CN102924989B - Liquid paint for preparing ultraviolet light curing film on surface of poly-chlorinated p-xylene film and painting method - Google Patents
Liquid paint for preparing ultraviolet light curing film on surface of poly-chlorinated p-xylene film and painting method Download PDFInfo
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- CN102924989B CN102924989B CN201210502843.2A CN201210502843A CN102924989B CN 102924989 B CN102924989 B CN 102924989B CN 201210502843 A CN201210502843 A CN 201210502843A CN 102924989 B CN102924989 B CN 102924989B
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Abstract
The invention belongs to the field of ultraviolet curing, and relates to a liquid paint for preparing a layer of ultraviolet light curing film on a surface of a poly-chlorinated p-xylene film and a painting method. The liquid paint comprises the components: 75-86 parts of polyester acrylic ester oligomer, 10-20 parts of aliphatic polyurethane, 4-5 parts of photoinitiators and 90-400 parts of ethyl acetate. The painting method comprises the following steps of purification of oligomer, preparation of paint solution, surface treatment of poly-carbonate (PC) film, paint film curing and the like. The characteristics of adjustable hardness and flexibility of the ultraviolet light curing paint are utilized, so that the abrasive resistance and the collision resistance performance of the PC film are improved; and the prepared paint film has the advantages of simple film-forming process, good binding force with the PC film, good abrasive resistance, adjustable hardness and the like.
Description
Technical field
The invention belongs to UV curing field, relate to a kind of at Parylene C film surface cure UV-light paint film, from and the preparation method of paint liquid used and paint film method.
Background technology
Parylene C film (being called for short PC film) PC film, formal name used at school is parylene C, being the macromolecule membrane utilizing chemical vapor deposition (CVD) technique to prepare, having excellent electrical insulating property and protective, is the most effective protection against the tide in the present age, mildew-resistant, anticorrosion, salt-fog preventing coating material.It is gone out to apply completely the polymer thin film coating of shape at substrate surface " growth " by active small molecular, it can be coated to the surface of different shape, comprises sharp-pointed seamed edge, is known as " all-pervasive " and can gos deep in crack and internal surface.The 0.1-100 micron film coating that under this vacuum state prepared by room temperature deposition, even, the fine and close free of pinholes of thickness, transparent unstressed, containing auxiliary agent, not disfiguring workpiece, have excellent electrical insulating property and protective, be even called in the industry the special protective coating of the most top protection against the tide in the world today, mildew-resistant (zero level), anticorrosion, Defend salt fog.PC film is mainly used in circuit card and magneticsubstance or historical relic's protection aspect at home.
But fragility is larger after its thickness reaches certain value; be subject to easily causing under the conditions such as friction, collision film breaks, with the situation such as Matrix separation; affect its protective value, therefore can prepare one deck on its surface have the paint film of certain toughness, hardness to improve PC film crocking resistance and collision performance.
At present, the rare PC film surface that is openly reported in is coated with thing, and some company is that film is generally within 10um by coast of paint liquid very thin for ultraviolet light polymerization on circuit card, magneticsubstance etc.; In addition, the research of part company, in the modification of PC film surface grafting, to attempt to improve PC film ageing resistance, mechanical property, surface energy etc., but all only sees the article of some Laboratory Principle aspects.
Because PC film surface energy is extremely low, PC film and most of material adhesive all bad, the selection of paint liquid material is difficult to, if the present invention is in initial development, encounter a variety of Photocurable oligomers during selection material, some materials are that film forming rear surface is not done always, present non-setting adhesive state; More material causes the easy brittle failure of PC film with PC once being combined, and also has some materials to be bad with PC binding force of membrane.
Topmost difficulty is that multiple oligopolymer is all bad with PC binding force of membrane in process, and what bonding force was good is generally and surfaces of tacky, otherwise some PC film embrittlements to show bonding force also bad simultaneously.
The sixties in 20th century is ultraviolet light polymerization painting technology just develop a kind of eco-friendly new technology, there is the advantage that other many paint film technologies of preparing are incomparable, as fast in film forming speed, curing degree is high, pollution-free, sticking power is good, painting quality advantages of higher, is described as the technology of green industry geared to the 21st century with Electron beam curing technology.
But how to solve PC film and be coated with strongthener and PC binding force of membrane in the selection of suitable material in membrane process and technique, be still the thing be imminent at present.
Summary of the invention
For solving above technical problem, the present invention utilizes ultraviolet light polymerization painting technology to prepare one deck photocuring paint film on Parylene C surface, to improve PC film rub resistance, collision performance.
The paint liquid of a kind of Parylene C film surface ultraviolet light polymerization of above technical problem is solved in the present invention, it is characterized in that: paint liquid is made up of the component of following weight part: polyester acrylate oligomers 75-86 part, aliphatic polyurethane six origoester acrylate 10-20 part, light trigger 4-5 part, ethyl acetate 90-400 part
Paint liquid formula in the present invention is through that the contrast of plenty of time and energy is selected, the restructuring work selection material such as cooperation and consumption, ratio suitable between each component, make paint liquid and Parylene C binding force of membrane is good, film forming speed is fast, there is the characteristic that toughness is strong, stamina is long.Join with regard to polycomponent and react, solution must not be solidified or the technical problem of the phenomenon such as PC film embrittlement completely.
Polyester acrylate oligomers is design for plastics finish paint, belong to the oligopolymer not containing diluting monomer, there are excellent wear resistance, good yellowing resistance and curing speed fast, the application of the uv curing coating in various material, particularly plastics can be provided.
Aliphatic polyurethane six origoester acrylate is the flexible oligopolymer of a kind of polymer, and containing longer flexible molecule chain, Tg is low, shrinks little, produces internal stress little, have good bonding force, but solidification effect is bad, can not solidifies completely with plastics etc.The ratio of the present invention between each component consumption and each amounts of components overcomes in its solidification deficiency.
Oligopolymer is one of component that in photocuring product, ratio is maximum, it is the binder resin of photocurable formulation, the fundamental property (comprise hardness, snappiness, sticking power, optical property, ageing-resistant etc.) of product after decide solidification, polyester acrylate, aliphatic polyurethane six acrylate is exactly oligopolymer.Polyester acrylate oligomers major function has good bonding force with PC film, and owing to being flexible oligopolymer, have good toughness, but can not ensure hardness, the wear resisting property of paint film when being used alone, and curing speed is slow simultaneously, is difficult to solidify completely; The Main Function of aliphatic polyurethane six acrylate (6145-100) regulates set time, and adjustment hardness of paint film, increases paint film wear resisting property etc.
Ethyl acetate is as the thinner of photo-curing paint, and itself does not determine paint film property, but its evaporation rate is moderate, can not volatilize too fastly to cause paint film gas hole defect when prepared by paint film, also can not cross slow and increase the painting film time by evaporation rate.
Wherein, described light trigger is 2-hydroxy-2-methyl-1-phenyl-1-acetone.Be called for short HMPF.Structural formula is C6H5COC (CH3) 2OH, molecular weight 164.20.Colourless or micro-yellow transparent liquid.Boiling point 102 ~ 103 DEG C (0.53kPa).Be dissolved in toluene, acrylate, methacrylic ester etc.Easily and resin miscible, efficiency of initiation is high, Heat stability is good, without Yellowing, and stable storing.Ultraviolet absorption wavelength 260 ~ 360nm.
The paint liquor manufacture method of described Parylene C film surface ultraviolet light polymerization, is characterized in that: comprise the following steps:
The first step: the purification process of oligopolymer:
By polyester acrylate oligomers 75-86 part, aliphatic polyurethane six origoester acrylate 10-20 part, puts into different vessels, with the sealing of 200-500 order cloth, is positioned over 45-50h in loft drier; Oligopolymer packing, transport, the process such as to deposit, have a certain amount of moisture, if do not removed, in film process, moisture the most not easily removes, and affects quality of forming film and effect after solidification.; Sealing gauze is fallen in paint liquid to prevent some impurity in loft drier, moisture evaporation can be allowed again to go out on the other hand.
Second step: the preparation of paint liquid:
Take out dried polyester ester oligomer, aliphatic polyurethane six origoester acrylate, mix with light trigger 4-5 part, stir 1-3min, then add ethyl acetate solvent 90-400 part stirring 2-3min, then seal, keep in Dark Place;
Wherein, in the first step, described loft drier temperature 16-24 DEG C, humidity < 20%.
In addition, paint the method for liquid to Parylene C exemplar film surface cure UV-light paint film in the present invention, it is characterized in that: the first step: the clean to exemplar Parylene C film surface:
Clean exemplar Parylene C film surface 2-3 time with ethyl acetate wiping, then gather exemplar chloro p-Xylol film surface 2-3 time with sherwood oil wiping cleaning; Sherwood oil and ethyl acetate be used for wiping PC surface, Main Function is oil removing, in order to avoid affect paint film and PC binding force of membrane.
The object on wiping cleaning Parylene C film surface removes surface and oil contaminant, in order to avoid affect PC and photo-curing paint binding force of membrane.
Second step: the preparation of paint film:
Get after the paint liquid prepared in step (2) is applied to Parylene C film surface, coating thickness is 0.01mm ~ 0.15mm, exemplar is placed in the baking oven 5 ~ 6min of 50-55 DEG C; Mainly remove ethyl acetate, and under suitable ultraviolet source, irradiate the suitable time to make paint film film forming.
3rd step: take out exemplar, then put into ultraviolet light polymerization equipment, irradiates 13-16s, namely makes Parylene C exemplar film surface cure UV-light paint film.
The object of drying is the solvent ethyl acetate removed in paint film, reduces its impact on film curing effect.
In 3rd step, the described mode on Parylene C film surface that is applied to by paint liquid is for spraying or brushing.
In 3rd step, the lamp of described ultraviolet light polymerization equipment is medium pressure mercury lamp, and power density is 24-28mW.
The present invention solves the problem of poly monochloro-para-xylylene surface crocking resistance and impact resistant poor-performing, a kind of paint liquid and the method for preparing one deck ultraviolet light polymerization paint film on its surface are provided, the method polyester ester oligomer, aliphatic polyurethane six origoester acrylate and light trigger are by suitable proportion preparation, and with diluted ethyl acetate, adopt Rational Coating mode and UV curing process to prepare one deck photocuring paint film on PC film surface.
Polyester ester oligomer, aliphatic polyurethane six origoester acrylate, light trigger are the main components of this paint formula, and ethyl acetate is then add according to the thickness of required spraying.According to the dilution dosage added, a coating thickness can be 0.01mm ~ 0.15mm.
The present invention utilizes the adjustable feature of the hardness of ultraviolet-cured paint, toughness to improve wear resistance and the impact resistant performance of PC film, the paint film of preparation have film-forming process simple, with the advantage such as PC binding force of membrane is good, wear resistance is good, hardness is adjustable.
The paint film that the present invention obtains has that film forming speed is fast, sticking power and toughness is good, scraping and wiping resistance performance by force, does not destroy the features such as the original barrier property of PC film, effectively can improve PC film over-all properties.
embodiment:
embodiment 1
Step one, get polyester ester oligomer 82 parts, aliphatic polyurethane six origoester acrylate 13 parts puts into different vessels, with 500 order mono layer gauze sealings, is placed in the dry 48h of loft drier of room temperature 20 DEG C, 19% humidity;
Step 2, by light trigger 5 parts, with dried polyester ester oligomer, the mixing of aliphatic polyurethane six origoester acrylate is also fully stirred, and the ethyl acetate solvent adding 100 parts stirs, and dissolves; Then seal, keep in Dark Place.
Step 3, use absorbent cotton to dip ethyl acetate and clean 3 times at PC film surface wipes, re-use absorbent cotton and dip sherwood oil and clean 3 times at Parylene C film surface wipes.
Step 4, get the complete paint solution spraying of preparation in Parylene C film surface, and the baking oven being placed in 55 DEG C heats 5min, takes out exemplar; Then exemplar is put into ultraviolet light polymerization equipment, opening device, equipment medium pressure mercury lamp used, power density is 28mW, irradiates 15s, and take out exemplar, paint film is prepared complete.
embodiment 2
Step one, get polyester ester oligomer 75 parts, aliphatic polyurethane six origoester acrylate 20 parts puts into different vessels, with 300 order mono layer gauze sealings, is placed in the dry 45h of loft drier of room temperature 16 DEG C, 15% humidity;
Step 2, by light trigger 5 parts, with dried polyester ester oligomer, the mixing of aliphatic polyurethane six origoester acrylate is also fully stirred, and the ethyl acetate solvent adding 90 parts stirs, and dissolves; Seal, keep in Dark Place.
Step 3, use absorbent cotton to dip ethyl acetate and clean 2 times at PC film surface wipes, re-use absorbent cotton and dip sherwood oil and clean 2 times at Parylene C film surface wipes.
Step 4, get the complete paint solution of preparation and brush in Parylene C film surface, and the baking oven being placed in 50 DEG C heats 6min, takes out exemplar; Then exemplar is put into ultraviolet light polymerization equipment, opening device, equipment medium pressure mercury lamp used, power density is 24mW, irradiates 16s, and take out exemplar, paint film is prepared complete.
embodiment 3
Step one, get polyester ester oligomer 86 parts, aliphatic polyurethane six origoester acrylate 10 parts puts into different vessels, with 400 order mono layer gauze sealings, is placed in the dry 50h of loft drier of room temperature 24 DEG C, 16% humidity;
Step 2, by light trigger 5 parts, with dried polyester ester oligomer, the mixing of aliphatic polyurethane six origoester acrylate is also fully stirred, and the ethyl acetate solvent adding 200 parts stirs, and dissolves; Seal, keep in Dark Place.
Step 3, use absorbent cotton to dip ethyl acetate and clean 3 times at PC film surface wipes, re-use absorbent cotton and dip sherwood oil and clean 3 times at Parylene C film surface wipes.
Step 4, get the complete paint solution of preparation and brush in Parylene C film surface, and the baking oven being placed in 52 DEG C heats 5min, takes out exemplar; Then exemplar is put into ultraviolet light polymerization equipment, opening device, equipment medium pressure mercury lamp used, power density is 25mW, irradiates 13s, and take out exemplar, paint film is prepared complete.
embodiment 4
Step one, get polyester ester oligomer 80 parts, aliphatic polyurethane six origoester acrylate 15 parts puts into different vessels, with 200 order mono layer gauze sealings, is placed in the dry 42h of loft drier of room temperature 18 DEG C, 14% humidity;
Step 2, by light trigger 4.5 parts, with dried polyester ester oligomer, the mixing of aliphatic polyurethane six origoester acrylate is also fully stirred, and the ethyl acetate solvent added stirs, and dissolves, 400 parts; Seal, keep in Dark Place.
Step 3, use absorbent cotton to dip ethyl acetate and clean 2 times at PC film surface wipes, re-use absorbent cotton and dip sherwood oil and clean 2 times at Parylene C film surface wipes.
Step 4, get the complete paint solution of preparation and brush in Parylene C film surface, and the baking oven being placed in 54 DEG C heats 5min, takes out exemplar; Then exemplar is put into ultraviolet light polymerization equipment, opening device, equipment medium pressure mercury lamp used, power density is 26mW, irradiates 16s, and take out exemplar, paint film is prepared complete.
With the performance comparison of general paint film after medium ultraviolet photocuring paint film of the present invention, as table 1:
Table 1
Can draw from above table, the paint film film forming speed in the present invention is fast, surface drying time obviously shortens, from least 10min of general paint film time, shortens to 15s, save time and cost; In addition, the sticking power of paint film and PC film also has good effect, have good toughness and soft malleability, hardness has adjustability.
On the impact of PC film dynamic performance after ultraviolet light polymerization paint film, as table 2:
Table 2
Compared with the PC film not being coated with paint film, draw from table, tensile strength, prevent from rupturing and shock-resistant in paint film in the present invention all have obvious beneficial effect, improve PC film rub resistance, collision performance.
On the impact of PC barrier property after ultraviolet light polymerization paint film, as table 3:
Table 3
Paint film in the present invention shows and features such as enhancing the original barrier property of PC film effectively improves PC film over-all properties.
Claims (4)
1. a paint liquid for Parylene C film surface cure UV-light, meter includes following component by weight:
Polyester ester oligomer 75-86 part,
Aliphatic polyurethane six origoester acrylate 10-20 part,
Light trigger 4-5 part, ultraviolet absorption wavelength 260 ~ 360nm;
Ethyl acetate 90-400 part;
Wherein, described light trigger is 2-hydroxy-2-methyl-1-phenyl-1-acetone;
The making method of described paint liquid operates in the steps below:
The first step, by polyester ester oligomer 75-86 part, aliphatic polyurethane six origoester acrylate 10-20 part puts into different vessels, with 200-500 object cloth respectively by two container closures, is positioned over temperature 16-24 DEG C, dries 45-50h in the loft drier of humidity < 20%;
Second step, take out dried polyester ester oligomer, aliphatic polyurethane six origoester acrylate, mix with light trigger 4-5 part, stir 1-3min, then add ethyl acetate solvent 90-400 part stirring 2-3min, obtain required paint liquid, then sealed, keep in Dark Place.
2. utilize paint liquid described in claim 1 to the method for Parylene C exemplar film surface cure UV-light paint film:
The first step, cleans Parylene C exemplar film surface, namely with film surface 2-3 time of ethyl acetate wiping cleaning Parylene C exemplar; This exemplar film surface is cleaned 2-3 time again with sherwood oil wiping;
Second step, with the paint liquid prepared, be applied to the film surface of Parylene C exemplar, coating thickness is 0.01mm ~ 0.15mm, then exemplar is placed in 50-55 DEG C of baking oven baking 5 ~ 6min;
3rd step, takes out exemplar from baking oven, then puts into ultraviolet light polymerization equipment, irradiates 13-16s, namely makes Parylene C exemplar film surface cure UV-light paint film.
3. paint liquid according to claim 2 is to the method for Parylene C exemplar film surface cure UV-light paint film, it is characterized in that: in the 3rd step, and the described mode on Parylene C film surface that is applied to by paint liquid is for spraying or brushing.
4. paint liquid according to claim 2 is to the method for Parylene C exemplar film surface cure UV-light paint film, it is characterized in that: in the 3rd step, and the lamp of described ultraviolet light polymerization equipment is medium pressure mercury lamp, and power density is 24-28mW.
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| CN201210502843.2A CN102924989B (en) | 2012-11-30 | 2012-11-30 | Liquid paint for preparing ultraviolet light curing film on surface of poly-chlorinated p-xylene film and painting method |
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| CN201210502843.2A CN102924989B (en) | 2012-11-30 | 2012-11-30 | Liquid paint for preparing ultraviolet light curing film on surface of poly-chlorinated p-xylene film and painting method |
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| CN102924989B true CN102924989B (en) | 2015-05-13 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020915A (en) * | 2010-12-15 | 2011-04-20 | 惠州市长润发涂料有限公司 | Ultraviolet light cured primer |
| CN102220084A (en) * | 2010-04-14 | 2011-10-19 | 比亚迪股份有限公司 | Photocureable coating and curing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220084A (en) * | 2010-04-14 | 2011-10-19 | 比亚迪股份有限公司 | Photocureable coating and curing method thereof |
| CN102020915A (en) * | 2010-12-15 | 2011-04-20 | 惠州市长润发涂料有限公司 | Ultraviolet light cured primer |
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