CN114410229B - Adhesive tape coating liquid composition, adhesive tape coating liquid, adhesive tape and preparation method thereof - Google Patents
Adhesive tape coating liquid composition, adhesive tape coating liquid, adhesive tape and preparation method thereof Download PDFInfo
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- CN114410229B CN114410229B CN202210004717.8A CN202210004717A CN114410229B CN 114410229 B CN114410229 B CN 114410229B CN 202210004717 A CN202210004717 A CN 202210004717A CN 114410229 B CN114410229 B CN 114410229B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/18—Homopolymers or copolymers of aromatic monomers containing elements other than carbon and hydrogen
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D165/00—Coating compositions based on macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Coating compositions based on derivatives of such polymers
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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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
- C09J7/29—Laminated material
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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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
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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
- 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
- C09J2301/122—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 only on one side of the carrier, e.g. single-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
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
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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
- C09J2301/314—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 the adhesive layer and/or the carrier being conductive
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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
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2479/00—Presence of polyamine or polyimide
- C09J2479/08—Presence of polyamine or polyimide polyimide
- C09J2479/086—Presence of polyamine or polyimide polyimide in the substrate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesive Tapes (AREA)
Abstract
The invention provides a tape coating liquid composition, a tape coating liquid, a tape and a preparation method thereof. The composition comprises a polyacrylic resin, an antistatic agent and an antioxidant; the comonomer of the polyacrylic resin comprises a soft monomer, a hard monomer and a crosslinking monomer; wherein the content of the soft monomer is 50-90 wt%, the content of the hard monomer is 5-25 wt% and the content of the crosslinking monomer is 5-25 wt% based on the total weight of the polyacrylic resin. The adhesive tape containing the adhesive tape coating liquid composition has stable viscosity and no deformation after being attached to LCP (liquid crystal polymer) and is subjected to high temperature of 260 ℃, the antistatic effect is always kept, no adhesive residue exists in the normal test process, and the electrostatic property of the product is not influenced after the adhesive tape is subjected to high temperature processing.
Description
Technical Field
The invention relates to the technical field of adhesives, in particular to a tape coating liquid composition and a preparation method thereof, a tape coating liquid obtained from the tape coating liquid composition, a tape containing the tape coating liquid and a preparation method thereof.
Background
In the current age, 5G business is on, the information volume of communication processing is increasing exponentially, and an antenna is an indispensable component for realizing the span-type promotion. How to achieve lower losses, smaller size, better thermal conduction, and more integration at high frequencies becomes a great challenge for 5G antenna materials. LCP (Liquid Crystal Polymer, liquid crystal high polymer) and MPI ((Modified Polyimide, modified polyimide) materials are expected to stand out in the future in the 5G era due to the small loss factor, and the replacement of LCP flexible plates to antenna transmission lines has become a trend of development in the future.
However, the high temperature resistant adhesive tapes used in the market at present have some problems in the use process: after the LCP is adhered to the adhesive tape, the situation of residual adhesive can occur; and the antistatic effect of the adhesive tape per se disappears after the high-temperature process, so that the static electricity generated in the tearing process has damage to the LCP.
Therefore, developing an adhesive tape which has stable viscosity and no residual adhesive after being treated at a high temperature of 260 ℃ and has an antistatic effect has important significance.
Disclosure of Invention
The present invention has been made to overcome the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a tape coating composition and a method for preparing the same, a tape coating obtained from the tape coating composition, a tape containing the tape coating, and a method for preparing the same. The adhesive tape is attached to the LCP, is stable in viscosity and free of deformation after being subjected to high temperature of 260 ℃, has an antistatic effect all the time, has no residual adhesive in a normal test process, and does not influence the electrostatic property of a product after being subjected to high-temperature processing.
In order to achieve the above object, the first aspect of the present invention provides a tape coating liquid composition comprising a polyacrylic resin, an antistatic agent, an antioxidant; the comonomer of the polyacrylic resin comprises a soft monomer, a hard monomer and a crosslinking monomer;
Wherein the content of the soft monomer is 50-90 wt%, the content of the hard monomer is 5-25 wt% and the content of the crosslinking monomer is 5-25 wt% based on the total weight of the polyacrylic resin.
In the present invention, the "soft monomer" refers to a comonomer having a glass transition temperature of less than 0 degree in the acrylate monomer. By "hard monomer" is meant a comonomer in the acrylate monomer having a glass transition temperature above 0 degrees. The crosslinking monomer refers to a monomer with the main crosslinking function of the acrylate monomer, the monomer has strong polar functional groups, so that the adhesive property of the pressure-sensitive adhesive is obviously improved, and the physical and chemical crosslinking can be accompanied by the great improvement of the cohesive strength, heat resistance and ageing resistance of the pressure-sensitive adhesive.
In the present invention, the soft monomer, the hard monomer and the crosslinking monomer are comonomers for preparing the polyacrylic resin, and specific kinds of the soft monomer, the hard monomer and the crosslinking monomer are not limited, and acrylate monomers conventionally used in the art may be selected. In order to improve the copolymerization effect of the monomers, preferably, the soft monomer is an acrylic ester monomer with a glass transition temperature of-10 to-90 ℃; the hard monomer is selected from acrylate monomers with glass transition temperature of 5-120 ℃; the crosslinking monomer is selected from acrylate monomers with crosslinking effect.
By the above-mentioned polyacrylic resin, antistatic agent, antioxidant being used in combination, a better effect than the prior art can be achieved. In order to further enhance the effect, one or more of the technical features may be further preferred.
Preferably, the soft monomer is selected from one or more of butyl acrylate, isooctyl acrylate and ethyl acrylate; butyl acrylate is more preferred.
Preferably, the hard monomer is selected from one or more of vinyl acetate, methyl acrylate, methyl methacrylate and isobornyl acrylate.
More preferably, the hard monomer is a combination of vinyl acetate, methyl acrylate and methyl methacrylate. Further preferably, the weight ratio of the vinyl acetate, the methyl acrylate and the methyl methacrylate is 1: (1-3): (2-5).
Preferably, the crosslinking monomer is selected from one or more of acrylic acid, methacrylic acid, beta-carboxyethyl acrylate, hydroxyethyl acrylate and hydroxypropyl acrylate; more preferably acrylic acid.
The inventor of the present invention found that the use of polyacrylic resin, antistatic agent, and antioxidant in combination with the raw materials constituting the preparation of the adhesive tape coating liquid can provide an adhesive tape containing the adhesive tape coating liquid with good high temperature resistance, can withstand a high temperature of 260 ℃ and is stable in viscosity without deformation, and maintains the antistatic effect all the time.
In order to make the effect of the synergistic combination of soft monomer, hard monomer and crosslinking monomer in the polyacrylic resin better. Preferably, the soft monomer is contained in an amount of 60 to 80 wt%, the hard monomer is contained in an amount of 8 to 20 wt%, and the crosslinking monomer is contained in an amount of 8 to 20 wt%, based on the total weight of the polyacrylic resin.
In one embodiment of the invention, the co-monomers of the polyacrylic resin are a combination of butyl acrylate (as the soft monomer), vinyl acetate (as the hard monomer), methyl acrylate and methyl methacrylate, and acrylic acid (as the cross-linking monomer). Wherein, the weight ratio of the vinyl acetate to the methyl acrylate to the methyl methacrylate is 1: (1-3): (2-5).
The inventor of the invention discovers that after the combination of the specific soft monomers, the specific hard monomers and the specific crosslinking monomers is selected, the synergistic effect is better, the prepared polyacrylic resin has better performance, and the adhesive tape prepared from the adhesive tape coating liquid has more stable viscosity and better adhesive residue-free effect.
Preferably, the antistatic agent is a lithium salt; preferably, the antistatic agent is selected from one or a combination of two of lithium difluorosulfimide salt, lithium difluorooxalato borate and lithium trifluoromethane sulfonate; more preferably lithium bis (fluorosulfonyl) imide.
Preferably, the antioxidant is a hindered phenolic antioxidant, preferably the antioxidant is selected from one or more of basf 168, basf 126, basf 1010 and basf 1076.
Preferably, the composition further comprises a curing agent, which is an epoxy curing agent, and may be glycerol methacrylate.
Preferably, the composition further comprises a solvent; the solvent may be selected from one or more of toluene, ethyl acetate.
In order to make the effect of the polyacrylic resin, the antistatic agent, the antioxidant and the curing agent used in combination better. The content of the polyacrylic resin is 70-90 wt%, the content of the antistatic agent is 0.5-3 wt%, the content of the antioxidant is 1-6 wt%, the content of the curing agent is 1-5 wt%, and the content of the solvent is 5-20 wt%, based on the total weight of the composition.
More preferably, the polyacrylic resin is contained in an amount of 78 to 88 wt%, the antistatic agent is contained in an amount of 0.8 to 1.5 wt%, the antioxidant is contained in an amount of 2 to 5 wt%, the curing agent is contained in an amount of 1.5 to 3 wt%, and the solvent is contained in an amount of 6 to 15 wt%, based on the total weight of the composition.
It will be appreciated that the first aspect of the invention is intended as a composition and is intended to limit the formulation and not the form of the material present, i.e. the components may be mixed with each other or stored separately. If the reaction is not performed at an improper timing, whether to mix or store the mixture may be selected as needed.
It will be appreciated that the composition of the present invention may be free of solvent for ease of manufacture, transportation and sale, and that the purchaser may prepare and add solvent himself during the preparation of the tape coating.
The second aspect of the present invention provides a method for preparing the adhesive tape coating composition of the first aspect of the present invention, comprising the steps of:
(1) Under inert atmosphere and heating conditions, carrying out first contact on the soft monomer, the hard monomer and the crosslinking monomer in the adhesive tape coating liquid composition;
(2) Carrying out second contact on the material obtained in the step (1) and a first initiator, and carrying out third contact on the material after the second contact and the second initiator;
(3) And (3) carrying out fourth contact on the material obtained in the step (2) with the antistatic agent, the antioxidant and the curing agent.
It should be noted that, the numerical expressions "first", "second", and the like in the present invention are merely used to distinguish different reaction processes, and different existence forms or usage modes do not represent sequential differences.
Wherein in the step (1), the first contact is a mixing process of a soft monomer, a hard monomer and a crosslinking monomer. The conditions of the first contact include: the heating temperature is 40-80deg.C, preferably 50-70deg.C; the heating time is 0.3-3h, preferably 0.6-1.5h.
In the step (2), the second contact is a process of generating polyacrylic resin by copolymerization of a soft monomer, a hard monomer and a crosslinking monomer under the action of a first initiator. The conditions of the second contact include: the heating temperature is 50-80deg.C, preferably 60-70deg.C; the heating time is 2-7 hours, preferably 3-5 hours.
In the step (2), the third contact is a process of generating polyacrylic resin by copolymerization of a soft monomer, a hard monomer and a crosslinking monomer under the action of a second initiator. The conditions of the third contact include: the heating temperature is 50-80deg.C, preferably 60-70deg.C; the heating time is 2-7 hours, preferably 3-5 hours.
In the step (2), the initiator is added step by step to ensure that the polymerization reaction of the soft monomer, the hard monomer and the crosslinking monomer keeps a relatively stable initiator concentration in the whole process, thereby being beneficial to the smooth progress of the polymerization reaction and improving the monomer conversion rate. In order to further enhance the monomer conversion of the above three monomer copolymerization reaction, it is preferable that the first initiator and the second initiator are the same.
In one embodiment of the present invention, the first initiator and the second initiator may be selected from one of dibenzoyl peroxide or azobisisobutyronitrile.
Wherein in the step (3), the fourth contact is a process of mixing the polyacrylic resin with the antistatic agent, the antioxidant and the curing agent. The conditions of the fourth contact include: the temperature is 20-30deg.C, the time is 30-50min, and the mixing speed is 200-300rpm.
Preferably, the step (2) further comprises a step of diluting the polyacrylic resin after the soft monomer, the hard monomer and the crosslinking monomer are copolymerized to form the polyacrylic resin. For example, a proper amount of solvent is added to obtain a polyacrylic resin with a solid content of 25-40% (preferably 27-33%). The solvent is not particularly limited, and may be one or more selected from ethyl acetate and toluene.
In a third aspect, the present invention provides a tape coating liquid, which contains the tape coating liquid composition according to the first aspect of the present invention or the composition obtained by the method according to the second aspect of the present invention, or is prepared from the tape coating liquid composition.
The adhesive tape coating liquid of the invention is a liquid product which can be directly applied to coating, contains the adhesive tape coating liquid composition, and can also contain auxiliary materials, auxiliary agents, solvents and other components which are added conventionally in the field, and the adhesive tape coating liquid can be added in actual need.
The adhesive tape coating liquid according to the third aspect of the present invention has all the advantages of the adhesive tape coating liquid composition according to the first aspect of the present invention, and will not be described herein.
In a fourth aspect, the present invention provides an adhesive tape comprising a substrate layer and a functional coating applied to a surface of the substrate layer; the functional coating is prepared from the adhesive tape coating liquid according to the third aspect of the invention or the adhesive tape coating liquid composition according to the first aspect of the invention.
In the invention, the functional coating has the advantages of high temperature resistance and static resistance, has adhesiveness, and has the stripping force of attaching SUS (Steel Use Stainless, stainless steel brand: kochia) of more than or equal to 1300gf/in, and mainly plays a role in attaching LCP. The functional coating has all the advantages of the tape coating composition according to the first aspect of the present invention, and is not described in detail herein.
In order to make the adhesive tape have a better effect without residual adhesive after use, the functional coating preferably has a thickness of 20 μm to 100 μm, preferably 35 μm to 75 μm.
In the present invention, the material of the base material layer is not particularly limited, and materials conventionally used in the art as a base material of an adhesive tape may be selected. For example, the substrate layer may be polyimide, preferably PI film (PolyimideFilm).
Preferably, the thickness of the substrate layer is from 30 μm to 200 μm, preferably from 50 μm to 150 μm.
Preferably, the transmittance of the substrate layer is not less than 15% and the haze is not more than 1%.
The inventor of the invention discovers that the light transmission performance of the substrate layer in 940nm wave band is controlled to be 69.2% -84.2%, and the light transmission performance of the substrate layer in 525nm wave band is controlled to be 5.6% -34.2%, so that the problem of missed pasting products in SMT (Surface Mounted Technology) manufacturing process can be solved, and assembly defects and waste are reduced.
In the invention, an antistatic coating is also included between the substrate layer and the functional coating. The antistatic coating is arranged and matched with the functional coating for use, so that the antistatic performance of the adhesive tape is better.
Preferably, the functional components of the antistatic coating include one or more of polymer of PEDOT/PSS, quaternary ammonium inner salt and aliphatic amine ethylene oxide adduct. It will be appreciated that the antistatic coating may be formed by adding a solvent to the coating solution of the antistatic coating in addition to the above-described functional components having conductive and antistatic effects. The solvent is not particularly limited, and may dissolve the functional component and not chemically react with the functional component. For example, the solvent may be a combination of two of deionized water, isopropyl alcohol, and ethanol.
In one embodiment of the invention, the antistatic coating comprises a polymer of PEDOT/PSS, deionized water and isopropyl alcohol. Preferably, the polymer content of the PEDOT/PSS is 30-60 wt%, the deionized water content is 10-30 wt%, and the isopropanol content is 30-60 wt%, based on the total weight of the antistatic coating.
Preferably, the antistatic coating has a thickness of 0.1 μm to 5. Mu.m, preferably 0.5 μm to 2. Mu.m.
In the invention, the surface of the side, far away from the functional coating, of the substrate layer is coated with a protective coating, and the surface of the side, far away from the substrate layer, of the protective coating is covered with a protective layer.
The inventors of the present invention have found that the tape used for positioning and protection requires a positioning action before applying to the LCP, but may affect the accuracy of positioning if the surface of the tape is slightly scratched. Therefore, the protective coating and the protective layer are added in the adhesive tape provided by the invention, so that the appearance of the adhesive tape can be protected, and the situation that the appearance lines, pollution and the like of the substrate layer influence the positioning effect of the adhesive tape is avoided.
Preferably, the protective coating comprises one or more of polysiloxanes, MQ resins (silicone resins composed of monofunctional and tetrafunctional siloxane units), vinyl silage, catalysts, solvents, inhibitors, anchors, and cross-linking agents.
In one embodiment of the invention, the polysiloxane is present in an amount of 3 to 7 wt%, the MQ resin is present in an amount of 6 to 12 wt%, the vinyl silicone gum is present in an amount of 20 to 30 wt%, the catalyst is present in an amount of 0.3 to 0.7 wt%, the solvent is present in an amount of 50 to 70 wt%, the inhibitor is present in an amount of 0.1 to 0.5 wt%, the anchor is present in an amount of 0.1 to 0.6 wt%, and the crosslinking agent is present in an amount of 0.2 to 0.5 wt%, based on the total weight of the protective coating.
In the protective coating, the specific choice of catalyst, solvent, inhibitor, anchor agent and crosslinking agent is not particularly limited, and materials capable of functioning in the art may be selected.
Preferably, the protective coating has a thickness of 3 μm to 30 μm, preferably 5 μm to 20 μm.
In order to make the protective coating easier to tear, the occurrence of a residual glue on the substrate layer is avoided. Preferably, the protective coating has a relatively low tack, preferably a tack of 3gf/in or less.
In the invention, the protective layer is attached to the protective coating, and the protective layer and the protective coating are directly removed when the adhesive tape is used. The choice of the protective layer material is not particularly limited, and a transparent film material that can be bonded to the protective coating layer may be selected. For example, the protective layer may be a transparent polyester film.
Preferably, the thickness of the protective layer is 10 μm to 100 μm, preferably 25 μm to 50 μm.
In the invention, the surface of the side of the functional coating, which is far away from the substrate layer, is covered with the release material layer.
Preferably, the release material layer may be selected from one or more of PET, PE and OPP.
Preferably, the thickness of the release layer is from 10 μm to 100 μm, preferably from 25 μm to 50 μm.
In one embodiment of the present invention, the adhesive tape has a multi-layer structure, and as can be seen by referring to the schematic structural diagram of fig. 1, the adhesive tape sequentially comprises a protective layer, a protective coating layer, a substrate layer, an antistatic coating layer, a functional coating layer and a release material layer from top to bottom. The multi-layer structure is matched, so that the adhesive tape provided by the invention has the advantages of high temperature resistance, static resistance, positioning and protecting effects by being attached with LCP, no residual adhesive after tearing, and the like.
In a fifth aspect, the present invention provides a method for preparing the adhesive tape according to the fourth aspect, which comprises the following steps, using the adhesive tape coating composition according to the first aspect of the present invention as a raw material:
(a) Preparing a coating liquid for obtaining a functional coating by taking the adhesive tape coating liquid composition as a raw material;
(b) Coating the surface of the substrate layer with the coating liquid of the antistatic coating;
(c) Coating the coating liquid of the functional coating obtained in the step (a) on the surface of the antistatic coating, and drying;
(d) Attaching the release material layer to the surface of the functional coating;
(e) And coating the protective coating on the surface of the protective layer, drying, and attaching the protective coating on the surface of the substrate layer.
Wherein the sequence of steps (a) - (e) can be adjusted according to actual needs.
The adhesive tape according to the fourth aspect of the present invention can be obtained by the production method according to the fifth aspect of the present invention.
The technical scheme adopted by the invention has the following beneficial effects:
(1) After the adhesive tape coating liquid composition is prepared into the adhesive tape coating liquid, the adhesive tape containing the adhesive tape coating liquid has good high temperature resistance, the self-carried antistatic coating of the adhesive tape does not migrate under the high temperature condition of 260 ℃ in the bonding process, the whole adhesive surface is not degummed, the antistatic effect is good, and after the LCP is bonded, the adhesive tape still has high-efficiency antistatic effect after being subjected to reflow welding at 260 ℃ for 15 min;
(2) The adhesive tape provided by the invention has antistatic performance and high temperature resistance, is attached with LCP to play a role in positioning and protecting, and has no residual adhesive after tearing;
(3) The adhesive tape provided by the invention has an appearance protection function, and can prevent the positioning effect of the adhesive tape from being influenced by appearance lines, pollution and other conditions of the substrate layer.
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.
Drawings
Fig. 1 is a schematic view showing the structure of the adhesive tape provided in example 1.
Detailed Description
Unless defined otherwise, all scientific and technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention relates.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Materials, reagents and the like used in the examples described below are commercially available unless otherwise specified.
The invention is described in detail below in connection with specific embodiments, which are intended to be illustrative rather than limiting.
In the examples below, unless otherwise specified, all of the ingredients used were commercially available analytical grade. 1 part by weight represents 1g.
PREPARATION EXAMPLE 1 preparation of polyacrylic resin
(1) Preparing raw materials
Soft monomer: butyl acrylate, 80 parts by weight;
hard monomer: vinyl acetate, 2 parts by weight; methyl acrylate, 4 parts by weight; methyl methacrylate, 6 parts by weight;
Crosslinking monomer: acrylic acid, 8 parts by weight;
and (3) an initiator: 0.4 parts by weight of azobisisobutyronitrile;
Solvent: ethyl acetate, 130 parts by weight.
(2) Adding the soft monomer, the hard monomer and the crosslinking monomer in the step (1) into a reaction kettle according to a formula, introducing inert gas, and heating to 60 ℃ for reaction for 1h; firstly adding 0.2 weight part of initiator, reacting for 4 hours at 65 ℃, then adding 0.2 weight part of initiator, reacting for 4 hours, and finally adding solvent to obtain the polyacrylic resin with 30% of solid content.
PREPARATION EXAMPLE 2 preparation of polyacrylic resin
Reference was made to the procedure of preparation 1, except that the contents of the three monomers were changed. Wherein, soft monomer, 90 weight shares; hard monomer, 5 parts by weight; 5 parts by weight of a crosslinking monomer; the type and internal proportions of the monomers are kept unchanged (e.g., the proportions of the three components in the hard monomer are unchanged, only the total amount is changed).
PREPARATION EXAMPLE 3 preparation of polyacrylic resin
(1) Preparing raw materials
Soft monomer: butyl acrylate, 70 parts by weight;
Hard monomer: vinyl acetate, 3 parts by weight; methyl acrylate, 4 parts by weight; 10 parts by weight of methyl methacrylate;
crosslinking monomer: 13 parts by weight of acrylic acid;
and (3) an initiator: 0.4 parts by weight of azobisisobutyronitrile;
Solvent: ethyl acetate, 130 parts by weight.
(2) Adding the soft monomer, the hard monomer and the crosslinking monomer in the step (1) into a reaction kettle according to a formula, introducing inert gas, and heating to 60 ℃ for reaction for 1h; firstly adding 0.2 weight part of initiator, reacting for 4 hours at 65 ℃, then adding 0.2 weight part of initiator, reacting for 4 hours, and finally adding solvent to obtain the polyacrylic resin with the solid content of 27%.
PREPARATION EXAMPLE 4 preparation of polyacrylic resin
(1) Preparing raw materials
Soft monomer: butyl acrylate, 80 parts by weight;
hard monomer: vinyl acetate, 2 parts by weight; methyl acrylate, 4 parts by weight; methyl methacrylate, 6 parts by weight;
Crosslinking monomer: acrylic acid, 8 parts by weight;
and (3) an initiator: 0.8 parts by weight of azobisisobutyronitrile;
Solvent: ethyl acetate, 130 parts by weight.
(2) Adding the soft monomer, the hard monomer and the crosslinking monomer in the step (1) into a reaction kettle according to a formula, introducing inert gas, and heating to 60 ℃ for reaction for 1h; adding 0.4 weight part of initiator, reacting for 4 hours at 65 ℃, adding 0.4 weight part of initiator, reacting for 4 hours, and finally adding solvent to obtain the polyacrylic resin with the solid content of 33%.
PREPARATION EXAMPLE 5 preparation of polyacrylic resin
The procedure of preparation 1 was followed, except that the composition of the three monomers was changed and the proportions were kept unchanged. Wherein, the same amount of isooctyl acrylate replaces butyl acrylate; equal amounts of isobornyl acrylate instead of a combination of vinyl acetate, methyl acrylate and methyl methacrylate; equal amounts of methacrylic acid replace acrylic acid.
Comparative preparation example 1 preparation of polyacrylic resin
Reference was made to the process of preparation 1, except that the total amount of soft monomer, hard monomer and crosslinking monomer was kept constant, and the amounts of the monomer components were changed: soft monomer, 20 parts by weight; hard monomer, 40 parts by weight; crosslinking monomer: 40 parts by weight; the type and internal proportion of the monomers are kept unchanged.
Example 1
First, raw materials are prepared
1. Functional coating raw material
Polyacrylic resin: 85 parts by weight of the polyacrylic resin obtained in preparation example 1;
antistatic agent: 1 part by weight of lithium bis (fluorosulfonyl) imide;
antioxidant: pasteur 168,1 parts by weight; pasteur 1076,2 parts by weight;
Curing agent: 2 parts by weight of glycerol methacrylate (solid content 5%);
solvent: toluene, 9 parts by weight.
2. Antistatic coating raw material
Conductive polymer: 50 parts by weight of PEDOT/PSS polymer;
solvent: deionized water, 20 parts by weight, isopropanol and 30 parts by weight.
3. Protective coating materials
Functional components: 5 parts by weight of polysiloxane; 10 parts by weight of MQ resin; vinyl silicone rubber, 25 parts by weight;
Catalyst: 0.5 parts by weight of a platinum catalyst;
Solvent: toluene, 58 parts by weight;
inhibitors: sulfite, 0.5 parts by weight;
And (3) anchoring agent: 0.5 parts by weight of a silane coupling agent;
Crosslinking agent: 0.5 parts by weight of hydrogen-containing silicone oil.
4. And (3) a protective layer: transparent polyester film, thickness 40 μm.
5. A substrate layer: the polyimide film had a thickness of 100. Mu.m.
6. Release material layer: the PET film had a thickness of 40. Mu.m.
(II) preparation of adhesive tape
Referring to the schematic structural diagram of fig. 1, the method of preparing the adhesive tape includes the steps of:
(1) The polyacrylic resin, the antistatic agent, the antioxidant and the curing agent are mixed according to the proportion to prepare a coating liquid of the functional coating, wherein the mixing temperature is 25 ℃, the mixing time is 40min, and the mixing speed is 250rpm;
(2) Mixing polymer of PEDOT/PSS, deionized water and isopropanol to obtain a coating liquid of an antistatic coating, and coating the coating liquid of the antistatic coating on one surface of a substrate layer; the thickness of the antistatic coating is about 1 μm;
(3) Coating the coating liquid of the functional coating obtained in the step (1) on the surface of the antistatic coating, and drying in an oven at 110 ℃; the thickness of the functional coating is about 50 μm;
(4) Attaching a release material layer to the surface of the functional coating;
(5) Mixing the raw materials of the protective coating, coating the mixture on the surface of the protective layer, and curing at a high temperature of 150 ℃ to form the protective coating; the protective coating has a thickness of about 15 μm;
(6) And (3) attaching the protective layer obtained in the step (5) to the other surface of the substrate layer, and finally preparing the adhesive tape.
Example 2
First, raw materials are prepared
1. Functional coating raw material
Polyacrylic resin: 80 parts by weight of the polyacrylic resin obtained in preparation example 1;
antistatic agent: 2 parts by weight of lithium bis (fluorosulfonyl) imide;
Antioxidant: pasteur 168,1.5 parts by weight; pasteur 1076,2.5 parts by weight;
Curing agent: glycerol methacrylate (solid content 5%), 3 parts by weight;
solvent: toluene, 11 parts by weight.
2. Antistatic coating raw material
Conductive polymer: 40 parts by weight of PEDOT/PSS polymer;
solvent: deionized water, 30 parts by weight, isopropanol and 30 parts by weight.
3. Protective coating materials
Functional components: 3 parts by weight of polysiloxane; MQ resin, 12 parts by weight; vinyl silicone rubber, 20 parts by weight;
Catalyst: 0.3 parts by weight of a platinum catalyst;
solvent: toluene, 63.4 parts by weight;
inhibitors: sulfite, 0.5 parts by weight;
and (3) anchoring agent: 0.6 parts by weight of a silane coupling agent;
crosslinking agent: 0.2 parts by weight of hydrogen-containing silicone oil.
4. And (3) a protective layer: the transparent polyester film had a thickness of 25. Mu.m.
5. A substrate layer: the polyimide film had a thickness of 150. Mu.m.
6. Release material layer: the PET film had a thickness of 25. Mu.m.
(II) preparation of adhesive tape
Referring to the schematic structural diagram of fig. 1, the method of preparing the adhesive tape includes the steps of:
(1) The polyacrylic resin, the antistatic agent, the antioxidant and the curing agent are mixed according to the proportion to prepare a coating liquid for obtaining the functional coating, wherein the mixing temperature is 20 ℃, the mixing time is 50min, and the mixing speed is 200rpm;
(2) Mixing polymer of PEDOT/PSS, deionized water and isopropanol to obtain a coating liquid of an antistatic coating, and coating the coating liquid of the antistatic coating on one surface of a substrate layer; the thickness of the antistatic coating is about 0.5 μm;
(3) Coating the coating liquid of the functional coating obtained in the step (1) on the surface of the antistatic coating, and drying in an oven at 110 ℃; the thickness of the functional coating is about 75 μm;
(4) Attaching a release material layer to the surface of the functional coating;
(5) Mixing the raw materials of the protective coating, coating the mixture on the surface of the protective layer, and curing at a high temperature of 150 ℃ to form the protective coating; the protective coating has a thickness of about 5 μm;
(6) And (3) attaching the protective layer obtained in the step (5) to the other surface of the substrate layer, and finally preparing the adhesive tape.
Example 3
First, raw materials are prepared
1. Functional coating raw material
Polyacrylic resin: 78 parts by weight of the polyacrylic resin obtained in preparation example 1;
Antistatic agent: 1.5 parts by weight of lithium bis (fluorosulfonyl) imide;
Antioxidant: pasteur 168,1.5 parts by weight; pasteur 1076,2.5 parts by weight;
curing agent: 2.5 parts by weight of glycerol methacrylate (solid content 5%);
solvent: toluene, 14 parts by weight.
2. Antistatic coating raw material
Conductive polymer: 50 parts by weight of PEDOT/PSS polymer;
solvent: deionized water, 20 parts by weight, isopropanol and 30 parts by weight.
3. Protective coating materials
Functional components: 7 parts by weight of polysiloxane; MQ resin, 6 parts by weight; vinyl silicone rubber, 30 parts by weight;
catalyst: 0.7 parts by weight of a platinum catalyst;
Solvent: toluene, 55.6 parts by weight;
Inhibitors: sulfite, 0.1 parts by weight;
And (3) anchoring agent: 0.1 parts by weight of a silane coupling agent;
Crosslinking agent: 0.5 parts by weight of hydrogen-containing silicone oil.
4. And (3) a protective layer: the transparent polyester film had a thickness of 50. Mu.m.
5. A substrate layer: polyimide film, 50 μm thick.
6. Release material layer: the PET film had a thickness of 50. Mu.m.
(II) preparation of adhesive tape
Referring to the schematic structural diagram of fig. 1, the method of preparing the adhesive tape includes the steps of:
(1) Mixing polyacrylic resin, an antistatic agent, an antioxidant and a curing agent according to a proportion to prepare a coating liquid of the functional coating, wherein the mixing temperature is 30 ℃, the mixing time is 30min, and the mixing speed is 300rpm;
(2) Mixing polymer of PEDOT/PSS, deionized water and isopropanol to obtain a coating liquid of an antistatic coating, and coating the coating liquid of the antistatic coating on one surface of a substrate layer; the thickness of the antistatic coating is about 2 μm;
(3) Coating the coating liquid of the functional coating obtained in the step (1) on the surface of the antistatic coating, and drying in an oven at 110 ℃; the thickness of the functional coating is about 50 μm;
(4) Attaching a release material layer to the surface of the functional coating;
(5) Mixing the raw materials of the protective coating, coating the mixture on the surface of the protective layer, and curing at a high temperature of 150 ℃ to form the protective coating; the protective coating has a thickness of about 35 μm;
(6) And (3) attaching the protective layer obtained in the step (5) to the other surface of the substrate layer, and finally preparing the adhesive tape.
Example 4 group
This set of examples is intended to illustrate the effect of ingredients in a functional coating.
This set of examples was performed as in example 1, except that the composition and proportions of the raw materials in the functional coating were varied, respectively, while keeping the total weight of the raw materials unchanged. Specifically:
example 4a: an equal amount of the polyacrylic resin obtained in preparation example 2 was substituted for the polyacrylic resin of preparation example 1;
Example 4b: an equal amount of the polyacrylic resin obtained in preparation example 3 was substituted for the polyacrylic resin of preparation example 1;
Example 4c: an equal amount of the polyacrylic resin obtained in preparation example 4 was substituted for the polyacrylic resin of preparation example 1;
Example 4d: an equal amount of the polyacrylic resin obtained in preparation example 5 was substituted for the polyacrylic resin of preparation example 1;
Finally, the adhesive tapes are respectively obtained.
Example 5 group
This set of examples is intended to illustrate the effect of the composition ratios in the functional coating.
This set of examples was performed as in example 1, except that the proportions of the raw materials in the functional coating were varied, respectively, but the total weight of the raw materials was kept unchanged. Specifically:
Example 5a: 90 parts by weight of polyacrylic resin; 0.5 parts by weight of an antistatic agent; an antioxidant, 6 parts by weight; 1 part by weight of a curing agent; 2.5 parts by weight of a solvent;
Example 5b: polyacrylic resin: 72 parts by weight; 3 parts by weight of an antistatic agent; an antioxidant, 1 part by weight; 5 parts by weight of a curing agent; solvent, 19 parts by weight.
Comparative example 1
Reference is made to example 1, except that the polyacrylic resin obtained in comparative preparation example 1 is replaced with the polyacrylic resin of preparation example 1 in equal amount.
Comparative example 2
Reference example 1 was made, except that no antistatic agent was added.
Comparative example 3
Reference example 1 was performed except that no antioxidant was added.
Comparative example 4
With reference to example 1, except that the total amount of functional coating raw materials was kept constant, the amounts of the components were adjusted: polyacrylic resin, 50 parts by weight; 5 parts by weight of an antistatic agent; 10 parts by weight of an antioxidant; 10 parts of curing agent; solvent, 25 parts by weight.
Test case
(1) Referring to the GB/T2792-2014 standard, the 180 DEG peel force of the adhesive tapes provided in examples and comparative examples, including the normal temperature peel force, 260 ℃ and the peel force after 5 minutes, are recorded in Table 1.
(2) The antistatic values of the tapes provided in the examples and comparative examples were tested using a Quick499D static tester and the results are recorded in table 1.
(3) The haze and transmittance of the tapes provided in examples and comparative examples were measured using a WGT-S transmittance/haze meter, and the results are recorded in table 1.
(4) The tensile strength of the tapes provided in the examples and comparative examples were tested with reference to the GB/T528-2009 standard.
(5) The transmittance properties at the 940mm and 525mm bands were tested using an LS182 solar film tester and the results are reported in Table 1.
TABLE 1
As can be seen from Table 1, the adhesive tape prepared by the invention has no residual adhesive in the normal test process, has stable viscosity, does not affect the electrostatic property of the product after high-temperature processing, and has excellent tensile strength and better transmittance after tearing.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is to be construed as including any modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (12)
1. A tape coating liquid composition, which is characterized by comprising polyacrylic resin, antistatic agent, antioxidant, curing agent and solvent; the content of the polyacrylic resin is 70-90 wt%, the content of the antistatic agent is 0.5-3 wt%, the content of the antioxidant is 1-6 wt%, the content of the curing agent is 1-5 wt%, and the content of the solvent is 5-20 wt%, based on the total weight of the composition;
the comonomer of the polyacrylic resin consists of a soft monomer, a hard monomer and a crosslinking monomer; the polyacrylic resin also comprises a first initiator and a second initiator;
Wherein, based on the total weight of the comonomers of the polyacrylic resin, the content of the soft monomer is 60 to 80 weight percent, the content of the hard monomer is 8 to 20 weight percent, and the content of the crosslinking monomer is 8 to 20 weight percent;
The soft monomer is butyl acrylate;
the hard monomer is a combination of vinyl acetate, methyl acrylate and methyl methacrylate, and the weight ratio of the vinyl acetate to the methyl acrylate to the methyl methacrylate in the hard monomer is 1: (1-3): (2-5);
the crosslinking monomer is acrylic acid;
The antistatic agent is lithium salt;
The antioxidant is hindered phenol antioxidant;
the curing agent is an epoxy curing agent.
2. The composition of claim 1, wherein the antistatic agent is selected from one or more of lithium difluorosulfonimide salt, lithium difluorooxalato borate, and lithium trifluoromethane sulfonate;
And/or the first initiator and the second initiator are independently selected from one of dibenzoyl peroxide or azobisisobutyronitrile;
and/or the curing agent is glycerol methacrylate.
3. A method for preparing the tape coating composition of claim 1 or 2, comprising the steps of:
(1) Under inert atmosphere and heating conditions, carrying out first contact on the soft monomer, the hard monomer and the crosslinking monomer in the adhesive tape coating liquid composition;
(2) Carrying out second contact on the material obtained in the step (1) and a first initiator, and carrying out third contact on the material after the second contact and the second initiator;
(3) And (3) carrying out fourth contact on the material obtained in the step (2) with an antistatic agent, an antioxidant and a curing agent.
4. A tape coating liquid comprising or prepared from the composition according to claim 1 or 2 or the composition obtained by the method according to claim 3.
5. An adhesive tape, characterized in that the adhesive tape comprises a substrate layer and a functional coating coated on the surface of the substrate layer; the functional coating is prepared from the adhesive tape coating liquid according to claim 4 or the composition according to claim 1 or 2.
6. The tape of claim 5, wherein an antistatic coating is further included between the substrate layer and the functional coating.
7. The tape of claim 6, wherein the antistatic coating comprises one or more of a polymer of PEDOT/PSS, a quaternary ammonium inner salt, and an aliphatic amine ethylene oxide adduct.
8. The tape of claim 5, wherein a surface of the substrate layer on a side remote from the functional coating is coated with a protective coating, the surface of the protective coating on a side remote from the substrate layer covering a protective layer.
9. The tape of claim 8, wherein the protective coating comprises one or more of a polysiloxane, MQ resin, vinyl silicone gum, catalyst, solvent, inhibitor, anchor, and cross-linking agent.
10. The tape of any of claims 5-9, wherein a surface of the functional coating on a side remote from the substrate layer is covered with a release material layer.
11. The tape of claim 10, wherein the substrate layer has a light transmittance of 15% or greater and a haze of 1% or less.
12. A method for producing the adhesive tape according to any one of claims 5 to 11, characterized in that the method comprises the following steps using the adhesive tape coating liquid composition according to claim 1 or 2 as a raw material:
(a) Preparing a coating liquid for obtaining a functional coating by taking the adhesive tape coating liquid composition as a raw material;
(b) Coating the surface of the substrate layer with a coating liquid of an antistatic coating;
(c) Coating the coating liquid of the functional coating obtained in the step (a) on the surface of the antistatic coating, and drying;
(d) Attaching the release material layer to the surface of the functional coating;
(e) And coating the protective coating on the surface of the protective layer, drying, and attaching the protective coating on the surface of the substrate layer.
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| CN114214009A (en) * | 2021-12-30 | 2022-03-22 | 襄阳三沃航天薄膜材料有限公司 | High-temperature-resistant antistatic pressure-sensitive adhesive and application thereof |
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| CN106397657A (en) * | 2016-09-10 | 2017-02-15 | 东莞市富印胶粘科技有限公司 | Optical double-side adhesive tape composition and method for preparing optical double-side adhesive tape by using same |
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| CN114214009A (en) * | 2021-12-30 | 2022-03-22 | 襄阳三沃航天薄膜材料有限公司 | High-temperature-resistant antistatic pressure-sensitive adhesive and application thereof |
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