CN110628368A - Stretchable and removable conductive adhesive layer, conductive double-sided adhesive tape and manufacturing method of conductive double-sided adhesive tape - Google Patents
Stretchable and removable conductive adhesive layer, conductive double-sided adhesive tape and manufacturing method of conductive double-sided adhesive tape Download PDFInfo
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- CN110628368A CN110628368A CN201910868400.7A CN201910868400A CN110628368A CN 110628368 A CN110628368 A CN 110628368A CN 201910868400 A CN201910868400 A CN 201910868400A CN 110628368 A CN110628368 A CN 110628368A
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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
- 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
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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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
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
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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
- C09J7/10—Adhesives in the form of films or foils without carriers
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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
- C09J7/21—Paper; Textile fabrics
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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
- C09J7/26—Porous or cellular plastics
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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
- C09J7/28—Metal sheet
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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
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
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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
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/16—Metal
- C09J2400/163—Metal in the substrate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
Abstract
The invention relates to the technical field of adhesive tape production, in particular to a conductive adhesive layer capable of being stretched and removed, a conductive double-sided adhesive tape and a manufacturing method of the conductive double-sided adhesive tape. The double-sided adhesive tape provided by the invention comprises a conductive adhesive layer and release films respectively attached to two sides of the adhesive layer; or, the adhesive comprises a conductive substrate layer, conductive adhesive layers respectively attached to two sides of the conductive substrate layer, and release films respectively attached to the surfaces of the adhesive layers on two sides; the conductive adhesive layer includes: 40-60 parts by mass of a thermoplastic elastomer; 40-60 parts by mass of tackifying resin; 10-20 parts by mass of a softener; 0.5-5 parts by mass of an antioxidant; 10-40 parts by mass of conductive filler. The double-sided adhesive tape provided by the invention integrates excellent conductive performance, firm and reliable bonding performance and no residual adhesive removal performance, and can realize the compactness, the lightness and the thinness of electronic products by simpler structural design and lower cost of used materials.
Description
Technical Field
The invention relates to the technical field of adhesive tape production, in particular to a conductive adhesive layer capable of being stretched and removed, a conductive double-sided adhesive tape and a manufacturing method of the conductive double-sided adhesive tape.
Background
The easy-to-draw adhesive is a double-sided adhesive tape which can be removed by stretching without residual adhesive, and is widely applied to the assembly of electronic products and the fixation of parts, such as the fixation of a battery in a smart phone, the fixation of a liquid crystal display screen in a notebook computer and the like. As a double-sided adhesive tape, the easy-open adhesive can provide firm and reliable long-term adhesion, and when a fault occurs and needs to be reworked, the easy-open adhesive can be removed through lateral stretching without residual adhesive, so that parts needing to be recycled and maintained are not damaged.
In addition, during the manufacturing, production, assembly and handling of electronic products, static electricity accumulation occurs due to friction or transfer of static electricity in other charged objects into the electronic products. Therefore, it is necessary to discharge the accumulated static electricity to the metal case, otherwise the static electricity accumulated for a long time may cause static electricity damage such as generation of a screen defect, melting or evaporation of a metal wiring, change in resistance value of an element, and damage or breakdown of an oxide layer.
At present in electronic product's structural design, through introducing conductive material realization such as electrically conductive bubble cotton and switching on with the metal casing, realize firm reliable and reworkable's bonding through introducing easy drawing glue simultaneously, though can reach long-term bonding and eliminate the purpose of static simultaneously, increased structural design's complexity and improved the cost of using the material.
Disclosure of Invention
In view of the above, the present invention is directed to a conductive adhesive layer capable of being removed by stretching, a conductive double-sided tape, and a method for manufacturing the conductive double-sided tape. The double-sided adhesive tape provided by the invention can meet the requirements of high bonding strength and easiness in removal, and has excellent conductivity.
The invention provides a conductive adhesive layer capable of being stretched and removed, which comprises the following components in parts by mass:
preferably, the thermoplastic elastomer comprises one or more of a styrene block copolymer, a polyolefin block copolymer, an acrylic block copolymer, polyisobutylene, a thermoplastic polyurethane, butyl rubber, and ethylene propylene diene monomer rubber.
Preferably, the tackifying resin comprises one or more of terpene resins, rosin resins and petroleum resins.
Preferably, the softener comprises one or more of mineral oil, liquid rubber and dibasic acid ester.
Preferably, the antioxidant comprises one or more of a large-substituent phenol antioxidant, an aniline antioxidant, a sulfur compound antioxidant or a benzimidazole antioxidant.
Preferably, the conductive filler includes one or more of conductive carbon fiber, conductive polymer, conductive carbon black, metal fiber, metal powder and metal-coated powder.
Preferably, the thickness of the conductive adhesive layer is 3-1500 μm.
The invention provides a stretchable and removable conductive double-sided tape, which comprises a conductive adhesive layer and release films respectively attached to two sides of the adhesive layer;
or, the adhesive comprises a conductive substrate layer, the conductive adhesive layer and the release film, wherein the conductive adhesive layer is respectively attached to the two sides of the conductive substrate layer, and the release film is respectively attached to the surfaces of the adhesive layer on the two sides.
The invention provides a method for manufacturing a conductive double-sided tape capable of being stretched and removed, which comprises the following steps:
a) arranging the conductive adhesive layer in the technical scheme on one side of a release film, and then covering a layer of release film on the surface of the conductive adhesive layer to obtain the base material-free conductive double-sided adhesive tape capable of being stretched and removed;
or the like, or, alternatively,
b) the conductive adhesive layer is arranged on one side of the release film, and then the release films provided with the conductive adhesive layers are respectively attached to two sides of the conductive base material layer, so that the base material conductive double-sided adhesive tape capable of being stretched and removed is obtained.
The invention also provides application of the conductive double-sided tape in the technical scheme in electronic products, and the conductive double-sided tape is used for fixedly connecting parts in the electronic products and eliminating static electricity of the electronic products.
Compared with the prior art, the invention provides the conductive adhesive layer capable of being stretched and removed, the conductive double-sided tape and the manufacturing method of the conductive double-sided tape. The double-sided adhesive tape provided by the invention comprises a conductive adhesive layer and release films respectively attached to two sides of the adhesive layer; or, the adhesive comprises a conductive substrate layer, conductive adhesive layers respectively attached to two sides of the conductive substrate layer, and release films respectively attached to the surfaces of the adhesive layers on two sides; the conductive adhesive layer includes: 40-60 parts by mass of a thermoplastic elastomer; 40-60 parts by mass of tackifying resin; 10-20 parts by mass of a softener; 0.5-5 parts by mass of an antioxidant; 10-40 parts by mass of conductive filler. The invention improves the use performance of the double-sided adhesive tape by optimally designing the component composition of the adhesive layer of the double-sided adhesive tape. On the one hand, the double-sided adhesive tape has high bonding strength and strong cohesive force, can be removed through stretching at an angle of 0-90 degrees with a pasted object without adhesive residue, and meets the requirements of high bonding strength and easy removal. On the other hand, the double-sided tape has excellent conductive performance, and accumulated static electricity of electronic products can be conducted to the metal shell, so that the static electricity damage is prevented. The double-sided adhesive tape provided by the invention integrates excellent conductive performance, firm and reliable bonding performance and no residual adhesive removal performance, and realizes the compact and light design of electronic products by simpler structural design and lower material cost.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a conductive adhesive layer capable of being stretched and removed, which comprises the following components in parts by mass:
in the present invention, the conductive adhesive layer includes a thermoplastic elastomer, a tackifying resin, a softening agent, an antioxidant, and a conductive filler. Among them, the thermoplastic elastomer preferably includes one or more of a styrene block copolymer, a polyolefin block copolymer, an acrylic block copolymer, polyisobutylene, thermoplastic polyurethane, butyl rubber, and ethylene-propylene-diene monomer rubber, and more preferably a styrene block copolymer such as one or more of styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS), styrene-ethylene/butylene-styrene block copolymer (SEBS), and styrene-ethylene/propylene-styrene block copolymer (SEPS). In the present invention, the content of the thermoplastic elastomer in the adhesive layer is 40 to 60 parts by mass, and specifically may be 40 parts by mass, 41 parts by mass, 42 parts by mass, 43 parts by mass, 44 parts by mass, 45 parts by mass, 46 parts by mass, 47 parts by mass, 48 parts by mass, 49 parts by mass, 50 parts by mass, 51 parts by mass, 52 parts by mass, 53 parts by mass, 54 parts by mass, 55 parts by mass, 56 parts by mass, 57 parts by mass, 58 parts by mass, 59 parts by mass, or 60 parts by mass.
In the present invention, the tackifying resin preferably includes one or more of a terpene resin, a rosin resin and a petroleum resin, and more preferably a terpene resin. In the present invention, the content of the tackifier resin in the adhesive layer is 40 to 60 parts by mass, and specifically may be 40 parts by mass, 41 parts by mass, 42 parts by mass, 43 parts by mass, 44 parts by mass, 45 parts by mass, 46 parts by mass, 47 parts by mass, 48 parts by mass, 49 parts by mass, 50 parts by mass, 51 parts by mass, 52 parts by mass, 53 parts by mass, 54 parts by mass, 55 parts by mass, 56 parts by mass, 57 parts by mass, 58 parts by mass, 59 parts by mass, or 60 parts by mass.
In the present invention, the softener preferably includes one or more of mineral oil, liquid rubber, and dibasic acid ester. Wherein the mineral oil preferably comprises one or more of paraffinic oil, naphthenic oil and aromatic oil fat; the liquid rubber preferably comprises one or more of low molecular weight polyisobutylene, polybutene, and liquid polyisodibutene. In the present invention, the content of the softening agent in the adhesive layer is 10 to 20 parts by mass, and specifically may be 10 parts by mass, 10.5 parts by mass, 11 parts by mass, 11.5 parts by mass, 12 parts by mass, 12.5 parts by mass, 13 parts by mass, 13.5 parts by mass, 14 parts by mass, 14.5 parts by mass, 15 parts by mass, 15.5 parts by mass, 16 parts by mass, 16.5 parts by mass, 17 parts by mass, 17.5 parts by mass, 18 parts by mass, 18.5 parts by mass, 19 parts by mass, 19.5 parts by mass, or 20 parts by mass.
In the invention, the antioxidant preferably comprises one or more of a large-substituent phenolic antioxidant, an aniline antioxidant, a sulfur compound antioxidant or a benzimidazole antioxidant. In the present invention, the content of the antioxidant in the adhesive layer is 0.5 to 5 parts by mass, and specifically may be 0.5 part by mass, 1 part by mass, 1.5 parts by mass, 2 parts by mass, 2.5 parts by mass, 3 parts by mass, 3.5 parts by mass, 4 parts by mass, 4.5 parts by mass, or 5 parts by mass.
In the present invention, the conductive filler preferably includes one or more of conductive carbon fiber, conductive polymer, conductive carbon black, metal fiber, metal powder, and metal-coated powder. Wherein, the metal powder preferably comprises one or more of nickel powder, gold powder and silver powder; the metal-coated powder preferably comprises a nickel-coated carbon powder. In the present invention, the conductive filler is preferably metal powder and/or metal-coated powder in view of conductive efficiency and filling amount. In the invention, the particle size range of the conductive filler is preferably 10-500 μm, and the specific range is matched according to the thickness of the adhesive layer. In one embodiment provided by the present invention, the conductive filler is conductive carbon fiber, and the diameter of the conductive carbon fiber is preferably 50 to 100 μm, and specifically may be 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, 75 μm, 80 μm, 85 μm, 90 μm, 95 μm, or 100 μm; the length of the conductive carbon fiber is preferably 100-500 μm, and specifically can be 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm or 500 μm. In an embodiment provided by the invention, the conductive filler is metal-coated powder, and the particle size of the metal-coated powder is preferably 50-100 meshes, and specifically may be 50 meshes, 55 meshes, 60 meshes, 65 meshes, 70 meshes, 75 meshes, 80 meshes, 85 meshes, 90 meshes, 95 meshes or 100 meshes.
In the present invention, the content of the conductive filler in the adhesive layer is 10 to 40 parts by mass, and specifically may be 10 parts by mass, 11 parts by mass, 12 parts by mass, 13 parts by mass, 14 parts by mass, 15 parts by mass, 16 parts by mass, 17 parts by mass, 18 parts by mass, 19 parts by mass, 20 parts by mass, 21 parts by mass, 22 parts by mass, 23 parts by mass, 24 parts by mass, 25 parts by mass, 26 parts by mass, 27 parts by mass, 28 parts by mass, 29 parts by mass, 30 parts by mass, 31 parts by mass, 32 parts by mass, 33 parts by mass, 34 parts by mass, 35 parts by mass, 36 parts by mass, 37 parts by mass, 38 parts by mass, 39 parts by mass, or 40 parts by mass.
In the present invention, the thickness of the conductive adhesive layer is preferably 3 to 1500 μm, and more specifically, may be 10 μm, 50 μm, 150 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm, 500 μm, 600 μm, 700 μm, 800 μm, 900 μm, 1000 μm, 1100 μm, 1200 μm, 1300 μm, 1400 μm or 1500 μm.
The invention also provides a conductive double-sided tape capable of being stretched and removed, which comprises the conductive adhesive layer and release films respectively attached to two sides of the adhesive layer;
or, the adhesive comprises a conductive substrate layer, the conductive adhesive layer and the release film, wherein the conductive adhesive layer is respectively attached to the two sides of the conductive substrate layer, and the release film is respectively attached to the surfaces of the adhesive layer on the two sides.
The stretch removable conductive double-sided tape provided by the invention can be designed into a non-substrate double-sided tape or a substrate double-sided tape. The substrate-free double-sided adhesive tape comprises a conductive adhesive layer and release films respectively attached to two sides of the adhesive layer, namely a structure of 'release film/conductive adhesive layer/release film'. In the present invention, the release film attached to one side of the substrate-less double-sided tape is preferably a light release film, the release film attached to the other side of the substrate-less double-sided tape is preferably a heavy release film, and the release force ratio of the light release film to the heavy release film is preferably 1: (2-3).
In the invention, the double-sided tape with the base material comprises a conductive base material layer, conductive adhesive layers respectively attached to two sides of the conductive base material layer and release films respectively attached to the surfaces of the adhesive layers on two sides, namely a structure of 'release film/conductive adhesive layer/conductive base material layer/conductive adhesive layer/release film'. In the present invention, the conductive substrate layer preferably includes one or more of a metal foil, a conductive cloth, and a conductive foam; the metal foil includes, but is not limited to, copper foil and/or aluminum foil; the conductive cloth includes, but is not limited to, a conductive non-woven fabric and/or a conductive woven cloth. Among them, the metal foil is more preferably used as the conductive substrate because the metal foil has better extensibility and low tensile strength. In the present invention, the thickness of the conductive substrate layer is preferably 3 to 500 μm, and specifically may be 10 μm, 50 μm, 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm, or 500 μm. In the invention, the release film attached to one side of the double-sided tape with the substrate is preferably a light release film, the release film attached to the other side of the double-sided tape with the substrate is preferably a heavy release film, and the release force ratio of the light release film to the heavy release film is preferably 1: (2-3).
In the present invention, due to the limitation of the kind and particle size of the conductive filler existing on the market, after the thickness of the stretch removable conductive adhesive layer is greater than 250 μm, it is difficult to maintain the overall conductivity of the adhesive layer through the formulation of the conductive filler. Therefore, in the invention, for the stretch removable conductive double-sided adhesive tape with the thickness of more than 250 μm, the invention preferably designs the stretch removable conductive double-sided adhesive tape as a substrate double-sided adhesive tape, and the introduction of the conductive substrate layer can not only greatly increase the overall related thickness of the adhesive tape, reduce the Z-direction resistance of the adhesive tape, but also enhance the tensile strength of the adhesive tape.
The invention also provides a manufacturing method of the conductive double-sided adhesive tape capable of being stretched and removed, which comprises the following steps:
a) arranging the conductive adhesive layer in the technical scheme on one side of a release film, and then covering a layer of release film on the surface of the conductive adhesive layer to obtain the base material-free conductive double-sided adhesive tape capable of being stretched and removed;
or the like, or, alternatively,
b) the conductive adhesive layer is arranged on one side of the release film, and then the release films provided with the conductive adhesive layers are respectively attached to two sides of the conductive base material layer, so that the base material conductive double-sided adhesive tape capable of being stretched and removed is obtained.
In the preparation method provided by the invention, firstly, the conductive adhesive layer is arranged on one side of the release film, and the specific steps preferably comprise:
mixing 40-60 parts by mass of thermoplastic elastomer, 40-60 parts by mass of tackifying resin, 10-20 parts by mass of softener, 0.5-5 parts by mass of antioxidant and 10-40 parts by mass of conductive filler in a solvent to obtain a conductive glue solution; and then coating the conductive glue solution on one side of the release film, and drying to form a conductive adhesive layer.
In the preparation method provided by the invention, after the conductive adhesive layer is arranged on one side of the release film, the surface of the conductive adhesive layer is covered with a release film, and the base material-free conductive double-sided adhesive tape capable of being stretched and removed can be obtained; or the release films provided with the conductive adhesive layers are respectively attached to the two sides of the conductive base material layer, so that the base material conductive double-sided adhesive tape capable of being stretched and removed can be obtained.
The invention improves the use performance of the double-sided adhesive tape by optimally designing the component composition of the adhesive layer of the double-sided adhesive tape, particularly: the adhesive layer of the double-sided tape has conductive performance by adding the conductive filler, and simultaneously, the adhesive layer of the double-sided tape still keeps good cohesion and elongation at break even after a large amount of conductive filler is added by optimally adjusting the proportion of each component, so that the double-sided tape has the characteristic of being removable by stretching. More specifically, the stretch removable conductive double-sided tape provided by the invention has at least the following advantages:
1) the double-sided adhesive tape provided by the invention has excellent conductivity, and can transfer static electricity on the surface of an object to be bonded to a metal shell to eliminate the influence of the static electricity.
2) The double-sided adhesive tape provided by the invention has certain temperature resistance, can keep high bonding strength at a general high temperature, and can be used for fixing and connecting parts of electronic products which are easy to generate heat, such as batteries, liquid crystal display screens and the like.
3) The double-sided adhesive tape provided by the invention has high bonding strength and tensile strength, and can be used for firmly connecting and fixing objects for a long time. Meanwhile, the adhesive tape can be completely removed by stretching from the side surface at a certain angle, does not break or leave adhesive residue, and can be very conveniently recycled without causing damage.
4) The non-substrate double-sided adhesive tape provided by the invention has better elasticity and anti-seismic performance, can be used as a multifunctional material for fixed connection and anti-seismic of ultra-thin electronic product parts, and saves the space for product design.
5) The double-sided adhesive tape with the base material provided by the invention enhances the contact between the conductive adhesive and the conductive base material by virtue of the conductive effect of the conductive base material, and can further greatly reduce the resistance while ensuring the thickness.
For the sake of clarity, the following examples are given in detail.
Example 1
The embodiment provides a substrate-free double-sided tape, which comprises an adhesive layer with the thickness of 150 mu m, and a light release film and a heavy release film which are respectively positioned on the upper surface and the lower surface of the adhesive layer. Wherein, the ratio of the release force of the light release film to the release force of the heavy release film is 1: 3. the adhesive layer is prepared from the following components in parts by mass: 45 parts of styrene-butadiene-styrene block copolymer (SBS, Keteng D1152), 40 parts of terpene resin (Yasuhara Chemical, PX1250), 20 parts of naphthenic oil, 2 parts of antioxidant (BASF1076) and 10 parts of conductive carbon fiber (diameter is 70 mu m, length is 200-300 mu m).
The preparation method of the double-sided adhesive tape without the base material comprises the following steps:
1) preparing 120 parts by mass of toluene, and then adding 40 parts by mass of styrene-butadiene-styrene block copolymer (SBS) to dissolve;
2) sequentially adding 40 parts by mass of terpene resin, 20 parts by mass of naphthenic oil, 2 parts by mass of antioxidant and 10 parts by mass of conductive carbon fiber into the solution formed in the step 1), and fully dissolving and dispersing to form viscous pressure-sensitive adhesive dispersion liquid;
3) filtering the pressure-sensitive adhesive dispersion liquid obtained in the step 2), coating the filtered pressure-sensitive adhesive dispersion liquid on a heavy release film, then sending the heavy release film into an oven for drying, wherein the temperature of the oven from an inlet of the oven to an outlet of the oven is 60 ℃, 80 ℃, 100 ℃, 110 ℃ and 100 ℃, the residence time of the film layer in each temperature zone is 1min, 2min, 1min and 1min in sequence, the dry thickness of an adhesive layer formed by drying is 150 mu m, and then attaching a layer of light release film, and then curling and curing the adhesive layer.
Example 2
The embodiment provides a double-sided adhesive tape without a base material, which comprises an adhesive layer with the thickness of 200 mu m, and a light release film and a heavy release film which are respectively positioned on the upper surface and the lower surface of the adhesive layer. Wherein, the ratio of the release force of the light release film to the release force of the heavy release film is 1: 2.5. the adhesive layer is prepared from the following components in parts by mass: 50 parts of styrene-isoprene-styrene block copolymer (SIS, Keteng D1114), 45 parts of terpene-phenol resin (Keteng, TP2040), 20 parts of aromatic oil, 3 parts of antioxidant (BASF1076) and 20 parts of nickel-coated carbon powder (particle size is 70-80 meshes).
The preparation method of the double-sided adhesive tape without the base material comprises the following steps:
1) preparing 140 parts by mass of xylene, and then adding and dissolving 50 parts by mass of styrene-isoprene-styrene block copolymer (SIS);
2) sequentially adding 40 parts by mass of terpene phenol resin, 20 parts by mass of aromatic oil, 3 parts by mass of antioxidant and 20 parts by mass of nickel-coated carbon powder into the solution formed in the step 1), and fully dissolving and dispersing to form a viscous and uniform pressure-sensitive adhesive dispersion liquid;
3) filtering the pressure-sensitive adhesive dispersion liquid obtained in the step 2), coating the pressure-sensitive adhesive dispersion liquid on a heavy release film, then sending the heavy release film into an oven for drying, wherein the oven comprises a plurality of temperature regions from an inlet of the oven to an outlet of the oven, the temperature is 50 ℃, 80 ℃, 100 ℃, 110 ℃ and 100 ℃, the residence time of the film layer in each temperature region is 1min, 3min, 2min and 1min in sequence, the dry thickness of an adhesive layer formed by drying is 100 mu m, and then attaching a layer of light release film and then curling;
4) filtering the pressure-sensitive adhesive dispersion liquid obtained in the step 2), coating the pressure-sensitive adhesive dispersion liquid on a light release film, and then sending the light release film into an oven for drying, wherein the temperature of the light release film from the inlet of the oven to the outlet of the inlet of the oven is respectively 50 ℃, 80 ℃, 100 ℃, 110 ℃ and 100 ℃, the residence time of the film layer in each temperature zone is respectively 1min, 3min, 2min and 1min, and the dry thickness of an adhesive layer formed by drying is 100 mu m; removing the light release film from the adhesive layer in the step 3), attaching the light release film to the adhesive layer in the step to obtain the adhesive layer with the thickness of 200 microns, and then rolling.
Example 3
The embodiment provides a double-sided tape with a base material, which comprises an aluminum foil with the thickness of 50 micrometers, adhesive layers with the thicknesses of 200 micrometers on two sides of the aluminum foil, and a light release film and a heavy release film which are respectively positioned on the upper surface and the lower surface of the adhesive layers. Wherein, the ratio of the release force of the light release film to the release force of the heavy release film is 1: 2.5. the adhesive layer comprises the following components in parts by mass: 50 parts of styrene-isoprene-styrene block copolymer (SIS, Keteng D1114), 45 parts of terpene phenol resin, 20 parts of aromatic oil, 3 parts of antioxidant (BASF1076) and 15 parts of nickel-coated carbon powder (the particle size is 70-80 meshes).
The preparation method of the double-sided adhesive tape with the base material comprises the following steps:
1) preparing 140 parts by mass of xylene, and then adding and dissolving 50 parts by mass of styrene-isoprene-styrene block copolymer (SIS);
2) sequentially adding 40 parts by mass of terpene phenol resin, 20 parts by mass of aromatic oil, 3 parts by mass of antioxidant and 15 parts by mass of nickel-coated carbon powder into the solution formed in the step 1), and fully dissolving and dispersing to form a viscous and uniform pressure-sensitive adhesive dispersion liquid with the solid content of 50 wt%;
3) filtering the pressure-sensitive adhesive dispersion liquid obtained in the step 2), coating the pressure-sensitive adhesive dispersion liquid on a heavy release film, and then sending the heavy release film into a drying oven for drying, wherein the temperature of the drying oven from an inlet of the drying oven to an outlet of the drying oven comprises a plurality of temperature regions, the temperature of the temperature regions is 50 ℃, 80 ℃, 100 ℃, 110 ℃ and 100 ℃, the residence time of the film layer in each temperature region is 1min, 3min, 2min and 1min in sequence, and the dry thickness of an adhesive layer formed by drying is 200 mu m;
4) filtering the pressure-sensitive adhesive dispersion liquid obtained in the step 2), coating the pressure-sensitive adhesive dispersion liquid on a light release film, and then sending the light release film into an oven for drying, wherein the temperature of the light release film from the inlet of the oven to the outlet of the inlet of the oven is respectively 50 ℃, 80 ℃, 100 ℃, 110 ℃ and 100 ℃, the residence time of the film layer in each temperature zone is respectively 1min, 3min, 2min and 1min, and the dry thickness of an adhesive layer formed by drying is 200 mu m; and then respectively sticking the adhesive layer with the light release film and the adhesive layer with the heavy release film in the step 3) to two sides of the aluminum foil.
Example 4
The embodiment provides a double-sided tape with a base material, which comprises an aluminum foil with the thickness of 10 micrometers, adhesive layers with the thicknesses of 200 micrometers on two sides of the aluminum foil, and a light release film and a heavy release film which are respectively positioned on the upper surface and the lower surface of the adhesive layers. Wherein, the ratio of the release force of the light release film to the release force of the heavy release film is 1: 2.5. the adhesive layer comprises the following components in parts by mass: 50 parts of styrene-isoprene-styrene block copolymer (SIS, Keteng D1114), 45 parts of rosin resin (Mitsukawa chemical, GA100), 20 parts of aromatic oil, 3 parts of antioxidant (BASF1076) and 15 parts of nickel-coated carbon powder (particle size is 70-80 meshes).
The preparation method of the double-sided adhesive tape with the base material comprises the following steps:
1) preparing 140 parts by mass of xylene, and then adding and dissolving 50 parts by mass of styrene-isoprene-styrene block copolymer (SIS);
2) sequentially adding 40 parts by mass of rosin resin, 20 parts by mass of aromatic oil, 3 parts by mass of antioxidant and 15 parts by mass of nickel-coated carbon powder into the solution formed in the step 1), and fully dissolving and dispersing to form a viscous and uniform pressure-sensitive adhesive dispersion liquid;
3) filtering the pressure-sensitive adhesive dispersion liquid obtained in the step 2), coating the pressure-sensitive adhesive dispersion liquid on a heavy release film, and then sending the heavy release film into a drying oven for drying, wherein the temperature of the drying oven from an inlet of the drying oven to an outlet of the drying oven comprises a plurality of temperature regions, the temperature of the temperature regions is 50 ℃, 80 ℃, 100 ℃, 110 ℃ and 100 ℃, the residence time of the film layer in each temperature region is 1min, 3min, 2min and 1min in sequence, and the dry thickness of an adhesive layer formed by drying is 200 mu m;
4) filtering the pressure-sensitive adhesive dispersion liquid obtained in the step 2), coating the pressure-sensitive adhesive dispersion liquid on a light release film, and then sending the light release film into an oven for drying, wherein the temperature of the light release film from the inlet of the oven to the outlet of the inlet of the oven is respectively 50 ℃, 80 ℃, 100 ℃, 110 ℃ and 100 ℃, the residence time of the film layer in each temperature zone is respectively 1min, 3min, 2min and 1min, and the dry thickness of an adhesive layer formed by drying is 200 mu m; and then respectively sticking the adhesive layer with the light release film and the adhesive layer with the heavy release film in the step 3) to two sides of the aluminum foil.
Example 5
The embodiment provides a double-sided tape with a base material, which comprises a conductive textile fabric (the surface resistance is less than 0.03 omega, the vertical resistance is less than 0.02 omega) with the thickness of 50 mu m, adhesive layers with the thicknesses of 200 mu m on two sides of the conductive fabric, and a light release film and a heavy release film which are respectively positioned on the upper surface and the lower surface of the adhesive layers. Wherein, the ratio of the release force of the light release film to the release force of the heavy release film is 1: 2.5. the adhesive layer comprises the following components in parts by mass: 50 parts of styrene-isoprene-styrene block copolymer (SIS, Keteng D1114), 45 parts of terpene-phenol resin (Keteng TP2040), 20 parts of aromatic oil, 3 parts of antioxidant (BASF1076) and 15 parts of nickel-coated carbon powder (particle size is 70-80 meshes).
The preparation method of the double-sided adhesive tape with the base material comprises the following steps:
1) preparing 140 parts by mass of xylene, and then adding and dissolving 50 parts by mass of styrene-isoprene-styrene block copolymer (SIS);
2) sequentially adding 40 parts by mass of terpene phenol resin, 20 parts by mass of aromatic oil, 3 parts by mass of antioxidant and 15 parts by mass of nickel-coated carbon powder into the solution formed in the step 1), and fully dissolving and dispersing to form a viscous and uniform pressure-sensitive adhesive dispersion liquid;
3) filtering the pressure-sensitive adhesive dispersion liquid obtained in the step 2), coating the pressure-sensitive adhesive dispersion liquid on a heavy release film, and then sending the heavy release film into a drying oven for drying, wherein the temperature of the drying oven from an inlet of the drying oven to an outlet of the drying oven comprises a plurality of temperature regions, the temperature of the temperature regions is 50 ℃, 80 ℃, 100 ℃, 110 ℃ and 100 ℃, the residence time of the film layer in each temperature region is 1min, 3min, 2min and 1min in sequence, and the dry thickness of an adhesive layer formed by drying is 200 mu m;
4) filtering the pressure-sensitive adhesive dispersion liquid obtained in the step 2), coating the pressure-sensitive adhesive dispersion liquid on a light release film, and then sending the light release film into an oven for drying, wherein the temperature of the light release film from the inlet of the oven to the outlet of the inlet of the oven is respectively 50 ℃, 80 ℃, 100 ℃, 110 ℃ and 100 ℃, the residence time of the film layer in each temperature zone is respectively 1min, 3min, 2min and 1min, and the dry thickness of an adhesive layer formed by drying is 200 mu m; and then respectively sticking the adhesive layer with the light release film and the adhesive layer with the heavy release film in the step 3) to two sides of the conductive textile cloth.
Example 6
The embodiment provides a double-sided tape with a base material, which comprises conductive foam (the surface resistance is less than 3 omega, and the vertical resistance is less than 2 omega) with the thickness of 500 mu m, adhesive layers with the thicknesses of 150 mu m on two sides of the conductive foam respectively, and a light release film and a heavy release film which are respectively positioned on the upper surface and the lower surface of the adhesive layers. Wherein, the ratio of the release force of the light release film to the release force of the heavy release film is 1: 2.5. the adhesive layer comprises the following components in parts by mass: 50 parts of styrene-isoprene-styrene block copolymer (SIS, Keteng D1114), 45 parts of rosin resin (Mitsukawa chemical, GA100), 20 parts of aromatic oil, 3 parts of antioxidant (BASF1076) and 15 parts of nickel-coated carbon powder (particle size 90-100 meshes).
The preparation method of the double-sided adhesive tape with the base material comprises the following steps:
1) preparing 140 parts by mass of xylene, and then adding and dissolving 50 parts by mass of styrene-isoprene-styrene block copolymer (SIS);
2) sequentially adding 40 parts by mass of rosin resin, 20 parts by mass of aromatic oil, 3 parts by mass of antioxidant and 15 parts by mass of nickel-coated carbon powder into the solution formed in the step 1), and fully dissolving and dispersing to form a viscous and uniform pressure-sensitive adhesive dispersion liquid;
3) filtering the pressure-sensitive adhesive dispersion liquid obtained in the step 2), coating the pressure-sensitive adhesive dispersion liquid on a heavy release film, and then sending the heavy release film into a drying oven for drying, wherein the temperature of the drying oven from an inlet of the drying oven to an outlet of the drying oven comprises a plurality of temperature regions, the temperature of the temperature regions is 60 ℃, 80 ℃, 100 ℃, 110 ℃ and 100 ℃, the residence time of the film layer in each temperature region is 1min, 2min, 1min and 1min in sequence, and the dry thickness of an adhesive layer formed by drying is 200 mu m;
4) filtering the pressure-sensitive adhesive dispersion liquid obtained in the step 2), coating the pressure-sensitive adhesive dispersion liquid on a light release film, and then sending the light release film into an oven for drying, wherein the temperature of the light release film from the inlet of the oven to the outlet of the inlet of the oven is 60 ℃, 80 ℃, 100 ℃, 110 ℃ and 100 ℃, the residence time of the film layer in each temperature zone is 1min, 2min, 1min and 1min in sequence, and the dry thickness of an adhesive layer formed by drying is 200 mu m; and then respectively attaching the adhesive layer with the light release film and the adhesive layer with the heavy release film in the step 3) to two sides of the conductive foam.
Performance testing
The double-sided adhesive tape provided by the embodiments 1-6 of the invention is tested for various performances, and the specific test method is as follows:
(1)180 degree peel force
According to the method of ASTM D3330, a foam double-sided tape with a width of 25mm is attached to different test materials, a 2kg roller is rolled back and forth once, the test materials are kept stand for 20min under the conditions of a temperature of 23 ℃ and a humidity of 50% RH, then a peeling force measuring device (universal material testing machine, Konja) is used for peeling under the conditions of a peeling angle of 180 DEG and a peeling speed of 300mm/min, the peeling force of 180 DEG is tested, and the average value of N which is 3 is used as the measured value.
(2) Dynamic shear force
Two standard steel plates are adhered together by using a foam double-sided adhesive tape with the size of 25mm multiplied by 25mm, a 2kg roller is rolled back and forth twice, the steel plates are placed for 30min under the conditions of the temperature of 23 ℃ and the humidity of 50% RH, a measuring device (universal material testing machine, Kejian) is used for stretching the two steel plates in opposite directions at the speed of 12.7mm/min, the maximum tension value before the two steel plates are separated is recorded, and the average value of N which is 3 is used as the measured value.
(3) Tensile strength and elongation at break
The measurement was carried out according to the method of astm d3759, and a foam double-sided tape having a width of 10mm was tested at a speed of 300mm/min with a measuring apparatus (universal testing machine, kojin) under the conditions of a temperature of 23 ℃ and a humidity of 50% RH, and the average value of N-3 was defined as the measured value.
(4) Retention force
According to the method of ASTM D3654, the dimension of the foam double-sided tape is 25mm multiplied by 25mm, the foam double-sided tape is rolled twice back and forth by a 2kg roller, and after standing for 20min under the conditions of 23 ℃ and 50% RH humidity, a weight of 1.5kg is hung for testing.
(5) Tensile removal force
Two standard steel plates are attached together by using a foam double-sided adhesive tape with the size of 10mm multiplied by 60mm, a handle with the size of 10mm multiplied by 10mm as a removal handle is reserved, a 2kg roller is rolled twice back and forth, the steel plates are placed at the temperature of 70 ℃ for 3 days, a measuring device (universal material testing machine, Kejian) is used for laterally stretching and removing foam adhesive at the speed of 300mm/min, the average tension value in the process is recorded, and the average value of N which is 3 is used as the measured value.
(6) Resistance (RC)
And (3) tearing off the release material from the sample to be tested, enabling the rubber surface to face upwards, naturally placing the sample to be tested on the rubber surface in a test copper block (250 +/-5 g) clamp, and reading the numerical value of the digital micro-ohmmeter after the numerical value is stable, namely the impedance value.
The test results of the above properties of the stretch removable conductive double-sided tapes provided in embodiments 1 to 6 of the present invention are shown in table 1.
Table 1 performance test results of stretch removable conductive double-sided adhesive tape
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A stretch removable conductive adhesive layer comprises the following components in parts by mass:
2. the conductive adhesive layer of claim 1, wherein the thermoplastic elastomer comprises one or more of styrene block copolymers, polyolefin block copolymers, acrylic block copolymers, polyisobutylene, thermoplastic polyurethane, butyl rubber and ethylene propylene diene rubber.
3. The electrically conductive adhesive layer according to claim 1, wherein the tackifier resin comprises one or more of a terpene resin, a rosin resin, and a petroleum resin.
4. The conductive adhesive layer according to claim 1, wherein the softening agent comprises one or more of mineral oil, liquid rubber, and dibasic acid ester.
5. The conductive adhesive layer according to claim 1, wherein the antioxidant comprises one or more of a bulky-substituent phenolic antioxidant, an aniline antioxidant, a sulfur-containing compound antioxidant, or a benzimidazole antioxidant.
6. The conductive adhesive layer according to claim 1, wherein the conductive filler includes one or more of conductive carbon fibers, conductive polymers, conductive carbon black, metal fibers, metal powder, and metal-coated powder.
7. The adhesive layer according to any one of claims 1 to 6, wherein the thickness of the adhesive layer is 3 to 1500 μm.
8. A stretch removable conductive double-sided tape comprising the conductive adhesive layer of any one of claims 1 to 7 and release films attached to both sides of the adhesive layer;
or, comprises a conductive substrate layer, the conductive adhesive layer of any one of claims 1 to 7 respectively attached to two sides of the conductive substrate layer, and release films respectively attached to the surfaces of the adhesive layers on two sides.
9. A method for manufacturing a stretch removable conductive double-sided tape comprises the following steps:
a) arranging the conductive adhesive layer as defined in any one of claims 1 to 7 on one side of a release film, and then covering a release film on the surface of the conductive adhesive layer to obtain a stretch removable substrate-free conductive double-sided tape;
or the like, or, alternatively,
b) the conductive adhesive layer of any one of claims 1 to 7 is arranged on one side of a release film, and then the release film provided with the conductive adhesive layer is respectively attached to two sides of a conductive substrate layer, so that the substrate conductive double-sided adhesive tape capable of being stretched and removed is obtained.
10. The use of the conductive double-sided tape of claim 8 in electronic products for fixedly connecting parts in the electronic products and eliminating static electricity of the electronic products.
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| CN201910868400.7A CN110628368A (en) | 2019-09-12 | 2019-09-12 | Stretchable and removable conductive adhesive layer, conductive double-sided adhesive tape and manufacturing method of conductive double-sided adhesive tape |
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| CN112175541A (en) * | 2020-09-16 | 2021-01-05 | 广州慧谷化学有限公司 | Adhesive tape capable of being removed at 90 degrees, preparation method thereof and electronic product |
| CN112358835A (en) * | 2020-11-04 | 2021-02-12 | 苏州赛伍应用技术股份有限公司 | Adhesive composition, easy-to-pull adhesive tape and preparation method and application thereof |
| CN113278371A (en) * | 2021-05-19 | 2021-08-20 | 佳普电子新材料(连云港)有限公司 | Reworkable electromagnetic shielding double-sided tape with excellent stability and preparation method thereof |
| CN114716939A (en) * | 2021-08-11 | 2022-07-08 | 常州威斯双联科技有限公司 | Conductive removable double-sided adhesive tape and preparation method thereof |
| CN114927057A (en) * | 2022-03-14 | 2022-08-19 | 友达光电股份有限公司 | Display device and assembling method thereof |
| CN115627132A (en) * | 2022-12-19 | 2023-01-20 | 广州鹿山新材料股份有限公司 | Conductive adhesive material and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112175541A (en) * | 2020-09-16 | 2021-01-05 | 广州慧谷化学有限公司 | Adhesive tape capable of being removed at 90 degrees, preparation method thereof and electronic product |
| CN112175541B (en) * | 2020-09-16 | 2022-07-19 | 广州慧谷功能材料有限公司 | Adhesive tape capable of being removed at 90 degrees, preparation method thereof and electronic product |
| CN112358835A (en) * | 2020-11-04 | 2021-02-12 | 苏州赛伍应用技术股份有限公司 | Adhesive composition, easy-to-pull adhesive tape and preparation method and application thereof |
| CN113278371A (en) * | 2021-05-19 | 2021-08-20 | 佳普电子新材料(连云港)有限公司 | Reworkable electromagnetic shielding double-sided tape with excellent stability and preparation method thereof |
| CN114716939A (en) * | 2021-08-11 | 2022-07-08 | 常州威斯双联科技有限公司 | Conductive removable double-sided adhesive tape and preparation method thereof |
| CN114927057A (en) * | 2022-03-14 | 2022-08-19 | 友达光电股份有限公司 | Display device and assembling method thereof |
| CN114927057B (en) * | 2022-03-14 | 2024-03-01 | 友达光电股份有限公司 | Display device and method for assembling the same |
| CN115806776A (en) * | 2022-11-24 | 2023-03-17 | 芜湖徽氏新材料科技有限公司 | Pressure-sensitive adhesive tape capable of being stretched and unstuck and preparation method thereof |
| CN115627132A (en) * | 2022-12-19 | 2023-01-20 | 广州鹿山新材料股份有限公司 | Conductive adhesive material and preparation method and application thereof |
| CN116344098A (en) * | 2023-03-15 | 2023-06-27 | 北京梦之墨科技有限公司 | Low-rigidity conductive paste and preparation method and application thereof |
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