CN103289543A - Powder coating for automotive topcoat - Google Patents
Powder coating for automotive topcoat Download PDFInfo
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- CN103289543A CN103289543A CN2013102044033A CN201310204403A CN103289543A CN 103289543 A CN103289543 A CN 103289543A CN 2013102044033 A CN2013102044033 A CN 2013102044033A CN 201310204403 A CN201310204403 A CN 201310204403A CN 103289543 A CN103289543 A CN 103289543A
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- powder coating
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- acrylic resin
- polyether ester
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Abstract
The invention relates to a powder coating for automotive topcoat. The powder coating comprises the following components by weight percent: 3-5% of hydroxy acrylic resin, 0.8-2% of epoxy resin, 12.5-14.5% of polyether ester, 45-50% of polyester resin, 0.3-0.6% of dibutyltin dilaurate, 0.4-0.6% of benzoin, 2-2.2% of a levelling agent, 22.5-25.5% of titanium dioxide and 8-12% of epsilon-caprolactam blocked isophorone diisocyanate. The softness is well maintained while the strength of the powder coating is improved and the weatherability of the powder coating is improved to some extent.
Description
Technical field
The invention belongs to art of powder coatings, refer to a kind of powder coating for automobile finish particularly.
Background technology
Powder coating is a kind of novel solvent 100% solid powdery coating that do not contain, and the existing powder coating that uses is mixed in certain proportion by special resin, pigment, filler, solidifying agent and other auxiliary agent, forms by prepared such as extruding, pulverizing again.Powder coating is easy to store because of it at normal temperatures, and the utilization ratio height, advantages such as easy construction.Since coming out, approval and develop rapidly have widely been obtained.
Present powder coating is divided into the pure epoxy powder coating basically, epoxy-polyester mixed type powder paint, pure polyester powdery paints and acrylic powder coating.Wherein, pure epoxy powder coating and epoxy-polyester mixed type powder paint are not suitable for the open air because weather resisteant is poor; The acrylic powder coating price is higher, causes cost high always; Pure polyester powder is the type of the anti-marquis powder coating that has comparative advantage on the present domestic market, and the advantage of such coating is outstanding, but its elasticity, flexibility, ventilation property and wear resistance are poor slightly, and intensity can not satisfy the technical requirements of automobile finish,
Automobile finish all adopts powder coating now, and therefore, the high end of the technology of powder coating directly has influence on outward appearance and the performance of automobile.But China does not have tangible gap at the powder coating technical elements with developed country, and this also directly causes national automobile backward in technique because of finish paint.But developed country is with the close secret recipe formula protection of technology to this class technology employing.How can break through the west technology barriers, be the technical task that the few scholar of expert of the art is seeking always.
Simultaneously, searching technological breakthrough is also estimated by some enterprises of China, China's number of patent application is to have mentioned a kind of polyurethane automobile finish paint powder coating among the 201110206872.X, and adopting weight percent in this application is the polyether ester of 6-16%, the vibrin of 40-50%, the dibutyl tin dilaurate of 0.3-0.6%, the st-yrax of 0.4-0.6%, the flow agent of 1.4-1.6%, the titanium dioxide of 27-29% and the ε-Ji Neixianan sealing isophorone diisocyanate of 10-15%; Wherein, polyether ester is prepared by following component, 1 of 29-39% terephthalic acid, 10-20%, 1 of 4-cyclohexane dicarboxylic acid, 23-33%, the polyoxy methylene glycol of 4-butyleneglycol, 17-27%, the photostabilizer of 0.1-0.3% and the butyl stannonic acid of 0.05-0.15%.This technical scheme is greatly improved with the intensity of existing pure polyester powder coating, but still can't reach the index that external relevant such coating is used for the car finish paint.
Summary of the invention
The objective of the invention is by improvements over the prior art, under the increase condition of cost of exceeding, in the elasticity that guarantees powder coating, flexibility, improve wear resistance and the intensity of powder coating.
The present invention is achieved by the following technical solutions:
A kind of automobile finish powder coating, each is formed, the ε-Ji Neixianan sealing isophorone diisocyanate of the flow agent of the dibutyl tin dilaurate of the polyether ester of the Hydroxylated acrylic resin of 3%-5%, the Resins, epoxy of 0.8%-2%, 12.5%-14.5%, the vibrin of 45%-50%, 0.3%-0.6%, the st-yrax of 0.4%-0.6%, 2%-2.2%, the titanium dioxide of 22.5%-25.5% and 8%-12%.
What wherein, Resins, epoxy adopted is bisphenol A epoxide resin.
Described vibrin is unsaturated polyester resin.
The beneficial effect that the present invention compares with prior art is:
By the technical program, also well kept flexibility when having improved the intensity of powder coating, and the weather resisteant of powder coating can improve.
Embodiment
Describe technical scheme of the present invention by the following examples in detail, should be understood that, following embodiment only is exemplary, only can be used for explaining and technical scheme of the present invention being described, and can not to be interpreted as is restriction to technical solution of the present invention.
In technical scheme of the present invention, each composition material can outsourcing, also can produce voluntarily or process, but all do not influence technical scheme of the present invention.
A kind of automobile finish powder coating, each is formed, the ε-Ji Neixianan sealing isophorone diisocyanate of the flow agent of the dibutyl tin dilaurate of the polyether ester of the Hydroxylated acrylic resin of 3%-5%, the bisphenol A epoxide resin of 0.8%-2%, 12.5%-14.5%, the unsaturated polyester resin of 45%-50%, 0.3%-0.6%, the st-yrax of 0.4%-0.6%, 2%-2.2%, the titanium dioxide of 22.5%-25.5% and 8%-12%.
The preparation method of above-mentioned powder coating may further comprise the steps,
1) by being by weight percentage, the ε-Ji Neixianan of the flow agent of the dibutyl tin dilaurate of the polyether ester of the Hydroxylated acrylic resin of 3%-5%, the Resins, epoxy of 0.8%-2%, 12.5%-14.5%, the vibrin of 45%-50%, 0.3%-0.6%, the st-yrax of 0.4%-0.6%, 2%-2.2%, the titanium dioxide of 22.5%-25.5% and 8%-12% sealing isophorone diisocyanate is prepared burden;
2) the ε-Ji Neixianan sealing isophorone diisocyanate that polyether ester, vibrin, dibutyl tin dilaurate, st-yrax, flow agent, titanium dioxide is reached drops in the blender and obtains batch mixing A after batch mixing 15-20 minute; Hydroxylated acrylic resin and Resins, epoxy batch mixing were obtained mixed material B in 10-13 minute;
3) adopt twin screw extruder to adopt 75 ℃-85 ℃ to batch mixing A extruding at front end, forcing machine is added mixed material B after temperature is brought up to 110 ℃-120 ℃ in the stage casing, and extrusion molding, after pulverizing, obtain powder coating.
In the technical program, polyether ester and the reaction of ε-Ji Neixianan sealing isophorone diisocyanate generate urethane, and urethane has good physicals.
Urethane and vibrin consistency are good, by the preparation method of the technical program, make urethane and vibrin form network structure, thereby improve the toughness of vibrin.
Acrylic resin and Resins, epoxy reaction, because acrylic resin forms reticulated structure for containing carboxyl functional group when forming ester bond, the network structure that this reticulated structure and urethane and vibrin form is cross-linked to each other, and forms a more complicated network structure.By this network structure, overcome because of the intensity of acrylic resin powder coating high but film crisp, the shortcoming that resistance to impact shock is lower.
What in the present invention, need most attention is churning time and the extrusion temperature of each material.
Because if the churning time weak point can't be realized abundant mixing, if churning time is long, meeting frictional heat in whipping process, having the part component reacts in advance, and this phenomenon can have influence on the product quality in later stage, most importantly, and under same case, improve churning time, fragility increases to some extent after the product film forming.
About extrusion temperature problem of the present invention, 75 ℃-85 ℃ of the temperature when pushing early stage,, but add in the acrylic resin process in the extruding stage casing, increase extrusion temperature.Improve temperature and can improve cancellated toughness between urethane and the vibrin this moment, be conducive to the fragility when crosslinked with the reticulated structure of acrylic resin formation like this, to realize final coating when improving shock strength, toughness also improves relatively.
Powder coating by the technical program preparation can reach its snappiness≤0.7mm, resistance to impact shock 〉=68kg.cm, hardness 〉=2.5H.
Embodiment one
A kind of automobile finish powder coating, be 3% Hydroxylated acrylic resin, 1.0% bisphenol A epoxide resin, 12.5% polyether ester, 50% unsaturated polyester resin, 0.5% dibutyl tin dilaurate, 0.5% st-yrax, 2.0% flow agent, 22.5% titanium dioxide and 8% ε-Ji Neixianan sealing isophorone diisocyanate by weight percentage.
Embodiment two
A kind of automobile finish powder coating, be 5% Hydroxylated acrylic resin, 1.5% bisphenol A epoxide resin, 12.5% polyether ester, 45% unsaturated polyester resin, 0.6% dibutyl tin dilaurate, 0.6% st-yrax, 2.1% flow agent, 22.5% titanium dioxide and 10.2% ε-Ji Neixianan sealing isophorone diisocyanate by weight percentage.
Embodiment three
A kind of automobile finish powder coating, be 3% Hydroxylated acrylic resin, 1.0% bisphenol A epoxide resin, 14.5% polyether ester, 45% unsaturated polyester resin, 0.5% dibutyl tin dilaurate, 0.5% st-yrax, 2.0% flow agent, 25.5% titanium dioxide and 8% ε-Ji Neixianan sealing isophorone diisocyanate by weight percentage.
Embodiment four
A kind of automobile finish powder coating, be 3% Hydroxylated acrylic resin, 0.8% bisphenol A epoxide resin, 13.5% polyether ester, 48% unsaturated polyester resin, 0.3% dibutyl tin dilaurate, 0.3% st-yrax, 2.0% flow agent, 24.1% titanium dioxide and 8% ε-Ji Neixianan sealing isophorone diisocyanate by weight percentage.
Claims (3)
1. automobile finish powder coating, it is characterized in that: each is formed is that the ε-Ji Neixianan of the flow agent of the dibutyl tin dilaurate of the polyether ester of the Hydroxylated acrylic resin of 3%-5%, the Resins, epoxy of 0.8%-2%, 12.5%-14.5%, the vibrin of 45%-50%, 0.3%-0.6%, the st-yrax of 0.4%-0.6%, 2%-2.2%, the titanium dioxide of 22.5%-25.5% and 8%-12% seals isophorone diisocyanate by weight percentage.
2. automobile finish powder coating according to claim 1 is characterized in that: Resins, epoxy adopts is bisphenol A epoxide resin.
3. automobile finish powder coating according to claim 1, it is characterized in that: described vibrin is unsaturated polyester resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310204403.3A CN103289543B (en) | 2013-05-28 | 2013-05-28 | A kind of automobile finish powder coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310204403.3A CN103289543B (en) | 2013-05-28 | 2013-05-28 | A kind of automobile finish powder coating |
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| CN103289543A true CN103289543A (en) | 2013-09-11 |
| CN103289543B CN103289543B (en) | 2016-01-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104312379A (en) * | 2014-10-14 | 2015-01-28 | 苏州洛特兰新材料科技有限公司 | Scrubbing-resistant acrylic epoxy resin powder coating for ceramic |
| CN104387893A (en) * | 2014-12-07 | 2015-03-04 | 李永志 | Heat-insulation automobile powder paint |
| CN104387895A (en) * | 2014-12-07 | 2015-03-04 | 李永志 | Antibacterial car powder paint |
| CN105733383A (en) * | 2016-03-24 | 2016-07-06 | 安徽圣德建材科技有限公司 | High-toughness oleophobic and hydrophobic coating |
| CN106800875A (en) * | 2016-12-26 | 2017-06-06 | 安徽雷萨重工机械有限公司 | A kind of metallic article containing protective coating |
Citations (6)
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|---|---|---|---|---|
| US20050014885A1 (en) * | 2003-06-10 | 2005-01-20 | Hideaki Katsuta | Automobile body external panel-used water based coating composition and multi-layer coating film-forming method |
| CN1746236A (en) * | 2005-08-25 | 2006-03-15 | 复旦大学 | High-performance organic-inorganic resin coating material with hybrid acrylic ester and production thereof |
| CN101225275A (en) * | 2008-01-31 | 2008-07-23 | 宁波市派特勒粉末涂料有限公司 | Acroleic acid mixed powder coating |
| CN101899261A (en) * | 2010-08-02 | 2010-12-01 | 唐山市思远涂料有限公司 | Paint for painting high-speed train |
| CN102464937A (en) * | 2011-05-20 | 2012-05-23 | 浙江吉利汽车研究院有限公司 | Powder coating for polyurethane-modified polyester automobile finish and preparation method thereof |
| CN102634266A (en) * | 2012-04-27 | 2012-08-15 | 天津翔盛粉末涂料有限公司 | Weather-resistant heavy-duty anticorrosive powder coating |
-
2013
- 2013-05-28 CN CN201310204403.3A patent/CN103289543B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050014885A1 (en) * | 2003-06-10 | 2005-01-20 | Hideaki Katsuta | Automobile body external panel-used water based coating composition and multi-layer coating film-forming method |
| CN1746236A (en) * | 2005-08-25 | 2006-03-15 | 复旦大学 | High-performance organic-inorganic resin coating material with hybrid acrylic ester and production thereof |
| CN101225275A (en) * | 2008-01-31 | 2008-07-23 | 宁波市派特勒粉末涂料有限公司 | Acroleic acid mixed powder coating |
| CN101899261A (en) * | 2010-08-02 | 2010-12-01 | 唐山市思远涂料有限公司 | Paint for painting high-speed train |
| CN102464937A (en) * | 2011-05-20 | 2012-05-23 | 浙江吉利汽车研究院有限公司 | Powder coating for polyurethane-modified polyester automobile finish and preparation method thereof |
| CN102634266A (en) * | 2012-04-27 | 2012-08-15 | 天津翔盛粉末涂料有限公司 | Weather-resistant heavy-duty anticorrosive powder coating |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104312379A (en) * | 2014-10-14 | 2015-01-28 | 苏州洛特兰新材料科技有限公司 | Scrubbing-resistant acrylic epoxy resin powder coating for ceramic |
| CN104387893A (en) * | 2014-12-07 | 2015-03-04 | 李永志 | Heat-insulation automobile powder paint |
| CN104387895A (en) * | 2014-12-07 | 2015-03-04 | 李永志 | Antibacterial car powder paint |
| CN105733383A (en) * | 2016-03-24 | 2016-07-06 | 安徽圣德建材科技有限公司 | High-toughness oleophobic and hydrophobic coating |
| CN106800875A (en) * | 2016-12-26 | 2017-06-06 | 安徽雷萨重工机械有限公司 | A kind of metallic article containing protective coating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103289543B (en) | 2016-01-20 |
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Address after: 315145 Zhejiang city of Ningbo province Yinzhou District Liansheng Road Economic Development Zone No. 258 Applicant after: Ningbo Partner Powder Coatings Co., Ltd. Address before: 315145 Zhejiang city of Ningbo province Yinzhou District Binhai investment center Liansheng Road No. 258 Applicant before: Ningbo Partner Powder Coatings Co.,Ltd. |
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