CN102977756B - Double-component ground coating matched with ultraviolet (UV) coating for coating notebook computer plastic case - Google Patents
Double-component ground coating matched with ultraviolet (UV) coating for coating notebook computer plastic case Download PDFInfo
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- CN102977756B CN102977756B CN201210479594.XA CN201210479594A CN102977756B CN 102977756 B CN102977756 B CN 102977756B CN 201210479594 A CN201210479594 A CN 201210479594A CN 102977756 B CN102977756 B CN 102977756B
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Abstract
The invention discloses a double-component ground coating matched with an ultraviolet (UV) coating for coating a notebook computer plastic case. The double-component ground coating comprises a main agent and a curing agent, wherein the main agent comprises the following components according to weight contents: 10-20% of hydroxylated acrylic resin with low hydroxyl value, 10-20% of hydroxylated acrylic resin with low and medium hydroxyl value, 20-40% of hydroxylated acrylic resin with medium hydroxyl value, 5-15% of cellulose acetate butyrate resin, 0-2% of adhesion promoter, 0.2-0.5% of flatting agent, 0.2-0.5% of defoaming agent, 5-30% of pigment paste and 15-25% of solvent; and the curing agent comprises the following components according to the weight contents: 70-80% of hexamethylene diisocyanate and 20-30% of solvent. The invention further relates to a method for preparing the double-component ground coating. The double-component ground coating is suitable for coating the notebook computer plastic case, has good sealing performance for plastic parts of acrylonitrile butadiene styrene (ABS), polycarbonate (PC), ABS plus PC and the like and can be well combined with UV finish paint.
Description
Technical field
The present invention relates to a kind of coating, particularly relate to the two component priming paints matched with UV coating of a kind of notebook computer plastic casing application, the invention still further relates to the preparation method of this coating.
Background technology
Shell application is an important ring of notebook computer manufacturing process, and it not only provides motley decoration to computer, more can protect to plastic material, strengthens anti-scratching wearproof and useful life longevity, therefore enjoys concern and the attention of industry.Current notebook computer Coating Market is based on by Hydroxylated acrylic resin collocation two component PU coating of vulcabond and ultraviolet light polymerization UV coating two class, and wherein UV coating becomes the indispensable part in market with anti-scratch, wear-resisting, the anti-conduction of its brilliance, the performance such as weather-proof.Great majority need the plastic component of application UV coating must be aided with priming paint to construct, since European Union performs halogen standard, traditional is eliminated with the single-component priming paint method of thermoplastic acrylic resin collocation vinyl chloride-vinyl acetate resin, is instead still the priming paint of two component PU type.
Name than the comparatively front application of the applicant is called the patent of invention that a kind of ultraviolet light polymerization overprint coating is used in the priming paint of painting color TV casing, the patent No. is ZL 200610037316.3, two component priming paint is not halogen-containing, paint film is more stable, humidity resistance is better, more not easily there is falling the phenomenon such as paint, cracking, but but have some limitations in coating decoration.Time of drying is long, increase cost, expend and more have a strong impact on painting efficiency while multiple-energy-source, in addition, the plastic component scribbling two component priming paint cannot be placed for a long time, must application UV coating within a certain period of time, otherwise namely there will be the situation that between UV and undercoat, adherence is bad, severe patient even has no sticking power, because this reducing the operability of painting, affect production efficiency equally.So, market active demand quick-drying and two component priming paints of UV coatings can be extended indefinitely.
Summary of the invention
First object of the present invention is to provide the two component priming paints matched with UV coating of a kind of notebook computer plastic casing application, it is applicable to notebook computer casing spraying, while having good adherence to plastic component such as ABS, PC, ABS+PC, also can well be combined with between UV finish paint.Coating of the present invention makes film curing by Hydroxylated acrylic resin and hexamethylene diisocyanate crosslinking reaction, no matter be that after adherence to plastics below or the adherence to upper strata UV coating and solidification, the stability of whole paint film is all well a lot, and formula is not halogen-containing, reaches European Union environmental protection requirement.In addition, coating pigment color developing of the present invention is good, and hardness is high, and alcohol resistance is good, its key is quick-drying, and spray UV finish paint again after can placing indefinitely, can baking time be shortened, cost-saving, reduce energy consumption, enhance productivity, can arrange by oneself according to practical situation again sprays UV finish paint at any time, makes painting have more active operation.
Second object of the present invention is to provide the preparation method of above-mentioned coating.
First object of the present invention is achieved through the following technical solutions: the two component priming paints matched with UV coating of a kind of notebook computer plastic casing application, comprise host and solidifying agent, wherein, described host comprises the component of following weight content:
Low hydroxyl value Hydroxylated acrylic resin 10-20%
In low hydroxyl value Hydroxylated acrylic resin 10-20%
Middle hydroxyl value Hydroxylated acrylic resin 20-40%
Cellulose acetate butyrate resin 5-15%
Adhesion promoter 0-2%
Flow agent 0.2-0.5%
Defoamer 0.2-0.5%
Pigment slurry 5-30%
Solvent 15-25%;
Described solidifying agent comprises the component of following weight content:
Hexamethylene diisocyanate (HDI) 70-80%
Solvent 20-30%.
In the present invention, the hydroxyl value of the proportioning between described host and solidifying agent by Hydroxylated acrylic resin and the NCO content of vulcabond, calculate with mol ratio OH:NCO=1 ﹕ 1.As one embodiment of the present of invention, the proportioning between described host and solidifying agent is 8 ~ 15
﹕ 1.
Low hydroxyl value Hydroxylated acrylic resin of the present invention refers to that solid part hydroxyl value is the Hydroxylated acrylic resin of 10 ~ 40, as LR-7524, LR-7615, LR-7627 of Mitsubishi Li Yang company, WXU-880, BL-616, ZHP-108, ZHP-189 etc. of Japanese DIC company.
In of the present invention, low hydroxyl value Hydroxylated acrylic resin refers to that solid part hydroxyl value is the Hydroxylated acrylic resin of 40 ~ 70, as LR-7506, LR-7602 of Mitsubishi Li Yang company, ZHP-209, ZHP-153 of DIC company of Japan, SM507, SM540 etc. of cyanogen specialization work.
Middle hydroxyl value Hydroxylated acrylic resin of the present invention refers to that solid part hydroxyl value is the Hydroxylated acrylic resin of 70 ~ 100, as LR7608, LR-7600 of Mitsubishi Li Yang company, 55-129, ZHP-810 of DIC company of Japan, VSM2570, VSM2706 etc. of cyanogen specialization work.
Cellulose acetate butyrate resin of the present invention refers to that second-order transition temperature is at the cellulose acetate butyrate resin of 110 DEG C ~ 130 DEG C, as CAB381-0.1, CAB381-0.5, CAB381-2, CAB381-20 etc. of Yi Shi Man.
Adhesion promoter of the present invention refers to Degussa LTW, Degussa LTH, KEPER 922, KEPER 925, KEPER 926 etc.
Flow agent of the present invention refers to BYK323, BYK358N, BYK331, BYK306, EFKA3777, EFKA3033, TEGO425, TEGO245 or their mixture etc.
Defoamer of the present invention refers to BYK055, BYK080, BYK141 or their mixture etc.
Pigment slurry of the present invention refers to various silver slurry, assorted look mother slurry or their mixture.Described assorted look mother slurry comprises titanium dioxide slurry, carbon black slurry, titanium mountain valley with clumps of trees and bamboo indigo plant slurry, the titanium mountain valley with clumps of trees and bamboo purple slurry, the red slurry of F3RK etc., and described various silver slurry comprises 5680NS, 5660NS, W370,6390NS etc. of Japanese Japan.
Hexamethylene diisocyanate of the present invention (HDI) refers to Bayer3390, Asahi Chemical Industry TPA100 etc.
Solvent of the present invention refers to vinyl acetic monomer, butanone, N-BUTYL ACETATE, methyl iso-butyl ketone (MIBK), diisobutyl ketone, 1-Methoxy-2-propyl acetate, diacetone alcohol or their mixture.
Second object of the present invention is achieved through the following technical solutions: the preparation method of the two component priming paints matched with UV coating of a kind of notebook computer plastic casing application, comprise host preparation and solidifying agent prepare two steps, wherein host prepare comprise the steps:
(1) by proportioning by low hydroxyl value Hydroxylated acrylic resin, in low hydroxyl value Hydroxylated acrylic resin, the appropriate solvent of middle hydroxyl value Hydroxylated acrylic resin fully dissolve in reactor or stirred pot, stand-by;
(2) in reactor or stirred pot, cellulose acetate butyrate resin solution and adhesion promoter is added while stirring;
(3) will join in reactor or stirred pot while stirring after flow agent, defoamer dilution with a small amount of solvent;
(4) pigment slurry and remaining solvent are joined in reactor or stirred pot, filter and package after stirring;
Solidifying agent preparation comprises the steps:
By proportioning, hexamethylene diisocyanate and solvent are added in reactor or stirred pot, filter and package after stirring.
In step (2) in described host preparation method, described cellulose acetate butyrate resin solution to be weight percentage that described cellulose acetate butyrate resin dissolves is made in N-BUTYL ACETATE or vinyl acetic monomer be 20% cellulose acetate butyrate resin solution.
Notebook computer provided by the invention is opaque or translucent homogeneous phase glue by the host of the two component priming paints matched with UV coating, and solid content is 30-45%, 1 year room temperature stored protected from light time; Solidifying agent is clear homogeneous glue, and solid content is 70-80%, room temperature stored protected from light half a year time.By the hydroxyl value of Hydroxylated acrylic resin and the NCO content of vulcabond, the proportioning of host and solidifying agent is calculated with mol ratio OH:NCO=1 ﹕ 1, rare paint spay-coating stirred is opened on plastic component with diluent by proportioning mixing, at 60 DEG C ~ 70 DEG C, the ultraviolet light polymerization UV coating of assembly set within 30 minutes, can be coated with later, UV coating can under the UV energy of 800-1000mj/cm2 completion of cure in 30 seconds.Paint film after solidification has the preferably feature such as toughness and hardness and wear-resisting, high temperature resistance high humidity, cold-and-heat resistent circulation, good weatherability.
Embodiment
To be easier to understand the present invention with reference to the following example, providing embodiment is to illustrate the present invention, instead of in order to limit the scope of the invention.
The preparation method of the two component priming paints matched with UV coating of the notebook computer plastic casing application of following examples:
Prepared by host:
(1) by proportioning by low hydroxyl value Hydroxylated acrylic resin, in low hydroxyl value Hydroxylated acrylic resin, the appropriate solvent of middle hydroxyl value Hydroxylated acrylic resin fully dissolve in reactor or stirred pot, stand-by.
(2) in reactor or stirred pot, cellulose acetate butyrate resin solution and adhesion promoter is added while stirring; Cellulose acetate butyrate resin solution to be weight percentage that described cellulose acetate butyrate resin dissolves is made in N-BUTYL ACETATE or vinyl acetic monomer be 20% cellulose acetate butyrate resin solution.
(3) reactor or stirred pot is joined with a small amount of solvent while stirring by after flow agent, defoamer dilution.
(4) join in reactor or stirred pot by pigment slurry and remaining partial solvent, high-speed stirring was packed with 200 ~ 300 object strainer filterings after 30 minutes.
Prepared by solidifying agent:
Add in reactor or stirred pot by proportioning by hexamethylene diisocyanate and solvent, high-speed stirring filtered and packaged with 400 mesh filter screens after 30 minutes.
Described low hydroxyl value Hydroxylated acrylic resin refers to that solid part hydroxyl value is the Hydroxylated acrylic resin of 10 ~ 40, as LR-7524, LR-7615, LR-7627 of Mitsubishi Li Yang company, WXU-880, BL-616, ZHP-108, ZHP-189 etc. of Japanese DIC company.
In described, low hydroxyl value Hydroxylated acrylic resin refers to that solid part hydroxyl value is the Hydroxylated acrylic resin of 40 ~ 70, as LR-7506, LR-7602 of Mitsubishi Li Yang company, ZHP-209, ZHP-153 of DIC company of Japan, SM507, SM540 etc. of cyanogen specialization work.
Described middle hydroxyl value Hydroxylated acrylic resin refers to that solid part hydroxyl value is the Hydroxylated acrylic resin of 70 ~ 100, as LR7608, LR-7600 of Mitsubishi Li Yang company, 55-129, ZHP-810 of DIC company of Japan, VSM2570, VSM2706 etc. of cyanogen specialization work.
Described cellulose acetate butyrate resin refers to that second-order transition temperature is at the cellulose acetate butyrate resin of 110 DEG C ~ 130 DEG C, as CAB381-0.1, CAB381-0.5, CAB381-2, CAB381-20 etc. of Yi Shi Man.
Described adhesion promoter refers to Degussa LTW, Degussa LTH, KEPER 922, KEPER 925, KEPER 926 etc.
Described flow agent refers to BYK323, BYK358N, BYK331, BYK306, EFKA3777, EFKA3033, TEGO425, TEGO245 or their mixture etc.
Described defoamer refers to BYK055, BYK080, BYK141 or their mixture etc.
Described pigment slurry refers to various silver slurry, assorted look mother slurry or their mixture.Described assorted look mother slurry comprises titanium dioxide slurry, carbon black slurry, titanium mountain valley with clumps of trees and bamboo indigo plant slurry, the titanium mountain valley with clumps of trees and bamboo purple slurry, the red slurry of F3RK etc., and described various silver slurry comprises 5680NS, 5660NS, W370,6390NS etc. of Japanese Japan.
Described hexamethylene diisocyanate (HDI) refers to Bayer3390, Asahi Chemical Industry TPA100 etc.
Described solvent refers to vinyl acetic monomer, butanone, N-BUTYL ACETATE, methyl iso-butyl ketone (MIBK), diisobutyl ketone, 1-Methoxy-2-propyl acetate, diacetone alcohol or their mixture.
After the host of the coating of above-described embodiment 1 ~ 4 and solidifying agent mixture, dilute with thinner, be sprayed on pretreated Laptop case, after solidification to be coated, carry out performance test, wherein,
wherein, thinner (weight content):
Vinyl acetic monomer 25%
N-BUTYL ACETATE 15%
Butanone 15%
Methyl iso-butyl ketone (MIBK) 25%
Diacetone alcohol 20%.
Coating each component construction blending ratio (weight ratio):
Embodiment 1: Zhu Ji ﹕ Guization Ji ﹕ thinner=10 ﹕ 1 ﹕ 8-12
Embodiment 2: Zhu Ji ﹕ Guization Ji ﹕ thinner=10 ﹕ 1 ﹕ 8-12
Embodiment 3: Zhu Ji ﹕ Guization Ji ﹕ thinner=11 ﹕ 1 ﹕ 9-13
Embodiment 4: Zhu Ji ﹕ Guization Ji ﹕ thinner=11 ﹕ 1 ﹕ 9-13.
Test 1: dilute after the host proportioning solidifying agent of above-described embodiment with thinner, be sprayed on pretreated Laptop case, toast 30 minutes at 60 DEG C ~ 70 DEG C, normal temperature cools 5 minutes, then application ultraviolet light polymerization UV coating, then paint film property is tested as following table after ultraviolet light polymerization.
Test 2: dilute after the host proportioning solidifying agent of above-described embodiment 1 ~ 4 with thinner, be sprayed on pretreated Laptop case, toast 8 hours at 60 DEG C ~ 70 DEG C, normal temperature places 7 days, then application ultraviolet light polymerization UV coating, then paint film property test is as follows after ultraviolet light polymerization:
Claims (3)
1. the two component priming paints matched with UV coating of notebook computer plastic casing application, it is characterized in that, be made up of host and solidifying agent, the proportioning between host and solidifying agent is 8 ~ 15
﹕1, wherein, described host is made up of the component of following weight content:
Low hydroxyl value Hydroxylated acrylic resin 10-20%
In low hydroxyl value Hydroxylated acrylic resin 10-20%
Middle hydroxyl value Hydroxylated acrylic resin 20-40%
Cellulose acetate butyrate resin 5-15%
Adhesion promoter 0-2% and non-vanishing
Flow agent 0.2-0.5%
Defoamer 0.2-0.5%
Pigment slurry 5-30%
Solvent 15-25%;
Described low hydroxyl value Hydroxylated acrylic resin is that solid part hydroxyl value is 10 ~ 40 and is not equal to the Hydroxylated acrylic resin of 40, in described, low hydroxyl value Hydroxylated acrylic resin is solid part hydroxyl value is the Hydroxylated acrylic resin of 40 ~ 70, described middle hydroxyl value Hydroxylated acrylic resin is that solid part hydroxyl value is 70 ~ 100 and is not equal to the Hydroxylated acrylic resin of 70, and described cellulose acetate butyrate resin is second-order transition temperature at the cellulose acetate butyrate resin of 110 DEG C ~ 130 DEG C;
Described solidifying agent is made up of the component of following weight content:
Hexamethylene diisocyanate 70-80%
Solvent 20-30%.
2. the two component priming paints matched with UV coating of a kind of notebook computer plastic casing according to claim 1 application, is characterized in that, described pigment slurry is silver slurry, look mother slurry or their mixture; Described look mother slurry is titanium dioxide slurry, carbon black slurry, titanium mountain valley with clumps of trees and bamboo indigo plant slurry, titanium mountain valley with clumps of trees and bamboo purple slurry or the red slurry of F3RK.
3. the two component priming paints matched with UV coating of a kind of notebook computer plastic casing according to claim 1 and 2 application, it is characterized in that, described solvent is vinyl acetic monomer, butanone, N-BUTYL ACETATE, methyl iso-butyl ketone (MIBK), diisobutyl ketone, 1-Methoxy-2-propyl acetate, diacetone alcohol or their mixture.
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| CN201210479594.XA CN102977756B (en) | 2012-11-23 | 2012-11-23 | Double-component ground coating matched with ultraviolet (UV) coating for coating notebook computer plastic case |
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| CN105907205A (en) * | 2016-05-27 | 2016-08-31 | 安徽胜利精密制造科技有限公司 | Laptop case paint coating base material and preparation method thereof |
| CN106085074A (en) * | 2016-05-27 | 2016-11-09 | 安徽胜利精密制造科技有限公司 | A kind of notebook computer shell coating bed material and preparation method thereof |
| CN107325516A (en) * | 2017-07-12 | 2017-11-07 | 合肥展游软件开发有限公司 | A kind of manufacturing process of router cover |
| CN108594936B (en) * | 2018-04-12 | 2020-10-02 | Oppo广东移动通信有限公司 | Electronic device, shell thereof and manufacturing method of shell |
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| CN114854296A (en) * | 2022-04-26 | 2022-08-05 | 河南东澳化工有限公司 | Special coating for ABS (acrylonitrile butadiene styrene) plastics and preparation method thereof |
| CN116120788A (en) * | 2022-12-23 | 2023-05-16 | 澳达树熊涂料(惠州)有限公司 | Single-component filler capable of preventing blushing as well as preparation method and application thereof |
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| US5489448A (en) * | 1993-05-26 | 1996-02-06 | Bee Chemical Company | Water reducible polyester and resin composition for a flexible plastic primer |
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| US5489448A (en) * | 1993-05-26 | 1996-02-06 | Bee Chemical Company | Water reducible polyester and resin composition for a flexible plastic primer |
| CN102676017A (en) * | 2012-04-27 | 2012-09-19 | 北京展辰化工有限公司 | Wood lacquer and preparation method thereof |
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