CN107384109A - A kind of high reliability UV solidifications conformal coating and preparation method thereof - Google Patents
A kind of high reliability UV solidifications conformal coating and preparation method thereof Download PDFInfo
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- CN107384109A CN107384109A CN201710608779.9A CN201710608779A CN107384109A CN 107384109 A CN107384109 A CN 107384109A CN 201710608779 A CN201710608779 A CN 201710608779A CN 107384109 A CN107384109 A CN 107384109A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D147/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds; Coating compositions based on derivatives of such polymers
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Abstract
The invention provides a kind of high reliability UV to solidify conformal coating, is made up of the raw material of following parts by weight：20~40 parts of epoxidized polybutadiene modified acrylic ester resin, 30~50 parts of dicyclopentadiene acrylate monomer, 15 25 parts of the acrylate monomer containing rigid radical, 1~7 part of light trigger.High reliability UV solidification conformal coatings prepared by the present invention, two kinds of rubber-type molecular structures of polybutadiene and dicyclopentadiene are introduced in the macromolecular of polymer, such a molecular structure has more preferable water resistance and salt fog resistance, can solve conventional conformal coating not salt spray resistance the defects of.In addition, special epoxidized polybutadiene modified acrylic ester resin is synthesized, carbon-carbon double bond in epoxidation propylene acrylate structure has higher reactivity, and obtained conformal coating solidification energy is lower, is a high reliability UV solidification conformal coatings with low energy consumption.
Description
Technical field
The invention belongs to photo-curing material field, is related to a kind of high reliability UV solidifications conformal coating and preparation method thereof,
Suitable for the application demand of high-end line plate protection.
Background technology
Conformal coating（conformal coating）Exactly coated in the printed substrate for having welded plug connector elements（PCB）On
Very thin protection materials.It can strengthen the anti-moisture and soil-repellent ability of electronic circuit and component and prevent that solder joint and conductor from being invaded
Erosion, it can also play a part of shielding and eliminate electromagnetic interference and prevent line short, improve the insulating properties of wiring board.This
Outside, coating diaphragm is also beneficial to the rub resistance and solvent resistance of circuit and component, and can release temperature cyclically-varying
Caused pressure, the stability of electronic product is improved, is increased the service life.Except for electronics industry, conformal coating is in vapour
Also it is widely used in terms of turner industry, aerospace industries, national defense industry and bioengineering.
Photocureable coating is also known as ultraviolet light（UV）It is coating material solidified, it is one kind of radiation curable coating, refers mainly in light irradiation
Down can crosslinking curing film forming rapidly a kind of new coating, because of its efficient application and the feature such as environment-friendly, in coating row
Industry is used widely.Compared with solvent based coating, photocureable coating has fast curing rate, thing volatile solvent, saves energy
Source, expense be low, can automated production the features such as.
But conventional UV solidification conformal coatings also have its weak point, such as solidification energy is high, the high and low tenderness of water absorption rate
Toughness is bad and the shortcomings of salt spray resistance deficiency, high reliability UV of the invention solidification conformal coating can solve these and lack
Fall into.
The content of the invention
In order to solve to show bad difficulty during UV in the prior art solidifies conformal coating in terms of salt spray resistance, the solidification energy
Topic, the invention provides a kind of high reliability UV solidification conformal coatings and preparation method thereof, height can be met to reach conformal coating
The demand of reliability.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：
A kind of high reliability UV solidifies conformal coating, is made up of the raw material of following parts by weight：Epoxidized polybutadiene modified propylene
20~40 parts of acid ester resin, 30~50 parts of dicyclopentadiene acrylate monomer, the acrylate monomer 15-25 containing rigid radical
Part, 1~7 part of light trigger.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, the epoxidized polybutadiene modified acrylic ester resin, refer to use epoxidized polybutadiene and propylene
The epoxidized polybutadiene modified acrylic ester resin with polybutadiene rubber structure of acid synthesis, the poly- fourth of described epoxidation
Diene includes：Epolead PB3600, the Epolead PB4700 of Japanese Daicel company, No. CAS：71342-74-0.Epoxy
Changing the synthetic method of polybutadiene-modified acrylate is：By 1 mole of epoxidized polybutadiene, 2 moles of acrylic acid,
Catalyst triphenylphosphine（50ppm）It is added in the three-necked flask with thermometer, by temperature control in 100-120 degree, reaction 3
Stop heating after hour, can obtain epoxidized polybutadiene modified acrylic ester resin.
Further, the dicyclopentadiene acrylate monomer refers to the 512AS (No. CAS of FDAC chemical conversion：65983-
31-5) and 512M (No. CAS：68586-19-6), strand contains the molecular structure of cyclopentadiene.
Further, the acrylate monomer containing rigid radical, 4- tert-butylcyclohexyl acrylate is referred to（CAS：
84100-23-2）With methacrylic acid to t-butyl cyclohexyl methacrylate（CAS: 46729-07-1）, such as：SARTOMER companies
SR217 and SR218, molecular structural formula are as follows：
Methacrylic acid is to t-butyl cyclohexyl methacrylate
4- tert-butylcyclohexyl acrylate
Further, the light trigger is the trade mark 1173（2- hydroxy-2-methyl -1- phenylacetones）、184（1- hydroxy-cyclohexyls
Benzophenone）、907（2- methyl isophthalic acids-（4- first mercaptophenyls）- 2- morpholine -1- acetone）、369（2- benzyl -2- dimethylaminos -1-
（4- morpholinyl phenyls）- 1- butanone）、819（It is double（2,4,6- trimethylbenzoyls）Phenylphosphine oxide）, 651 (α, α '-dimethyl
Benzil ketals), ITX (isopropyl thioxanthone), BP (benzophenone), OMBB (o-benzoyl yl benzoic acid methyl esters), TPO
One kind or any several mixture in (2,4,6- trimethyl benzoyl diphenyl bases phosphorous oxide).
A kind of preparation method of high reliability UV solidifications conformal coating of the present invention includes：Weigh epoxidation polybutadiene
20~40 parts of alkene modified acrylic ester resin, 30~50 parts of dicyclopentadiene acrylate monomer, the acrylic acid containing rigid radical
Ester monomer 15-25 parts, 1~7 part of light trigger, sequentially add in mixer, be evacuated to vacuum for -0.08~-
0.05MPa, stirred 0.5~2 hour in 500~1000 revs/min, stir, hang to room temperature, pack naturally.
The beneficial effects of the invention are as follows：High reliability UV solidification conformal coatings prepared by the present invention, at big point of polymer
Two kinds of rubber-type molecular structures of polybutadiene and dicyclopentadiene are introduced in son, such a molecular structure has more preferable water resistance
And salt fog resistance, can solve conventional conformal coating not salt spray resistance the defects of.In addition, special epoxidized polybutadiene is synthesized
Modified acrylic ester resin, the carbon-carbon double bond in epoxidation propylene acrylate structure have higher reactivity, and what is obtained is conformal
Paint solidification energy is lower, is a high reliability UV solidification conformal coatings with low energy consumption.In addition, the polybutadiene introduced
Rubber structure, there is excellent low temperature flexibility, obtained conformal coating has wider temperature in use, is amenable to high/low temperature punching
The reliability testing hit, can have with protection circuit plate under harsh environment temperature with excellent performance.
Embodiment
The principles and features of the present invention are described below, and the given examples are served only to explain the present invention, is not intended to limit
Determine the scope of the present invention.
Synthetic example
The synthetic method of epoxidized polybutadiene modified acrylic ester resin is：By 1 mole of epoxidized polybutadiene, 2 moles
Acrylic acid, catalyst triphenylphosphine（50ppm）It is added in the three-necked flask with thermometer, by temperature control in 100-
120 degree, reaction stops heating after 3 hours, can obtain epoxidized polybutadiene modified acrylic ester resin.
Embodiment 1
Accurately weigh the following raw material, epoxidized polybutadiene modified acrylic ester resin, 30g；The 512AS, 40g of Hitachi's chemical conversion；
The SR217 of SARTOMER companies, 20g；Light trigger 184,3g；Light trigger TPO, 1g；Above-mentioned each component is sequentially added double
In planetary power mixing and blending machine, it is -0.08MPa to be evacuated to vacuum, stirs 2 hours, stirs in 500 revs/min, from
So hang to room temperature, obtain high reliability UV solidification conformal coatings, pack.
Embodiment 2
Accurately weigh the following raw material, epoxidized polybutadiene modified acrylic ester resin, 40g；The 512M, 30g of Hitachi's chemical conversion；
The SR217 of SARTOMER companies, 18g；Light trigger 184,1g；Light trigger 1173,1g；Above-mentioned each component is sequentially added double
In planetary power mixing and blending machine, it is -0.05MPa to be evacuated to vacuum, stirs 1 hour, stirs in 750 revs/min, from
So hang to room temperature, obtain high reliability UV solidification conformal coatings, pack.
Embodiment 3
Accurately weigh the following raw material, epoxidized polybutadiene modified acrylic ester resin, 20g；The 512AS, 50g of Hitachi's chemical conversion；
The SR218,25g of SARTOMER companies；Light trigger 1173：3g；Light trigger 819：2g, above-mentioned each component is sequentially added
In double-planet power mixing and blending machine, it is -0.06MPa to be evacuated to vacuum, is stirred 1.5 hours in 700 revs/min, and stirring is equal
It is even, hang naturally to room temperature, obtain high reliability UV solidification conformal coatings, pack.
Embodiment 4
Accurately weigh the following raw material, epoxidized polybutadiene modified acrylic ester resin, 35g；The 512M, 40g of Hitachi's chemical conversion；
The SR218 of SARTOMER companies, 25g；Light trigger 184,3g；Light trigger TPO, 1g；Above-mentioned each component is sequentially added double
In planetary power mixing and blending machine, it is -0.07MPa to be evacuated to vacuum, stirs 1 hour, stirs in 800 revs/min, from
So hang to room temperature, obtain high reliability UV solidification conformal coatings, pack.
Embodiment 5
Accurately weigh the following raw material, epoxidized polybutadiene modified acrylic ester resin, 25g；The 512AS, 45g of Hitachi's chemical conversion；
The SR217 of SARTOMER companies, 25g;Light trigger 1173,3g；Light trigger TPO, 4g；Above-mentioned each component is sequentially added double
In planetary power mixing and blending machine, it is -0.08MPa to be evacuated to vacuum, is stirred 0.5 hour in 1000 revs/min, and stirring is equal
It is even, hang naturally to room temperature, obtain high reliability UV solidification conformal coatings, pack.
Comparative example 1
Accurately weigh the following raw material, the CN8881 (two degrees of functionality, polyester-type) of Sartomer, 30g；IBOA, 60g；HEA,
10g；Light trigger 184,3g；Light trigger TPO, 1g；Above-mentioned each component is sequentially added in double-planet power mixing and blending machine,
It is -0.08MPa to be evacuated to vacuum, is stirred 2 hours in 500 revs/min, stirs, hang naturally to room temperature, obtain UV and consolidate
Change conformal coating, pack.
Comparative example 2
It is accurate to weigh the following raw material, the 5220 of Taiwan Changxing company（Two degrees of functionality, polyether-type）, 35g；THFA, 41g；IBOA,
15g；Light trigger 1173,3g；Light trigger TPO, 1g；Above-mentioned each component is sequentially added into double-planet power mixing and blending machine
Interior, it is -0.05MPa to be evacuated to vacuum, is stirred 1 hour in 750 revs/min, stirs, hang to room temperature, obtain naturally
UV solidifies conformal coating, packs.
Solidify the performance of conformal coating by a kind of high reliability UV of the following experimental test present invention.
Test example
Salt spray resistance is tested：By GB/T 10125-1997 standard testings.
Water absorption rate test：By GB/T 1034-1998 standard testings, 100 degree of boiling water, 2h.
Test result is as shown in table 1：
Sample made from the embodiment 1-5 of table 1 and common UV solidification conformal coating contrast test results
| Sample | Solidification energy | Water absorption rate | Salt spray resistance | Low temperature flexibility |
| The sample of embodiment 1 | 800mJ/cm2 | 0.4% | It is outstanding, no rust spot | It is outstanding |
| The sample of embodiment 2 | 800mJ/cm2 | 0.5% | It is outstanding, no rust spot | It is outstanding |
| The sample of embodiment 3 | 900mJ/cm2 | 0.6% | It is outstanding, no rust spot | It is outstanding |
| The sample of embodiment 4 | 800mJ/cm2 | 0.5% | It is outstanding, no rust spot | It is outstanding |
| The sample of embodiment 5 | 850mJ/cm2 | 0.6% | It is outstanding, no rust spot | It is outstanding |
| The sample of comparative example 1 | 1200mJ/cm2 | 1.2% | Typically, there is rust spot | - 40 degree embrittlements |
| The sample of comparative example 2 | 1300mJ/cm2 | 1.0% | Typically, there is rust spot | - 40 degree embrittlements |
It can be seen from the results above that a kind of high reliability UV solidification conformal coatings of the present invention are protected with existing common UV solidifications
Shape coating is compared, and has good salt spray resistance, has lower solidification energy, low temperature flexibility is more preferably.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (6)
1. a kind of high reliability UV solidifies conformal coating, it is characterised in that is made up of the raw material of following parts by weight：The poly- fourth of epoxidation
Diene modified 20~40 parts of acrylate, 30~50 parts of dicyclopentadiene acrylate monomer, the propylene containing rigid radical
Acid ester monomer 15-25 parts, 1~7 part of light trigger；
The synthetic method of the epoxidized polybutadiene modified acrylic ester resin is：By 1 mole of epoxidized polybutadiene, 2
Mole acrylic acid, catalyst triphenylphosphine be added in the three-necked flask with thermometer, by temperature control in 100-120
Degree, reaction stop heating after 3 hours, can obtain epoxidized polybutadiene modified acrylic ester resin；The catalyst amount is
The 50ppm of material total amount.
2. conformal coating according to claim 1, it is characterised in that the epoxidized polybutadiene is that Japanese Daicel is public
One kind in Epolead PB3600, the Epolead PB4700 of department.
3. conformal coating according to claim 1, it is characterised in that the dicyclopentadiene acrylate monomer is in a few days
One kind in the 512AS and 512M of the chemical conversion of this Hitachi.
4. conformal coating according to claim 1, it is characterised in that the acrylate monomer containing rigid radical, be
Refer to 4- tert-butylcyclohexyls acrylate and methacrylic acid to one kind in t-butyl cyclohexyl methacrylate.
5. conformal coating according to claim 1, it is characterised in that the light trigger is 2- hydroxy-2-methyl -1- benzene
Benzylacetone, 1- hydroxy cyclohexyl phenylketones, 2- methyl isophthalic acids-（4- first mercaptophenyls）- 2- morpholine -1- acetone, 2- benzyl -2- diformazans
Amino -1-（4- morpholinyl phenyls）It is -1- butanone, double（2,4,6- trimethylbenzoyls）Phenylphosphine oxide, α, α '-dimethyl benzene are even
Acyl ketal, isopropyl thioxanthone, benzophenone, o-benzoyl yl benzoic acid methyl esters, 2,4,6- trimethyl benzoyl diphenyls
One kind or any several mixture in base phosphorous oxide.
6. conformal coating according to claim 1, it is characterised in that preparation method includes：Weigh epoxidized polybutadiene
20~40 parts of modified acrylic ester resin, 30~50 parts of dicyclopentadiene acrylate monomer, the acrylate containing rigid radical
Monomer 15-25 parts, 1~7 part of light trigger, sequentially add in mixer, and it is -0.08~-0.05MPa to be evacuated to vacuum,
Stirred 0.5~2 hour in 500~1000 revs/min, stir, hang to room temperature, pack naturally.
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| CN201710608779.9A CN107384109B (en) | 2017-07-25 | 2017-07-25 | High-reliability UV (ultraviolet) curing conformal coating and preparation method thereof |
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| CN201710608779.9A CN107384109B (en) | 2017-07-25 | 2017-07-25 | High-reliability UV (ultraviolet) curing conformal coating and preparation method thereof |
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| CN107384109A true CN107384109A (en) | 2017-11-24 |
| CN107384109B CN107384109B (en) | 2020-02-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109111771A (en) * | 2018-05-31 | 2019-01-01 | 烟台德邦科技有限公司 | A kind of moisture cured high reliability UV conformal coating and preparation method thereof |
| CN109957368A (en) * | 2017-12-22 | 2019-07-02 | 比亚迪股份有限公司 | A kind of LED-UV solidification Optical adhesive composition, preparation method and its solidify coating |
| CN116162431A (en) * | 2022-12-30 | 2023-05-26 | 烟台德邦科技股份有限公司 | Hybrid curing damp-heat resistant adhesive and preparation method thereof |
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| JPS6155807A (en) * | 1984-08-28 | 1986-03-20 | 日立化成工業株式会社 | Thermosetting resin composition for film capacitor |
| JP2005062451A (en) * | 2003-08-12 | 2005-03-10 | Kyocera Chemical Corp | Photosensitive thermosetting resin composition |
| CN101392152A (en) * | 2008-09-28 | 2009-03-25 | 广东恒大新材料科技有限公司 | Photo-setting adhesive |
| CN103865470A (en) * | 2014-02-12 | 2014-06-18 | 惠晶显示科技（苏州）有限公司 | Light-curing edge sealing adhesive |
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2017
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6155807A (en) * | 1984-08-28 | 1986-03-20 | 日立化成工業株式会社 | Thermosetting resin composition for film capacitor |
| JP2005062451A (en) * | 2003-08-12 | 2005-03-10 | Kyocera Chemical Corp | Photosensitive thermosetting resin composition |
| CN101392152A (en) * | 2008-09-28 | 2009-03-25 | 广东恒大新材料科技有限公司 | Photo-setting adhesive |
| CN103865470A (en) * | 2014-02-12 | 2014-06-18 | 惠晶显示科技（苏州）有限公司 | Light-curing edge sealing adhesive |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109957368A (en) * | 2017-12-22 | 2019-07-02 | 比亚迪股份有限公司 | A kind of LED-UV solidification Optical adhesive composition, preparation method and its solidify coating |
| CN109111771A (en) * | 2018-05-31 | 2019-01-01 | 烟台德邦科技有限公司 | A kind of moisture cured high reliability UV conformal coating and preparation method thereof |
| CN116162431A (en) * | 2022-12-30 | 2023-05-26 | 烟台德邦科技股份有限公司 | Hybrid curing damp-heat resistant adhesive and preparation method thereof |
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| CN107384109B (en) | 2020-02-07 |
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