CN103232782A - Environmentally-friendly solvent-free acrylic ester conformal coating - Google Patents
Environmentally-friendly solvent-free acrylic ester conformal coating Download PDFInfo
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Abstract
The invention relates to ultraviolet light curing environmentally-friendly solvent-free acrylic ester conformal coating for surface coating of electronic products. The coating is prepared from the following components in percentage by weight: 15 to 30 percent of trifunctional urethane acrylate, 5 to 30 percent of high-functionality acrylic ester monomer, 5 to 40 percent of (methyl) crylic acid modified organosilicon, 10 to 40 percent of crylic acid active monomer, 2 to 10 percent of photoinitiator, 0.1 to 1 percent of polymerization inhibitor and 0 to 1 percent of other additives. The ultraviolet light curing environment-friendly solvent-free acrylic ester conformal coating can be widely applied to surface coating of the electronic products such as mobile phones and digital products, and has the characteristics of high wear resistance, high light transmittance, strong adhesive force, high glossiness and the like.
Description
Technical field
The present invention designs the conformal coating field, more specifically, relates to a kind of environment-friendly type solvent-free acrylate conformal coating.
Background technology
Radiation curing refers to that UV-light (UV) and electron beam (EB) solidify, and is a kind of advanced person's surface treatment technology of material.It is to utilize UV/EB to cause to have chemically active liquid material rapid polymerization, instantaneous solidification film forming.Photocuring technology has fast setting, less energy-consumption, high-level efficiency, advantage such as pollution-free, meet fully that " 5E " principle: Efficient is efficient, Enabling wide adaptability, Economical economy, energy-conservation, the Environment Friendly environmental friendliness of Energy saving, be a kind of eco-friendly green technology.
In this year, along with enhancing and the development of high-tech of people's Environmental awareness, the UV curing technology is subjected to people and extensively payes attention to.What at present, domestic research was more is the application of UV curing technology aspect coating.As one of Application Areas of UV curing technology, the UV curing adhesive obtains to develop rapidly abroad, and China compares with the area with developed country the research and development of UV curing adhesive, remains in bigger gap.The UV curing adhesive can replace traditional sizing agent at special dimension, compares with traditional sizing agent, and it is long that the UV curing adhesive has the shelf lives, do not contain advantages such as solvent, smell is low, curing speed is fast, cohesive strength is high, production energy consumption is low.Therefore, the UV curing adhesive has the wide application prospect of sending out in fields such as optics, electronics, accurate apparatuses.
Along with the attention of household electric appliances to product reliability, this concept of conformal coating is more and more mentioned by production firm, and major cause is that conformal coating can provide functions such as moistureproof, anti-salt fog, anti-electrostatic to product.Except being used for electronic industry, conformal coating glue is also having the wide application prospect of sending out just to begin one's study from the seventies in last century abroad aspect automotive industry, aerospace industry, national defense industry and the biotechnology, domestic then Xianyu report.Ultraviolet light polymerization conformal coating glue enjoys people to pay close attention to because of the energy-conserving and environment-protective advantage that it has.
Ultraviolet-curing paint is because These characteristics also obtains more and more widely application in electron trade.Ultraviolet-curing paint also can comprise that Communication Equipment, audio-visual equipment and consumption electronic products carry out application to electronic product except doing CD coating and DVD tackiness agent.Along with the development of IT industry, the requirement of emerging electronic product coating protection performance and aesthetic effect is more and more higher, not only requires the coating efficiency height, and wear resistance, optical property and impact resistance are also had higher requirement.Specifically, the ultraviolet-curing paint that is used for the application of high-performance electronic product surface need have super wear-resisting, strong adhesive force and the smooth effect of high minute surface concurrently.Existing application product much is difficult to take into account wear resistance, sticking power and surface luster, therefore is difficult to satisfy the reload request that is coated with of many high-grade electronic products.
Summary of the invention
The objective of the invention is to obtain the two ultraviolet light polymerization environment-friendly type solvent-free acrylate conformal coatings that solidify, are used for electric product surface coating of a kind of light-moisture.
The invention provides a kind of environment-friendly type solvent-free acrylate conformal coating, it is characterized in that, formed by the feedstock production of following weight part:
Trifunctional urethane acrylate 15 ~ 50;
Vinylformic acid reactive monomer 5 ~ 40;
Acryl-modified silicone resin 5 ~ 40;
Light trigger 2 ~ 10;
Stopper 0.1 ~ 1;
Wherein, the general structure of described methacrylic acid modified organic silicon is:
In the formula, R1 is H or CH3; R2 is for replacing or unsubstituted C1-20 alkane group; R3 is for replacing or unsubstituted C1-20 alkane group.
Smooth moisture of the present invention is two preparation methods of solidifying comprise the steps:
S1. trifunctional urethane acrylate, acryl-modified silicone resin, vinylformic acid reactive monomer are mixed dissolving under room temperature, lucifuge condition;
S2. add light trigger, under room temperature, the lucifuge condition, stirred 30-60 minute;
S3. add stopper, under room temperature, the lucifuge condition, stirred 20-45 minute, namely.
Described trifunctional urethane acrylate is to be the polyurethane prepolymer of terminal with acrylate-based, and described polyurethane prepolymer is formed by hydroxyl telechelic polyester or the polyether prepolymer pre-polymerization of triisocyanate and trifunctional.
Described vinylformic acid reactive monomer refers to contain 2-7 acrylate-based heterocyclic monomer, described heterocycle refers to contain the heterocycle of a plurality of Sauerstoffatoms or nitrogen-atoms, is preferably in tri (propylene glycol) diacrylate, ethyl propenoate, methyl methacrylate, butyl acrylate, Propylene glycol monoacrylate, Rocryl 410, vinylformic acid cyclohexyl ester, isobornyl acrylate, trimethylolpropane diacrylate, ethoxylated bisphenol A diacrylate or the ethoxylated neopentylglycol diacrylate etc. one or more.
Described light trigger is 2-hydroxyl-aminomethyl phenyl propane-1-ketone, 1-hydroxy-cyclohexyl phenyl ketone, 2-methyl-2-(4-methylthio group phenyl)-in the 2 morpholinyls-1-acetone, benzoin dimethylether, benzophenone or 2,4,6-trimethylbenzoyl-diphenyl phosphine oxide one or more;
Described stopper is one or more in the quinones stoppers such as hydroquinone monomethyl ether, para benzoquinone, Resorcinol.
In the raw material of the present invention, can also comprise in pigment, defoamer, flow agent, wetting agent, the dispersion agent one or more.
The invention has the advantages that:
1. adopt the film-forming resin combination of the acrylate monomer of trifunctional urethane acrylate, Gao Guanneng of toughness and special monofunctional monomer to obtain the super antiwear characteristic of solidified coating, its RCA abrasion can reach more than 1600 times;
2. adopt to contain heterocyclic monomers such as a large amount of nitrogen-atoms or Sauerstoffatom, can make coating and matrix form strong hydrogen bond action, thereby obtain to have the coating of splendid sticking power;
3. the combination of high functionality monomer and suitable initiator system can obtain high curing speed and efficient.
4. the acrylate conformal coating that obtains of the present invention is nontoxic to environment, and without any need for solvent, can pass through ultraviolet light polymerization, also can pass through moisture-curable, therefore is well suited for electric product surface coating and uses.
Embodiment
Further describe the present invention below in conjunction with specific embodiment.Unless stated otherwise, reagent, equipment and the method for the present invention's employing are the conventional commercial reagent of the art, equipment and the conventional method of using.
Embodiment 1
The weight of ultraviolet light polymerization environment-friendly solvent-free conformal coating that is used for electric product surface coating is composed as follows:
Aliphatic urethane acrylate (producer: Changxing chemistry, model: 6134B-80) 15 parts
Acryl-modified silicone resin (producer: the STARKON of Intelligence Technology (China) Co., Ltd. organosilicon modified crylic acid resin ACR-903) 40 parts
2 parts of ethoxylation dipentaerythritol pentamethyl-acrylate
2 parts of Rocryl 410s
2 parts of 1-hydroxy cyclohexyl phenylketones
BYK352(polypropylene acid solution) 1 part
0.1 part of Resorcinol
S1. with 15 parts of aliphatic urethane acrylates, 40 parts of acryl-modified silicone resins, under room temperature, lucifuge condition, mix dissolving for 2 parts with 2 parts of ethoxylation dipentaerythritol pentamethyl-acrylate and Rocryl 410;
S2. add 2 parts of 1-hydroxy cyclohexyl phenylketones, under room temperature, lucifuge condition, stirred 60 minutes;
S3. add 0.1 part of Resorcinol, BYK352(polypropylene acid solution) 1 part, under room temperature, lucifuge condition, stirred 45 minutes, namely.
Embodiment 2
The weight of ultraviolet light polymerization environment-friendly solvent-free conformal coating that is used for electric product surface coating is composed as follows:
Aliphatic urethane acrylate (producer: Changxing chemistry, model: 6134B-80) 50 parts
5 parts of acryl-modified silicone resins (STARKON of Intelligence Technology (China) Co., Ltd. organosilicon modified crylic acid resin ACR-903)
10 parts of vinylformic acid cyclohexyl esters
10 parts of ethoxylation dipentaerythritol pentamethyl-acrylate
10 parts of Rocryl 410s
10 parts of 1-hydroxy cyclohexyl phenylketones
BYK352(polypropylene acid solution) 1 part
1 part of Resorcinol
S1. with 50 parts of aliphatic urethane acrylates, 5 parts of acryl-modified silicone resins, under room temperature, lucifuge condition, mix dissolving for 10 parts with 10 parts of vinylformic acid cyclohexyl esters, 10 parts of ethoxylation dipentaerythritol pentamethyl-acrylate and Rocryl 410;
S2. add 10 parts of 1-hydroxy cyclohexyl phenylketones, under room temperature, lucifuge condition, stirred 30 minutes;
S3. add 1 part of Resorcinol, BYK352(polypropylene acid solution) 1 part, under room temperature, lucifuge condition, stirred 20 minutes, namely.
Embodiment 3
The weight of ultraviolet light polymerization environment-friendly solvent-free conformal coating that is used for electric product surface coating is composed as follows:
40 parts of the trifunctional urethane acrylates (CN945A60 of Sartomer company) that mixes with SR306
Described SR306 is tri (propylene glycol) diacrylate
10 parts of acryl-modified silicone resins (STARKON of Intelligence Technology (China) Co., Ltd. organosilicon modified crylic acid resin ACR-903)
10 parts of vinylformic acid cyclohexyl esters
5 parts of ethoxylation bisphenol a dimethacrylate
5 parts of isobornyl methacrylates
2-methyl-2-(4-methylthio group phenyl)-5 parts of 2 morpholinyls-1-acetone
1 part of Resorcinol
BYK354(polypropylene acid solution) 1 part
S1. 40 parts of trifunctional urethane acrylates, 10 parts of the acryl-modified silicone resins that will mix with SR306, under room temperature, lucifuge condition, mix dissolving with 10 parts of vinylformic acid cyclohexyl esters, 5 parts of ethoxylation bisphenol a dimethacrylate and 5 parts of g of isobornyl methacrylate;
S2. add 2-methyl-2-(4-methylthio group phenyl)-5 parts of 2 morpholinyls-1-acetone, under room temperature, lucifuge condition, stirred 50 minutes;
S3. add 1 part of Resorcinol, BYK352(polypropylene acid solution) 1 part, under room temperature, lucifuge condition, stirred 30 minutes, namely.
Embodiment 4
The weight of ultraviolet light polymerization environment-friendly solvent-free conformal coating that is used for electric product surface coating is composed as follows:
Aliphatic urethane acrylate (producer: Changxing chemistry, model: 6134B-80) 34 parts
10 parts of the trifunctional urethane acrylates (CN945A60 of Sartomer company) that mixes with SR306
Described SR306 is tri (propylene glycol) diacrylate
10 parts of acryl-modified silicone resin resins (STARKON of Intelligence Technology (China) Co., Ltd. organosilicon modified crylic acid resin ACR-901)
10 parts of ethoxyquin Viscoat 295s
10 parts of methacrylic acid tetrahydrofuran esters
2-methyl-2-(4-methylthio group phenyl)-3 parts of 2 morpholinyls-1-acetone
1 part of Resorcinol
1 part of BYK352 (polypropylene acid solution)
S1. 10 parts of trifunctional urethane acrylates, 10 parts of the acryl-modified silicone resins that mixes with 34 parts of aliphatic urethane acrylates, with SR306, under room temperature, lucifuge condition, mix dissolving for 10 parts with 10 parts of ethoxyquin Viscoat 295s and methacrylic acid tetrahydrofuran ester;
S2. add 2-methyl-2-(4-methylthio group phenyl)-3 parts of 2 morpholinyls-1-acetone, under room temperature, lucifuge condition, stirred 50 minutes;
S3. add 1 part of Resorcinol, BYK352(polypropylene acid solution) 1 part, under room temperature, lucifuge condition, stirred 40 minutes, namely.
Embodiment 5 performance tests
The ultraviolet light polymerization environment-friendly solvent-free acrylate conformal coating that makes by above enforcement prescription is used for the substrate surface applications such as PC/ABS of electronic products such as mobile phone, digital product, levelling obtains solidified coating by ultraviolet light polymerization, its salient features is better than existing coating, have advantages such as high abrasion, high printing opacity, strong adhesion and high gloss, specific as follows:
Claims (7)
1. an environment-friendly type solvent-free acrylate conformal coating is characterized in that, is formed by the feedstock production of following weight part:
15 ~ 50 parts of trifunctional urethane acrylates;
5 ~ 40 parts of vinylformic acid reactive monomers;
5 ~ 40 parts of acryl-modified silicone resins;
2 ~ 10 parts of light triggers;
0.1 ~ 1 part of stopper;
The preparation method of solvent-free acrylate conformal coating of the present invention comprises the steps:
S1. trifunctional polyurethane acrylate resin, acryl-modified silicone resin, vinylformic acid reactive monomer are mixed dissolving under room temperature, lucifuge condition;
S2. add light trigger, under room temperature, the lucifuge condition, stirred 30-60 minute;
S3. add stopper, under room temperature, the lucifuge condition, stirred 20-45 minute, namely.
2. environment-friendly type solvent-free acrylate conformal coating according to claim 1, it is characterized in that, described trifunctional urethane acrylate is to be the polyurethane prepolymer of terminal with acrylate-based, and described polyurethane prepolymer is formed by hydroxyl telechelic polyester or the polyether prepolymer pre-polymerization of triisocyanate and trifunctional.
3. environment-friendly type solvent-free acrylate conformal coating according to claim 1 is characterized in that, described vinylformic acid reactive monomer refers to contain 2-7 acrylate-based heterocyclic monomer, and described heterocycle refers to contain the heterocycle of a plurality of Sauerstoffatoms or nitrogen-atoms.
4. environment-friendly type solvent-free acrylate conformal coating according to claim 3, it is characterized in that described vinylformic acid reactive monomer is tri (propylene glycol) diacrylate, ethyl propenoate, methyl methacrylate, butyl acrylate, Propylene glycol monoacrylate, Rocryl 410, the vinylformic acid cyclohexyl ester, isobornyl acrylate, trimethylolpropane diacrylate, ethoxylation dipentaerythritol pentamethyl-acrylate, the methacrylic acid tetrahydrofuran ester, in ethoxylated bisphenol A diacrylate or the ethoxylated neopentylglycol diacrylate etc. one or more.
5. environment-friendly type solvent-free acrylate conformal coating according to claim 1; it is characterized in that described light trigger is 2-hydroxyl-aminomethyl phenyl propane-1-ketone, 1-hydroxy-cyclohexyl phenyl ketone, 2-methyl-2-(4-methylthio group phenyl)-in 2 morpholinyls-1-acetone, benzoin dimethylether, benzophenone or 2,4,6-trimethylbenzoyl-diphenyl phosphine oxide etc. one or more.
6. environment-friendly type solvent-free acrylate conformal coating according to claim 5 is characterized in that, described stopper is one or more in hydroquinone monomethyl ether, para benzoquinone or the Resorcinol.
7. environment-friendly type solvent-free acrylate conformal coating according to claim 1 is characterized in that described raw material also comprises one or more in pigment, defoamer, flow agent, wetting agent or the dispersion agent.
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| CN104804496A (en) * | 2015-04-28 | 2015-07-29 | 中科院广州化学有限公司南雄材料生产基地 | Low-surface-energy polyurethane photocureable coating and preparation method thereof |
| CN107312455A (en) * | 2017-07-21 | 2017-11-03 | 湖南宏泰新材料有限公司 | A kind of photocuring environment-friendly type weatherability PVD finish paints and its preparation method and application |
| CN107709380A (en) * | 2015-04-23 | 2018-02-16 | 图像电子公司 | There is the monomer and oligomer of application in energy-curable chemistry |
| CN108299493A (en) * | 2016-07-06 | 2018-07-20 | 浙江佑泰新材料科技有限公司 | A kind of silyl acrylate ester monomer and its preparation method and application |
| CN109952353A (en) * | 2016-11-16 | 2019-06-28 | 佳能株式会社 | Adhesive layer forms the method for using composition and article of manufacture |
| CN114806468A (en) * | 2022-01-12 | 2022-07-29 | 上谷新材料(苏州)有限公司 | UV strippable adhesive containing free radical system |
| CN115340815A (en) * | 2021-12-29 | 2022-11-15 | 广东宏昊化工有限公司 | Anti-yellowing wear-resistant UV gloss oil and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103756551A (en) * | 2014-01-17 | 2014-04-30 | 北京化工大学常州先进材料研究院 | High-adhesion UV (Ultraviolet) coating of PET (Polyethylene Terephthalate) film |
| CN107709380A (en) * | 2015-04-23 | 2018-02-16 | 图像电子公司 | There is the monomer and oligomer of application in energy-curable chemistry |
| CN104804496A (en) * | 2015-04-28 | 2015-07-29 | 中科院广州化学有限公司南雄材料生产基地 | Low-surface-energy polyurethane photocureable coating and preparation method thereof |
| CN104804496B (en) * | 2015-04-28 | 2017-10-03 | 中科院广州化学有限公司南雄材料生产基地 | A kind of low-surface-energy polyurethane photocureable coating and preparation method thereof |
| CN108299493A (en) * | 2016-07-06 | 2018-07-20 | 浙江佑泰新材料科技有限公司 | A kind of silyl acrylate ester monomer and its preparation method and application |
| CN108299493B (en) * | 2016-07-06 | 2021-01-12 | 浙江佑泰新材料科技有限公司 | Silicon-containing acrylate monomer and preparation method and application thereof |
| CN109952353A (en) * | 2016-11-16 | 2019-06-28 | 佳能株式会社 | Adhesive layer forms the method for using composition and article of manufacture |
| CN107312455A (en) * | 2017-07-21 | 2017-11-03 | 湖南宏泰新材料有限公司 | A kind of photocuring environment-friendly type weatherability PVD finish paints and its preparation method and application |
| CN107312455B (en) * | 2017-07-21 | 2019-10-18 | 湖南宏泰新材料有限公司 | A kind of photocuring environment-friendly type weatherability PVD finishing coat and its preparation method and application |
| CN115340815A (en) * | 2021-12-29 | 2022-11-15 | 广东宏昊化工有限公司 | Anti-yellowing wear-resistant UV gloss oil and preparation method thereof |
| CN114806468A (en) * | 2022-01-12 | 2022-07-29 | 上谷新材料(苏州)有限公司 | UV strippable adhesive containing free radical system |
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