CN109517533B - Non-substrate hot-melt double-sided adhesive tape for lithium battery and preparation method thereof - Google Patents
Non-substrate hot-melt double-sided adhesive tape for lithium battery and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
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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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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
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- 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
- C09J153/025—Vinyl aromatic monomers and conjugated dienes modified
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- 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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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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- 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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/33—Applications of adhesives in processes or use of adhesives in the form of films or foils for batteries or fuel cells
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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
- C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
- C09J2301/208—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer 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
- 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
- C09J2467/00—Presence of polyester
- C09J2467/005—Presence of polyester in the release coating
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Abstract
The invention relates to a substrate-free hot-melt double-sided adhesive tape for a lithium battery, which comprises a first pressure-sensitive adhesive layer, a second adhesive layer and a third double-sided release film which are sequentially arranged from top to bottom; the first pressure-sensitive adhesive layer has viscosity at normal temperature and is used for bonding the outer surface of a lithium battery cell, the second adhesive layer has low viscosity at normal temperature and is used for bonding the inner surface of an aluminum plastic film of a battery shell, and the third double-sided release film is used for preventing the back sides of the first pressure-sensitive adhesive layer and the second adhesive layer from being bonded when the double-sided adhesive tape is made into a roll shape; the total thickness of the base-material-free hot-melt double-sided adhesive tape for the lithium battery is 10-25 mu m, the material used in the adhesive tape provided by the invention does not react with electrolyte, good stability can be kept in the electrolyte, the lithium battery cell and the outer packaging aluminum-plastic film are bonded mainly by heating and pressurizing, and the bonding strength is high; meanwhile, the thickness of the adhesive tape is reduced to be below 25 mu m by the non-base material design, so that the energy density of the battery is improved, the stress is reduced, and the anti-falling performance of the battery is improved.
Description
Technical Field
The invention relates to a hot-melt double-sided adhesive tape for a lithium battery, in particular to a substrate-free hot-melt double-sided adhesive tape for the lithium battery and a preparation method thereof, and belongs to the technical field of adhesives.
Background
The lithium ion battery is a rechargeable battery, and is widely applied to the portable fields of mobile phones, notebooks and the like due to the advantages of high working voltage, small volume, light weight, high energy, no memory effect, small self-discharge, long cycle life and the like. In addition, because the lithium ion battery does not contain heavy metal chromium, compared with a nickel-chromium battery, the pollution to the environment is greatly reduced.
With the development of scientific technology, the requirements of various application fields on lithium batteries are higher and higher, especially the trend of high energy density and light weight, and the drop resistance of the lithium batteries determines the stability and safety of the lithium batteries. The prior solution is to fix the inner surfaces of a lithium battery cell and an outer packaging aluminum-plastic film by using a hot melt adhesive tape, and the Chinese invention patent CN104610883 discloses a rubber type pressure sensitive adhesive which takes polyethylene terephthalate as a base material and is coated with synthetic rubber styrene-isoprene-styrene copolymer (SI S), low molecular weight polyolefin rubber and petroleum resin, and the adhesive tape is prepared by adopting initiator crosslinking and has the following defects: (1) the overall thickness of the adhesive tape is relatively thick, and the energy density of the lithium battery is influenced to a certain extent; (2) polyethylene terephthalate (PET) is used as a base material of the adhesive tape, after the adhesive tape is bonded at a certain temperature and under a certain pressure, the difference of the components of the adhesives on the two sides is large, so that a stress effect can be generated, burrs are easily generated during cutting of the PET base material, the risk of puncturing a diaphragm is realized, and potential influences are exerted on the performance and the safety of a battery.
Aiming at the demand of the lithium battery market for thinner and thinner hot melt adhesive tapes, a thinner adhesive tape product with smaller stress during use needs to be provided, meanwhile, the adhesiveness of the adhesive tape product can be ensured, and the electrical property of the lithium battery is not influenced.
Disclosure of Invention
The invention provides a substrate-free hot-melt double-sided adhesive tape for a lithium battery and a preparation method thereof, aiming at the defects of the existing hot-melt adhesive tape for the lithium battery.
The technical scheme of the invention is as follows:
a no substrate hot melt double sided tape for lithium cell which characterized in that: the adhesive comprises a first pressure-sensitive adhesive layer, a second adhesive layer and a third double-sided release film which are sequentially arranged from top to bottom; the first pressure-sensitive adhesive layer has viscosity at normal temperature and is used for bonding the outer surface of a lithium battery cell, the second adhesive layer has low viscosity at normal temperature and is used for bonding the inner surface of an aluminum plastic film of a battery shell, and the third double-sided release film is used for preventing the back sides of the first pressure-sensitive adhesive layer and the second adhesive layer from being bonded when the double-sided adhesive tape is made into a roll shape;
the thickness of the first pressure-sensitive adhesive layer is 7-15 mu m, and the first pressure-sensitive adhesive layer comprises the following components in parts by weight:
the thickness of the second adhesive layer is 3-10 mu m, and the second adhesive layer comprises the following components in parts by weight:
wherein the hydrogenated petroleum resin I is a hydrogenated petroleum resin with a softening point of 90-125 ℃, and the hydrogenated petroleum resin II is a hydrogenated petroleum resin with a softening point of 125-140 ℃.
Further, the hydrogenated styrene block copolymer is one or a combination of a hydrogenated styrene-polyisoprene-styrene block copolymer (SEPS) and a hydrogenated styrene-polybutadiene-styrene block copolymer (SEBS), wherein the styrene content of the hydrogenated styrene-polyisoprene-styrene block copolymer (SEPS) is preferably 20-30%, and the styrene content of the hydrogenated styrene-polybutadiene-styrene block copolymer (SEBS) is preferably 30-40%, and the hydrogenated styrene-polybutadiene-styrene block copolymer (SEBS) is commercially available.
Further, the amorphous alpha-olefin copolymer is preferably a copolymer having a softening point of 90-160 ℃ and a melt viscosity of 3000-10000 mPas at 190 ℃, and the amorphous alpha-olefin copolymer (APAO) has the characteristics of low VOC, low odor, excellent toughness and elasticity, good elongation and bendability and the like.
Further, the antioxidant is Irganox1010 antioxidant.
The substrate-free hot-melt double-sided adhesive tape provided by the invention has the beneficial effects that:
(1) the total thickness is 10-25 mu m, the thickness is thin, and the energy density of the lithium battery can be improved to the greatest extent;
(2) no base material is used, and the two adhesive layers are similar in composition, so that the stress generated after the adhesive tape is adhered can be reduced, burrs generated after the base material is cut can not be generated, the risk of puncturing the diaphragm is avoided, and the anti-falling performance of the battery is further improved;
(3) the material used by the adhesive tape does not react with the electrolyte, does not influence the service life of the battery, mainly bonds the battery core and the outer packaging aluminum-plastic film by heating and pressurizing, and has strong bonding force on the inner surfaces of the battery core and the outer housing aluminum-plastic film.
The preparation method of the substrate-free hot-melt double-sided adhesive tape for the lithium battery comprises the following steps:
1) weighing raw materials of the first pressure-sensitive adhesive layer and the second adhesive layer in parts by weight, respectively dissolving the raw materials with a solvent, and preparing a solution of the first pressure-sensitive adhesive layer and the second adhesive layer with the solid content of 20-30 wt%;
2) adding the solution of the second adhesive layer into a transfer coating machine, simultaneously placing the double-sided release film in an unwinding unit of the transfer coating machine, coating the second adhesive layer on one side of the double-sided release film, drying the double-sided release film through a drying tunnel, setting the temperature of the drying tunnel to be 80-110 ℃, drying for 3-5 min, and then winding to obtain a semi-finished product;
3) adding the solution of the first pressure-sensitive adhesive layer into a transfer coating machine, simultaneously putting the process film into a first unreeling unit of the transfer coating machine, coating the first pressure-sensitive adhesive layer on one side of the process film, and then drying the process film through a drying tunnel, wherein the temperature of the drying tunnel is set to be 80-110 ℃, and drying the process film for 3-5 min;
4) and finally, putting the semi-finished product rolled in the step 2) into a second unwinding unit, compounding the semi-finished product with the first pressure-sensitive adhesive layer coated on the process film obtained in the step 3) at the temperature of 80-100 ℃ and the pressure of 0.5-0.6 MPa, and rolling to obtain a finished product.
Drawings
FIG. 1 is a schematic view of the overall structure of the non-substrate hot-melt double-sided tape provided by the present invention;
in fig. 1, a first pressure-sensitive adhesive layer; 2. a second adhesive layer; 3. and a third double-sided release film.
Detailed Description
The principles and features of this invention are described below in conjunction with examples, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
Example 1:
a non-base material hot-melt double-sided adhesive tape for a lithium battery comprises a first pressure-sensitive adhesive layer, a second adhesive layer and a third double-sided release film which are sequentially arranged from top to bottom;
the coating thickness of the first pressure-sensitive adhesive layer is 15 micrometers, and the first pressure-sensitive adhesive layer comprises the following components in parts by weight:
45 parts of hydrogenated styrene block copolymer SEBS G1654(Kraton), 5 parts of amorphous alpha-olefin copolymer Vestoplast408(Evonik), 49 parts of hydrogenated petroleum resin ARKON P90(Arakawa) and 10101 parts of antioxidant Irganox;
the coating thickness of the second adhesive layer is 10 micrometers, and the second adhesive layer comprises the following components in parts by weight:
40 parts of hydrogenated styrene block copolymer SEBS G1654(Kraton), 40 parts of amorphous alpha-olefin copolymer Vestoplast408(Evonik), 19 parts of hydrogenated petroleum resin ARKON P125(Arakawa) and 10101 parts of antioxidant Irganox;
the third double-sided release film is a double-sided PET release film with the thickness of 50 mu m.
Example 2:
a non-base material hot-melt double-sided adhesive tape for a lithium battery comprises a first pressure-sensitive adhesive layer, a second adhesive layer and a third double-sided release film which are sequentially arranged from top to bottom;
the coating thickness of the first pressure-sensitive adhesive layer is 12 micrometers, and the first pressure-sensitive adhesive layer comprises the following components in parts by weight:
47 parts of hydrogenated styrene block copolymer SEBS G1650(Kraton), 5 parts of amorphous alpha-olefin copolymer Vestoplast 308(Evonik), 47 parts of hydrogenated petroleum resin ARKON P100(Arakawa) and 10101 parts of antioxidant Irganox;
the coating thickness of the second adhesive layer is 8 micrometers, and the second adhesive layer comprises the following components in parts by weight:
42 parts of hydrogenated styrene block copolymer SEBS G1650(Kraton), 42 parts of amorphous alpha-olefin copolymer Vestoplast 308(Evonik), 15 parts of hydrogenated petroleum resin ARKON P125(Arakawa) and 10101 parts of antioxidant Irganox;
the third double-sided release film is a double-sided PET release film with the thickness of 50 mu m.
Example 3:
a non-base material hot-melt double-sided adhesive tape for a lithium battery comprises a first pressure-sensitive adhesive layer, a second adhesive layer and a third double-sided release film which are sequentially arranged from top to bottom;
the coating thickness of the first pressure-sensitive adhesive layer is 10 micrometers, and the first pressure-sensitive adhesive layer comprises the following components in parts by weight:
45 parts of hydrogenated styrene block copolymer SEPS G1657(Kraton), 15 parts of amorphous alpha-olefin copolymer Vestoplast 508(Evonik), 39 parts of hydrogenated petroleum resin ARKON P115(Arakawa) and 10761 parts of antioxidant Irganox;
the coating thickness of the second adhesive layer is 5 micrometers, and the second adhesive layer comprises the following components in parts by weight:
42 parts of hydrogenated styrene block copolymer SEPS G1657(Kraton), 42 parts of amorphous alpha-olefin copolymer Vestoplast 508(Evonik), 15 parts of hydrogenated petroleum resin ARKON P140(Arakawa) and 10761 parts of antioxidant Irganox;
the third double-sided release film is a double-sided PET release film with the thickness of 50 mu m.
Example 4:
a non-base material hot-melt double-sided adhesive tape for a lithium battery comprises a first pressure-sensitive adhesive layer, a second adhesive layer and a third double-sided release film which are sequentially arranged from top to bottom;
the coating thickness of the first pressure-sensitive adhesive layer is 7 micrometers, and the first pressure-sensitive adhesive layer comprises the following components in parts by weight:
40 parts of hydrogenated styrene block copolymer SEPS G1730(Kraton), 10 parts of amorphous alpha-olefin copolymer Vestoplast 608(Evonik), 49 parts of hydrogenated petroleum resin ARKON P125(Arakawa) and 1 part of antioxidant DNP;
the coating thickness of the second adhesive layer is 3 micrometers, and the second adhesive layer comprises the following components in parts by weight:
35 parts of hydrogenated styrene block copolymer SEPS G1730(Kraton), 45 parts of amorphous alpha-olefin copolymer Vestoplast 508(Evonik), 19 parts of hydrogenated petroleum resin ARKON P140(Arakawa) and 10101 parts of antioxidant Irganox;
the third double-sided release film is a double-sided PET release film with the thickness of 50 mu m.
The preparation method of the non-base material hot-melt double-sided adhesive tape of the embodiment 1-4 comprises the following steps:
1) weighing raw materials of the first pressure-sensitive adhesive layer and the second adhesive layer in parts by weight, respectively dissolving the raw materials with a solvent, and preparing a solution of the first pressure-sensitive adhesive layer and the second adhesive layer with the solid content of 20-30 wt%;
2) adding the solution of the second adhesive layer into a transfer coating machine, simultaneously placing the double-sided release film in an unwinding unit of the transfer coating machine, coating the second adhesive layer on one side of the double-sided release film, drying the double-sided release film through a drying tunnel, setting the temperature of the drying tunnel to be 80-110 ℃, drying for 3-5 min, and then winding to obtain a semi-finished product;
3) adding the solution of the first pressure-sensitive adhesive layer into a transfer coating machine, simultaneously putting the process film into a first unreeling unit of the transfer coating machine, coating the first pressure-sensitive adhesive layer on one side of the process film, and then drying the process film through a drying tunnel, wherein the temperature of the drying tunnel is set to be 80-110 ℃, and drying the process film for 3-5 min;
4) and finally, putting the semi-finished product rolled in the step 2) into a second unwinding unit, compounding the semi-finished product with the first pressure-sensitive adhesive layer coated on the process film obtained in the step 3) at the temperature of 80-100 ℃ and the pressure of 0.5-0.6 MPa, and rolling to obtain a finished product.
Comparative example:
the product in Chinese invention patent CN104610883 is taken as a comparative example, the adhesive tape is sequentially provided with a first sealing hot melt pressure sensitive adhesive layer, a second sealing hot melt pressure sensitive adhesive layer, a normal temperature non-viscous sealing adhesive layer and a substrate film from top to bottom, the thickness of the first sealing hot melt pressure sensitive adhesive layer is 20 μm, and the adhesive tape comprises the following raw materials by mass percent: 20 parts of SISI rubber elastomer I, 15 parts of SIS rubber elastomer II, 15 parts of polypentene rubber, 15 parts of polyethylene rubber, 34.5 parts of hydrogenated petroleum resin and 0.5 part of benzoyl peroxide. The thickness of the second sealing hot melt pressure sensitive adhesive layer is 20 μm, and the second sealing hot melt pressure sensitive adhesive layer comprises the following raw materials in percentage by mass: 20 parts of SISI rubber elastomer I, 15 parts of SIS rubber elastomer II, 15 parts of polypentene rubber, 15 parts of polyethylene rubber, 34.5 parts of hydrogenated petroleum resin and 0.5 part of benzoyl peroxide. The thickness of the normal-temperature non-adhesive sealing adhesive layer is 20 mu m, and the normal-temperature non-adhesive sealing adhesive layer comprises the following raw materials in percentage by mass: 15 parts of polystyrene, 15 parts of polybutadiene, 10 parts of SBS, 8 parts of hydrogenated petroleum resin, 1.5 parts of calcium carbonate, 50 parts of toluene, 0.5 part of benzoyl peroxide and 10 mu mPE of substrate film.
The adhesive tapes obtained in examples 1 to 4 and the products of comparative examples were tested for their properties by the following methods:
1) testing the peel strength of the pressure-sensitive adhesive tape according to the method described in the national standard GB/T2792-2014;
2) and (3) testing the peel strength after hot pressing: adhering an aluminum foil to the first pressure-sensitive adhesive layer, adhering cast polypropylene (cpp layer) in the aluminum-plastic film to the second adhesive layer, hot-pressing for more than 60min at 80-90 ℃ under the pressure of more than 10kg, cooling to normal temperature, and then testing the peel strength according to the method of the national standard GB/T2792-;
3) and (3) testing the peeling strength of the hot-pressed soaking electrolyte: according to 2), a test sample piece is soaked in the electrolyte of the lithium battery, and the mass ratio of the electrolyte is as follows: the mass ratio of EC/PC/DEC/EP 30/10/30/301M LiPF6 lithium salt was calculated as 12.5%. Cooling to normal temperature for more than 6h at 80-90 ℃, and then testing the peel strength according to the method of national standard GB/T2792-2014;
4) and (3) testing the soaking color of the electrolyte: soaking the electrolyte for more than 6 hours at the temperature of 80-90 ℃ (the mass ratio of the adhesive tape to the electrolyte is 1: 20-100) and observing the color change of the electrolyte. The results are shown in table 1:
table 1: performance test data of the tapes obtained in examples 1 to 4 and comparative examples
As can be seen from the results shown in Table 1, the double-sided tape for the lithium battery provided by the invention has good adhesion performance to aluminum and CPP, resists electrolyte corrosion, and does not react with electrolyte chemically.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A no substrate hot melt double sided tape for lithium cell which characterized in that: the adhesive comprises a first pressure-sensitive adhesive layer, a second adhesive layer and a third double-sided release film which are sequentially arranged from top to bottom;
the thickness of the first pressure-sensitive adhesive layer is 7-15 mu m, and the first pressure-sensitive adhesive layer comprises the following components in parts by weight:
the thickness of the second adhesive layer is 3-10 mu m, and the second adhesive layer comprises the following components in parts by weight:
wherein the hydrogenated petroleum resin I is a hydrogenated petroleum resin with a softening point of 90-125 ℃, and the hydrogenated petroleum resin II is a hydrogenated petroleum resin with a softening point of 125-140 ℃.
2. The non-substrate hot-melt double-sided tape for the lithium battery as claimed in claim 1, wherein the hydrogenated styrene block copolymer is one or a combination of hydrogenated styrene-polyisoprene-styrene block copolymer (SEPS) and hydrogenated styrene-polybutadiene-styrene block copolymer (SEBS).
3. The substrate-free hot-melt double-sided tape for a lithium battery as claimed in claim 2, wherein the hydrogenated styrene-polyisoprene-styrene block copolymer (SEPS) has a styrene content of 20 to 30 wt%, and the hydrogenated styrene-polybutadiene-styrene block copolymer (SEBS) has a styrene content of 30 to 40 wt%.
4. The non-substrate hot-melt double-sided tape for a lithium battery according to claim 1, wherein the amorphous α -olefin copolymer has a softening point of 90 to 160 ℃ and a melt viscosity of 3000 to 10000mPas at 190 ℃.
5. The non-base material hot-melt double-sided tape for a lithium battery as claimed in claim 1, wherein the antioxidant is Irganox 1010.
6. The method for preparing the substrate-free hot-melt double-sided adhesive tape for the lithium battery as claimed in any one of claims 1 to 5, comprising the steps of:
1) weighing raw materials of the first pressure-sensitive adhesive layer and the second adhesive layer in parts by weight, respectively dissolving the raw materials with a solvent, and preparing a solution of the first pressure-sensitive adhesive layer and the second adhesive layer with the solid content of 20-30 wt%;
2) adding the solution of the second adhesive layer into a transfer coating machine, simultaneously placing the double-sided release film in an unwinding unit of the transfer coating machine, coating the second adhesive layer on one side of the double-sided release film, drying the double-sided release film through a drying tunnel, setting the temperature of the drying tunnel to be 80-110 ℃, drying for 3-5 min, and then winding to obtain a semi-finished product;
3) adding the solution of the first pressure-sensitive adhesive layer into a transfer coating machine, simultaneously putting the process film into a first unreeling unit of the transfer coating machine, coating the first pressure-sensitive adhesive layer on one side of the process film, and then drying the process film through a drying tunnel, wherein the temperature of the drying tunnel is set to be 80-110 ℃, and drying the process film for 3-5 min;
4) and finally, putting the semi-finished product rolled in the step 2) into a second unwinding unit, compounding the semi-finished product with the first pressure-sensitive adhesive layer coated on the process film obtained in the step 3) at the temperature of 80-100 ℃ and the pressure of 0.5-0.6 MPa, and rolling to obtain a finished product.
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| CN110540818B (en) * | 2019-09-18 | 2021-12-24 | 杭州之江新材料有限公司 | Non-reactive polyolefin hot melt adhesive, preparation method and application thereof |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786896A (en) * | 2011-05-17 | 2012-11-21 | 横滨橡胶株式会社 | Reaction type hot melting sealing agent composition for solar cell |
| KR101211155B1 (en) * | 2012-08-27 | 2012-12-11 | 주식회사 폴리사이언텍 | Packaging materials for secondary battery |
| CN104031586A (en) * | 2014-05-29 | 2014-09-10 | 浙江固特热熔胶有限公司 | High/low-temperature general-purpose hot-melt pressure-sensitive adhesive and preparation method thereof |
| CN104559823A (en) * | 2014-12-30 | 2015-04-29 | 东莞市澳中电子材料有限公司 | Single-surface adhesive tape for lithium battery and preparation method for single-surface adhesive tape |
| CN105400440A (en) * | 2015-11-27 | 2016-03-16 | 宁波科莱恩新材料科技有限公司 | Transfer tape |
| CN105950043A (en) * | 2016-05-16 | 2016-09-21 | 东莞市澳中电子材料有限公司 | Adhesive tape capable of improving anti-dropping capacity of battery and manufacturing method of adhesive tape |
| CN106520017A (en) * | 2016-10-20 | 2017-03-22 | 重庆中科力泰高分子材料股份有限公司 | A mono-component moisture-curing polyolefin hot-melt adhesive and a preparing method thereof |
| CN106590462A (en) * | 2016-12-30 | 2017-04-26 | 芜湖研高粘胶新材料有限公司 | Base-material-free double sticky tape |
| CN108084916A (en) * | 2017-11-27 | 2018-05-29 | 烟台德邦科技有限公司 | A kind of lithium battery double faced adhesive tape |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5305595B2 (en) * | 2007-01-10 | 2013-10-02 | 日東電工株式会社 | Thermal adhesive sheet |
-
2018
- 2018-10-26 CN CN201811257182.5A patent/CN109517533B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786896A (en) * | 2011-05-17 | 2012-11-21 | 横滨橡胶株式会社 | Reaction type hot melting sealing agent composition for solar cell |
| KR101211155B1 (en) * | 2012-08-27 | 2012-12-11 | 주식회사 폴리사이언텍 | Packaging materials for secondary battery |
| CN104031586A (en) * | 2014-05-29 | 2014-09-10 | 浙江固特热熔胶有限公司 | High/low-temperature general-purpose hot-melt pressure-sensitive adhesive and preparation method thereof |
| CN104559823A (en) * | 2014-12-30 | 2015-04-29 | 东莞市澳中电子材料有限公司 | Single-surface adhesive tape for lithium battery and preparation method for single-surface adhesive tape |
| CN105400440A (en) * | 2015-11-27 | 2016-03-16 | 宁波科莱恩新材料科技有限公司 | Transfer tape |
| CN105950043A (en) * | 2016-05-16 | 2016-09-21 | 东莞市澳中电子材料有限公司 | Adhesive tape capable of improving anti-dropping capacity of battery and manufacturing method of adhesive tape |
| CN106520017A (en) * | 2016-10-20 | 2017-03-22 | 重庆中科力泰高分子材料股份有限公司 | A mono-component moisture-curing polyolefin hot-melt adhesive and a preparing method thereof |
| CN106590462A (en) * | 2016-12-30 | 2017-04-26 | 芜湖研高粘胶新材料有限公司 | Base-material-free double sticky tape |
| CN108084916A (en) * | 2017-11-27 | 2018-05-29 | 烟台德邦科技有限公司 | A kind of lithium battery double faced adhesive tape |
Non-Patent Citations (1)
| Title |
|---|
| 和氏璧化工产品在胶粘剂中的应用;吴丽;《化工新型材料》;20141130;第42卷(第11期);235 * |
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