CN110684475A - Novel UV cross-linking cured multilayer optical adhesive film and application thereof - Google Patents
Novel UV cross-linking cured multilayer optical adhesive film and application thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/26—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers modified by chemical after-treatment
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
- C09J2423/045—Presence of homo or copolymers of ethene in the release coating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
- C09J2423/046—Presence of homo or copolymers of ethene in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/10—Presence of homo or copolymers of propene
- C09J2423/105—Presence of homo or copolymers of propene in the release coating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/005—Presence of polyester in the release coating
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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention relates to a novel UV cross-linking cured multilayer optical adhesive film which sequentially comprises a first release layer, a first adhesive layer, a non-adhesive layer, a second adhesive layer and a second release layer, wherein the first adhesive layer and the second adhesive layer are acrylate adhesive layers, the non-adhesive layer is an ethylene vinyl acetate copolymer layer, and the adhesive film is subjected to UV curing. The invention also provides an application of the novel UV cross-linking cured multilayer optical adhesive film. By adopting the novel UV cross-linking cured multilayer optical adhesive film and the application thereof, after UV curing, the bent and creased adhesive layer is not easy to break, has good space ductility, and avoids the phenomena of adhesive overflow and difficult deaeration in the bonding process of LOCA optical adhesive; the die cutting process does not cause wire drawing, and the adaptability to the size of a fit screen is wide; the production cost is low, the processing is easy, the solid content is 100%, the energy is saved, the environment is protected, the defoaming is easy in the processing and using process, glue does not overflow, the applicability is wide, and the laminating yield is improved.
Description
Technical Field
The invention relates to the technical field of electronic display screens, in particular to an optical adhesive film, and specifically relates to a novel UV cross-linked and cured multilayer optical adhesive film and application thereof.
Background
In recent years, electronic products such as mobile phone panels and the like are rapidly updated, and electronic display screens such as touch screens and liquid crystal screens are rapidly developed. The bonding method between the touch screen and the corresponding components is the conventional LOCA and OCA full lamination. Although the conventional LOCA adhesive is relatively good in filling property, the processing property is not excellent enough, defoaming is difficult, and an adhesive overflow phenomenon is easy to occur. The OCA optical cement is a mainstream product in the market at present, but the OCA optical cement has the advantages of high production cost, high laminating requirement, low yield and narrow application range, and is only suitable for laminating small-size screens.
Therefore, an optical adhesive film with low cost, easy processing and wide applicability is needed to replace the existing LOCA and OCA optical adhesives.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a novel UV cross-linking cured multilayer optical adhesive film which is low in production cost, easy to process, wide in applicability, capable of avoiding the adhesive overflow phenomenon in the LOCA laminating process and improving the laminating yield and application thereof.
In order to achieve the above object, the novel UV cross-linking cured multilayer optical adhesive film of the present invention and its application are as follows:
the adhesive film comprises a first release layer, a first adhesive layer, a non-adhesive layer, a second adhesive layer and a second release layer in sequence, wherein the first adhesive layer and the second adhesive layer are acrylate adhesive layers, the non-adhesive layer is an ethylene vinyl acetate copolymer layer, and the adhesive film is cured by UV.
Preferably, the peeling strength between the first adhesive layer or the second adhesive layer and the ITO is more than or equal to 5N/mm; the peel strength of the first adhesive layer or the second adhesive layer and the ethylene-vinyl acetate copolymer layer is more than or equal to 10N/mm.
Preferably, the thickness of the first adhesive layer or the second adhesive layer is 5 to 25 μm, and the thickness of the non-adhesive layer is 30 to 300 μm.
Preferably, the acrylate is polyurethane acrylate, polyester acrylate or polyolefin acrylate.
Preferably, the acrylic adhesive layer comprises the following raw materials in parts by mass: 50-100 parts of acrylate oligomer, 0.1-45 parts of reactive acrylate monomer, 0.5-10 parts of photoinitiator, 0.1-3 parts of antioxidant and 0.1-3 parts of light stabilizer;
the ethylene-vinyl acetate copolymer layer comprises the following raw materials in parts by mass: 50-99 parts of EVA, 0.1-45 parts of polybutene, 0.1-10 parts of photoinitiator, 0.1-3 parts of antioxidant and 0.1-3 parts of light stabilizer.
Preferably, the reactive acrylate monomer is one or a combination of several of isobornyl methacrylate, tetrahydrofuran acrylate, tetrahydrofuran methacrylate, dodecyl methacrylate, isooctyl acrylate, isodecyl acrylate, isobornyl acrylate, dodecyl acrylate, trimethylolpropane formal acrylate, 4-hydroxybutyl acrylate, polyethylene glycol dimethacrylate, tricyclodecane dimethanol diacrylate, trimethylolpropane trimethacrylate, trimethylolpropane triacrylate and pentaerythritol triacrylate.
Preferably, the photoinitiator is one or a combination of more of alpha, alpha-diethoxyacetophenone, 2-hydroxy-2 methyl-1-phenyl acetone, 2-hydroxy-2-methyl-1-p-hydroxyethyl ether phenyl acetone, 1-hydroxycyclohexyl phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, phenyl bis (2,4, 6-trimethylbenzoyl) phosphorus oxide, thioxanthone and derivatives thereof, anthraquinone and derivatives thereof and co-initiator active amines; the antioxidant is one or the combination of two of hindered phenol antioxidant and phosphite antioxidant; the light stabilizer is a hindered amine light stabilizer.
Preferably, the VA content of the EVA used in the ethylene-vinyl acetate copolymer layer is between 24 and 33 percent.
Preferably, the first release layer and the second release layer are one or a combination of PET, PE and PP; the release force of one of the first release layer or the second release layer is 10-20 g, and the release force of the other of the first release layer or the second release layer is 30-40 g.
The invention also provides application of the novel UV cross-linking cured multilayer optical adhesive film, and the adhesive film is used for bonding the electronic display screen with a corresponding component.
By adopting the novel UV cross-linking cured multilayer optical adhesive film and the application thereof, after UV curing, compared with the traditional OCA and LOCA optical adhesives, the novel UV cross-linking cured multilayer optical adhesive film has a more stable spatial structure, the bent and creased adhesive layer is not easy to break, and the novel UV cross-linking cured multilayer optical adhesive film has good spatial ductility, and avoids the phenomena of adhesive overflow and defoaming in the LOCA optical adhesive bonding process; the die cutting process does not cause wire drawing, has wide adaptability to the size of a fit screen, and can well replace the conventional OCA optical cement and LOCA cement; the production cost is low, the processing is easy, the solid content is 100%, the energy is saved, the environment is protected, the defoaming is easy in the processing and using process, glue does not overflow, the applicability is wide, and the laminating yield is improved.
Drawings
Fig. 1 is a schematic structural diagram of a UV cross-linking cured novel multilayer optical adhesive film of the present invention.
Reference numerals
1 first release layer
2 first adhesive layer
3 non-adhesive layer
4 second adhesive layer
5 second Release layer
Detailed Description
In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.
As shown in fig. 1, the UV cross-linking cured novel multilayer optical adhesive film of the present invention sequentially comprises a first release layer 1, a first adhesive layer 2, a non-adhesive layer 3, a second adhesive layer 4, and a second release layer 5, wherein the first adhesive layer and the second adhesive layer are acrylate adhesive layers, the non-adhesive layer is an ethylene-vinyl acetate copolymer layer, and the adhesive film is UV cured.
Example 1
The adhesive film comprises the following raw materials in parts by weight:
the non-adhesive layer comprises 90 parts of EVA (ethylene vinyl acetate copolymer) (melt index is 24), 10 parts of polybutene, 0.1 part of photoinitiator 1-hydroxycyclohexyl phenyl ketone, 0.2 part of antioxidant 168 and 0.1 part of light stabilizer 770;
the thickness of the first adhesive layer and the second adhesive layer are both 10 micrometers, the components are the same, 60 parts of polyurethane acrylate, 20 parts of isooctyl acrylate, 15 parts of isobornyl methacrylate, 4 parts of 1-hydroxycyclohexyl phenyl ketone, 1 part of phenyl bis (2,4, 6-trimethyl benzoyl) phosphorus oxide, 0.2 part of antioxidant 168 and 0.1 part of light stabilizer 770;
the first release layer and the second release layer are respectively PET films with release force of 10g and 30 g.
And (5) carrying out UV curing on the prepared adhesive film.
The prepared adhesive film has the advantages of light transmittance of over 90 percent, easy deaeration in the laminating process and excellent bonding performance with glass, PET and ITO.
Example 2
The adhesive film comprises the following raw materials in parts by weight:
the non-adhesive layer comprises 80 parts of EVA (ethylene-vinyl acetate copolymer) resin, 20 parts of polybutylene, 0.5 part of benzoyl formate photoinitiator, 0.1 part of antioxidant 1010 and 0.2 part of light stabilizer 571;
the thickness of the first adhesive layer and the second adhesive layer is 15 micrometers, the components are the same, 75 parts of polyolefin acrylate, 5 parts of 4-hydroxybutyl acrylate, 15 parts of isobornyl acrylate, 5 parts of benzoyl formate photoinitiator, 0.1 part of antioxidant 1010 and 0.2 part of light stabilizer 571;
the first release layer is a PET film with the thickness of 35 mu m, the release force is 15g, the second release layer is a PE film with the thickness of 35 mu m, and the release force is 40 g.
And (5) carrying out UV curing on the prepared adhesive film.
The prepared adhesive film has the advantages of light transmittance of over 90 percent, easy deaeration in the laminating process and excellent bonding performance with glass, PET and ITO.
Example 3
The adhesive film comprises the following raw materials in parts by weight:
the non-adhesive layer comprises 80 parts of EVA (ethylene vinyl acetate copolymer) resin, 19 parts of polybutylene, 0.1 part of 1-hydroxycyclohexyl phenyl ketone, 0.1 part of phenyl bis (2,4, 6-trimethyl benzoyl) phosphorus oxide, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168 and 0.2 part of light stabilizer 571; the thickness of the first adhesive layer and the second adhesive layer is 8 microns, the components are the same, 75 parts of urethane acrylate, 10 parts of isobornyl methacrylate, 10 parts of dodecyl acrylate, 4 parts of 1-hydroxycyclohexyl phenyl ketone, 1 part of phenyl bis (2,4, 6-trimethyl benzoyl) phosphorus oxide, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168 and 0.2 part of light stabilizer 571;
the first release layer and the second release layer are 50-micrometer PET films with release forces of 12g and 35g respectively.
And (5) carrying out UV curing on the prepared adhesive film.
The prepared adhesive film has the advantages of light transmittance of over 90 percent, easy deaeration in the laminating process and excellent bonding performance with glass, PET and ITO.
Example 4
The adhesive film comprises the following raw materials in parts by weight:
the non-adhesive layer comprises 55 parts of EVA (ethylene-vinyl acetate copolymer) (melt index 30) resin, 40 parts of polybutene, 1 part of alpha, alpha-diethoxyacetophenone, 1 part of antioxidant 1010 and 0.5 part of light stabilizer 770;
the thickness of the first adhesive layer and the second adhesive layer is 25 micrometers, the components are the same, 40 parts of polyolefin acrylate, 20 parts of polyurethane acrylate, 4 parts of alpha, alpha-diethoxyacetophenone, 20 parts of tetrahydrofuran acrylate, 10 parts of dodecyl acrylate, 2 parts of antioxidant 1010 and 2 parts of light stabilizer 770;
the first release layer is a 25-micron PP film with 10g, and the second release layer is a 50-micron PET film with the release force of 35 g.
And (5) carrying out UV curing on the prepared adhesive film.
The prepared adhesive film has the advantages of light transmittance of over 90 percent, easy deaeration in the laminating process and excellent bonding performance with glass, PET and ITO.
Example 5
The adhesive film comprises the following raw materials in parts by weight:
the non-adhesive layer comprises 65 parts of EVA (ethylene vinyl acetate copolymer) resin, 40 parts of polybutylene, 2 parts of 2-hydroxy-2-methyl-1-p-hydroxyethyl ether phenyl acetone, 2 parts of an antioxidant 168 and 1 part of a light stabilizer 571;
the thickness of the first adhesive layer and the second adhesive layer is 5 micrometers, the components are the same, 10 parts of polyester acrylate, 40 parts of polyolefin acrylate, 5 parts of trimethylolpropane triacrylate, 40 parts of isodecyl acrylate, 3 parts of 2-hydroxy-2-methyl-1-p-hydroxyethyl ether phenyl acetone, 1 part of phenyl bis (2,4, 6-trimethylbenzoyl) phosphorus oxide, 0.5 part of antioxidant 168 and 0.5 part of light stabilizer 571;
the first release layer and the second release layer are 75 μm PET films with release forces of 20g and 40g, respectively.
And (5) carrying out UV curing on the prepared adhesive film.
The prepared adhesive film has the advantages of light transmittance of over 90 percent, easy deaeration in the laminating process and excellent bonding performance with glass, PET and ITO.
By adopting the novel UV cross-linking cured multilayer optical adhesive film and the application thereof, after UV curing, compared with the traditional OCA and LOCA optical adhesives, the novel UV cross-linking cured multilayer optical adhesive film has a more stable spatial structure, the bent and creased adhesive layer is not easy to break, and the novel UV cross-linking cured multilayer optical adhesive film has good spatial ductility, and avoids the phenomena of adhesive overflow and defoaming in the LOCA optical adhesive bonding process; the die cutting process does not cause wire drawing, has wide adaptability to the size of a fit screen, and can well replace the conventional OCA optical cement and LOCA cement; the production cost is low, the processing is easy, the solid content is 100%, the energy is saved, the environment is protected, the defoaming is easy in the processing and using process, glue does not overflow, the applicability is wide, and the laminating yield is improved.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (10)
1. The utility model provides a novel multilayer optical glue membrane of UV cross-linking solidification which characterized in that, the glued membrane include in proper order that first from type layer, first adhesive layer, non-adhesive layer, second from type layer, first adhesive layer and second adhesive layer be the acrylic ester glue film, non-adhesive layer be ethylene vinyl acetate copolymer layer, the glued membrane through UV solidification.
2. The UV cross-linking cured novel multilayer optical adhesive film according to claim 1, wherein the peel strength between the first adhesive layer or the second adhesive layer and ITO is not less than 5N/mm; the peel strength of the first adhesive layer or the second adhesive layer and the ethylene-vinyl acetate copolymer layer is more than or equal to 10N/mm.
3. The UV crosslinked and cured multilayer optical film as claimed in claim 1, wherein the thickness of the first or second adhesive layer is 5-25 μm, and the thickness of the non-adhesive layer is 30-300 μm.
4. The UV-crosslinked and cured multilayer optical film as claimed in claim 1, wherein the acrylate is urethane acrylate, polyester acrylate or polyolefin acrylate.
5. The UV cross-linking cured novel multilayer optical adhesive film according to claim 1 or 4, wherein the acrylate adhesive layer comprises the following raw materials in parts by mass: 50-100 parts of acrylate oligomer, 0.1-45 parts of reactive acrylate monomer, 0.5-10 parts of photoinitiator, 0.1-3 parts of antioxidant and 0.1-3 parts of light stabilizer;
the ethylene-vinyl acetate copolymer layer comprises the following raw materials in parts by mass: 50-99 parts of EVA, 0.1-45 parts of polybutene, 0.1-10 parts of photoinitiator, 0.1-3 parts of antioxidant and 0.1-3 parts of light stabilizer.
6. The UV cross-linking curable novel multilayer optical film according to claim 5, wherein the reactive acrylate monomer is one or more of isobornyl methacrylate, tetrahydrofuran acrylate, tetrahydrofuran methacrylate, dodecyl methacrylate, isooctyl acrylate, isodecyl acrylate, isobornyl acrylate, dodecyl acrylate, trimethylolpropane formal acrylate, 4-hydroxybutyl acrylate, polyethylene glycol dimethacrylate, tricyclodecane dimethanol diacrylate, trimethylolpropane trimethacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate.
7. The UV cross-linking curable multilayer optical film according to claim 5, wherein the photoinitiator is one or more of α, α -diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropanone, 2-hydroxy-2-methyl-1-p-hydroxyethyl etherylphenylacetone, 1-hydroxycyclohexyl phenyl ketone, 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide, phenylbis (2,4, 6-trimethylbenzoyl) phosphorus oxide, thioxanthone and its derivatives, anthraquinone and its derivatives, and co-initiator active amines; the antioxidant is one or the combination of two of hindered phenol antioxidant and phosphite antioxidant; the light stabilizer is a hindered amine light stabilizer.
8. The UV-crosslinked and cured multilayer optical film as claimed in claim 1, wherein the EVA used in the ethylene-vinyl acetate copolymer layer has a VA content of 24-33%.
9. The UV cross-linking cured novel multilayer optical adhesive film according to claim 1, wherein the first release layer and the second release layer are one or a combination of PET, PE and PP; the release force of one of the first release layer or the second release layer is 10-20 g, and the release force of the other of the first release layer or the second release layer is 30-40 g.
10. Use of a novel UV cross-linking cured multilayer optical film according to any one of claims 1 to 9 for bonding an electronic display to a corresponding component.
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| CN201810723653.0A CN110684475A (en) | 2018-07-04 | 2018-07-04 | Novel UV cross-linking cured multilayer optical adhesive film and application thereof |
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| CN201810723653.0A CN110684475A (en) | 2018-07-04 | 2018-07-04 | Novel UV cross-linking cured multilayer optical adhesive film and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113214743A (en) * | 2021-04-07 | 2021-08-06 | 深圳市高仁电子新材料有限公司 | Optical adhesive for attaching touch display screen and preparation method thereof |
| CN115785875A (en) * | 2022-12-26 | 2023-03-14 | 广州鹿山新材料股份有限公司 | Optical hot melt adhesive film and preparation method and application thereof |
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2018
- 2018-07-04 CN CN201810723653.0A patent/CN110684475A/en not_active Withdrawn
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|---|---|---|---|---|
| CN101649165A (en) * | 2009-08-31 | 2010-02-17 | 广东达美胶粘制品有限公司 | Ultraviolet curing pressure sensitive adhersive for polyethylene protective film and preparation method thereof |
| CN103804774A (en) * | 2014-02-24 | 2014-05-21 | 上海海优威电子技术有限公司 | Radiation pre-crosslinked ethylene-vinyl acetate (EVA) resin film and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113214743A (en) * | 2021-04-07 | 2021-08-06 | 深圳市高仁电子新材料有限公司 | Optical adhesive for attaching touch display screen and preparation method thereof |
| CN115785875A (en) * | 2022-12-26 | 2023-03-14 | 广州鹿山新材料股份有限公司 | Optical hot melt adhesive film and preparation method and application thereof |
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