CN113025229A - Heat-curable adhesive film - Google Patents
Heat-curable adhesive film Download PDFInfo
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- CN113025229A CN113025229A CN202110382884.1A CN202110382884A CN113025229A CN 113025229 A CN113025229 A CN 113025229A CN 202110382884 A CN202110382884 A CN 202110382884A CN 113025229 A CN113025229 A CN 113025229A
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- film
- coating
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- copolymer
- solvent
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- 239000002313 adhesive film Substances 0.000 title claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 84
- 238000000576 coating method Methods 0.000 claims abstract description 84
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 28
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 20
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 20
- 239000002904 solvent Substances 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 7
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims abstract description 7
- 239000004593 Epoxy Substances 0.000 claims abstract description 6
- 125000003368 amide group Chemical group 0.000 claims abstract description 6
- 239000000654 additive Substances 0.000 claims abstract description 5
- 230000000996 additive effect Effects 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims abstract description 5
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 4
- 229920000642 polymer Polymers 0.000 claims abstract description 4
- 229920001577 copolymer Polymers 0.000 claims description 35
- -1 polyethylene Polymers 0.000 claims description 26
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 239000004698 Polyethylene Substances 0.000 claims description 18
- 229920001634 Copolyester Polymers 0.000 claims description 17
- 229920000573 polyethylene Polymers 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 12
- 229920006267 polyester film Polymers 0.000 claims description 9
- 229920000877 Melamine resin Polymers 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 6
- 229920002873 Polyethylenimine Polymers 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 229920003180 amino resin Polymers 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- 239000002985 plastic film Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 3
- 150000002513 isocyanates Chemical class 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 2
- 229920000178 Acrylic resin Polymers 0.000 claims description 2
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 claims description 2
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 2
- 239000002033 PVDF binder Substances 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 229920001328 Polyvinylidene chloride Polymers 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 2
- 239000003849 aromatic solvent Substances 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims description 2
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims description 2
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 229920006264 polyurethane film Polymers 0.000 claims description 2
- 239000011118 polyvinyl acetate Substances 0.000 claims description 2
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000005033 polyvinylidene chloride Substances 0.000 claims description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 229920002050 silicone resin Polymers 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims 1
- 125000005395 methacrylic acid group Chemical group 0.000 claims 1
- 238000004132 cross linking Methods 0.000 abstract description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 33
- 239000010410 layer Substances 0.000 description 28
- 230000009477 glass transition Effects 0.000 description 21
- 239000003973 paint Substances 0.000 description 20
- 239000002253 acid Substances 0.000 description 15
- 239000003292 glue Substances 0.000 description 11
- 239000002994 raw material Substances 0.000 description 11
- 239000007787 solid Substances 0.000 description 11
- 239000011521 glass Substances 0.000 description 10
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 8
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 239000004640 Melamine resin Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000004831 Hot glue Substances 0.000 description 5
- 238000007774 anilox coating Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000010030 laminating Methods 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229920001187 thermosetting polymer Polymers 0.000 description 4
- 210000002469 basement membrane Anatomy 0.000 description 3
- 125000001841 imino group Chemical group [H]N=* 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- JHRDMNILWGIFBI-UHFFFAOYSA-N 6-diazenyl-1,3,5-triazine-2,4-diamine Chemical compound NC1=NC(N)=NC(N=N)=N1 JHRDMNILWGIFBI-UHFFFAOYSA-N 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DICULBYFSUXYAH-UHFFFAOYSA-N 2-hydroxyethyl 2-methylprop-2-enoate;methyl 2-methylprop-2-enoate Chemical compound COC(=O)C(C)=C.CC(=C)C(=O)OCCO DICULBYFSUXYAH-UHFFFAOYSA-N 0.000 description 1
- NFHZZQPFZOEKKL-UHFFFAOYSA-N 6-diazenyl-2-N-methyl-1,3,5-triazine-2,4-diamine Chemical class N=NC1=NC(=NC(=N1)N)NC NFHZZQPFZOEKKL-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007719 peel strength test Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000003860 storage 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
- 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
- C09J7/35—Heat-activated
-
- 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
- C09J11/08—Macromolecular additives
-
- 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
- C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
-
- 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
-
- 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
-
- 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
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/16—Metal
- C09J2400/163—Metal in the substrate
-
- 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
-
- 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
- C09J2469/00—Presence of polycarbonate
-
- 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
- C09J2475/00—Presence of polyurethane
- C09J2475/006—Presence of polyurethane in the substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a heat-curable adhesive film, which is prepared by coating a coating on a substrate at one time or in a multi-layer overlapping manner, and drying to form a coating; the coating comprises the following components in percentage by mass; 10-45% of resin, 0-10% of additive and the balance of solvent; the resin has at least one active group with hydroxyl, carboxyl, amido, amino, epoxy or alkoxy; or at least one active group which can react with hydroxyl, carboxyl, amido, amino or epoxy at high temperature; or at least one polymer or oligomer with more than one branch. The heat-curable film has a transparent coating which can be thermally laminated and cured by crosslinking, and the coating has the advantages of easy operation, long operation time and uniform coating.
Description
Technical Field
The invention relates to the technical field of packaging material packaging, in particular to a heat-curable adhesive film.
Background
With the development of socio-economic, the electric appliance and home decoration industry has more and more demands for transparent color panels. These colored panels, a part of which is realized by printing a color pattern on the panel; and most are achieved by applying a film to the panel.
The film pasted on the panel has a layer of adhesive to bond the film printed with patterns and the panel, and currently, non-setting adhesive, hot melt adhesive and A/B adhesive are mainly used. For products with short service time, adhesive sticker is usually used; the requirement on the appearance of the film is not high, and hot melt adhesive is generally used; and for products with long service life, such as refrigerator panels, mobile phone back covers and the like, A/B glue is generally adopted for bonding. Because the A/B glue is troublesome to use, the A component and the B component can be mixed before use, and the operation time is short; in addition, the viscosity of the A/B glue is high, and poor curing is caused due to uneven mixing.
The Chinese patent with publication number CN107216820A discloses a thermosetting optical transparent hot melt adhesive film and a preparation and bonding method thereof, and the raw materials and the corresponding components are as follows: thermoplastic acrylate elastomer: 10-95 parts; acrylate reactive diluents: 0-20 parts of a solvent; free radical initiator: 0 to 5 parts. The thermosetting optical transparent hot melt adhesive film is a solid adhesive film without viscosity at normal temperature and has fluidity in a heated state, but the thermosetting optical transparent hot melt adhesive film adopts a thermoplastic acrylate elastomer and is still complicated to operate in the manufacturing process.
Therefore, it is a technical problem to be solved by those skilled in the art to develop a coating and a film which can be stored at room temperature, can be thermally laminated, and can be handled for a long time.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a heat-curable adhesive film, which is provided with a transparent coating capable of being thermally bonded and cured by crosslinking, and the coating of the coating is easy to operate, long in operable time and uniform in coating.
In order to achieve the purpose, the invention provides the following technical scheme:
a heat-curable film is prepared by coating a coating on a substrate in one step or in multiple layers, and drying to form a coating; the coating comprises the following components in percentage by mass;
10-45% of resin, 0-10% of additive and the balance of solvent;
the resin has at least one active group with hydroxyl, carboxyl, amido, amino, epoxy or alkoxy; or at least one active group which can react with hydroxyl, carboxyl, amido, amino or epoxy at high temperature; or at least one polymer or oligomer with more than one branch.
As further description of the technical scheme of the invention, the substrate is an aluminum foil or a plastic film.
As further description of the technical scheme of the invention, the plastic film comprises one of a polyester film, a polyurethane film, a polyamide film, a polyethylene film, a polypropylene film, a nylon-EVOH-PE multilayer co-extruded film, a nylon-PE multilayer co-extruded film, a PE-EVOH multilayer co-extruded film, an EVA film, a TPX film or an acrylic film.
As a further description of the technical means of the present invention, the resin includes acrylic resin, methacrylic resin, polyester, copolyester resin, polyvinyl acetate and its copolymer, polyethylene and its copolymer, polyvinyl chloride and its copolymer, polypropylene and its copolymer, chlorinated polypropylene and its copolymer, polystyrene and its copolymer, polyacrylonitrile and its copolymer, polyurethane and its copolymer, polyamide and its copolymer, polyether and its copolymer, amino resin and its copolymer, melamine-formaldehyde resin and its copolymer, polyethyleneimine and its copolymer, isocyanate resin, aziridine resin, silicone resin, modified cellulose, polyvinylidene chloride and its copolymer, polyvinylidene fluoride and its copolymer, etc.
As a further description of the technical solution of the present invention, the solvent includes at least one of an ester solvent, an alcohol solvent, a ketone solvent, an ether solvent, an aromatic solvent, or an aliphatic hydrocarbon solvent.
As further description of the technical scheme of the invention, the additive comprises the following components in percentage by mass:
0-8% of an opening agent and 0-2% of a slipping agent;
wherein the opening agent comprises at least one of silica micropowder, polyethylene wax powder or polyamide wax powder; the slipping agent is an organic silicon slipping agent.
As further description of the technical scheme of the invention, the thickness of the coating is 0.5-20 μm.
The coating is obtained by coating a coating on a base material and then drying, and the thickness of the coating is 0.5-20 μm, preferably 1.5-10 μm.
The prepared heat-curable adhesive film can be used for carrying out heat bonding on glass, and the peel strength of the adhesive film is 2-40N/15 mm.
As further description of the technical scheme of the invention, the coating comprises the following components in parts by weight: 20 parts of methyl etherified melamine resin,
60 parts of copolyester A, namely,
20 parts of copolyester B, namely,
2 parts of polyethylene wax powder serving as an opening agent,
0.5 part of organic silicon slipping agent,
250 parts of ethyl acetate, namely 250 parts of ethyl acetate,
50 parts of butyl acetate;
the glass transition temperature of the methyl etherified melamine resin is 37 ℃, the number average molecular weight is 4000, and the functionality is 3;
the glass transition temperature of the copolyester A is-38 ℃, the number average molecular weight is 36000, and the acid value is 4, 2 functionality;
the glass transition temperature of the copolyester B is 42 ℃, the number average molecular weight is 12000, and the acid value is 2, 2.
Based on the technical scheme, the invention has the following technical effects:
(1) the heat-curable adhesive film provided by the invention can be stored at normal temperature, has long time for storage and use, can avoid loss caused by curing and crosslinking after two components are mixed together, and can not cause adhesive overflow due to re-melting at high temperature; because the coating is coated in a solution coating mode, the coating is uniform and has high transparency, so that the pattern is full in color.
(2) The heat-curable adhesive film can be normally stored at normal temperature through the active groups and polymers of the optimized resin, and has no adhesion effect; after heating, the adhesive has thermosetting adhesion to the surface of the product, and has long operation time and uniform coating in adhesion and adhesion.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the specific embodiments illustrated. The invention provides a preferred embodiment. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
A heat-curable film, wherein the coating layer is composed of the following raw materials:
20g of high methyl etherified melamine resin; the glass transition temperature is 37 ℃, the number average molecular weight is 4000, the functionality is 3, and active groups are methyl etherified imino;
copolyester a60 g; the glass transition temperature is-38 ℃, the number average molecular weight is 36000, the acid value is 4, the functionality is 2, and active groups of carboxyl and hydroxyl are contained;
copolyester B20 g; the glass transition temperature is 42 ℃, the number average molecular weight is 12000, the acid value is 2, the functionality is 2, and active groups of carboxyl and hydroxyl are contained;
2g of polyethylene wax powder serving as an opening agent;
0.5g of organic silicon slipping agent;
250g of ethyl acetate;
50g of butyl acetate.
Mixing the components according to the weight parts to obtain a milky paint, wherein the solid content of the paint is about 25%, coating the milky paint on a TPU film with the thickness of 80 mu m by using a reticulate pattern roller for one time, and drying the milky paint by using an oven below 100 ℃ to obtain the TPU film-pasting base film. The coating thickness was 6g/m2。
And printing the TPU film-pasting base film on a non-gluing surface to obtain a TPU film-pasting product.
Cutting into single pieces, and thermally laminating the glass panels at the temperature of 80 ℃ for 5 minutes under the laminating pressure of 10 atmospheric pressures: then heat-treated at 90 ℃ for 30 minutes under normal pressure.
And (3) testing the peel strength: the peeling strength of the TPU film-glass reaches 20N/15 mm.
And (3) comparison test: a TPU film with the thickness of 80 mu m is coated with a sample of A/B glue with the thickness of 10 mu m, the TPU film is attached to a glass panel by the condition, and then the TPU film is cured for 48H in an oven at the temperature of 40 ℃, and the peeling strength of the TPU film-glass is 16.2N/15 mm.
Table 1 test data for TPU film of example 1
Example 2
A heat-curable film, wherein the coating layer is composed of the following raw materials:
10g of isocyanate resin, wherein the resin is closed, and the deblocking temperature of a sealing agent is 95 ℃;
30g of acrylic ester, the glass transition temperature of the acrylic ester is 46 ℃, the number average molecular weight is 15000, the acid value is 2, and the acrylic ester has active group carboxyl;
60g of copolyester, the glass transition temperature of which is 7 ℃, the number average molecular weight of which is 23000, the acid value of which is less than 2, the hydroxyl value of which is 5, and active groups of hydroxyl and carboxyl;
1g of polyethylene wax powder serving as an opening agent;
300g of ethyl acetate;
100g of butyl acetate.
Mixing the components according to the weight parts to obtain a milky paint, wherein the solid content of the paint is about 20%, coating the milky paint on an Al film with the thickness of 90 mu m by using a reticulate pattern roller for one time, and drying the Al film by using an oven below 120 ℃ to obtain the Al film-pasting base film. The coating thickness was 8g/m2。
And carrying out hot lamination on the PC sheet to obtain an Al film product. During testing, the fitting conditions are simulated: heating a heat sealing knife at the side of a covering film, attaching the covering film to a pressure of 3kgf, and pressing for 10 seconds; the film product was tested for peel strength with the following test data:
table 2 peel strength test data for Al film of example 2
Example 3
A heat-curable film wherein the coating consists of two layers of paint:
the first layer of coating consists of the following raw materials:
2g of a polyethyleneimine resin (PE-PEI resin),
49g of water is added to the reaction kettle,
49g of ethanol is added into the mixture,
the first layer of coating is transparent clear solution, and the solid content of the coating is 2 percent;
the second layer of coating consists of the following raw materials:
10g of high imino melamine resin, wherein the end group of the high imino melamine resin is methoxymethyl imino, and the functionality is 6;
40g of acrylic ester, the glass transition temperature of which is 46 ℃, the number average molecular weight of which is 15000, the acid value of which is 2, and active group carboxyl;
50g of copolyester with the glass transition temperature of 7 ℃, the number average molecular weight of 23000, the acid value of less than 2 and the hydroxyl value of 5 and active groups of hydroxyl and carboxyl;
1g of polyethylene wax powder serving as an opening agent,
425g of ethyl acetate, and 425g of ethyl acetate,
100g of butyl acetate.
Mixing the components in parts by weight to obtain the milky paint, wherein the solid content of the paint is about 16%.
Adopts a two-layer coating mode, the first layer of coating adopts an anilox roller, and the wet coating amount is 4g/m2The second layer of coating adopts an anilox roller, and the wet coating amount is 1g/m2The coating basement membrane is a biaxial stretching nylon membrane with the thickness of 25 mu m, and the coating basement membrane is dried by an oven below 100 ℃ to obtain the film pasting basement membrane. The coating sizing amount is 3g/m2The thickness of the coating was about 3 μm.
During testing, the glass is subjected to hot pressing under the simulated bonding conditions of 100 ℃, sealing pressure of 3kgf and pressing time of 15min, and the uncovering force is 20N/15 mm.
Example 4
A heat-curable film wherein the coating consists of three layers of paint:
the first layer of coating consists of the following raw materials:
10g of polyvinyl chloride-propionate copolymer, wherein the glass transition temperature of the copolymer is 47 ℃, the number average molecular weight of the copolymer is 12000, and the copolymer has active terminal hydroxyl groups;
ethyl acetate 90g
The first layer of coating is transparent clear solution, and the solid content of the coating is 10 percent;
the second layer of coating consists of the following raw materials:
10g of butylated imino methyl melamine resin, wherein the resin has active groups of imino and alkoxy, and the functionality is 4;
40g of acrylic ester, the glass transition temperature of which is 46 ℃, the number average molecular weight of which is 15000, the acid value of which is 2, carboxyl with an active group and the functionality of which is 1;
50g of copolyester, the glass transition temperature of which is 7 ℃, the number average molecular weight of which is 23000, the acid value of which is less than 2, the hydroxyl value of which is 5, active groups of carboxyl and hydroxyl, and the functionality of which is 2.1;
1g of polyethylene wax powder serving as an opening agent,
250g of ethyl acetate,
50g of butyl acetate;
the mixture is mixed according to the proportion to obtain the milky paint, and the solid content of the paint is about 25 percent.
The third layer of coating consists of the following raw materials:
5g of carboxylic acid modified amino resin, wherein the resin has active groups of imino and carboxyl, and the functionality is more than 3;
10g of a polyvinyl chloride-propionate copolymer having a glass transition temperature of 47 ℃ and a number average molecular weight of 12000, and having a carboxylic acid;
the copolyester A10g, the glass transition temperature of which is 56 ℃, the number average molecular weight of which is 15000, the acid value of which is less than 2, has active groups of carboxyl and hydroxyl, and the functionality of which is 2;
the copolyester B15g has a glass transition temperature of 7 ℃, a number average molecular weight of 23000, an acid value of less than 2, active groups of carboxyl and hydroxyl, and a functionality of 2;
10g of polyethylene wax powder serving as an opening agent;
150g of ethyl acetate;
50g of butyl acetate;
the mixture is mixed according to the proportion to obtain the milky paint, and the solid content of the paint is about 20 percent.
The method adopts a three-layer coating mode, the first layer of coating adopts an anilox roller, and the wet coating amount is 4g/m2The second layer of coating adopts an anilox roller, and the wet coating amount is 16g/m2The third layer of coating adopts an anilox roller, and the wet coating amount is 5g/m2The base film was coated with Al20, and the total coating weight of the coating was 5.3g/m2(dry), the coating thickness was about 5 μm, and Al20 was obtained as a film.
Adopt the mode of sandwich, adopt Al20 pad pasting to carry out hot laminating to the felt from top to bottom, during the test, the simulation laminating condition is: then heating at 120 ℃, pressing at 3kgf for 10min to obtain the aluminum foil sandwich plate.
The stripping force of the AL-felt is 2.5N/15mm, the Al-felt is placed in a baking oven at 200 ℃ for 30min, and the aluminum foil sandwich plate has no glue overflow condition, namely, resin does not melt and flow, and can be used as interlayer consumables for high-temperature heat treatment of electronic components.
Example 5
A heat-curable film wherein the coating consists of three layers of paint:
the first layer of coating consists of the following raw materials:
2g of a polyethyleneimine resin (PE-PEI resin),
49g of water is added to the reaction kettle,
49g of ethanol is added into the mixture,
the first layer of coating is transparent clear solution, and the solid content of the coating is 2 percent;
the second layer of coating consists of the following raw materials:
10g of amino resin, wherein the resin contains active groups of amino and has the functionality of 6;
40g of methyl methacrylate-hydroxyethyl methacrylate copolyester with the glass transition temperature of 46 ℃, the number average molecular weight of 15000 and active group hydroxyl;
50g of copolyester with the glass transition temperature of 7 ℃, the number average molecular weight of 23000, the acid value of less than 2 and the hydroxyl value of 5 and active groups of hydroxyl and carboxyl;
1g of polyethylene wax powder serving as an opening agent,
200g of ethyl acetate,
100g of butyl acetate;
the mixture is mixed according to the proportion to obtain the milky paint, and the solid content of the paint is about 25 percent.
The third layer of coating consists of the following raw materials:
20g of amino resin, the glass transition temperature of which is 37 ℃, the number average molecular weight of which is 4000, and active group amino groups;
the copolyester A60g has a glass transition temperature of-38 ℃, a number average molecular weight of 36000, an acid value of 4 and active group carboxyl;
copolyester B20g, which has a glass transition temperature of 42 ℃, a number average molecular weight of 12000, an acid value of 2, and active group carboxyl groups;
2g of polyethylene wax powder serving as an opening agent,
0.5g of organic silicon slipping agent,
250g of ethyl acetate,
50g of butyl acetate.
The mixture is mixed according to the proportion to obtain the milky paint, and the solid content of the paint is about 25 percent.
The coating base film was a transparent biaxially oriented polyester film having a thickness of 50 μm, a light transmittance of 87% and a haze of 5%.
The base film is coated by a reticulate pattern roller, two layers of first coating and second coating are firstly coated on the same surface, and then the third coating is coated on the other surface.
The wet coating weight of the first layer coating was 5g/m2The wet coating weight of the second layer coating was 20g/m2The wet coating weight of the third layer coating is 15g/m2The temperature of the oven is below 120 ℃; drying to obtain the transparent polyester film with double-sided glue coating, wherein the light transmittance is 85 percent, and the haze is 7.2 percent.
The transparent polyester film with double-sided glue is used as a core layer, a stainless steel plate and a glass plate are thermally bonded, the stainless steel surface is bonded with a double-layer glue coating surface, and the glass is bonded with a single-layer glue coating surface. Bonding conditions: heating up and down at 150 deg.C under 5kgf for 15 min.
The peel force between the stainless steel plate and the transparent polyester film was 3N/15mm, and the peel force between the glass and the transparent polyester film was 5N/15 mm.
The stainless steel plate, the transparent polyester film and the glass plate are placed in an oven at 150 ℃ and baked for 1 hour, the size is stable, the edge glue overflow problem is not found, the two sides of the transparent polyester film are completely solidified, and the glue layer does not melt and flow at high temperature.
The foregoing is illustrative and explanatory only, and is described in greater detail and detail, but is not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications are possible without departing from the inventive concept, and such obvious alternatives fall within the scope of the invention.
Claims (7)
1. The heat-curable adhesive film is characterized by being prepared by coating a coating on a substrate in one step or multiple layers and drying to form a coating; the coating comprises the following components in percentage by mass;
10-45% of resin, 0-10% of additive and the balance of solvent;
the resin has at least one active group with hydroxyl, carboxyl, amido, amino, epoxy or alkoxy; or at least one active group which can react with hydroxyl, carboxyl, amido, amino or epoxy at high temperature; or at least one polymer or oligomer with more than one branch.
2. The film of claim 1, wherein the substrate is aluminum foil or plastic film.
3. The film of claim 2, wherein the plastic film comprises one of a polyester film, a polyurethane film, a polyamide film, a polyethylene film, a polypropylene film, a nylon-EVOH-PE multilayer coextruded film, a nylon-PE multilayer coextruded film, a PE-EVOH multilayer coextruded film, an EVA film, a TPX film, or an acrylic film.
4. The patch of claim 1, wherein the resin comprises acrylic resins, acrylate resins, methacrylic resins, methacrylate resins, polyesters, copolyester resins, polyvinyl acetate and copolymers thereof, polyethylene and copolymers thereof, polyvinyl chloride and copolymers thereof, polypropylene and copolymers thereof, chlorinated polypropylene and copolymers thereof, polystyrene and copolymers thereof, polyacrylonitrile and its copolymer, polyurethane and its copolymer, polyamide and its copolymer, polyether and its copolymer, amino resin and its copolymer, melamine-formaldehyde resin and its copolymer, polyethyleneimine and its copolymer, isocyanate resin, aziridine resin, silicone resin, modified cellulose, polyvinylidene chloride and its copolymer, polyvinylidene fluoride and its copolymer, etc.
5. The patch according to claim 1, wherein the solvent comprises at least one of an ester solvent, an alcohol solvent, a ketone solvent, an ether solvent, an aromatic solvent, or an aliphatic hydrocarbon solvent.
6. The adhesive film as claimed in claim 1, wherein the additive comprises the following components in percentage by mass:
0-8% of an opening agent and 0-2% of a slipping agent;
wherein the opening agent comprises at least one of silica micropowder, polyethylene wax powder or polyamide wax powder;
the slipping agent is an organic silicon slipping agent.
7. The film according to claim 1, wherein the coating has a thickness of 0.5 to 20 μm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113621161A (en) * | 2021-08-31 | 2021-11-09 | 江苏双星彩塑新材料股份有限公司 | Online coating easy-printing type polyester film |
| CN113771152A (en) * | 2021-09-22 | 2021-12-10 | 河南佳诺威木业有限公司 | Surface control process for PB cold veneer |
| CN114250038A (en) * | 2021-12-31 | 2022-03-29 | 东莞亿帆材料科技有限公司 | Printable environment-friendly film and preparation method thereof |
| CN116640522A (en) * | 2023-05-08 | 2023-08-25 | 极天羽技术股份有限公司 | Conductive aluminum foil adhesive tape and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111548521A (en) * | 2020-05-15 | 2020-08-18 | 惠州宝柏包装有限公司 | Transparent easy-to-tear cover film thermally sealed with APET tray |
| CN111605889A (en) * | 2020-05-15 | 2020-09-01 | 惠州宝柏包装有限公司 | Aluminum foil cover film thermally sealed with APET |
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2021
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111548521A (en) * | 2020-05-15 | 2020-08-18 | 惠州宝柏包装有限公司 | Transparent easy-to-tear cover film thermally sealed with APET tray |
| CN111605889A (en) * | 2020-05-15 | 2020-09-01 | 惠州宝柏包装有限公司 | Aluminum foil cover film thermally sealed with APET |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113621161A (en) * | 2021-08-31 | 2021-11-09 | 江苏双星彩塑新材料股份有限公司 | Online coating easy-printing type polyester film |
| CN113771152A (en) * | 2021-09-22 | 2021-12-10 | 河南佳诺威木业有限公司 | Surface control process for PB cold veneer |
| CN113771152B (en) * | 2021-09-22 | 2022-07-22 | 河南佳诺威木业有限公司 | Surface control process for PB cold patch |
| CN114250038A (en) * | 2021-12-31 | 2022-03-29 | 东莞亿帆材料科技有限公司 | Printable environment-friendly film and preparation method thereof |
| CN116640522A (en) * | 2023-05-08 | 2023-08-25 | 极天羽技术股份有限公司 | Conductive aluminum foil adhesive tape and preparation method thereof |
| CN116640522B (en) * | 2023-05-08 | 2023-12-15 | 极天羽技术股份有限公司 | Conductive aluminum foil adhesive tape and preparation method thereof |
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