CN103567131A - Method for coating surface of plastic - Google Patents
Method for coating surface of plastic Download PDFInfo
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- CN103567131A CN103567131A CN201310498856.1A CN201310498856A CN103567131A CN 103567131 A CN103567131 A CN 103567131A CN 201310498856 A CN201310498856 A CN 201310498856A CN 103567131 A CN103567131 A CN 103567131A
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Abstract
The invention relates to a method for coating the surface of a plastic. The method comprises the following steps: after the surface of the plastic is coated with water-based primer, the coated surface of the plastic is coated with water-based substrate coating, and the uncured coated surface of the plastic is further coated with varnish coating; the three layers of films are baked simultaneously to be cured. The sufficient drying and curing can be achieved even if the films are baked at low temperature, and multiply layers of films with excellent adhesion, water resistance, durability, re-coating adhesion and the like on the surface of the plastic are formed on the surface of a plastic finished product.
Description
Technical field
The present invention relates to field of high polymer material processing, particularly relate to and a kind ofly under low-temperature bake condition, can guarantee the coating process to the frosting of filming of the excellences such as the tack on plastic product surface, resistance to water, durability.
Background technology
Plastic product is widely used as the in-built exterior member of car body, coating process as this plastic product, existing known employing three is coated with one and dries the coating process of mode,, successively after application aqueous priming paint, water-borne base coating and varnish paint, heat and toast simultaneously and solidify 3 coating films.
From saving the energy, consider, in above-mentioned coating process, attempt carrying out baking temperature in the method for the low-temperature setting below 100 ℃.Yet, for the baking under such low temperature, exist easily by aqueous priming paint, the formed interior residual moisture of filming of water-borne base coating, and, because curability is insufficient and the problem that cohesion is peeled off occurs in base coating film.Particularly aqueous priming paint layer cannot obtain sufficient drying property, curability when low-temperature bake.
Summary of the invention
The object of this invention is to provide a kind of technical scheme, in three painting one baking modes, carry out the low-temperature bake below 100 ℃, can form the coating process of the frosting of filming of the excellences such as tack to frosting, resistance to water, durability.
The present invention is achieved by the following technical solutions:
A coating process for frosting, on frosting after application aqueous priming paint, application aqueous base bottom coating on its painting face, further application varnish coat coating on its uncured painting face, toasts formed 3 coating films simultaneously it is solidified;
It is resin and aqueous acrylic acid series resin that aqueous priming paint contains water polyolefin, and water polyolefin is that the weight ratio of resin and aqueous acrylic acid series resin is 5:4;
The water-borne acrylic resin that aqueous base bottom coating contains waterborne polyurethane resin, hydroxyl and aqueous polyester resin and melmac, wherein, the weight ratio of the water-borne acrylic resin of waterborne polyurethane resin, hydroxyl and aqueous polyester resin and melmac is 1:2:1; The water-borne acrylic resin of described hydroxyl and the weight ratio of aqueous polyester resin are 3:2;
The resin that varnish coat coating contains hydroxyl and isocyanate crosslinking, described isocyanate crosslinking comprises and has the polyisocyanate compounds of urea diketone structure and the compound more than tripolymer of vulcabond in the scope of counting 1:3 with solid constituent weight ratio.
Described melmac is butyl/methyl complex etherified melamine resin, and has the weight average molecular weight in 1500～3000 scopes.
The invention has the beneficial effects as follows:
The method of drying 3 coating films of mode application aqueous priming paint, aqueous base bottom coating and varnish paint by three paintings one, even if carry out low-temperature bake, also can obtain sufficient drying property, curability, and can become on surface to form the excellent multilayer film such as the tack of frosting, resistance to water, durability and recoat tack at plastics.
The specific embodiment
Describe by the following examples technical scheme of the present invention in detail, should be understood that, following embodiment is only exemplary, only can be used for explaining and technical scheme of the present invention being described, and can not to be interpreted as is the restriction to technical solution of the present invention.
In technical scheme of the present invention, plastics are prior art, for the production of the equal applicable technical solution of the present invention of the material of vehicle and electrical equipment coverboard.
A coating process for frosting, on frosting after application aqueous priming paint, application aqueous base bottom coating on its painting face, further application varnish coat coating on its uncured painting face, toasts formed 3 coating films simultaneously it is solidified;
It is resin and aqueous acrylic acid series resin that aqueous priming paint contains water polyolefin, and water polyolefin is that the weight ratio of resin and aqueous acrylic acid series resin is 5:4.
Water polyolefin is resin, can use the resin that imports the hydrophilic radicals such as carboxyl using olefin polymer as main skeleton, in its molecule and form.
Aqueous acrylic acid series resin, the monomer mixture that can consist of containing the polymerism unsaturated monomer of hydrophilic radical and other polymerism unsaturated monomer that at least a portion is acrylic monomer carboxylic polymerism unsaturated monomer etc. carries out the water soluble acrylic resin that copolymerization forms, weight average molecular weight is 50000～70000.
The water-borne acrylic resin that aqueous base bottom coating contains waterborne polyurethane resin, hydroxyl and aqueous polyester resin and melmac, wherein, the weight ratio of the water-borne acrylic resin of waterborne polyurethane resin, hydroxyl and aqueous polyester resin and melmac is 1:2:1; The water-borne acrylic resin of described hydroxyl and the weight ratio of aqueous polyester resin are 3:2;
The resin that varnish coat coating contains hydroxyl and isocyanate crosslinking, described isocyanate crosslinking comprises and has the polyisocyanate compounds of urea diketone structure and the compound more than tripolymer of vulcabond in the scope of counting 1:3 with solid constituent weight ratio.
Described melmac is butyl/methyl complex etherified melamine resin, and has the weight average molecular weight in 1500～3000 scopes.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification and replacement to these embodiment, scope of the present invention is required and is equal to limit by appended wooden fork profit.
Claims (2)
1. the coating process of a frosting, it is characterized in that: on frosting after application aqueous priming paint, application aqueous base bottom coating on its painting face, further application varnish coat coating on its uncured painting face, toasts formed 3 coating films simultaneously it is solidified;
It is resin and aqueous acrylic acid series resin that aqueous priming paint contains water polyolefin, and water polyolefin is that the weight ratio of resin and aqueous acrylic acid series resin is 5:4;
The water-borne acrylic resin that aqueous base bottom coating contains waterborne polyurethane resin, hydroxyl and aqueous polyester resin and melmac, wherein, the weight ratio of the water-borne acrylic resin of waterborne polyurethane resin, hydroxyl and aqueous polyester resin and melmac is 1:2:1; The water-borne acrylic resin of described hydroxyl and the weight ratio of aqueous polyester resin are 3:2;
The resin that varnish coat coating contains hydroxyl and isocyanate crosslinking, described isocyanate crosslinking comprises and has the polyisocyanate compounds of urea diketone structure and the compound more than tripolymer of vulcabond in the scope of counting 1:3 with solid constituent weight ratio.
2. the coating process of frosting according to claim 1, is characterized in that: described melmac is butyl/methyl complex etherified melamine resin, and has the weight average molecular weight in 1500～3000 scopes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498856.1A CN103567131A (en) | 2013-10-21 | 2013-10-21 | Method for coating surface of plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498856.1A CN103567131A (en) | 2013-10-21 | 2013-10-21 | Method for coating surface of plastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103567131A true CN103567131A (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310498856.1A Pending CN103567131A (en) | 2013-10-21 | 2013-10-21 | Method for coating surface of plastic |
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| CN (1) | CN103567131A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105086782A (en) * | 2015-08-25 | 2015-11-25 | 中华制漆（深圳）有限公司 | PP (polypropylene) protective coating and preparation, application method and application thereof |
| CN107793903A (en) * | 2017-09-26 | 2018-03-13 | 中车青岛四方机车车辆股份有限公司 | A kind of coating composition and its application for being used to repair rubber floor covering cloth |
| CN107828325A (en) * | 2017-12-08 | 2018-03-23 | 马鞍山合力仪表有限责任公司 | A kind of pigmented finiss applied on plastics instrument board |
| CN111842074A (en) * | 2020-07-31 | 2020-10-30 | 太仓市天丝利塑化有限公司 | Electroplating-imitating spraying process for processing automotive upholstery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528362A (en) * | 2006-10-18 | 2009-09-09 | 关西涂料株式会社 | Method for coating plastic molded article |
-
2013
- 2013-10-21 CN CN201310498856.1A patent/CN103567131A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101528362A (en) * | 2006-10-18 | 2009-09-09 | 关西涂料株式会社 | Method for coating plastic molded article |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105086782A (en) * | 2015-08-25 | 2015-11-25 | 中华制漆（深圳）有限公司 | PP (polypropylene) protective coating and preparation, application method and application thereof |
| CN105086782B (en) * | 2015-08-25 | 2017-07-21 | 中华制漆（深圳）有限公司 | PP protective coatings and its preparation, application method and application |
| CN107793903A (en) * | 2017-09-26 | 2018-03-13 | 中车青岛四方机车车辆股份有限公司 | A kind of coating composition and its application for being used to repair rubber floor covering cloth |
| CN107793903B (en) * | 2017-09-26 | 2020-01-14 | 中车青岛四方机车车辆股份有限公司 | Coating composition for repairing rubber floor cloth and application thereof |
| CN107828325A (en) * | 2017-12-08 | 2018-03-23 | 马鞍山合力仪表有限责任公司 | A kind of pigmented finiss applied on plastics instrument board |
| CN111842074A (en) * | 2020-07-31 | 2020-10-30 | 太仓市天丝利塑化有限公司 | Electroplating-imitating spraying process for processing automotive upholstery |
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| ASS | Succession or assignment of patent right |
Owner name: NINGBO WANCHANGSHUN PROTECTIVE EQUIPMENT CO., LTD. Free format text: FORMER OWNER: HUANG XUANFEI Effective date: 20140328 |
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Free format text: CORRECT: ADDRESS; FROM: 315177 NINGBO, ZHEJIANG PROVINCE TO: 315167 NINGBO, ZHEJIANG PROVINCE |
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Effective date of registration: 20140328 Address after: 315167 Zhejiang city of Ningbo province Yinzhou District ancient town turnip water port industrial zone Applicant after: Ningbo Wanchangshun Protection Article Co., Ltd. Address before: 315177 Zhongxing Road 191, Gulin Town, Ningbo, Zhejiang, Yinzhou District Applicant before: Huang Xuanfei |
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Application publication date: 20140212 |