CN101608085B - Weather resistance powder coating - Google Patents
Weather resistance powder coating Download PDFInfo
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- CN101608085B CN101608085B CN2009101005707A CN200910100570A CN101608085B CN 101608085 B CN101608085 B CN 101608085B CN 2009101005707 A CN2009101005707 A CN 2009101005707A CN 200910100570 A CN200910100570 A CN 200910100570A CN 101608085 B CN101608085 B CN 101608085B
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- powder coating
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- weather resistance
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Abstract
The invention discloses a weather resistant powder coating, which belongs to the technical field of chemical powder coating product. The coating is made by adding tetramethoxy methyl glycoluril, acrylate type flatting agent, inorganic filler, pigment, benzoin and so on based on hydroxyl acrylic resin/ end carboxyl polyester system. Compared with other mostly outdoor powder coating, the invention has better weather resistant ability, and adapts to the surface protection requirement of the outdoor metal product, such as bridge guardrail, outdoor lamps and lanterns or the like.
Description
Technical field
The present invention relates to a kind of Weather-resisting powder coating.
Background technology
At present, the Weather-resisting powder coating that is applied to the metallic substance coating is mainly polyester and polyurethane-type powder coating, though have certain weather resistance, can't satisfy the reload request that is coated with of outdoor high-weatherability.In addition, Weather-resisting powder coating also has fluororesin powder coating and silicone resin powder coating, but this Weather-resisting powder coating of two kinds exists the resin cost high, and that is that all right is ripe for technology, and working condition requires high deficiency.
Therefore, reach needs cheaply, be badly in need of a kind of reload request that is coated with that can satisfy outdoor high-weatherability of exploitation, the weathering resistance powder coating that production cost is low for satisfying weathering resistance.
Summary of the invention
The technical problem that the present invention will solve is the above-mentioned deficiency to prior art, and a kind of weather resistance height, lower-cost Weather-resisting powder coating are provided.
Technical scheme of the present invention is: a kind of Weather-resisting powder coating, and its prescription comprises:
OH value is the Hydroxylated acrylic resin 35%～45% of 35～45mg/a
Acid number is the terminal carboxyl polyester resin 30%～35% of 60～70mgKOH/g
Tetramethoxymethylglycoluril 3%～5%
Propenoate flow agent 0.5%～1.3%
Permanent white 20%～30%
St-yrax 0.5%～1.5%
Weathering resistance powder coating of the present invention can comprise that also weight percent is 1%～10% pigment.
Pigment of the present invention can use organic or inorganic pigment commonly used, and like carbon black, the blue or green orchid of phthalein, permanent violet etc., mainly the color according to coating requires to add by certain synthetic ratio.
The production technique of Weather-resisting powder coating of the present invention is:
Form accurate weighing material by prescription, place high-speed mixer to mix 3～5 minutes;
Mixture is extruded under 90～110 ℃ of temperature with the powder coating forcing machine;
Extruded stock uses the powder coating pulverizing mill to pulverize to median size to be 40～50 microns powder granule; Powder sieves with 180 eye mesh screens, is specification product through thing.
Coating adopts following spraying coating process: and the use high pressure electrostatic painting (60～90KV), 60～80 microns of average coating thicknesses, film maximum and minimum thickness difference are less than 20 microns, and condition of cure is: 190 ℃ of workpiece temperatures, toasted 15～20 minutes.
Advantage of the present invention: 1. the present invention has designed a kind of polyester modification acrylic type powder coating, and weather resistance improves greatly, and QUV-B (accelerated light ageing test) guarantor light rate was enhanced to more than 95% from 50% of traditional polyester powder coating in 480 hours.
2. powder coating cost of the present invention is than the cost low (can reduce about 50%) of fluorocarbon resin powder coating and silicone resin powder coating.
3. to select the vinyl resin of good weatherability and vibrin for use be binder systems for use in the present invention; Be beneficial to solidify through adding 3%～5% tetramethoxymethylglycoluril; 0.5%～1.3% propenoate flow agent improves its flow leveling, improves coating planeness and glossiness, through adding filler permanent white; St-yrax obtains high-weatherability as skimmer and suitable pigment, the coating of excellent appearance.
Embodiment
Through specific embodiment the present invention is done describing in further detail below, but the present invention not only is confined to following examples.
Embodiment 1
Adopt prescription as follows:
OH value is the Hydroxylated acrylic resin 35% of 35mg
Acid number is the terminal carboxyl polyester resin 34.4% of 60mgKOH/g
Tetramethoxymethylglycoluril 3%
Propenoate flow agent 0.8%
Permanent white 25%
St-yrax 0.8%
Carbon black 1%
Form accurate weighing material by prescription, place high-speed mixer to mix 3 minutes; Mixture is extruded under 90 ℃ of temperature with the powder coating forcing machine; Extruded stock uses the powder coating pulverizing mill to pulverize to median size to be 40～50 microns powder granule; Powder sieves with 180 eye mesh screens, is specification product through thing.
To adopt high pressure electrostatic painting by the coating of above-mentioned production technique production, voltage is 60KV, and average film thickness is 60～80 microns, and condition of cure is: 190 ℃ were toasted 20 minutes.
Main spreading property index is following:
Shock resistance >=50kgcm
Bending property≤2mm
QUV-B (480h) protects light rate >=95%
Embodiment 2
Adopt prescription as follows:
OH value is the Hydroxylated acrylic resin 41% of 35mg
Acid number is the terminal carboxyl polyester resin 30% of 60mgKOH/g
Tetramethoxymethylglycoluril 5%
Propenoate flow agent 1.2%
Permanent white 20%
St-yrax 1.5%
Phthalein blue or green blue 0.6%
Permanent violet 0.7%
Form accurate weighing material by prescription, place high-speed mixer to mix 5 minutes; Mixture is extruded under 100 ℃ of temperature with the powder coating forcing machine; Extruded stock uses the powder coating pulverizing mill to pulverize to median size to be 40～50 microns powder granule; Powder sieves with 180 eye mesh screens, is specification product through thing.
To adopt high pressure electrostatic painting by the coating of above-mentioned production technique production, voltage is 60KV, and average film thickness is 60～80 microns, and condition of cure is: 190 ℃ were toasted 20 minutes.
Main spreading property index:
Shock resistance >=50kgcm
Bending property≤2mm
QUV-B (480h) protects light rate >=95%
Claims (2)
1. Weather-resisting powder coating, its prescription comprises:
OH value is the Hydroxylated acrylic resin 35%-45% of 35-45mgKOH/g
Propenoate flow agent 0.5%-1.3%
Permanent white 20%-30%
St-yrax 0.5%-1.5%
It is characterized in that this coating also includes:
Acid number is the terminal carboxyl polyester resin 30%-35% of 60-70mgKOH/g
Tetramethoxymethylglycoluril 3%-5%.
2. Weather-resisting powder coating according to claim 1 is characterized in that: it comprises that also weight percent is the pigment of 1%-10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101005707A CN101608085B (en) | 2009-07-07 | 2009-07-07 | Weather resistance powder coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101005707A CN101608085B (en) | 2009-07-07 | 2009-07-07 | Weather resistance powder coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101608085A CN101608085A (en) | 2009-12-23 |
| CN101608085B true CN101608085B (en) | 2012-06-27 |
Family
ID=41481996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101005707A Expired - Fee Related CN101608085B (en) | 2009-07-07 | 2009-07-07 | Weather resistance powder coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101608085B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102993871A (en) * | 2012-12-19 | 2013-03-27 | 上海邦中新材料有限公司 | Insulating powder coating and preparation method thereof |
| CN102993872A (en) * | 2012-12-19 | 2013-03-27 | 上海邦中新材料有限公司 | Indoor moisture-proof powder coating and preparation method thereof |
| CN103396559B (en) * | 2013-07-26 | 2016-02-17 | 东莞市俊怡化工科技有限公司 | A kind of room temperature is from dry multifuncitonal organosilicon resin and preparation method thereof |
| CN103483953A (en) * | 2013-09-03 | 2014-01-01 | 蚌埠市鸿安精密机械有限公司 | Weather-resistant powder paint |
| CN103497603A (en) * | 2013-09-24 | 2014-01-08 | 安徽锐视光电技术有限公司 | Weather-proof powder coating |
| CN103756523A (en) * | 2013-12-13 | 2014-04-30 | 张家港市双林制墨涂装有限公司 | Antibacterial mildew-resistant powder coating, and preparation method thereof |
| CN104059465A (en) * | 2014-06-03 | 2014-09-24 | 安徽奥邦新材料有限公司 | Heat-insulation powder and preparation method thereof |
| CN104119783A (en) * | 2014-06-27 | 2014-10-29 | 南京屏湖粉末材料有限公司 | Weather-resistant powder coating |
| CN104530408B (en) * | 2015-01-08 | 2016-06-29 | 黄山市向荣新材料有限公司 | Extra-weather-proof polyester resin for powder coating, the powdery paints using this resin and preparation method thereof |
| CN104610835B (en) * | 2015-02-10 | 2017-02-22 | 金华联创塑粉科技有限公司 | Weather-resistant powder paint |
| CN104910659B (en) * | 2015-05-11 | 2018-05-11 | 广德美涂士化工有限公司 | A kind of weatherability modified polyester resin powdery paints |
| CN109627887A (en) * | 2019-01-07 | 2019-04-16 | 佛山市洋昊装饰材料有限公司 | A kind of outdoor imitative oxide powder coating, preparation method and applications |
| CN112389057A (en) * | 2020-10-28 | 2021-02-23 | 合肥华聚微科新材料有限责任公司 | Novel optical diffusion material with multilayer composite microporous structure for flat panel display |
| CN112552804A (en) * | 2020-12-31 | 2021-03-26 | 安徽神剑新材料股份有限公司 | Super-weather-resistant and gas-resistant HAA (polyurethane-acrylate copolymer) cured polyester resin composition and powder coating |
-
2009
- 2009-07-07 CN CN2009101005707A patent/CN101608085B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101608085A (en) | 2009-12-23 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315145 Zhejiang city of Ningbo province Yinzhou District Liansheng Road Economic Development Zone No. 258 Patentee after: Ningbo Partner Powder Coatings Co., Ltd. Address before: 315145 Zhejiang city of Ningbo province Yinzhou District Binhai investment center Liansheng Road Patentee before: Ningbo Partner Powder Coatings Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120627 Termination date: 20180707 |