CN112795368A - UV type organic silicon adhesive, organic silicon OCA, and preparation method and application thereof - Google Patents
UV type organic silicon adhesive, organic silicon OCA, and preparation method and application thereof Download PDFInfo
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- CN112795368A CN112795368A CN202011611687.4A CN202011611687A CN112795368A CN 112795368 A CN112795368 A CN 112795368A CN 202011611687 A CN202011611687 A CN 202011611687A CN 112795368 A CN112795368 A CN 112795368A
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 72
- 239000010703 silicon Substances 0.000 title claims abstract description 72
- 239000000853 adhesive Substances 0.000 title claims abstract description 52
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 229920002050 silicone resin Polymers 0.000 claims abstract description 53
- 239000001257 hydrogen Substances 0.000 claims abstract description 50
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 50
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 48
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 47
- 229920002545 silicone oil Polymers 0.000 claims abstract description 40
- 239000003054 catalyst Substances 0.000 claims abstract description 22
- 239000012790 adhesive layer Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims description 22
- 239000011248 coating agent Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 21
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 16
- -1 amino, acryloxy, butenyloxy, methacryloxy, mercapto, methyl Chemical group 0.000 claims description 14
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 14
- 239000013464 silicone adhesive Substances 0.000 claims description 14
- 229920001296 polysiloxane Polymers 0.000 claims description 13
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 11
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims description 9
- 239000012752 auxiliary agent Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 125000000882 C2-C6 alkenyl group Chemical group 0.000 claims description 6
- 125000003601 C2-C6 alkynyl group Chemical group 0.000 claims description 5
- 125000002877 alkyl aryl group Chemical group 0.000 claims description 5
- 238000001723 curing Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000003848 UV Light-Curing Methods 0.000 claims description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 125000004191 (C1-C6) alkoxy group Chemical group 0.000 claims description 3
- 125000006716 (C1-C6) heteroalkyl group Chemical group 0.000 claims description 3
- 125000006656 (C2-C4) alkenyl group Chemical group 0.000 claims description 3
- VNQXSTWCDUXYEZ-UHFFFAOYSA-N 1,7,7-trimethylbicyclo[2.2.1]heptane-2,3-dione Chemical compound C1CC2(C)C(=O)C(=O)C1C2(C)C VNQXSTWCDUXYEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229930006711 bornane-2,3-dione Natural products 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 3
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 claims description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 150000002431 hydrogen Chemical class 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 125000004437 phosphorous atom Chemical group 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 125000001424 substituent group Chemical group 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 201000007909 oculocutaneous albinism Diseases 0.000 claims 9
- ARLJCLKHRZGWGL-UHFFFAOYSA-N ethenylsilicon Chemical compound [Si]C=C ARLJCLKHRZGWGL-UHFFFAOYSA-N 0.000 claims 5
- 238000010030 laminating Methods 0.000 abstract description 11
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 8
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 8
- 239000003292 glue Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 125000000217 alkyl group Chemical group 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 4
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- 229910018557 Si O Inorganic materials 0.000 description 3
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 3
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 3
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 3
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 2
- 239000003522 acrylic cement Substances 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 2
- 239000004305 biphenyl Substances 0.000 description 2
- GRADOOOISCPIDG-UHFFFAOYSA-N buta-1,3-diyne Chemical group [C]#CC#C GRADOOOISCPIDG-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 125000002568 propynyl group Chemical group [*]C#CC([H])([H])[H] 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 102100024452 DNA-directed RNA polymerase III subunit RPC1 Human genes 0.000 description 1
- 101000689002 Homo sapiens DNA-directed RNA polymerase III subunit RPC1 Proteins 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 229910020388 SiO1/2 Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000000304 alkynyl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- 125000000031 ethylamino group Chemical group [H]C([H])([H])C([H])([H])N([H])[*] 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000006459 hydrosilylation reaction Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 1
- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a UV type organic silicon adhesive, an organic silicon OCA (optically clear adhesive) and a preparation method and application thereof, wherein the UV type organic silicon adhesive comprises 20-70 parts by weight of vinyl silicone oil, 1-25 parts by weight of vinyl silicone resin, 15-60 parts by weight of hydrogen-containing silicone oil, 0.1-10 parts by weight of hydrogen-containing silicone resin, 0.01-15 parts by weight of an accelerator and 0.5-10 parts by weight of a tackifier; the UV type organic silicon adhesive further comprises a catalyst, and the concentration of the catalyst is 2-1000 ppm. The invention also provides the organic silicon OCA prepared from the UV type organic silicon adhesive, and the organic silicon OCA comprises a first release film, a UV type organic silicon adhesive layer and a second release film which are sequentially stacked. The UV-type organic silicon adhesive provided by the invention has high weather resistance and high organic silicon OCA (optically clear adhesive) laminating efficiency, and can greatly reduce the manpower investment and equipment investment required by laminating manufacturers.
Description
Technical Field
The invention belongs to the field of adhesives, particularly relates to a UV type organic silicon adhesive, an organic silicon OCA, a preparation method and an application thereof, and particularly relates to a UV type organic silicon adhesive with high weather resistance, an organic silicon OCA, a preparation method and an application thereof.
Background
The development of networking of the automobile promotes the iterative upgrade of the traditional display screen and the entertainment system, and multi-screen fusion and interaction are gradually realized. With the development of display technology, various display screen innovation applications, such as a head-up display, an ultra-large screen and a curved screen, integration of a display screen on a steering wheel, an electronic rearview mirror and the like, are rapidly developed. The application scenes are continuously subdivided, and the application scenes slowly permeate into semi-open or even open spaces from the original indoor spaces such as education and meetings, such as information publishing, monitoring and commanding, retail sale and the like. Along with the continuous expansion of application scenes, the requirement on the weather resistance of the jointing material is higher and higher; as the number of applications increases, the efficiency requirements also increase. The liquid glue laminating process adopted at the present stage, including a glue dispensing process, a coating process, a printing process, a glue scraping process and the like, needs to invest a large amount of manpower and equipment cost, has relatively low production efficiency, and cannot meet the follow-up increasingly large market demands.
CN104004460A discloses an organic silicon gel optical adhesive film and a production process thereof, the type adopts a two-component thermosetting organic silicon adhesive, and in the preparation of an OCA adhesive film, because two components need to be mixed, the equipment investment is large, and the thermosetting adhesive has certain service life limitation, cannot be put into production on a large scale, is easy to cause the scrapping of adhesive gel, and greatly affects the production efficiency.
CN111154430A discloses an ultraviolet curing type OCA pressure-sensitive adhesive film and a preparation method thereof, wherein the type is prepared by adopting an acrylic adhesive, and the acrylic adhesive is easy to degrade and break in the use process in many scenes and is yellow after aging because the C-C bond energy is lower than that of the Si-O bond energy of organic silicon. Cannot meet the requirement of diversified applications at present.
The existing liquid glue laminating process needs a large amount of manpower and equipment cost, the production efficiency is relatively low, and the weather resistance is poor. Therefore, how to provide the organosilicon OCA with good weather resistance and convenient use becomes a problem to be solved urgently.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a UV type organic silicon adhesive, an organic silicon OCA, a preparation method and an application thereof, and particularly provides a UV type organic silicon adhesive with high weather resistance, an organic silicon OCA, a preparation method and an application thereof. The UV-type organic silicon adhesive provided by the invention has high weather resistance and high organic silicon OCA (optically clear adhesive) laminating efficiency, and can greatly reduce the manpower investment and equipment investment required by laminating manufacturers.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a UV type organic silicon adhesive which comprises, by weight, 20-70 parts of vinyl silicone oil, 1-25 parts of vinyl silicone resin, 15-60 parts of hydrogen-containing silicone oil, 0.1-10 parts of hydrogen-containing silicone resin, 0.01-15 parts of an accelerator and 0.5-10 parts of a tackifier.
The UV type organic silicon adhesive further comprises a catalyst, and the concentration of the catalyst is 2-1000 ppm.
Wherein the vinyl silicone oil can be 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts, 60 parts, 65 parts or 70 parts, the vinyl silicone resin can be 1 part, 3 parts, 5 parts, 7 parts, 9 parts, 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts or 25 parts, the hydrogen-containing silicone oil can be 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts or 60 parts, the hydrogen-containing silicone resin can be 0.1 part, 0.2 part, 0.3 part, 0.5 part, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts, the accelerator can be 0.01 part, 0.02 part, 0.03 part, 0.05 part, 0.1 part, 2 parts, 0.5 parts, 3 parts, 9 parts or 10 parts, the tackifier can be 0.01 part, 0.02 part, 0.03 part, 0.05 part, 3 part, 3.1.1 part, 3 part, 3.1 part, 9 parts, 13 parts or 10 parts, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts, etc., and the concentration of the catalyst may be 2ppm, 5ppm, 10ppm, 20ppm, 30ppm, 50ppm, 100ppm, 150ppm, 200ppm, 250ppm, 300ppm, 350ppm, 400ppm, 450ppm, 500ppm, 550ppm, 600ppm, 650ppm, 700ppm, 750ppm, 800ppm, 850ppm, 900ppm, 950ppm or 1000ppm, etc., but is not limited to the above-listed values, and other values not listed in the above-mentioned numerical range are also applicable.
The UV type organic silicon adhesive with the specific composition ratio is high in weather resistance and high in laminating efficiency, equipment investment of Optical Clear Adhesive (OCA) manufacturers can be greatly reduced, production efficiency is improved, meanwhile, the volume shrinkage rate is low, shrinkage stress is avoided, the modulus is low, the thermal stress is small, the phenomenon of uneven color development in the laminating process can be effectively solved, and user experience is improved.
Preferably, the UV type silicone adhesive comprises, by weight, 40-50 parts of vinyl silicone oil, 10-20 parts of vinyl silicone resin, 25-45 parts of hydrogen-containing silicone oil, 3-8 parts of hydrogen-containing silicone resin, 3-10 parts of an accelerator and 3-7 parts of a tackifier.
The UV type organic silicon adhesive also comprises a catalyst, and the concentration of the catalyst is 200-700 ppm.
The specific composition ratio can further improve the weather resistance of the UV type organic silicon adhesive.
Preferably, the structure of the vinyl silicone oil is shown as formula I:
wherein a and b are independently selected from integers not less than 1; r1、R2Independently selected from C1-C4 alkyl, preferably methyl or ethyl; r3、R4Independently selected from methyl or vinyl.
Wherein a can be selected from 1, 2, 3, 4, 5, 6, 7 or 8, etc., b can be selected from 1, 2, 3, 4, 5, 6, 7 or 8, etc., C1-C4 respectively refer to structures containing one, two, three or 4 carbon atoms, and the alkyl group of C1-C4 can be any one of methyl, ethyl, propyl, isopropyl or n-butyl, but is not limited to the above-listed values or selections, and other non-listed values or selections within the above-listed values or selections are also applicable.
The vinyl silicone oil can react and crosslink with hydrogen-containing silicone oil, has excellent viscosity, has high Si-O bond energy and excellent weather resistance in the structure, has unique spatial arrangement, can adapt to wider temperature change, and meets the application requirements of different fields.
Preferably, the vinyl silicone resin comprises any one or a combination of at least two of MQ vinyl silicone resin, MT vinyl silicone resin, MDT vinyl silicone resin or MTQ vinyl silicone resin, such as a combination of MQ vinyl silicone resin and MT vinyl silicone resin, a combination of MT vinyl silicone resin and MDT vinyl silicone resin or a combination of MDT vinyl silicone resin and MTQ vinyl silicone resin, and the like, but is not limited to the combinations enumerated above, and other combinations not enumerated within the scope of the combinations listed above are also applicable.
Preferably, the hydrogen-containing silicone oil has a structure shown in formula II:
wherein c and d are independently selected from integers not less than 1; r5、R6Independently selected from C1-C4 alkyl, preferably methyl or ethyl; r7、R8Independently selected from H or methyl.
Wherein C is selected from 1, 2, 3, 4, 5, 6, 7 or 8, d is selected from 1, 2, 3, 4, 5, 6, 7 or 8, etc., alkyl of C1-C4 is selected from any one of methyl, ethyl, propyl, isopropyl or n-butyl, but not limited to the above-listed values or selections, and other values or selections not listed within the above-mentioned values or selections are also applicable.
The hydrogen-containing silicone oil has the advantages of high Si-O bond energy, excellent weather resistance and unique spatial arrangement, can adapt to wider temperature change, and meets the application requirements of different fields.
Preferably, the hydrogen-containing silicone resin includes any one or a combination of at least two of MQ hydrogen-containing silicone resin, MT hydrogen-containing silicone resin, MDT hydrogen-containing silicone resin or MTQ hydrogen-containing silicone resin, such as a combination of MQ hydrogen-containing silicone resin and MT hydrogen-containing silicone resin, a combination of MT hydrogen-containing silicone resin and MDT hydrogen-containing silicone resin, or a combination of MDT hydrogen-containing silicone resin and MTQ hydrogen-containing silicone resin, and the like, but is not limited to the above-listed combinations, and other combinations not listed in the above-mentioned combination range are also applicable.
Preferably, the catalyst comprises
Any one or a combination of at least two thereof, e.g.
The combination of,
In combination with or without
The combinations of (A) and (B) are not limited to the combinations listed above, and other combinations not listed within the above combination range are also applicable.
Wherein R is9-R31Independently selected from C1-C4 alkyl, preferably methyl or ethyl; x is selected from C1-C10 alkyl,
Any one of them; n is an integer from 1 to 10; e is selected from an integer of 0 to 5, f is selected from an integer of 1 to 5; r32Is selected from the group consisting of identical or different, cyclic or branched, saturated or unsaturated, substituted or unsubstituted C1-C30 hydrocarbon groups, and one or at least two unconnected carbon atoms are optionally replaced by O, N, S or a P atom; r33Selected from the following groups, which may be the same or different: -O-C (O) R34、-O-N＝C(R34)2、-OR34、-O-R35、-NR34-C(O)R36、-NR34R36or-O-NR34R35Any one of, wherein R34Selected from the following groups, which may be the same or different: any one of hydrogen, C1-C6 alkyl, C6-C12 aryl, C1-C6 heteroalkyl or C7-C18 alkylaryl; r35Any one of linear or branched C1-C6 alkyl, C2-C6 alkenyl or C2-C6 alkynyl; r36Is selected from any one of C1-C6 alkyl, C6-C12 aryl or C7-C18 alkaryl.
Wherein the alkyl of C1-C4 can be any one of methyl, ethyl, propyl, isopropyl or n-butyl, the alkyl of C1-C10 can be any one of methyl, ethyl, propyl, isopropyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl or n-decyl, n can be any one of 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10, e can be any one of 0, 1, 2, 3, 4 or 5, when e is 0
Si and (R) in (1)33)fDirectly connected, f can be any one of 1, 2, 3, 4 or 5, C1-C30 hydrocarbon group can be any one of vinyl, ethynyl, cyclopropyl, isopropyl, cyclobutyl, cyclopentyl 5-cyclopentadienyl, cyclobutyldienyl, cyclooctatetraenyl or cyclohexyl, C1-C6 alkyl can be any one of methyl, ethyl, propyl, isopropyl, n-butyl, n-pentyl or n-hexyl, C6-C12 aryl can be any one of phenyl, 1-naphthyl or 1-biphenyl, C1-C6 heteroalkyl can be any one of methoxy, ethoxy, methylthio, cyano, methylamino or ethylamino, C7-C18 alkylaryl can be any one of p-tolyl, p-ethylphenyl, m-tolyl, m-ethylphenyl or p-cyclohexylphenyl, C2-C6 alkenyl can be vinyl, cyclobutyl, cyclopentyl, cyclohexyl or cyclohexyl, Any one of propenyl or butadienyl, and the alkynyl group of C2-C6 may be any one of ethynyl, propynyl or butadiynyl, but not limited to the values or selections recited above, and other values or selections not recited within the above range of values or selections are equally applicable.
Preferably, the substituent of the C1-C30 hydrocarbon group is selected from any one of C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl and C6-C12 aryl, wherein the C1-C6 alkyl can be any one of methyl, ethyl, propyl, isopropyl, n-butyl, n-pentyl or n-hexyl, the C2-C6 alkenyl can be any one of vinyl, propenyl or butadienyl, the C2-C6 alkynyl can be any one of ethynyl, propynyl or butadiynyl, and the C6-C12 aryl can be any one of phenyl, 1-naphthyl or 1-biphenyl.
The catalyst can catalyze vinyl silicone oil, vinyl silicone resin, hydrogen-containing silicone oil and hydrogen-containing silicone resin to react and crosslink under UV irradiation, and has excellent viscosity.
Preferably, the accelerator comprises
Or camphorquinone, for example,
combinations of (A), camphorquinone and
in combination with or without
The combinations of (A) and (B) are not limited to the combinations listed above, and other combinations not listed within the above combination range are also applicable. Wherein R is37-R49Is selected from C1-C4 alkyl or C2-C4 alkenyl, C1-C4 alkyl can be any one of methyl, ethyl, propyl, isopropyl or n-butyl, and C2-C4 alkenyl can be any one of ethenyl, propenyl, butenyl or 1-butadienyl.
Preferably, the tackifier comprises
Any one or a combination of at least two thereof, e.g.
The combination of,
In combination with or without
The combinations of (A) and (B) are not limited to the combinations listed above, and other combinations not listed within the above combination range are also applicable. Wherein R is50-R62Any one of C1-C6 alkyl, C1-C6 alkoxy, vinyl or hydrogen; y is selected from any one of amino, acryloxy, butenyloxy, methacryloxy, mercapto, methyl, 3-glycidyl ether oxy or chlorine; g. h is independently selected from an integer from 1 to 20.
Wherein, C1-C6 alkyl methyl, ethyl, propyl, isopropyl, n-butyl, n-pentyl or n-hexyl, C1-C6 alkoxy can be any one of methoxy, ethoxy, propoxy or isopropoxy, g can be any one of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20, and h can be any one of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20.
The specific promoter has low component and small steric hindrance, contains a reactive functional group, can promote the catalyst to more rapidly catalyze the hydrosilylation reaction, and improves the viscosity of the UV type organosilicon adhesive.
Preferably, the UV-type silicone adhesive further comprises 1 to 30 parts by weight, preferably 10 to 20 parts by weight of an auxiliary agent, wherein the parts by weight of the auxiliary agent can be 1 part, 3 parts, 5 parts, 7 parts, 9 parts, 10 parts, 12 parts, 14 parts, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts or 30 parts, and the like, but is not limited to the above-listed numerical values, and other numerical values in the above numerical value range are also applicable.
Preferably, the adjuvant includes any one or a combination of at least two of methyl silicone oil, hydroxyl-terminated silicone oil, MQ hydroxyl resin, MT hydroxyl resin, MDT hydroxyl silicone resin or MTQ hydroxyl resin, such as a combination of methyl silicone oil and hydroxyl-terminated silicone oil, a combination of hydroxyl-terminated silicone oil and hydroxyl-terminated silicone oil or a combination of side hydroxyl silicone oil and MQ hydroxyl resin, etc., but is not limited to the above-listed combinations, and other combinations not listed within the above-mentioned combination range are also applicable.
In a second aspect, the present invention provides a preparation method of the UV-type silicone adhesive, which comprises the following steps: mixing and stirring vinyl silicone oil, vinyl silicone resin, hydrogen-containing silicone oil, hydrogen-containing silicone resin, an accelerant, a tackifier, a catalyst and an optional auxiliary agent, and then filtering and defoaming to obtain the UV type organic silicon adhesive.
The preparation method can be used for quickly and conveniently preparing the UV type organic silicon adhesive.
Preferably, the stirring rate is 500-.
Preferably, the stirring time is 30-300 min.
Wherein the speed can be 500rpm, 520rpm, 540rpm, 560rpm, 580rpm, 600rpm, 620rpm, 640rpm, 660rpm, 680rpm or 700rpm, etc., and the time can be 30min, 50min, 70min, 90min, 110min, 130min, 150min, 170min, 190min, 210min, 230min, 250min, 270min or 300min, etc., but is not limited to the above-listed values, and other values not listed in the above-mentioned range of values are also applicable.
Preferably, the defoaming method is standing or vacuum defoaming.
As a preferred technical scheme of the invention, the preparation method comprises the following steps: mixing vinyl silicone oil, vinyl silicone resin, hydrogen-containing silicone oil, hydrogen-containing silicone resin, an accelerant, a tackifier, a catalyst and an auxiliary agent, stirring at 500-700rpm for 30-300min, filtering, and defoaming to obtain the UV type organic silicon adhesive.
In a third aspect, the invention provides an application of the UV type silicone adhesive in preparation of silicone OCA.
In a fourth aspect, the invention provides an organic silicon OCA, which comprises a first release film, a UV type organic silicon adhesive layer and a second release film, which are sequentially stacked.
The raw material of the UV type organic silicon adhesive layer is the UV type organic silicon adhesive.
The organosilicon OCA prepared by the preparation method solves the problem that the common OCA can not be used for a long time under the limit condition; meanwhile, the using method is simple, the laminating efficiency is high, and the problems of low efficiency, inconvenience in use and large equipment investment in the two-component organic silicon adhesive preparation OCA are solved.
Preferably, the silicone OCA has a thickness of 5 to 2000 μm.
Preferably, the first release film and the second release film are independently selected from non-silicon release films or fluoride release films.
Preferably, the thicknesses of the first release film and the second release film are respectively 25-125 μm.
Preferably, the release force of the first release film is 5-60g different from that of the second release film, preferably 10-50 g.
Wherein the thickness of the silicone OCA can be 5 μm, 10 μm, 20 μm, 30 μm, 50 μm, 100 μm, 200 μm, 400 μm, 600 μm, 800 μm, 1000 μm, 1200 μm, 1400 μm, 1600 μm, 1800 μm, 2000 μm, etc., the thickness of the first release film and the second release film can be 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, 75 μm, 80 μm, 85 μm, 90 μm, 95 μm, 100 μm, 105 μm, 110 μm, 115 μm, 120 μm, or 125 μm, etc., the difference of the release force between the first release film and the second release film can be 5g, 10g, 15g, 20g, 25g, 30g, 35g, 40g, 45g, 50g, 55g, 60g, etc., but not limited to, the above-listed numerical values, and other numerical values not listed in the above numerical range are also applicable.
In a fifth aspect, the present invention provides a process for the preparation of a silicone OCA as described above, comprising the steps of: coating the UV type organic silicon adhesive on one side of a first release film, then carrying out UV curing, then pasting a second release film on one side, away from the first release film, of the UV type organic silicon adhesive, and then rolling and curing to obtain the organic silicon OCA;
or coating the UV-type organic silicon adhesive on one side of the first release film, then pasting a second release film on one side of the UV-type organic silicon adhesive, which is far away from the first release film, carrying out UV curing, and then rolling and curing to obtain the organic silicon OCA.
Preferably, the method for coating the UV-type silicone adhesive on one side of the first release film includes any one of slit coating, comma blade coating, screen coating, dimple coating, transfer coating or spray coating.
In a sixth aspect, the invention also provides the application of the silicone OCA in a lamination process.
Compared with the prior art, the invention has the following beneficial effects:
(1) the UV type organic silicon adhesive prepared by selecting the specific component ratio has higher weather resistance, can be applied to more scenes, and has longer service life; meanwhile, the equipment investment of manufacturers for preparing the optical transparent adhesive can be greatly reduced, and the production efficiency is improved; the volume shrinkage rate is low, no shrinkage stress exists, the modulus is low, the thermal stress is small, the phenomenon of uneven color development in the laminating process can be effectively solved, and the user experience is improved;
(2) the invention also provides the organic silicon OCA, and the problem that the common OCA cannot be used for a long time under the limit condition is solved by applying the UV type organic silicon adhesive provided by the invention; meanwhile, the using method is simple, the laminating efficiency is high, and the problems of low efficiency, inconvenience in use and large equipment investment in the two-component organic silicon adhesive preparation OCA are solved.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following further describes the technical solution of the present invention with reference to the preferred embodiments of the present invention, but the present invention is not limited to the scope of the embodiments.
The starting materials for the following examples and comparative examples and the sources of the equipment used are as follows:
(A) vinyl silicone oil
(B) Vinyl silicone resin
| (Code) | Suppliers of goods | Model number | Viscosity (mPa. s) | Vinyl content (mmol/g) |
| B1 | Deerta organosilicon | DT-2750 | 7000 | 0.49 |
| B2 | Gelest,Inc. | VQM-135 | 6000 | 0.32 |
(C) Hydrogen-containing silicone oil
(D) Hydrogen-containing silicon resin
The general structural formula is as follows: (HMe)2SiO1/2)x(HMeSiO2/2)y(MeSiO3/2)zWherein Me is methyl.
(E) Catalyst and process for preparing same
| (Code) | Suppliers of goods | Model number |
| E1 | Deerta organosilicon | YF100515 |
| E2 | Alfa Aesar | A00020 |
| E3 | Aladdin reagent | K131673 |
(F) Accelerator
| (Code) | Manufacturer(s) | Number plate | Viscosity (mPa. s) |
| F1 | Gelest,Inc. | R710643 | 20 |
| F2 | Gelest,Inc. | R433148 | 100 |
(G) Other auxiliaries
| (Code) | Suppliers of goods | Number plate | Viscosity (mPa. s) |
| G1 | Gelest,Inc. | R668514 | 300 |
| G2 | Gelest,Inc. | R156642 | 20000 |
(H) Tackifier
| (Code) | Manufacturer(s) | Number plate | Name (R) |
| H1 | Aladdin reagent | T103647 | Vinyl triethoxy silane |
Coating apparatus
| (Code) | Manufacturer(s) | Number plate | Gluing method |
| Coating machine | ShangWang printing machinery Co Ltd | THVG-1100 | Dimple coating |
Examples 1-8 and comparative examples 1-5 respectively provide a UV type silicone adhesive, and the following specific components (in parts by weight) are provided in each example and comparative example:
| serial number | Composition of | Example 5 | Example 6 | Example 7 | Example 8 |
| A | Vinyl silicone oil | A170 parts | A220 parts | A350 parts | A140 parts |
| B | Vinyl silicone resin | B11 parts | B125 parts | B210 portion | B220 portion |
| C | Hydrogen-containing silicone oil | C160 parts | C115 parts | C245 part | C225 parts |
| D | Hydrogen-containing silicon resin | D10.1 parts | D110 parts | D23 parts | D28 parts |
| E | Catalyst and process for preparing same | E1 2ppm | E2 1000ppm | E1 200ppm | E2 700ppm |
| F | Accelerator | F10.01 parts | F110 parts | F23 parts | F210 parts |
| G | Auxiliary agent | G130 parts | G21 parts | G120 parts | G27 parts |
| H | Tackifier | H110 portion | H10.5 parts | H17 parts | H13 parts |
The preparation method comprises the following steps: and mixing all the raw materials, stirring at 600rpm for 240min, filtering, standing and defoaming to obtain the UV type organic silicon adhesive.
And (3) sample testing:
the test criteria are as follows:
Δ E determination criterion: judging the product to be OK when the product is less than or equal to 2, otherwise, judging the product to be NG; standard for determining the lamination appearance: no bubble, no perforation, no falling, no glue failure, no yellowing, no liquefaction, no color unevenness of lighting is OK, otherwise NG.
The UV-type silicone adhesives provided in examples 1-8 and comparative examples 1-5 were tested and the results were as follows:
from the data, in the preferable proportioning range and the catalyst selection range, the product provided by the invention has better viscosity, temperature change resistance and radiation resistance, embodies more excellent weather resistance, has better fit appearance and effectively improves the user experience.
The applicant states that the present invention is illustrated by the above examples of the UV-type silicone adhesive, silicone OCA, and preparation method and application thereof, but the present invention is not limited to the above examples, i.e. it does not mean that the present invention must be implemented by relying on the above examples. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
Claims (10)
1. The UV type organic silicon adhesive is characterized by comprising 20-70 parts of vinyl silicone oil, 1-25 parts of vinyl silicone resin, 15-60 parts of hydrogen-containing silicone oil, 0.1-10 parts of hydrogen-containing silicone resin, 0.01-15 parts of an accelerator and 0.5-10 parts of a tackifier in parts by weight;
the UV type organic silicon adhesive further comprises a catalyst, and the concentration of the catalyst is 2-1000 ppm.
2. The UV type silicone adhesive according to claim 1, wherein the UV type silicone adhesive comprises, by weight, 40-50 parts of vinyl silicone oil, 10-20 parts of vinyl silicone resin, 25-45 parts of hydrogen-containing silicone oil, 3-8 parts of hydrogen-containing silicone resin, 3-10 parts of an accelerator and 3-7 parts of a tackifier;
the UV type organic silicon adhesive also comprises a catalyst, and the concentration of the catalyst is 200-700 ppm;
preferably, the structure of the vinyl silicone oil is shown as formula I:
wherein a and b are independently selected from integers not less than 1; r1、R2Independently selected from C1-C4 alkyl, preferably methyl or ethyl; r3、R4Independently selected from methyl or vinyl;
preferably, the vinyl silicon resin comprises any one of or a combination of at least two of MQ vinyl silicon resin, MT vinyl silicon resin, MDT vinyl silicon resin or MTQ vinyl silicon resin;
preferably, the hydrogen-containing silicone oil has a structure shown in formula II:
wherein c and d are independently selected from integers not less than 1; r5、R6Independently selected from C1-C4 alkyl, preferably methyl or ethyl; r7、R8Independently selected from H or methyl;
preferably, the hydrogen-containing silicone resin comprises any one of or a combination of at least two of MQ hydrogen-containing silicone resin, MT hydrogen-containing silicone resin, MDT hydrogen-containing silicone resin or MTQ hydrogen-containing silicone resin;
preferably, the catalyst comprises
Any one or a combination of at least two of them;
wherein R is9-R31Independently selected from C1-C4 alkyl, preferably methyl or ethyl; x is selected from C1-C10 alkyl,
Any one of them; n is an integer from 1 to 10, e is an integer from 0 to 5, and f is an integer from 1 to 5; r32Is selected from the group consisting of identical or different, cyclic or branched, saturated or unsaturated, substituted or unsubstituted C1-C30 hydrocarbon groups, and one or at least two unconnected carbon atoms are optionally replaced by O, N, S or a P atom; r33Selected from the following groups, which may be the same or different: -O-C (O) R34、-O-N＝C(R34)2、-OR34、-O-R35、-NR34-C(O)R36、-NR34R36or-O-NR34R35Any one of, wherein R34Selected from the same orThe following groups: any one of hydrogen, C1-C6 alkyl, C6-C12 aryl, C1-C6 heteroalkyl or C7-C18 alkylaryl; r35Any one of linear or branched C1-C6 alkyl, C2-C6 alkenyl or C2-C6 alkynyl; r36Any one selected from C1-C6 alkyl, C6-C12 aryl or C7-C18 alkaryl;
preferably, the substituent of the C1-C30 hydrocarbon group is selected from any one of C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl and C6-C12 aryl;
preferably, the accelerator comprises
Or camphorquinone, wherein R is selected from the group consisting of37-R49Selected from C1-C4 alkyl or C2-C4 alkenyl;
preferably, the tackifier comprises
Any one or a combination of at least two of them, wherein R50-R62Any one of C1-C6 alkyl, C1-C6 alkoxy, vinyl or hydrogen; y is selected from any one of amino, acryloxy, butenyloxy, methacryloxy, mercapto, methyl, 3-glycidyl ether oxy or chlorine; g. h is independently selected from an integer from 1 to 20;
preferably, the UV type organic silicon adhesive further comprises 1-30 parts of an auxiliary agent, preferably 10-20 parts;
preferably, the auxiliary agent comprises any one of methyl silicone oil, hydroxyl-terminated silicone oil, MQ hydroxyl resin, MT hydroxyl resin, MDT hydroxyl silicone resin or MTQ hydroxyl resin or the combination of at least two of the methyl silicone oil, the hydroxyl-terminated silicone oil, the MQ hydroxyl resin, the MT hydroxyl resin, the MDT hydroxyl silicone.
3. A method for preparing the UV-type silicone adhesive according to claim 1 or 2, characterized by comprising the steps of: mixing and stirring vinyl silicone oil, vinyl silicone resin, hydrogen-containing silicone oil, hydrogen-containing silicone resin, an accelerant, a tackifier, a catalyst and an optional auxiliary agent, and then filtering and defoaming to obtain the UV type organic silicon adhesive.
4. The method for preparing the UV type silicone adhesive according to claim 3, wherein the stirring speed is 500-700 rpm;
preferably, the stirring time is 30-300 min;
preferably, the defoaming method is standing or vacuum defoaming;
preferably, the preparation method comprises the following steps: mixing vinyl silicone oil, vinyl silicone resin, hydrogen-containing silicone oil, hydrogen-containing silicone resin, an accelerant, a tackifier, a catalyst and an auxiliary agent, stirring at 500-700rpm for 30-300min, filtering, and defoaming to obtain the UV type organic silicon adhesive.
5. Use of the UV-type silicone adhesive according to claim 1 or 2 in the preparation of silicone OCAs.
6. The organic silicon OCA is characterized by comprising a first release film, a UV type organic silicon adhesive layer and a second release film which are sequentially stacked;
the UV type organic silicon adhesive is characterized in that the raw material of the UV type organic silicon adhesive layer is the UV type organic silicon adhesive in claim 1 or 2.
7. The silicone OCA of claim 6, characterized in that the thickness of the silicone OCA is 5-2000 μ ι η;
preferably, the first release film and the second release film are independently selected from non-silicon release films or fluoride release films;
preferably, the thicknesses of the first release film and the second release film are respectively 25-125 μm;
preferably, the release force of the first release film is 5-60g different from that of the second release film, preferably 10-50 g.
8. A process for the preparation of a silicone OCA according to claim 6 or 7, characterized in that it comprises the following steps: coating the UV type organic silicon adhesive as described in claim 1 or 2 on one side of a first release film, then carrying out UV curing, then coating a second release film on one side of the UV type organic silicon adhesive, which is far away from the first release film, rolling and curing to obtain the organic silicon OCA;
or coating the UV type organic silicon adhesive as described in claim 1 or 2 on one side of a first release film, then coating a second release film on one side of the UV type organic silicon adhesive, which is far away from the first release film, carrying out UV curing, and then rolling and curing to obtain the organic silicon OCA.
9. The method for preparing the silicone OCA according to claim 8, wherein the manner of coating the UV-type silicone adhesive according to claim 1 or 2 on one side of the first release film comprises any one of slot coating, comma blade coating, screen coating, dimple coating, transfer coating or spray coating.
10. Use of the silicone OCA of claim 6 or 7 in a lamination process.
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Application publication date: 20210514 |