CN104119783A - Weather-resistant powder coating - Google Patents
Weather-resistant powder coating Download PDFInfo
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- CN104119783A CN104119783A CN201410297441.2A CN201410297441A CN104119783A CN 104119783 A CN104119783 A CN 104119783A CN 201410297441 A CN201410297441 A CN 201410297441A CN 104119783 A CN104119783 A CN 104119783A
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Abstract
The invention discloses a weather-resistant powder coating, comprising the following components by weight ratio: 20-25% of acrylic resin, 40-45% of polyester resin, 15-22% of titanium dioxide, 5-12% of barium sulfate, 3-6% of a curing agent, 0.5-1.5% of a flatting agent, 0.5-1.5% of a brightener and 1% of pigments and fillers. The powder coating layer can be prepared into a film free of a pin hole, and the weather-resistant powder coating is uniform, stable and adjustable in system, and has good heat resistance and weatherability. The artificial accelerated aging time of the film prepared from the powder coating can be over 1000 hours, and meanwhile, the powder coating disclosed by the invention has excellent resistance to chemical corrosion, and can be widely applied to coating of anticorrosive coatings of outdoor structure components such as metal guardrails, railways, transportation facilities of highways and the like.
Description
Technical field
The present invention relates to art of powder coatings, particularly a kind of high-weatherability powder coating.
Background technology
Powder coating is a kind of green coating of non-volatile solvent, have solvent-free, low pollution, material use efficiency is high, the advantages such as energy expenditure is low, be widely used in pipeline, metal, the facility fields such as outdoor structural part, after utilizing resin and solidifying agent heating, there is crosslinking reaction in powder coating, form not molten hard coat, temperature is high again, this coating can only be decomposed, and can be not softening as thermoplastic resin coating, thereby there is stronger mechanical property, therefore member out of doors, as metal guardrail, railway, in highway communication facility, the powder coating that adopt as corrosion protection coating more, but the existence of aromatic oxide group in resin, coating is extremely irritated to ultraviolet ray, so that weathering resistance is not high, easily yellowing in baking or solar radiation process, efflorescence, affect its mechanical property and decorate properties, the coating that particularly long-term exposure was exposed to the sun in summer, be more prone to aging.
Develop at present, be applicable to outdoor powder coating and mainly contain polyester/triglycidyl group isocyanuric acid ester (TGIC) system, polyester/esters of acrylic acid system, polyurethane system and fluorine-containing, silicon system etc., wherein polyester/TGIC type powder coating is that in current powder coating, weathering resistance over-all properties is a kind of preferably, but TGIC has strong skin irritation and potential carinogenicity, is forbidden using in coating by some countries.
Thermosetting acrylic resin is the resin of being made up of esters of acrylic acid and methyl acrylic ester and other olefinic type monomers copolymerization, general relative molecular weight is lower, thermosetting acrylic coating has excellent fullness ratio, gloss, hardness, solvent resistance, weathering resistance, nondiscoloration in the time of high bake, brightness reversion not, a kind of outdoor coating of excellence, but acrylic resin coating leveling is poor, in coating, easily form pin hole, affect coating performance, therefore develop a kind of weathering resistance strong, the weathering resistance powder coating of good leveling property is this area technical problem urgently to be resolved hurrily always.
Summary of the invention
For the problems referred to above, provide a kind of weather resistance strong, the powder coating that mechanical characteristic is good, is applied to the coating of the outdoor structural parts such as metal guardrail, railway, highway communication facility, and the present invention is achieved in that
A kind of high-weatherability powder coating, it forms component and weight ratio is: acrylic resin 20-25%, vibrin 40-45%, titanium dioxide 15-22%, barium sulfate 5-12%, solidifying agent 3-6%, flow agent 0.5-1.5%, brightening agent 0.5-1.5%, color stuffing 1%.
Preferably, in the present invention, described acrylic resin is Hydroxylated acrylic resin.
Preferably, in the present invention, described vibrin is P885.
Preferably, in the present invention, described flow agent is GLP-503, and brightening agent is TL701.
Preferably, in the present invention, described solidifying agent is TEFC.
Beneficial effect of the present invention is, when acrylic resin, vibrin and solidifying agent TEFC are crosslinked, paint having no volatile substances produces, can make the film of free of pinholes, and system homogeneous, stable, adjustable, there is good heat-resisting and weather resistance, more than the coating artificial accelerated aging time that adopts powder coating of the present invention to prepare can reach 1000h, powder coating of the present invention has excellent resist chemical performance simultaneously, can be widely used in being applied in the preservative coat coating of the outdoor structural parts such as metal guardrail, railway, highway communication facility.
Embodiment
Embodiment 1
A kind of high-weatherability powder coating, it forms component and weight ratio is: Hydroxylated acrylic resin 20%, vibrin P885 45%, titanium dioxide 22%, barium sulfate 8%, solidifying agent TEFC 3%, flow agent GLP-503 0.5%, brightening agent TL701 0.5%, color stuffing 1%.
Embodiment 2
A kind of high-weatherability powder coating, it forms component and weight ratio is: Hydroxylated acrylic resin 25%, vibrin P885 40%, titanium dioxide 20%, barium sulfate 5%, solidifying agent TEFC 6%, flow agent GLP-503 1.5%, brightening agent TL701 1.5%, color stuffing 1%.
Embodiment 3
A kind of high-weatherability powder coating, it forms component and weight ratio is: Hydroxylated acrylic resin 25%, vibrin P885 40%, titanium dioxide 15%, barium sulfate 12%, solidifying agent TEFC 5%, flow agent GLP-503 1%, brightening agent TL701 1%, color stuffing 1%.
Preparation technology:
(1) each raw material is placed in to the speed mixed 3min of mixing machine with 800rpm according to ratio of components;
(2) mixed raw material is melt extruded to feeding section temperature 45 C, 95 DEG C of melt zone temperature, 115 DEG C of discharging section temperature by screw extrusion press;
(3) molten materials, through tabletting machine compressing tablet, is controlled thickness at 3mm, sends in pulverizing mill and pulverizes through fragmentation, crosses 180 mesh sieves.
The high-weatherability powder coating that embodiment 1-3 is obtained carries out salient features detection, and powder property detected result is as shown in table 1:
Table 1 embodiment 1-3 powder property
The high-weatherability powder coating that embodiment 1-3 is obtained, be coated on the rust cleaning thick at 0.8mm, oil removing cold-rolled steel sheet with the method for electrostatic spraying respectively, coat-thickness 60 μ m, the model range estimation film pin hole with legal system for coating 100 μ m, coating is carried out to performance test, and result is as shown in table 2:
Table 2 embodiment 1-3 coating performance test result
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, and these improve and also should be considered as protection scope of the present invention.
Claims (5)
1. a high-weatherability powder coating, it forms component and weight ratio is: acrylic resin 20-25%, vibrin 40-45%, titanium dioxide 15-22%, barium sulfate 5-12%, solidifying agent 3-6%, flow agent 0.5-1.5%, brightening agent 0.5-1.5%, color stuffing 1%.
2. high-weatherability powder coating according to claim 1, is characterized in that, described acrylic resin is Hydroxylated acrylic resin.
3. high-weatherability powder coating according to claim 2, is characterized in that, described vibrin is P885.
4. according to the high-weatherability powder coating one of claim 1-3 Suo Shu, it is characterized in that, described flow agent is GLP-503, and brightening agent is TL701.
5. high-weatherability powder coating according to claim 4, is characterized in that, described solidifying agent is TEFC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410297441.2A CN104119783A (en) | 2014-06-27 | 2014-06-27 | Weather-resistant powder coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410297441.2A CN104119783A (en) | 2014-06-27 | 2014-06-27 | Weather-resistant powder coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104119783A true CN104119783A (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410297441.2A Pending CN104119783A (en) | 2014-06-27 | 2014-06-27 | Weather-resistant powder coating |
Country Status (1)
| Country | Link |
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| CN (1) | CN104119783A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104497810A (en) * | 2014-12-31 | 2015-04-08 | 山东朗法博粉末涂装科技有限公司 | Outdoor MDF powder coating and application thereof |
| CN106590365A (en) * | 2016-12-14 | 2017-04-26 | 广东雅佳新型节能高分子材料有限公司 | Heavy anticorrosive powder coating |
| CN106752443A (en) * | 2016-12-12 | 2017-05-31 | 衡阳山泰化工有限公司 | A kind of high-weatherability powdery paints |
| CN110582547A (en) * | 2017-05-05 | 2019-12-17 | 老虎干漆美国有限公司 | Low gloss mixed powder coatings |
| 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 |
| CN114184538A (en) * | 2021-12-02 | 2022-03-15 | 攀钢集团重庆钛业有限公司 | Method for testing weather resistance of accelerated titanium dioxide in PP sample plate and PP sample plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4185045A (en) * | 1977-02-26 | 1980-01-22 | Kansai Paint Company, Limited | Powdery coating composition |
| CN101608085A (en) * | 2009-07-07 | 2009-12-23 | 宁波市派特勒粉末涂料有限公司 | Weather-resisting powder coating |
| CN101787239A (en) * | 2009-12-31 | 2010-07-28 | 广东银洋树脂有限公司 | Method for preparing environment-friendly powder coating resin |
| CN102898933A (en) * | 2012-09-28 | 2013-01-30 | 广州擎天实业有限公司 | High weather-proof and corrosion-resistant powder paint for satellite earth antenna and preparation method thereof |
-
2014
- 2014-06-27 CN CN201410297441.2A patent/CN104119783A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4185045A (en) * | 1977-02-26 | 1980-01-22 | Kansai Paint Company, Limited | Powdery coating composition |
| CN101608085A (en) * | 2009-07-07 | 2009-12-23 | 宁波市派特勒粉末涂料有限公司 | Weather-resisting powder coating |
| CN101787239A (en) * | 2009-12-31 | 2010-07-28 | 广东银洋树脂有限公司 | Method for preparing environment-friendly powder coating resin |
| CN102898933A (en) * | 2012-09-28 | 2013-01-30 | 广州擎天实业有限公司 | High weather-proof and corrosion-resistant powder paint for satellite earth antenna and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104497810A (en) * | 2014-12-31 | 2015-04-08 | 山东朗法博粉末涂装科技有限公司 | Outdoor MDF powder coating and application thereof |
| CN106752443A (en) * | 2016-12-12 | 2017-05-31 | 衡阳山泰化工有限公司 | A kind of high-weatherability powdery paints |
| CN106590365A (en) * | 2016-12-14 | 2017-04-26 | 广东雅佳新型节能高分子材料有限公司 | Heavy anticorrosive powder coating |
| CN110582547A (en) * | 2017-05-05 | 2019-12-17 | 老虎干漆美国有限公司 | Low gloss mixed powder coatings |
| CN110582547B (en) * | 2017-05-05 | 2021-08-17 | 老虎干漆美国有限公司 | Low gloss mixed powder coatings |
| 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 |
| CN114184538A (en) * | 2021-12-02 | 2022-03-15 | 攀钢集团重庆钛业有限公司 | Method for testing weather resistance of accelerated titanium dioxide in PP sample plate and PP sample plate |
| CN114184538B (en) * | 2021-12-02 | 2024-03-01 | 攀钢集团重庆钛业有限公司 | Method for testing weather resistance of accelerated titanium dioxide in PP template and PP template |
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Effective date of registration: 20160125 Address after: 215300, No. 335 middle Lu Bai Lu, Yushan Town, Suzhou City, Jiangsu, Kunshan Applicant after: Kunshan Dongda Zhihui Technology Consulting Co., Ltd. Address before: 211211, Jiangsu Nanjing District, Lishui Province East screen Town Industrial Park Applicant before: NANJING PINGHU POWDER MATERIALS CO., LTD. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141029 |