CN112662320A - Double-curing coating adhesive - Google Patents
Double-curing coating adhesive Download PDFInfo
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- CN112662320A CN112662320A CN202011536354.XA CN202011536354A CN112662320A CN 112662320 A CN112662320 A CN 112662320A CN 202011536354 A CN202011536354 A CN 202011536354A CN 112662320 A CN112662320 A CN 112662320A
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Abstract
The invention relates to a dual-curing coating adhesive, which comprises: 20-40 parts of alkoxy-terminated polymer, 30-50 parts of acrylic-group-terminated polymer, 5-10 parts of acrylate monomer, 5-10 parts of active diluent monomer, 1-5 parts of silane coupling agent, 1-3 parts of photoinitiator, 0.5-1.0 part of antioxidant, 0.01-0.05 part of fluorescent whitening agent and 0.5-2.5 parts of catalyst; the UV moisture dual-curing coating adhesive disclosed by the invention can be quickly positioned, the production efficiency is improved, the production cost is reduced, the defect that a shadow part or a bottom layer part cannot be cured can be avoided, and the protection effect of the coating adhesive is improved.
Description
Technical Field
The invention relates to a dual-curing coating adhesive, in particular to a UV (ultraviolet) moisture dual-curing coating adhesive, belonging to the field of adhesives.
Background
The coating glue is widely applied to electronic parts such as hybrid integrated circuits, automobile electronic control boards, electronic circuit boards, flexible printed circuit boards, computer control boards, industrial control boards, semiconductor crystal circuit protection and the like. The system mainly relates to various power supplies, adapters, chargers, LEDs, the automobile industry, aerospace, navigation, small transformers, home appliances and offices (televisions, refrigerators, washing machines, microwave ovens, range hoods, air conditioners, copiers, fax machines, electric rice cookers, DVDs, video disc players, electric hair dryers, electric kettles, water heaters, dust collectors and the like), mobile phone digital products (mobile phones, tablet computers, digital cameras, digital video cameras, MP3, games, mobile power supplies, digital accessories, computers and the like), instruments, precision instruments, carrier communication, protection of electronic components, normal machine protection and the like.
The coating adhesive has the functions of dust prevention, water prevention, moisture prevention, shock prevention, surface aging prevention, electric leakage prevention and the like, and is mainly used for protecting a PCB and related equipment from being influenced by the environment, prolonging the service life of the PCB and the related equipment and ensuring the PCB and the related equipment to work safely and stably.
Currently, the most applied coating glues mainly include the following types: acrylic, PU, and silica gel. However, they have some disadvantages, among which the acrylic coating glues can be divided into two types, one being solvent-based and not meeting the environmental requirements; the other is of the UV curing type, and the shadow portion is not easily cured. PU-based coating pastes tend to foam when cured at wet interfaces, causing poor protection or electronic failure. The strength of the silica gel coating adhesive is low after curing, the silica gel coating adhesive is easy to tear, the curing speed is low, and the production cycle is influenced.
In order to better meet the use requirements of customers, it is necessary to develop a coating adhesive which has low toxicity, environmental protection, high curing speed and is suitable for various occasions and workpieces.
Disclosure of Invention
The novel coating adhesive provided by the invention can be rapidly cured into a film by UV (ultraviolet) and can be crosslinked and cured by moisture in an area which is difficult to irradiate by ultraviolet light, so that various complex circuit boards and workpieces can be effectively protected.
The invention relates to a dual-curing coating adhesive, which comprises: 20-40 parts of alkoxy-terminated polymer, 30-50 parts of acrylic-group-terminated polymer, 5-10 parts of acrylate monomer, 5-10 parts of active diluent monomer, 1-5 parts of silane coupling agent, 1-3 parts of photoinitiator, 0.5-1.0 part of antioxidant, 0.01-0.05 part of fluorescent whitening agent and 0.5-2.5 parts of catalyst.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the alkoxy-terminated polymer has a structure in which the viscosity thereof is in the range of 5000 to 12000 mPa.s.
The material has the beneficial effects that: the two ends of the molecular chain are provided with alkoxy silane, and the alkoxy silane can generate chemical crosslinking reaction when meeting moisture, thereby playing the role of moisture curing.
Further, the acrylic group-terminated polymer has a structure in which the viscosity ranges from 4000 to 8000 mPa.s.
The material has the beneficial effects that: the molecular chain contains double bonds, so that the UV curing effect can be achieved. The two resins have consistent main chain structures, have good compatibility when matched, and finally form the UV moisture dual-curing coating adhesive with excellent performance under the matching of other raw materials.
Further, the acrylate monomer is one or a mixture of more of hydroxyethyl acrylate, hydroxypropyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, allyl methacrylate and glycidyl methacrylate.
Further, the reactive diluent monomer is one or a mixture of more of trimethylolpropane triacrylate, 5,7, 7-trimethyl-2- (1,3, 3-trimethylbutyl) octyl 2-propionate, isobornyl acrylate, isobornyl methacrylate, 2-phenoxyethyl acrylate, 1, 6-hexanediol diacrylate, tripropylene glycol dimethacrylate, ethoxylated tripropylene glycol diacrylate and tetrahydrofuran acrylate.
Further, the silane coupling agent is one or a mixture of more of vinyl trimethoxy silane, 3- (1, 3-dimethylbutene) aminopropyl triethoxy silane, N-beta-aminoethyl-gamma-aminopropyl trimethoxy silane, gamma-glycidoxypropyl trimethoxy silane, aminopropyl triethoxy silane and gamma-methacryloxypropyl trimethoxy silane.
Further, the photoinitiator is one or a mixture of more of benzophenone, 2-hydroxy-2-methyl-1-phenyl-1-acetone, phenyl bis (2,4, 6-trimethylbenzoyl) phosphine oxide, ethyl 2,4, 6-trimethylbenzoyl phenylphosphonate and 2-dimethylamino-2- (4-methyl) benzyl-1- [4- (4-morpholinyl) phenyl ] -1-butanone.
Further, the antioxidant is one or a mixture of more of 4,4' -bis (phenylisopropyl) diphenylamine, an antioxidant 168 and an antioxidant 1790.
Further, the fluorescent whitening agent is one or a mixture of two of a fluorescent whitening agent 184 and a fluorescent whitening agent CBS.
Further, the catalyst is neodecanoic acid.
The invention relates to a preparation method of dual-curing coating adhesive, which comprises the following steps: sequentially adding 20-40 parts of alkoxy-terminated polymer, 30-50 parts of acrylic group-terminated polymer, 5-10 parts of acrylate monomer, 5-10 parts of active diluent monomer, 1-3 parts of photoinitiator, 0.5-1.0 part of antioxidant and 0.01-0.05 part of fluorescent brightener into a stirring kettle, stirring and dispersing for 60 minutes at 60 ℃, vacuumizing until the vacuum degree is not less than-0.098 MPa, cooling to below 40 ℃, adding 1-5 parts of silane coupling agent, mixing for 10 minutes in a vacuum state, adding 0.5-2.5 parts of catalyst, mixing for 25 minutes in a vacuum state, and adding N2Sealing and packaging.
The invention has the beneficial effects that: the UV moisture dual-curing coating adhesive can be quickly positioned, the production efficiency is improved, the production cost is reduced, the defect that a shadow part or a bottom layer part cannot be cured can be avoided, and the protective effect of the coating adhesive is improved.
Detailed Description
The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
Example 1
20 parts of alkoxy-terminated polymer with the viscosity of 5000mPa.s, 30 parts of acrylic-terminated polymer with the viscosity of 4000mPa.s, 5 parts of 2-ethylhexyl acrylate, 5 parts of trimethylolpropane triacrylate, 1 part of ethyl 2,4, 6-trimethylbenzoylphenylphosphonate, 0.5 part of 4,4' -bis (phenylisopropyl) diphenylamine and 0.01 part of fluorescent brightener 184 are sequentially added into a stirring kettle, stirred and dispersed at 60 ℃ for 60 minutes and vacuumized, the vacuum degree is not less than-0.098 MPa, cooled to below 40 ℃, 1 part of 3- (1, 3-dimethylbutene) aminopropyltriethoxysilane is added, the mixture is mixed for 10 minutes under vacuum, then 0.5 part of neodecanoic acid is added, the mixture is mixed for 25 minutes under vacuum, and N is added2Sealing and packaging.
Example 2
Adding 40 parts of alkoxy-terminated polymer with the viscosity of 12000mPa.s, 50 parts of acrylic-terminated polymer with the viscosity of 8000mPa.s, 10 parts of hydroxyethyl acrylate, 10 parts of 5,7, 7-trimethyl-2- (1,3, 3-trimethylbutyl) octyl 2-propionate, 3 parts of 2-hydroxy-2-methyl-1-phenyl-1-acetone, 1.0 part of antioxidant 168 and 0.05 part of fluorescent brightener CBS into a stirring kettle in sequence, stirring and dispersing at 60 ℃ for 60 minutes, vacuumizing until the vacuum degree is not less than-0.098 MPa, cooling to below 40 ℃, adding 2 parts of vinyl trimethoxy silane and 3 parts of N-beta-aminoethyl-gamma-aminopropyl trimethoxy silane, mixing for 10 minutes in a vacuum state, then adding 2.5 parts of neodecanoic acid, mixing for 25 minutes in the vacuum state, n is a radical of2Sealing and packaging.
Example 3
30 parts of alkoxy-terminated polymer with the viscosity of 8000mPa.s, 40 parts of acrylic-terminated polymer with the viscosity of 6000mPa.s, 2 parts of hydroxypropyl acrylate, 5 parts of allyl methacrylate, 4 parts of isobornyl acrylate, 3 parts of ethylene oxide tripropylene glycol diacrylate, 1 part of 2-hydroxy-2-methyl-1-phenyl-1-acetone, 1 part of phenyl bis (2,4, 6-trimethylbenzoyl) phosphine oxide, 0.7 part of antioxidant 1790 and 0.03 part of fluorescent brightener 184 are sequentially added into a stirring kettle, stirred and dispersed for 60 minutes at the temperature of 60 ℃ and vacuumized, the vacuum degree is not less than-0.098 MPa, and the mixture is cooled to the temperature of below 40 DEG CAdding 1 part of vinyltrimethoxysilane and 2 parts of gamma-methacryloxypropyltrimethoxysilane, mixing for 10 minutes under vacuum, adding 1.5 parts of neodecanoic acid, and mixing for 25 minutes under vacuum, N2Sealing and packaging.
Example 4
25 parts of an alkoxy-terminated polymer having a viscosity of 6000mPa.s, 35 parts of an acrylic-based-terminated polymer having a viscosity of 7000mPa.s, 4 parts of glycidyl methacrylate, 1 part of butyl acrylate, 3 parts of 2-phenoxyethyl acrylate, 3 parts of tetrahydrofuran acrylate, 0.5 part of ethyl 2,4, 6-trimethylbenzoylphenylphosphonate, 1.0 part of 2-dimethylamino-2- (4-methyl) benzyl-1- [4- (4-morpholinyl) phenyl ] phosphonate]Sequentially adding-1-butanone, 0.5 part of antioxidant 168, 0.5 part of antioxidant 1790 and 0.02 part of fluorescent whitening agent 184 into a stirring kettle, stirring and dispersing at 60 ℃ for 60 minutes, vacuumizing to a vacuum degree of not less than-0.098 MPa, cooling to below 40 ℃, adding 1 part of aminopropyltrimethoxysilane and 0.5 part of 3- (1, 3-dimethylbutene) aminopropyltriethoxysilane, mixing for 10 minutes under a vacuum state, adding 1 part of neodecanoic acid, mixing for 25 minutes under a vacuum state, and adding N2Sealing and packaging.
The performance comparison tests of the examples 1 to 4 and domestic similar products are carried out, the mechanical property data are obtained by testing after curing for 7 days under the conditions of 23 +/-2 ℃ and 50 +/-5% of relative humidity, and the details are shown in the following table 1.
Test example 1
Tensile strength and elongation at break were tested in accordance with GB/T528-1998.
Test example 2
Peel strength was tested according to GB/T2790-1995.
Test example 3
The hardness was tested according to GB/T531-1999.
Test example 4
The dielectric strength was tested according to GB/T1408-2006.
The dielectric constant was tested according to GB/T1693-2006.
The volume resistivity was tested according to GB/T1410-2006.
TABLE 1 test results
The test results in the table show that the UV dual-curing coating adhesive prepared by the invention has the advantages of high surface drying speed, rapid positioning, good curing depth, capability of meeting the use requirements of workpieces with different shapes, no need of worrying about the curing problem of shadow parts, and obviously better mechanical property and electrical property than domestic similar coating adhesive products.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A dual cure coating adhesive comprising: 20-40 parts of alkoxy-terminated polymer, 30-50 parts of acrylic-group-terminated polymer, 5-10 parts of acrylate monomer, 5-10 parts of active diluent monomer, 1-5 parts of silane coupling agent, 1-3 parts of photoinitiator, 0.5-1.0 part of antioxidant, 0.01-0.05 part of fluorescent whitening agent and 0.5-2.5 parts of catalyst;
the alkoxy-terminated polymer has a structure, wherein the viscosity of the alkoxy-terminated polymer is 5000-12000 mPa.s;
2. the dual cure coating adhesive of claim 1, wherein the acrylic-based end-capped polymer has a structure with a viscosity ranging from 4000 to 8000mPa.s,
3. the dual cure coating according to claim 1, wherein the acrylate monomer is one or more of hydroxyethyl acrylate, hydroxypropyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, allyl methacrylate, and glycidyl methacrylate.
4. The dual cure coating according to claim 1, wherein the reactive diluent monomer is one or a mixture of trimethylolpropane triacrylate, 5,7, 7-trimethyl-2- (1,3, 3-trimethylbutyl) octyl 2-propionate, isobornyl acrylate, isobornyl methacrylate, 2-phenoxyethyl acrylate, 1, 6-hexanediol diacrylate, tripropylene glycol dimethacrylate, ethoxylated tripropylene glycol diacrylate, tetrahydrofuran acrylate.
5. The dual cure coating according to claim 1, wherein the silane coupling agent is one or more of vinyltrimethoxysilane, 3- (1, 3-dimethylbutene) aminopropyltriethoxysilane, N- β -aminoethyl- γ -aminopropyltrimethoxysilane, γ -glycidoxypropyltrimethoxysilane, aminopropyltrimethoxysilane, aminopropyltriethoxysilane, and γ -methacryloxypropyltrimethoxysilane.
6. The dual cure coated adhesive of claim 1, wherein the photoinitiator is one or a mixture of benzophenone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, phenylbis (2,4, 6-trimethylbenzoyl) phosphine oxide, ethyl 2,4, 6-trimethylbenzoylphenylphosphonate, 2-dimethylamino-2- (4-methyl) benzyl-1- [4- (4-morpholinyl) phenyl ] -1-butanone; the antioxidant is one or a mixture of more of 4,4' -bis (phenylisopropyl) diphenylamine, an antioxidant 168 and an antioxidant 1790; the catalyst is neodecanoic acid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011536354.XA CN112662320A (en) | 2020-12-23 | 2020-12-23 | Double-curing coating adhesive |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011536354.XA CN112662320A (en) | 2020-12-23 | 2020-12-23 | Double-curing coating adhesive |
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| CN112662320A true CN112662320A (en) | 2021-04-16 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005281493A (en) * | 2004-03-30 | 2005-10-13 | Yokohama Rubber Co Ltd:The | Resin composition |
| JP2013112733A (en) * | 2011-11-28 | 2013-06-10 | Kaneka Corp | Curable composition improved in transparency |
| WO2016167303A1 (en) * | 2015-04-15 | 2016-10-20 | 株式会社スリーボンド | Photocurable composition, bonding adhesive using same, cured product, curing method and reworking method |
| CN110607074A (en) * | 2019-09-18 | 2019-12-24 | 烟台德邦科技有限公司 | UV/moisture dual-curing organic silicon resin composition with excellent weather resistance and preparation method thereof |
| CN110713818A (en) * | 2019-11-11 | 2020-01-21 | 王安 | Ultraviolet/moisture dual fast-curing polysiloxane adhesive composition |
| CN111040726A (en) * | 2019-12-26 | 2020-04-21 | 烟台德邦科技有限公司 | UV (ultraviolet) moisture dual-curing organic silicon coating adhesive |
-
2020
- 2020-12-23 CN CN202011536354.XA patent/CN112662320A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005281493A (en) * | 2004-03-30 | 2005-10-13 | Yokohama Rubber Co Ltd:The | Resin composition |
| JP2013112733A (en) * | 2011-11-28 | 2013-06-10 | Kaneka Corp | Curable composition improved in transparency |
| WO2016167303A1 (en) * | 2015-04-15 | 2016-10-20 | 株式会社スリーボンド | Photocurable composition, bonding adhesive using same, cured product, curing method and reworking method |
| CN110607074A (en) * | 2019-09-18 | 2019-12-24 | 烟台德邦科技有限公司 | UV/moisture dual-curing organic silicon resin composition with excellent weather resistance and preparation method thereof |
| CN110713818A (en) * | 2019-11-11 | 2020-01-21 | 王安 | Ultraviolet/moisture dual fast-curing polysiloxane adhesive composition |
| CN111040726A (en) * | 2019-12-26 | 2020-04-21 | 烟台德邦科技有限公司 | UV (ultraviolet) moisture dual-curing organic silicon coating adhesive |
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Application publication date: 20210416 |