CN114350303A - Delayed curing UV (ultraviolet) adhesive for bonding optical glass and aluminum sheet - Google Patents
Delayed curing UV (ultraviolet) adhesive for bonding optical glass and aluminum sheet Download PDFInfo
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- CN114350303A CN114350303A CN202111435349.4A CN202111435349A CN114350303A CN 114350303 A CN114350303 A CN 114350303A CN 202111435349 A CN202111435349 A CN 202111435349A CN 114350303 A CN114350303 A CN 114350303A
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- optical glass
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- glue
- prepolymer
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- 239000000853 adhesive Substances 0.000 title claims abstract description 38
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 38
- 239000005304 optical glass Substances 0.000 title claims abstract description 38
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 230000003111 delayed effect Effects 0.000 title claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 34
- 239000003292 glue Substances 0.000 claims abstract description 27
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 23
- 239000003112 inhibitor Substances 0.000 claims abstract description 20
- 239000000178 monomer Substances 0.000 claims abstract description 17
- 238000002360 preparation method Methods 0.000 claims abstract description 13
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 11
- 239000004593 Epoxy Substances 0.000 claims abstract description 5
- 239000003999 initiator Substances 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 15
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 14
- 239000003822 epoxy resin Substances 0.000 claims description 12
- 229920000647 polyepoxide Polymers 0.000 claims description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 8
- 150000001412 amines Chemical class 0.000 claims description 8
- 229920000570 polyether Polymers 0.000 claims description 8
- 125000002091 cationic group Chemical group 0.000 claims description 7
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 150000003254 radicals Chemical class 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 239000012949 free radical photoinitiator Substances 0.000 claims description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 4
- 230000001588 bifunctional effect Effects 0.000 claims description 4
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical class I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical class C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims description 4
- 238000004383 yellowing Methods 0.000 claims description 4
- -1 acrylate phosphate ester Chemical class 0.000 claims description 3
- 239000012952 cationic photoinitiator Substances 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- JIGUICYYOYEXFS-UHFFFAOYSA-N 3-tert-butylbenzene-1,2-diol Chemical compound CC(C)(C)C1=CC=CC(O)=C1O JIGUICYYOYEXFS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229940120693 copper naphthenate Drugs 0.000 claims description 2
- SEVNKWFHTNVOLD-UHFFFAOYSA-L copper;3-(4-ethylcyclohexyl)propanoate;3-(3-ethylcyclopentyl)propanoate Chemical compound [Cu+2].CCC1CCC(CCC([O-])=O)C1.CCC1CCC(CCC([O-])=O)CC1 SEVNKWFHTNVOLD-UHFFFAOYSA-L 0.000 claims description 2
- WDHYRUBXLGOLKR-UHFFFAOYSA-N phosphoric acid;prop-2-enoic acid Chemical group OC(=O)C=C.OP(O)(O)=O WDHYRUBXLGOLKR-UHFFFAOYSA-N 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 20
- 239000000463 material Substances 0.000 description 6
- 238000010998 test method Methods 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses delayed curing UV (ultraviolet) glue for bonding optical glass and an aluminum sheet and a preparation method thereof, and relates to the technical field of glue preparation. The UV adhesive mainly comprises the following components: 30-70% of prepolymer, 20-40% of epoxy oligomer resin, 10-35% of active monomer, 1.0-3.0% of auxiliary agent, 0.5-2.0% of polymerization inhibitor and 1.0-10.0% of photoinitiator composition. The UV glue can be initiated by ultraviolet light, and when the UV light source is removed, the glue can be slowly cured. The method has the advantages of simple operation, certain operable time, solving the problem of complex operation process of the optical device, improving the glue utilization efficiency and avoiding the problem of influence on the device performance caused by heating and curing.
Description
Technical Field
The invention relates to the technical field of glue preparation, in particular to delayed curing type optical UV glue for bonding optical glass and various aluminum electronic parts and other non-transparent media such as aluminum sheets and the like, and a preparation method thereof.
Background
With the rise of China in the manufacturing fields of industries such as mobile phones, televisions, computers and the like, the preparation and supply of electronic part manufacturing materials in some key core fields are very important, wherein the technology for fixing and bonding the tiny electronic parts on the optical glass is one of the neck clamping technologies, as the tiny electronic parts are very small and are only hundreds of micrometers, and most of the tiny electronic parts are made of opaque materials, especially, some application scenes are very complicated, and if the transparent base materials of bonded devices cannot be fully exposed, the difficulty of structural fixation is increased.
If a certain liquid bonding material is used, the positioning can be immediately carried out after the glue is coated, and then the curing can be automatically completed without heating or other curing conditions in a closed environment, the adhesive is a good adhesive which can be matched with the bonding process of optical parts, so that the technical difficulty to be solved can be realized only by realizing the unification of the curing positioning and the delayed slow curing through an ultraviolet light curing technology and technical innovation.
The invention solves the key technical problem of the core through reasonable compatibility of various materials and technical innovation of a curing means.
Disclosure of Invention
Aiming at the problem in practical application, the invention aims to provide a delayed curing type optical UV adhesive for bonding non-transparent media such as optical glass, aluminum sheets and other various electronic parts, and a preparation method thereof. After the UV adhesive prepared by the invention is irradiated by ultraviolet rays, the UV adhesive can play a part of the function of initial adhesion to realize the positioning of adhered parts, and the UV adhesive can be cured by a slow dark reaction within the subsequent 24 hours and complete the complete curing.
The specific scheme is as follows:
the delayed curing type UV adhesive for bonding optical glass and a non-transparent medium such as an aluminum sheet is characterized by comprising the following components in percentage by weight: 30-70% of prepolymer, 20-40% of epoxy resin, 10-35% of active monomer, 1.0-3.0% of auxiliary agent, 0.5-2.0% of polymerization inhibitor and 1.0-10.0% of photoinitiator composition.
The prepolymer is selected from hexa-functional group pure carbon main chain polyurethane methacrylate prepolymer, the epoxy resin is a bifunctional modified epoxy acrylate oligomer, and the selected epoxy oligomer has the characteristics of low viscosity, good yellowing resistance and weather resistance, high curing speed and the like; the active monomer is selected from acrylate phosphate ester monomers; the auxiliary agent is selected from a mixture of low-molecular acrylic acid and tetrahydrofuran; the photoinitiator compound composition is a compound composition of a free radical photoinitiator and a cationic initiator and polyether amine.
The delayed curing UV glue for bonding optical glass and aluminum sheet as claimed in claim 1, wherein the prepolymer is selected from hexafunctional pure carbon backbone polyurethane methacrylate prepolymer, and the prepolymer accounts for 50-73% of the weight of the UV glue, and has a weight average molecular weight of 35000-55000.
The UV-curable adhesive for bonding optical glass and aluminum sheets according to claim 1, wherein the epoxy resin is a bifunctional modified epoxy acrylate oligomer, and the selected epoxy oligomer has the characteristics of low viscosity, good yellowing resistance and weather resistance, high curing speed and the like; to ensure good weather resistance and fast curing properties; the viscosity is between 500 and 1000cps at normal temperature, so that better dissolving and mixing performance is ensured.
The delayed curing UV glue for bonding optical glass and aluminum sheets as claimed in claim 1, wherein the reactive monomer is 10-35% by weight of the UV glue, and the reactive monomer is selected from acrylate phosphate.
The UV-curable adhesive for bonding optical glass and aluminum sheet according to claim 1, wherein the auxiliary is selected from a specific mixture of acrylic acid and tetrahydrofuran, and the total amount of the auxiliary is controlled to be not more than 1.0-3.0% by mass.
The UV delayed-curing adhesive for bonding optical glass and aluminum sheets according to claim 1, wherein the polymerization inhibitor is 0.5-2.0% by weight of the UV adhesive, and the polymerization inhibitor is selected from one or a compound of 2 of 3 polymerization inhibitors selected from hydroquinone, tert-butyl catechol and copper naphthenate.
The delayed curing UV adhesive for bonding optical glass and an aluminum sheet according to claim 1, wherein the photoinitiator composition is a compound composition of a free radical and cationic initiator and polyether amine, and accounts for 1.0-10.0% of the weight of the UV adhesive; the free radical photoinitiator is selected from one of 1173 and 184, the cationic photoinitiator is selected from one of iodonium salt and sulfonium salt, a compound mixture is formed and then further mixed with polyether amine, and finally, a dark reaction system which is favorable for delaying curing is formed by selecting the molar ratio of the iodonium salt to the sulfonium salt to be 5:5:1 through experiments.
The UV-curable adhesive for bonding optical glass and aluminum sheets according to claim 1, wherein the prepolymer, the epoxy resin, the reactive monomer, the auxiliary agent, the polymerization inhibitor and the photoinitiator compound according to claims 2 to 7 are sequentially added into a three-dimensional mixer, the temperature is maintained at not higher than 80 ℃, the mixture is dispersed and mixed for 20 minutes at a rotation speed of 500 rpm, and then the mixture is filtered by a 15-micron filter screen to complete the preparation.
Compared with the prior art, the technical innovation points of the invention are as follows:
the formula system of the UV adhesive adopts various initiator compositions, namely the photoinitiator composition is a compound composition of free radicals, cationic initiators and polyether amine, and accounts for 1.0-3.0% of the weight of the UV adhesive; and the free radical photoinitiator is selected from one of 1173 and 184, the cationic photoinitiator is selected from one of iodonium salt and sulfonium salt, a compound mixture is formed and then further mixed with polyether amine, and finally, a dark reaction system which is favorable for delaying curing is formed by selecting the three components according to the molar ratio of 5:5:1 through repeated tests.
The free radical initiator promotes the UV glue to be positioned and cured so as to generate initial positioning adhesive force for bonding an optical device, and the cationic curing agent promotes the UV glue to be subsequently cured in a deep layer so as to generate structural adhesive force.
Because the reaction system adopts epoxy resin and selects polyetheramine to carry out deep curing, the key is that how to ensure that the UV adhesive has good storage time, and hydroquinone and the like are adopted as polymerization inhibitors to ensure that the UV adhesive has longer storage time; however, although the polymerization inhibitor can prevent the polymerization from proceeding, an induction period (i.e., a period of time in which the polymerization rate is zero) is generated during the polymerization, the length of the induction period is proportional to the content of the polymerization inhibitor, and after the polymerization inhibitor is consumed, the induction period is ended, i.e., the polymerization is performed at a normal rate when no polymerization inhibitor is present. The ratio of the mass of inhibitor to the radical initiator was between 1:3 and 1:2, in terms of the amount of substance, after trial and error. Otherwise a good initial positioning force cannot be generated. On the other hand, if the amount of the radical initiator is too large, the curing tends to be too fast, and the effect of the cationic initiator cannot be exerted to obtain the effect of delaying the curing. In the aspect of assistant selection, a mixture of acrylic acid and tetrahydrofuran is used as an assistant, and the tetrahydrofuran can be used as a good polymer synthesis precursor, so that a reaction system can be matched with the acrylic acid during curing, and the crosslinking of an acrylate polymer and the adhesion of a base material are promoted.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to examples, but the present invention is not limited to these examples.
Example one
Based on 100 parts by weight, the UV adhesive composition is prepared according to the following formula:
| components | Nominal of raw material | Providers of | Mass percent% |
| Performed polymer | UV2002 | Zhongshan Qianzui | 35.8 |
| Epoxy resin | UV1868 | Zhongshan Qianzui | 30 |
| Reactive monomer | HEMAP | BASF | 30 |
| Auxiliary agent | AA+THF | BASF | 1 |
| Polymerization inhibitor | HQ | Chemistry of Saimeifei | 1 |
| Initiator A | 1173 | Chemical chemistry of titanium | 1 |
| Initiator B | 101 | Light and chemical engineering | 1 |
| Initiator C | M600 | Henscman | 0.2 |
The preparation method comprises the following steps:
and sequentially adding the prepolymer, the epoxy resin, the active monomer, the auxiliary agent, the polymerization inhibitor and the photoinitiator compound with the mass in the table into a three-dimensional mixer, maintaining the temperature to be not higher than 80 ℃, dispersing and mixing for 20 minutes at a rotating speed of 500 rpm, and filtering the mixture by using a 15-micrometer filter screen to finish the preparation.
The test method comprises the following steps:
the detailed test methods are partially described in another patent application filed by the applicant: 202110670453.5.
1. Viscosity measurement
Brookfield viscosity (Brookfield) was used, ASTM D1084 was used for the tests, and the test temperature was 25 ℃.
2. Delayed curing Performance test
The resulting adhesive composition was dropped onto an optical glass sheet (25mm by 50mm by 5mm) at room temperature (test temperature 25 ℃), the thickness of the glue was controlled with a stainless steel wire having a thickness of 100 μm, and another aluminum alloy sheet of the same size was cross-pasted together. The optical glass sheet/adhesive composition/aluminum alloy sheet test piece was irradiated with an ultraviolet light source (manufacturer: Letai, Germany, model: 1001) for a hardness test sample at an irradiation energy of about 4000mJ/cm2 and an irradiation power of about 130mW/cm2 for about 30 seconds. The optical glass sheet and the aluminum alloy sheet were pulled apart in opposite directions in a direction perpendicular to the surface of the optical glass sheet by a universal tensile machine (manufacturer: Instron corporation, model: Instron5540) to conduct a bonding tensile strength test at a tensile speed of 10mm per minute and a load of 1000N. The obtained tensile value is divided by the overlapping area of the optical glass sheet and the optical glass sheet.
a. Initial positioning and curing tension test: placing the sample in a standard environment at 23C and 50% RH relative humidity, and testing the tensile shear strength of the sample;
b. and (3) testing the bonding strength and the tensile force after complete curing: standing a part of positioned samples for 24 hours, and testing the final cured tensile force of the samples;
c. and (3) aging test of the cured sample after high temperature and high humidity: the fully cured samples were placed in an 85C, 90% relative humidity environment and aged for 300 hours. And (5) taking out the sample, and observing whether the sample has cracking, degumming or air bubble problems. The aged samples were then allowed to stand for 24 hours at a standard ambient of 23C, 50% RH relative humidity.
3. Hardness test after UV glue curing
In a circular aluminum foil tray (diameter about 4cm), a sample having a thickness of about 2cm was poured. The sample was placed under uv light for sufficient curing for 60 seconds, wherein the curing light source was a hand-held shadowless lamp (purchased from commercial website such as Tanbao et al) covering the 200nm-400nm uv band, the irradiation energy was about 8000mJ/cm2, and the radiation power was about 130mW/cm 2.
During the hardness test, three adhesive films with the same size and the thickness of 2.2mm are selected. Hardness values at 5mm thickness were measured on a Shore Durometer at 25 ℃ and 60% relative humidity.
4 anti-aging bonding strength (unit: MPa)
The glue is used for bonding an optical glass substrate, the optical glass substrate is aged for 300 hours at the relative humidity of 85 ℃/90 percent RH, and the retention rate of the tensile strength is calculated by dividing the bonding strength measured after aging by the bonding strength which is not aged.
5. Elongation at break test for UV glue
Strips of 0.6mm by 10mm by 50mm size were prepared and cured under the same tensile strength test conditions. The elongation at break test was carried out on the rubber strip specimen using a universal tensile machine (manufacturer: Instron, model: Instron 5540). The drawing speed was 300mm per minute.
6. Light transmittance
On a 40mm x 60mm x 2.0mm optical glass sheet, the thickness was controlled by a stainless steel wire with a diameter of 0.1mm, approximately 0.25g of sample was uniformly placed in the center of the optical glass sheet, which was covered with another 40mm x 60mm x 2.0mm optical glass sheet, which was gently forced to flow the sample into a ring shape, and placed under ultraviolet light for sufficient curing. The above light source was used with an irradiation energy of about 4000m J/cm2, a radiation power of about 130m W/cm2, and an irradiation time of about 30 seconds. The samples were placed in a standard environment at 23C, 50% RH relative humidity, allowed to stand for 24 hours, and tested for optical properties at room temperature.
Specifically, the following description is provided: the UV adhesive is mainly used for bonding optical glass and bonding optical glass and non-transparent optical devices such as metal aluminum sheets, and in the embodiment, the optical glass and the optical aluminum sheet are bonded for testing, because the performance of the optical aluminum sheet is more active compared with that of the optical glass, the optical glass and the optical aluminum sheet are bonded for increasing the bonding difficulty, so that the testing is simpler and more efficient.
After the test by the method, the performance of the UV glue obtained in example 1 is as follows:
example two:
the UV adhesive composition was formulated as follows (preparation and test methods were the same as in example one):
| components | Nominal of raw material | Providers of | Mass percent% |
| Performed polymer | UV2002 | Zhongshan Qianzui | 43.6 |
| Epoxy resin | UV1868 | Zhongshan Qianzui | 25 |
| Reactive monomer | HEMAP | BASF | 25 |
| Adjuvant composition | AA+THF | BASF | 1 |
| Polymerization inhibitor | HQ | Chemistry of Saimeifei | 1 |
| Initiator A | 1173 | Chemical chemistry of titanium | 2 |
| Initiator B | 101 | Light and chemical engineering | 2 |
| Initiator C | M600 | Henscman | 0.4 |
The properties of the UV glue obtained in example two are as follows:
example three:
the UV adhesive composition was formulated as follows (preparation and test methods were the same as in example one):
the properties of the UV glue obtained in example three are as follows:
example four:
the UV adhesive composition was formulated as follows (preparation and test methods were the same as in example one):
the properties of the UV glue obtained in example four are as follows:
in summary, comparing examples 1-4, it can be seen from the table that the performance parameters of examples 1-4 are increased with the increasing ratio of prepolymer to monomer and the increasing amount of photoinitiator composition, the performance of UV glue becomes stronger, which is most strongly reflected in example 3, and the performance tends to decrease in example 4 with the increasing amount, which is quite obvious. Therefore, preferred embodiment 3 is a preferred embodiment of the present invention.
Claims (8)
1. The delayed curing UV adhesive for bonding optical glass and an aluminum sheet is characterized by comprising the following components in parts by weight: 30-70% of prepolymer, 20-40% of epoxy resin, 10-35% of active monomer, 1-3% of auxiliary agent, 0.5-2.0% of polymerization inhibitor and 1.0-10.0% of photoinitiator.
The prepolymer is selected from hexa-functional group pure carbon main chain polyurethane methacrylate prepolymer, the epoxy resin is a bifunctional modified epoxy acrylate oligomer, and the selected epoxy oligomer has the characteristics of low viscosity, good yellowing resistance and weather resistance, high curing speed and the like; the active monomer is selected from acrylate phosphate ester monomers; the auxiliary agent is selected from a mixture of low-molecular acrylic acid and tetrahydrofuran; the photoinitiator compound composition is a compound composition of a free radical photoinitiator and a cationic initiator and polyether amine.
2. The delayed curing UV glue for bonding optical glass and aluminum sheet as claimed in claim 1, wherein the prepolymer is selected from hexafunctional pure carbon backbone polyurethane methacrylate prepolymer, and the prepolymer is 30-70% by weight of the UV glue, and has a weight average molecular weight of 35000-55000.
3. The UV-curable adhesive for bonding optical glass and aluminum sheets according to claim 1, wherein the epoxy resin is a bifunctional modified epoxy acrylate oligomer, and the selected epoxy oligomer has the characteristics of low viscosity, good yellowing resistance and weather resistance, high curing speed and the like; to ensure good weather resistance and fast curing properties; the viscosity is between 500 and 1000cps at normal temperature, so that better dissolving and mixing performance is ensured.
4. The delayed curing UV glue for bonding optical glass and aluminum sheets as claimed in claim 1, wherein the reactive monomer is 10-35% by weight of the UV glue, and the reactive monomer is selected from acrylate phosphate.
5. The UV-curable adhesive for bonding optical glass and aluminum sheets according to claim 1, wherein the auxiliary agent is selected from a specific acrylic acid-tetrahydrofuran compound mixture in a molar ratio of 1:1, and the mass of the auxiliary agent is controlled to be not more than 1.0-3.0% of the total mass.
6. The UV delayed-curing adhesive for bonding optical glass and aluminum sheets according to claim 1, wherein the polymerization inhibitor is 0.5-2.0% by weight of the UV adhesive, and the polymerization inhibitor is selected from one or a compound of 2 of 3 polymerization inhibitors selected from hydroquinone, tert-butyl catechol and copper naphthenate.
7. The delayed curing UV adhesive for bonding optical glass and an aluminum sheet according to claim 1, wherein the photoinitiator composition is a compound composition of a free radical and cationic initiator and polyether amine, and accounts for 1.0-10.0% of the weight of the UV adhesive; and the free radical photoinitiator is selected from one of 1173 and 184, and the cationic photoinitiator is selected from one of iodonium salt and sulfonium salt, and is further mixed with polyether amine after a compound mixture is formed, so that a dark reaction system favorable for delaying curing is formed.
8. The UV-curable adhesive for bonding optical glass and aluminum sheets according to claim 1, wherein the prepolymer, the epoxy resin, the reactive monomer, the auxiliary agent, the polymerization inhibitor and the photoinitiator compound according to claims 2 to 7 are sequentially added into a three-dimensional mixer, the temperature is maintained at not higher than 80 ℃, the mixture is dispersed and mixed for 20 minutes at a rotation speed of 500 rpm, and then the mixture is filtered by a 15-micron filter screen to complete the preparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111435349.4A CN114350303A (en) | 2021-11-29 | 2021-11-29 | Delayed curing UV (ultraviolet) adhesive for bonding optical glass and aluminum sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111435349.4A CN114350303A (en) | 2021-11-29 | 2021-11-29 | Delayed curing UV (ultraviolet) adhesive for bonding optical glass and aluminum sheet |
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| Publication Number | Publication Date |
|---|---|
| CN114350303A true CN114350303A (en) | 2022-04-15 |
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| CN202111435349.4A Pending CN114350303A (en) | 2021-11-29 | 2021-11-29 | Delayed curing UV (ultraviolet) adhesive for bonding optical glass and aluminum sheet |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111378412A (en) * | 2019-11-04 | 2020-07-07 | 塔威新材料科技(上海)有限公司 | Light-cured adhesive composition for shading and edge sealing of display module and preparation method thereof |
| CN113265217A (en) * | 2021-06-17 | 2021-08-17 | 浙江国能科技有限公司 | Delayed curing UV (ultraviolet) adhesive and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111378412A (en) * | 2019-11-04 | 2020-07-07 | 塔威新材料科技(上海)有限公司 | Light-cured adhesive composition for shading and edge sealing of display module and preparation method thereof |
| CN113265217A (en) * | 2021-06-17 | 2021-08-17 | 浙江国能科技有限公司 | Delayed curing UV (ultraviolet) adhesive and preparation method thereof |
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