5:
A kind of powder coating, comprises following material and weight percent:
Vibrin SJ4E used is produced by Anhui Shenjian New Material Co., Ltd..
In order to contrast the effect of the spraying of friction rifle and electrostatic spraying further, after above invention 1-5 example powder process, take the powder of identical weight, respectively on the ground workpiece of same material and size, with the spraying of friction rifle and electrostatic spraying, film-forming (200 DEG C/10min) at that same temperature, obtains the coating index result of two kinds of spraying coating process, respectively as shown in following table 1, table 2.
Table 1: friction rifle spraying coating process coating index result
Table 2: electrostatic painting process coating index result
| Test event | Thickness | Gloss | Levelling grade | Powder utilization |
| Example 1 | 80～92μm | 98.7％ | 3 grades | Generally |
| Example 2 | 78～96μm | 98.1％ | 2 grades | Well |
| Example 3 | 70～88μm | 98.9％ | 3 grades | Well |
| Example 4 | 82～102μm | 92.8％ | 2 grades | Well |
| Example 5 | 84～100μm | 92.5％ | 2 grades | Outstanding |
Can be found out by table 1 and table 2 data, the workpiece coating film thickness of friction rifle spraying is thicker than the coating film thickness of electrostatic spraying, serves the effect of protection workpiece; Film and levelling effect and the powder utilization higher than the coating film gloss of electrostatic spraying of the spraying of friction rifle improve all greatly, solve the problem that complex part powder utilization is bad.In addition, record when the data friction rifle of friction belt electricity sprays, because there is no these data during electrostatic spraying, therefore do not compare, but when ordinary powder is with the spraying of friction rifle under normal circumstances, friction belt electricity only has 0.2-0.4 μ A, powder utilization is very poor, can not be adsorbed on workpiece, and powder delivery can not be continuous during spraying, friction belt electricity is only had to be greater than 1.0 μ A, during the spraying of friction rifle, the powder utilization of powder improves greatly, during spraying, powder delivery is continuous, uniform adsorption is at workpiece surface, the friction belt electricity of example 1-5 of the present invention meets the spraying coating process of friction rifle completely thus.
Claims (3)
1. a powder coating, is characterized in that, described powder coating comprises following material and weight part:
2. the powder coating according to right 1, is characterized in that, described mineral filler is one or more in barium sulfate, calcium carbonate, wilkinite, mica powder.
3. the powder coating according to right 1, is characterized in that, described powder coating comprises following material and weight part:
Vibrin SJ5B used is produced by Anhui Shenjian New Material Co., Ltd..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605511.6A CN104341982A (en) | 2014-10-31 | 2014-10-31 | Powder coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410605511.6A CN104341982A (en) | 2014-10-31 | 2014-10-31 | Powder coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104341982A true CN104341982A (en) | 2015-02-11 |
Family
ID=52498476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410605511.6A Pending CN104341982A (en) | 2014-10-31 | 2014-10-31 | Powder coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104341982A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105038515A (en) * | 2015-09-07 | 2015-11-11 | 福建万安实业有限公司 | Pure-copper-imitated anti-corrosion powder coating |
| CN105038519A (en) * | 2015-08-26 | 2015-11-11 | 广州擎天材料科技有限公司 | Powder coating used on automotive aluminium wheels and suitable for balance weights to bond and preparation method thereof |
| CN105062332A (en) * | 2015-09-08 | 2015-11-18 | 福建万安实业有限公司 | Powder coating with high wear resistance |
| CN105176335A (en) * | 2015-10-30 | 2015-12-23 | 安徽神剑新材料股份有限公司 | Anti-caking powder coating |
| CN105482615A (en) * | 2015-10-30 | 2016-04-13 | 中南大学 | LDS powdery coating and preparation method thereof |
| CN106634468A (en) * | 2016-10-01 | 2017-05-10 | 燕园众欣纳米科技（北京）有限公司 | Graphene transparent powder coating for tribo gun to spray MDF plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000265090A (en) * | 1999-03-16 | 2000-09-26 | Kansai Paint Co Ltd | Frictionally electrifiable powder coating composition |
| CN101469147A (en) * | 2008-08-20 | 2009-07-01 | 江苏兰陵高分子材料有限公司 | Friction electrostatic painting infrared ray cured powder paint for electromagnetic wire and lacquered wire, preparation and use thereof |
| CN103509439A (en) * | 2012-06-21 | 2014-01-15 | 佛山市顺德区百丽池涂料有限公司 | Low-temperature curing epoxy polyester powdery paint used on surface of bakelite 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 |
-
2014
- 2014-10-31 CN CN201410605511.6A patent/CN104341982A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000265090A (en) * | 1999-03-16 | 2000-09-26 | Kansai Paint Co Ltd | Frictionally electrifiable powder coating composition |
| CN101469147A (en) * | 2008-08-20 | 2009-07-01 | 江苏兰陵高分子材料有限公司 | Friction electrostatic painting infrared ray cured powder paint for electromagnetic wire and lacquered wire, preparation and use thereof |
| CN103509439A (en) * | 2012-06-21 | 2014-01-15 | 佛山市顺德区百丽池涂料有限公司 | Low-temperature curing epoxy polyester powdery paint used on surface of bakelite 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 |
Non-Patent Citations (2)
| Title |
|---|
| 刘登良: "《涂料工艺 第四版 下册》", 31 January 2010, 化学工业出版社 * |
| 袁超树 等: "提高粉末涂料摩擦带电性", 《涂料工业》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105038519A (en) * | 2015-08-26 | 2015-11-11 | 广州擎天材料科技有限公司 | Powder coating used on automotive aluminium wheels and suitable for balance weights to bond and preparation method thereof |
| CN105038519B (en) * | 2015-08-26 | 2016-05-18 | 广州擎天材料科技有限公司 | Automobile aluminum wheel hub powdery paints that a kind of applicable balance weight coheres and preparation method thereof |
| CN105038515A (en) * | 2015-09-07 | 2015-11-11 | 福建万安实业有限公司 | Pure-copper-imitated anti-corrosion powder coating |
| CN105062332A (en) * | 2015-09-08 | 2015-11-18 | 福建万安实业有限公司 | Powder coating with high wear resistance |
| CN105062332B (en) * | 2015-09-08 | 2017-07-07 | 福建万安实业有限公司 | A kind of high-wearing feature powdery paints |
| CN105176335A (en) * | 2015-10-30 | 2015-12-23 | 安徽神剑新材料股份有限公司 | Anti-caking powder coating |
| CN105482615A (en) * | 2015-10-30 | 2016-04-13 | 中南大学 | LDS powdery coating and preparation method thereof |
| CN106634468A (en) * | 2016-10-01 | 2017-05-10 | 燕园众欣纳米科技（北京）有限公司 | Graphene transparent powder coating for tribo gun to spray MDF plate |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150211 |