CN1739866A - Electrostatic spraying process of composite coating comprising two or more kinds of paint powder on substrate - Google Patents
Electrostatic spraying process of composite coating comprising two or more kinds of paint powder on substrate Download PDFInfo
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- CN1739866A CN1739866A CN 200410041792 CN200410041792A CN1739866A CN 1739866 A CN1739866 A CN 1739866A CN 200410041792 CN200410041792 CN 200410041792 CN 200410041792 A CN200410041792 A CN 200410041792A CN 1739866 A CN1739866 A CN 1739866A
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Abstract
The composite coating process features that after the base material surface is coated with anticorrosive primer of powder paint, one or several layers of functional powder coating are coated on the primer. Specifically, the composite coating process includes the steps of: pre-treatment, preheating, spraying primer electrostatically, gelatinizing, spraying facing layer(s) electrostatically and curing. The present invention has the advantages of simple and feasible technological process, high efficiency, and excellent coating performance.
Description
Technical field
The present invention relates to a kind of on base material application functional powder coating composite coating design and realize technology, belong to the technical field of powdery paints electrostatic coating.
Background technology
Thermosetting powder coating and application techniques with its excellent coating performance and favorable social and economic benefits, have been obtained fast development from the exploitation of five sixties of last century so far, nowadays still keep the growing trend more than 10%.Though powdery paints and coating quality thereof have obtained people's generally acceptance, but the application techniques personnel still constantly pay close attention to the importance of coating process to the powder coating quality influence, the steel construction piece that the workpiece of those high performance corrosion-resistant, weather-proof requirements such as all kinds of chemical pipeline, coastal area are used, the outdoor metallic facility that the plateau desert area is used, the powder coating of common process construction causes whole coating corrosion protection ability significantly to descend because of the local defect influence, be difficult to realize the protection effect of expecting, thereby influenced the application of powdery paints and application techniques.
To this, the technical staff has successively taked the kinds of protect measure, is coated with as thick; As steel construction piece being electroplated, is carried out again after the hot dip powder spraying; As coating etc., and obtained certain effect in conjunction with other anti-corrosion materials such as polyethylene.But also brought various problems thereupon: thick be coated with brought expensive, quality is not good; Electroplate, when hot dip brings serious environmental pollution, also significantly improved processing cost; Coating processing cost height, the quality instability, the range of work is little.
Summary of the invention
The purpose of this invention is to provide and a kind ofly on base material, form the functional organic coating that is compounded with through electrostatic spraying, as technology two-layer, three layers or multilayer by two or more powdery paints.
The present invention realizes with following technical scheme: at the environment for use requirement of workpiece, take the appropriate layer function design that is coated with, as heavy antiseptic property+high-weatherability energy; Heavy antiseptic property+self-cleaning performance; Heavy antiseptic property+bactericidal property; Excellent tack+outstanding ornamental etc. realizes that by the composite coating processing technology promptly two or more powdery paints of electrostatic spraying forms composite coating on base material.
Its concrete technology is:
Two coating process: to pretreatment of base material → base material is preheated to 140-160 ℃ → bottom electrostatic spraying → gelling → surface layer electrostatic spraying → curing;
Multilayer spraying: to pretreatment of base material → with base material preheating → bottom spraying → gelling → second layer spraying → gelling → ... spraying → the curing of → surface layer.
Its number of plies is set as required.
Described powdery paints is a thermosetting powder coating, comprises pure epoxy, epoxy/the get thermosetting powder coating of general functions such as ester mixing, pure polyester, polyurethane, acrylic resin; Also comprise the thermosetting powder coating after its modification and have the thermosetting powder coating of special decoration defencive function.
What described bottom spraying was used is the thermosetting powder coating with antiseptic property.
The spraying of described surface layer is used is functional thermosetting powder coating according to environmental selection.
The thickness of described bottom is 50-70um;
The thickness of described surface layer is 60-105um.
Metallic substrate surface roughness after sandblast or ball blast pre-treatment should reach Sa2.5 (ISO8501.1,1988) above requirement should meet GB/T 11376-1997 " the phosphate conversion film of metal " requirement through the metallic substrate surface film quality of phosphatization, chromaking pre-treatment.Workpiece after pre-treatment carries out composite coating application processing by spraying coating process, and workpiece naturally cools to room temperature through fully solidifying, and behind the placement 24h, measures coating performance.
Salt spray test is measured by the FQY-010 type salt spray test chamber that laboratory apparatus factory in Shanghai produces, artificial accelerated aging test is measured by the Q-UV artificial accelerated aging test instrument that U.S. ATLAS company produces, aberration is surveyed color matching system with the ALTAIR company computer and is measured, thickness is measured with the two probe calibrators of 600B type that German BYK company produces, surface contact angle is measured by the OCA video optics contact angle measurement of German Dataphysics company, and other performances are pressed GB/T 18226-2000 " freeway traffic engineering steel member aseptic technic condition " respectively, the regulation of GB/T 5237.4-2000 " aluminum alloy building section the 4th part powder spraying section bar " is measured.
Its test result is: corrosion-resistant index all is better than the industry standard HG/T 3668-2000 of existing zinc rich primer, and the coating salt-fog resistant test surpasses 2000 hours, and weather-proof index all is better than GB/T 18226-2000 " freeway traffic engineering steel member aseptic technic condition ".
The invention has the beneficial effects as follows:
The present invention's design and simple for process, economical and efficient, the coating performance excellence, process is pollution-free, the abundant and low price in raw material source.
The specific embodiment
Further illustrate the solution of the present invention and effect below in conjunction with embodiment.
Embodiment 1
Product is an express-way guard-rail plates, be coated with layer function be designed to high anticorrosion+high weather-proof, technology be pair coating process.Bottom adopts epoxy resin and zinc-enriched heavy anti-corrosive, and surface layer adopts the freeway guardrail proprietary powder coatings.Metal base reaches Sa2.5 (ISO8501.1 through sandblast or ball blast pre-treatment rear surface roughness, 1988) above requirement, by preheating, workpiece temperature reaches 140-160 ℃, the spraying epoxy resin and zinc-enriched heavy anti-corrosive, thickness 50-70um, through 200 ℃ of 3min semi-solid preparations, spraying freeway guardrail proprietary powder coatings, thickness 85-105um, solidify through 200 ℃ of 10min, natural air cooling is to room temperature, places sampling and measuring behind the 24h.
Its test result is: coating salt-fog resistant test 〉=2000h, artificial accelerated aging time 〉=other performance indications of 2000h coating are all above the requirement of GB/T 18226-2000 " freeway traffic engineering steel member aseptic technic condition ".
Embodiment 2
Product is the garden lamppost, and material is a cast aluminium, be coated with layer function be designed to high anticorrosion+high decoration+transparent protection, technology is three coating process.Bottom adopts epoxy resin and zinc-enriched heavy anti-corrosive, and the high-decoration metal powder coating is adopted in the intermediate layer, and surface layer adopts the weatherability transparent powder paint.Metal base is after sandblast or ball blast or polishing pre-treatment, and by preheating, workpiece temperature reaches 140-160 ℃, the spraying epoxy resin and zinc-enriched heavy anti-corrosive, thickness 50-70um is through 200 ℃ of 2min gellings, spraying high-decoration powdery paints, thickness 50-70um, through 200 ℃ of 2min gellings, spraying weatherability transparent powder paint, thickness 50-70um, solidify through 200 ℃ of 10min, natural air cooling is to room temperature, places sampling and measuring behind the 24h.
Its test result is: coating salt-fog resistant test 〉=3000h, and artificial accelerated aging time 〉=1000h, other performances of coating are all above the requirement of GB/T 5237.4-2000 " aluminum alloy building section the 4th part powder spraying section bar ".
Embodiment 3
Product is an express-way guard-rail plates, be coated with layer function be designed to high anticorrosion+high weatherability self-cleaning, technology be pair coating process.Bottom adopts epoxy resin and zinc-enriched heavy anti-corrosive, and surface layer adopts the special-purpose automatically cleaning powdery paints of freeway guardrail.Metal base reaches Sa2.5 through sandblast or ball blast pre-treatment rear surface roughness, and (ISO 8501.1,1988) above requirement, by preheating, workpiece temperature reaches 140-160 ℃, the spraying epoxy resin and zinc-enriched heavy anti-corrosive, thickness 50-70um, through 200 ℃ of 3min semi-solid preparations, the special-purpose automatically cleaning powdery paints of spraying freeway guardrail, thickness 85-105um, solidify through 200 ℃ of 10min, natural air cooling is to room temperature, places sampling and measuring behind the 24h.
Its test result is: the coating salt-fog resistant test surpasses 3000h, artificial accelerated aging time 〉=1200h, coating is to surface contact angle 〉=121 of water °, to resolution ratio 〉=90% of greasy dirt, other performances are all above GB/T 18226-2000 " freeway traffic engineering steel member aseptic technic condition " requirement.
Claims (6)
1, a kind of on base material the technology of two or more powdery paints composite coating of electrostatic spraying, it is characterized in that being coated with the anticorrosion bottom of powdery paints be housed at substrate surface, be coated with the functional powder paint coatings that one or more layers is housed above the bottom; Its concrete technology is: base material is carried out pre-treatment → base material is preheated to 140-160 ℃ → bottom electrostatic spraying → gelling → surface layer electrostatic spraying → curing.
2, according to claim 1 a kind of on base material the technology of two kinds of electrostatic sprayings and two or more powdery paints composite coatings, it is characterized in that the overbrushing layer process is: pretreatment of base material → base material be preheated to 140-160 ℃ → bottom spraying → gelling → second layer spraying → gelling → ... spraying → the curing of → surface layer.
3, coating process according to claim 1 and 2; it is characterized in that described powdery paints is a thermosetting powder coating; comprise the thermosetting powder coating of pure epoxy, epoxy/polyester mixing, pure polyester, polyurethane, acrylic resin, general function, also comprise thermosetting powder coating thermosetting powder coating after its modification and special decoration defencive function.
4, coating process according to claim 1 and 2 is characterized in that subbing is an anticorrosive paint, and surface layer and intermediate layer are functional powder coating.
5, coating process according to claim 1 and 2, the thickness that it is characterized in that bottom is 50-70um.
6, technology according to claim 1 and 2, the thickness that it is characterized in that surface layer is 60-105um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410041792 CN1739866A (en) | 2004-08-23 | 2004-08-23 | Electrostatic spraying process of composite coating comprising two or more kinds of paint powder on substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410041792 CN1739866A (en) | 2004-08-23 | 2004-08-23 | Electrostatic spraying process of composite coating comprising two or more kinds of paint powder on substrate |
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| CN1739866A true CN1739866A (en) | 2006-03-01 |
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| CN 200410041792 Pending CN1739866A (en) | 2004-08-23 | 2004-08-23 | Electrostatic spraying process of composite coating comprising two or more kinds of paint powder on substrate |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913433A (en) * | 2010-07-20 | 2010-12-15 | 哈尔滨飞机工业集团有限责任公司 | Surface treatment method for composite material blade of helicopter |
| CN102052543A (en) * | 2009-11-10 | 2011-05-11 | 上海海隆防腐技术工程有限公司 | Composite polyethylene (PE) powder thermally sprayed anticorrosion coating for petroleum and natural gas pipe |
| CN101660159B (en) * | 2008-08-29 | 2011-09-28 | 海洋王照明科技股份有限公司 | Preservative treatment method for thin carbon steel plate |
| CN101574688B (en) * | 2008-05-06 | 2012-01-25 | 朱德德 | Electrostatic painting process of energy-saving lamp shade |
| CN102574152A (en) * | 2009-09-28 | 2012-07-11 | 开利公司 | Dual powder coating method and system |
| CN102729553A (en) * | 2012-06-28 | 2012-10-17 | 西安理工大学 | High polymer and ceramic composite coat, and coating method thereof |
| CN102787654A (en) * | 2012-08-08 | 2012-11-21 | 鹤山市鸿图铁艺实业有限公司 | Technology for anti-corrosion treatment of all components of assembled iron railing product |
| CN102858469A (en) * | 2010-04-29 | 2013-01-02 | 阿克佐诺贝尔国际涂料股份有限公司 | Method for applying a powder coating |
| CN103506264A (en) * | 2012-06-28 | 2014-01-15 | 吉家银 | Treating and spraying formula enabling surface to be free of rust |
| US9417018B2 (en) | 2012-03-15 | 2016-08-16 | Carrier Corporation | Multi-layer protective coating for an aluminum heat exchanger |
| CN106824714A (en) * | 2016-12-29 | 2017-06-13 | 苏州市相城区星火粉沫涂料厂 | A kind of antibacterial corrosion-and high-temp-resistant guard and its production technology |
| CN107413598A (en) * | 2017-08-22 | 2017-12-01 | 泉州市万家宝儿童用品股份有限公司 | A kind of electrostatic powder spraying coating process of children dinning chair accessory |
| CN109049264A (en) * | 2018-08-09 | 2018-12-21 | 东易日盛智能家居科技有限公司 | A kind of Furniture panel powder spray structure and spraying method |
| CN111570237A (en) * | 2020-05-27 | 2020-08-25 | 四川金城栅栏工程有限公司 | Fence anticorrosion process and anticorrosion fence produced by same |
| CN112259901A (en) * | 2019-07-03 | 2021-01-22 | 比亚迪股份有限公司 | Gluing diaphragm for lithium ion battery and preparation method and application thereof |
| CN113042341A (en) * | 2021-03-01 | 2021-06-29 | 安徽壹叁高分子材料有限公司 | High-corrosion-resistance high-weather-resistance gas special pipeline multilayer powder coating process |
| CN113533192A (en) * | 2021-06-25 | 2021-10-22 | 上海建冶科技股份有限公司 | Method for inhibiting microbial corrosion of water pipeline |
| CN114106668A (en) * | 2021-10-25 | 2022-03-01 | 安徽华辉塑业科技股份有限公司 | Novel nanoscale powder coating for airplanes |
| US11904355B2 (en) | 2012-03-21 | 2024-02-20 | The Sherwin-Williams Company | Two-coat single cure powder coating |
-
2004
- 2004-08-23 CN CN 200410041792 patent/CN1739866A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101574688B (en) * | 2008-05-06 | 2012-01-25 | 朱德德 | Electrostatic painting process of energy-saving lamp shade |
| CN101660159B (en) * | 2008-08-29 | 2011-09-28 | 海洋王照明科技股份有限公司 | Preservative treatment method for thin carbon steel plate |
| US8993070B2 (en) | 2009-09-28 | 2015-03-31 | Carrier Corporation | Dual powder coating method for aluminum substrates |
| CN102574152A (en) * | 2009-09-28 | 2012-07-11 | 开利公司 | Dual powder coating method and system |
| CN102052543A (en) * | 2009-11-10 | 2011-05-11 | 上海海隆防腐技术工程有限公司 | Composite polyethylene (PE) powder thermally sprayed anticorrosion coating for petroleum and natural gas pipe |
| CN105710021A (en) * | 2010-04-29 | 2016-06-29 | 阿克佐 诺贝尔国际涂料股份有限公司 | Method For Applying A Powder Coating |
| CN102858469A (en) * | 2010-04-29 | 2013-01-02 | 阿克佐诺贝尔国际涂料股份有限公司 | Method for applying a powder coating |
| CN101913433A (en) * | 2010-07-20 | 2010-12-15 | 哈尔滨飞机工业集团有限责任公司 | Surface treatment method for composite material blade of helicopter |
| CN101913433B (en) * | 2010-07-20 | 2013-07-10 | 哈尔滨飞机工业集团有限责任公司 | Surface treatment method for composite material blade of helicopter |
| US9417018B2 (en) | 2012-03-15 | 2016-08-16 | Carrier Corporation | Multi-layer protective coating for an aluminum heat exchanger |
| US11904355B2 (en) | 2012-03-21 | 2024-02-20 | The Sherwin-Williams Company | Two-coat single cure powder coating |
| US11925957B2 (en) | 2012-03-21 | 2024-03-12 | The Sherwin-Williams Company | Two-coat single cure powder coating |
| CN103506264A (en) * | 2012-06-28 | 2014-01-15 | 吉家银 | Treating and spraying formula enabling surface to be free of rust |
| CN102729553B (en) * | 2012-06-28 | 2015-11-18 | 西安理工大学 | A kind of high polymer and ceramic composite coating and painting method thereof |
| CN102729553A (en) * | 2012-06-28 | 2012-10-17 | 西安理工大学 | High polymer and ceramic composite coat, and coating method thereof |
| CN102787654B (en) * | 2012-08-08 | 2014-12-17 | 鹤山市鸿图铁艺实业有限公司 | Technology for anti-corrosion treatment of all components of assembled iron railing product |
| CN102787654A (en) * | 2012-08-08 | 2012-11-21 | 鹤山市鸿图铁艺实业有限公司 | Technology for anti-corrosion treatment of all components of assembled iron railing product |
| CN106824714A (en) * | 2016-12-29 | 2017-06-13 | 苏州市相城区星火粉沫涂料厂 | A kind of antibacterial corrosion-and high-temp-resistant guard and its production technology |
| CN107413598A (en) * | 2017-08-22 | 2017-12-01 | 泉州市万家宝儿童用品股份有限公司 | A kind of electrostatic powder spraying coating process of children dinning chair accessory |
| CN112676132A (en) * | 2017-08-22 | 2021-04-20 | 泉州市万家宝儿童用品股份有限公司 | Three-layer composite coating of child dining chair accessory and spraying process thereof |
| CN112676132B (en) * | 2017-08-22 | 2022-07-19 | 泉州市万家宝儿童用品股份有限公司 | Three-layer composite coating of child dining chair accessory and spraying process thereof |
| CN109049264A (en) * | 2018-08-09 | 2018-12-21 | 东易日盛智能家居科技有限公司 | A kind of Furniture panel powder spray structure and spraying method |
| CN112259901A (en) * | 2019-07-03 | 2021-01-22 | 比亚迪股份有限公司 | Gluing diaphragm for lithium ion battery and preparation method and application thereof |
| CN112259901B (en) * | 2019-07-03 | 2022-03-18 | 比亚迪股份有限公司 | Gluing diaphragm for lithium ion battery and preparation method and application thereof |
| CN111570237A (en) * | 2020-05-27 | 2020-08-25 | 四川金城栅栏工程有限公司 | Fence anticorrosion process and anticorrosion fence produced by same |
| CN113042341A (en) * | 2021-03-01 | 2021-06-29 | 安徽壹叁高分子材料有限公司 | High-corrosion-resistance high-weather-resistance gas special pipeline multilayer powder coating process |
| CN113533192A (en) * | 2021-06-25 | 2021-10-22 | 上海建冶科技股份有限公司 | Method for inhibiting microbial corrosion of water pipeline |
| CN114106668A (en) * | 2021-10-25 | 2022-03-01 | 安徽华辉塑业科技股份有限公司 | Novel nanoscale powder coating for airplanes |
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