WO2022166518A1 - Composition adhésive, matériau d'emballage pour batterie au lithium et batterie au lithium - Google Patents

Composition adhésive, matériau d'emballage pour batterie au lithium et batterie au lithium Download PDF

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Publication number
WO2022166518A1
WO2022166518A1 PCT/CN2022/070505 CN2022070505W WO2022166518A1 WO 2022166518 A1 WO2022166518 A1 WO 2022166518A1 CN 2022070505 W CN2022070505 W CN 2022070505W WO 2022166518 A1 WO2022166518 A1 WO 2022166518A1
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mass
adhesive composition
rubber
adhesive
composition according
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PCT/CN2022/070505
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English (en)
Chinese (zh)
Inventor
肖朝东
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厦门内加湖新材料科技有限公司
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Publication of WO2022166518A1 publication Critical patent/WO2022166518A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—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
    • C09J123/10—Homopolymers or copolymers of propene
    • C09J123/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • 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
    • C09J123/04—Homopolymers or copolymers of ethene
    • C09J123/06—Polyethene
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to an adhesive, furthermore, to an adhesive for lithium batteries.
  • the present invention also relates to a lithium battery packaging material and a lithium battery using the binder.
  • Polypropylene materials have high temperature resistance, stable chemical properties, and good mechanical strength. They are suitable for adhesives with long service life and high application environment temperature. At the same time, polypropylene has good water vapor barrier properties and mechanical properties. , but the barrier performance to oxygen is relatively poor. Polypropylene is often combined with metal, nylon, or EVOH into composites to meet both barrier and strength requirements.
  • Adhesives used in dry lamination are usually based on polyurethane resin matrix. Polyurethane will hydrolyze under acidic or alkaline conditions, resulting in degradation and adhesive failure. Polypropylene-based adhesives are generally resistant to hydrolysis but have low adhesion. At present, the adhesion of propylene-based adhesives to polar substrates reported in the literature is relatively low, and it is easy to occur with polar substrates under the action of stress and media. The interface between the materials is detached.
  • the adhesive Under certain circumstances, such as lithium batteries, where the chemical environment is complex, the adhesive will inevitably come into contact with the electrolyte and thus be corroded. However, it is difficult to improve the adhesion without dry compounding with polyurethane or components of similar properties. That is, it is difficult for the adhesives in the prior art to achieve both adhesive force and adhesive reliability.
  • Patent Document 1 (US10,777,785) laminates olefin-based components, and adds epoxy and isocyanate-based curing agents, to some extent, avoids the defects of adhesion reliability when laminating with polyurethane, but adhesion There is a lack of strength.
  • Patent Document 2 (US7,485,393), some embodiments use urethane dry lamination adhesives, which may reduce the bonding reliability, and some embodiments use modified polypropylene for the inner adhesive layer, However, there is still room for improvement in the adhesive of this formulation.
  • Patent Document 3 (US10,703,944) uses acid-modified polyolefin in the inner layer of the adhesive
  • Patent Document 4 (US10,766,229) uses a large amount of polyurethane for the adhesive
  • Patent Document 5 (US7,041,380) is based on Adhesive layer of polypropylene.
  • An object of the present invention is to provide an adhesive having both excellent adhesive force and adhesive reliability. Another object of the present invention is to provide a lithium battery packaging material and a lithium battery using the above-mentioned binder.
  • the inventors of the present invention have found that by combining conventional non-polar (or less polar) adhesive components such as polyethylene, polypropylene and elastomers, and adding rubber elastomers thereto, adhesion can be greatly improved properties, and thus complete the present invention.
  • the present invention includes an adhesive composition comprising the following components (A) to (D):
  • the components (A) and (B) are modified and/or unmodified compounds.
  • ingredient (E) nano-inorganic particles are also added.
  • the nano-inorganic particles are fumed silica, alumina trioxide or talc, the content of the nano-inorganic particles is 3-15% by mass; the content of the rubber elastomer is more than 15% by mass .
  • the rubber elastomer is any one or more of the following (a) to (d):
  • the rubber elastomer is an elastomer obtained by dispersing a rubber component in a styrene-based compound.
  • the components (A) to (D) include:
  • the modification is acid or acid anhydride modification.
  • the adhesion to aluminum in the 180° peel test is above 400N/25mm.
  • the present invention also includes a packaging material for lithium batteries, comprising the adhesive composition of the present invention.
  • the present invention also includes a lithium battery containing the packaging material of the present invention.
  • the adhesive of the present invention can bring excellent adhesion alone without adding polar components or dry compounding with other polar components (such as polyurethane, etc.), so it can improve the adhesion (such as aluminum 400N/25mm or more adhesion) at the same time, good chemical resistance is obtained, that is, high adhesion reliability.
  • the binder of the present invention is particularly suitable for use as a packaging material for a lithium battery, and further, a lithium battery with excellent durability can be obtained.
  • % of each component means “mass %” unless otherwise specified.
  • modification refers to acid or acid anhydride modification.
  • the adhesive of the present invention includes the following components (A) to (D): (A) a polyethylene-based compound, (B) a polypropylene-based compound, (C) a polyolefin elastomer, and (D) a rubber elastomer.
  • the polyethylene-based compound used in the present invention is preferably a modified polyethylene-based compound, more preferably an acid-modified or acid-anhydride-modified polyethylene-based compound. Modified polyethylene-based compounds and unmodified polyethylene-based compounds may also be used in combination.
  • the proportion of the modified polyethylene compound is preferably more than 50% by mass, more preferably more than 60% by mass, still more preferably more than 70% by mass, Most preferably it exceeds 80 mass %, for example, 90 mass % or 95 mass %, and may be 100 mass %.
  • modification can improve adhesion, although it also depends on the specific ratio of ingredients used and the need for other functions.
  • the acid substance used as the graft is not particularly limited, as long as it is an acid and an organic acid substance that can be generally used in the graft reaction for modification, for example, an organic acid or an organic acid anhydride.
  • organic acid or organic acid anhydride used for modification ⁇ , ⁇ -unsaturated carboxylic acid or acid anhydride which is usually small molecule can be mentioned, including but not limited to: acrylic acid, methacrylic acid, acrylate, methacrylate, Maleic acid, maleic anhydride, itaconic acid, itaconic anhydride, and mixtures of two or more of them.
  • Acrylic acid and maleic anhydride are preferred. These acidic substances are easier to obtain and have a higher grafting rate.
  • the addition amount of the acid or acid anhydride used for modification is generally less than 20% by weight, preferably less than 10% by weight, more preferably less than 5% by weight of the total weight of the modified polyethylene compound; if The amount of carboxyl groups in the modified polyethylene compound is preferably 0.1 to 5% by weight, more preferably 0.2 to 2% by weight, and particularly preferably 0.4 to 1% by weight, based on the carboxyl groups contained in the acid.
  • the polyethylene compound in the present invention can be used as one of the constituent components of the adhesive base resin (combined with the polypropylene matrix), and its content is not particularly limited. % by mass or more, more preferably 6% by mass or more, still more preferably 10% by mass or more, and most preferably 15% by mass or more.
  • component (A) in addition to the polyethylene-based compound, other components may be used in combination to improve the adhesiveness.
  • the upper limit of the polyethylene-based compound is preferably 50% by mass or less, more preferably 40% by mass or less, still more preferably 30% by mass or less, and most preferably 25% by mass or less, for example, 20% by mass.
  • the polyethylene-based compound in the present invention may be an ethylene homopolymer or a copolymer of ethylene and other components.
  • polyethylene examples include high-density polyethylene, medium-density polyethylene, low-density polyethylene, linear low-density polyethylene, and the like.
  • a copolymer as a component that can be copolymerized with ethylene, ⁇ -olefins, etc., such as styrene, propylene, 1-butene, 1-hexene, 1-octene, 4-methyl-1- Pentene, norbornene, 1-decene, 1,5-hexadiene, and combinations thereof.
  • the ethylene copolymer preferably has an ethylene unit content of 40% by mass or more, more preferably 50% by mass or more, still more preferably 70% by mass or more, and most preferably 80% by mass or more, such as 90% by mass or 95% by mass.
  • the polyethylene-based compound used in the present invention may be synthesized by a known method, or a commercial item may be used.
  • the polypropylene-based compound used in the present invention may be a modified or unmodified polypropylene-based compound, and it is preferable to use both in combination from the viewpoint of both the adhesiveness and the adhesiveness reliability.
  • modified polypropylene-based compound acid-modified or acid-anhydride-modified polypropylene-based compounds are preferred.
  • the ratio (modified/unmodified) is generally 1/10 to 10/1, preferably 1/5 to 5/1, more preferably 1/3 to 3/1, and most preferably 1/2. ⁇ 2/1, for example, 1.5/1 to 1/1.5 or 1.2/1 to 1/1.2, or 1:1.
  • the modified product can be slightly more than the unmodified product, such as 1.5/1 or 1.2/1, in this case, the adhesion and adhesion reliability can be better balanced.
  • the content of the polypropylene compound in the present invention, as the basic component of the adhesive, is not particularly limited, and is generally more than 5% by mass, more preferably more than 10% by mass, further preferably more than 15% by mass, and most preferably more than 20% by mass;
  • component (B) in addition to the polypropylene-based compound, various other components may be used in combination to improve the adhesiveness.
  • the upper limit of the polypropylene-based compound is preferably 80% by mass or less, more preferably 70% by mass or less, still more preferably 60% by mass or less, and most preferably 55% by mass or less, for example, 40% by mass or 50% by mass.
  • the polypropylene-based compound in the present invention may be a propylene homopolymer or a copolymer of propylene and other components.
  • any one or more selected from homopolypropylene, copolymerized polypropylene, and branched polypropylene may be used.
  • examples of components that can be copolymerized with ethylene include ⁇ -olefins, such as styrene, ethylene, 1-butene, 1-hexene, 1-octene, and 4-methyl-1-pentene. ene, norbornene, 1-decene, 1,5-hexadiene, and combinations thereof.
  • the propylene copolymer preferably has a propylene unit content of 40 mass% or more, more preferably 50 mass% or more, further preferably 70 mass% or more, most preferably 80 mass% or more, for example 90 mass% or 95 mass%.
  • the polypropylene-based compound used in the present invention may be synthesized by a known method, or a commercial item may be used.
  • a polyolefin elastomer is also included to improve adhesion.
  • the polyolefin elastomer is used as the base component of the adhesive, and the content is not particularly limited. Based on the total amount of the binder as 100% by mass, it is generally 1% by mass or more, more preferably 5% by mass or more, further preferably 10% by mass or more, such as 12% by mass or 15% by mass; but considering the margin of polyolefin content
  • the upper limit of the polyolefin elastomer content is preferably 40% by mass or less, more preferably 30% by mass or less, and further preferably 20% by mass or less, such as 16% by mass or 18% by mass. quality%.
  • the polyolefin elastomer used in the present invention may be synthesized by a known method, or a commercial item may be used.
  • ethylene- ⁇ -olefin copolymers common ethylene- ⁇ -olefin copolymers, propylene- ⁇ -olefin copolymers, butene homopolymers and copolymers, metallocene-catalyzed propylene- ⁇ -olefin copolymers, ethylene-octene copolymers, ethylene -2-Butene copolymer, ethylene-hexene copolymer, etc.
  • ⁇ -olefins here include 1-butene, 1-hexene, 1-octene, 4-methyl-1-pentene, norbornene, 1-decene, 1,5-hexadiene, and the like .
  • the present inventors found that the adhesiveness of polyolefin-based, especially polypropylene/polyethylene-based adhesives can be greatly improved by adding a rubber elastomer without impairing the adhesiveness reliability.
  • the rubber elastic body that can be used in the present invention may be, for example, a saturated rubber elastic body or an unsaturated rubber elastic body.
  • natural rubber isoprene rubber, polybutadiene rubber, styrene-butadiene rubber, nitrile-butadiene rubber, neoprene rubber, butyl rubber, halogenated butyl rubber (such as chlorobutyl rubber, bromobutyl rubber, etc.) base rubber), ethylene propylene diene rubber and ethylene propylene diene propylene rubber as the elastomer of the rubber component.
  • natural rubber isoprene rubber, polybutadiene rubber, styrene-butadiene rubber, nitrile-butadiene rubber, neoprene rubber, butyl rubber, halogenated butyl rubber (such as chlorobutyl rubber, bromobutyl rubber, etc.) base rubber), ethylene propylene diene rubber and
  • the content of the rubber elastomer in the present invention is not particularly limited. Generally, it is 2 mass % or more, more preferably 5 mass % or more, further preferably 8 mass % or more, and most preferably 10 mass % or more, for example, 15 mass %.
  • the upper limit of the content of rubber elastomer is preferably 60 mass % or less, more preferably 50 mass % or less, and further preferably 40 mass % % or less, most preferably 30 mass % or less, such as 20 mass % or 25 mass %.
  • the rubber elastomer of the present invention preferably contains styrene, such as general-purpose styrene, high molecular weight styrene, heat-resistant styrene, high-fluidity styrene, high-impact styrene, and the like.
  • styrene is used as the matrix or one of the copolymerization (eg graft copolymerization or block copolymerization) components.
  • the rubber elastic body of the present invention is preferably used in such a manner that a rubber component is dispersed in a matrix.
  • the dispersion method is not particularly limited as long as the rubber component can be dispersed in the matrix. It is preferable to select a suitable rubber component and a matrix for mixing, so that the rubber component has a sea-island structure.
  • rubber particles may be added to the matrix for mixing, or the rubber component may be melt-mixed with the matrix, or the rubber component may be added to the elastomer by copolymerization (eg, graft copolymerization or block copolymerization).
  • copolymerization eg, graft copolymerization or block copolymerization
  • the rubber elastic body used in the present invention may be synthesized by a known method, or a commercial item may be used.
  • the adhesive composition of the present invention may further contain component (E), ie, nano-inorganic particles, as necessary.
  • component (E) ie, nano-inorganic particles
  • the addition of nano inorganic particles can further improve the adhesiveness.
  • Inorganic nanoparticles are not particularly limited, for example, can be fumed silica, alumina or talc, nano metal oxides, such as nano-TiO 2 , Al 2 O 3 , ZrO 2 , etc., non-metal oxides, such as nano-SiO 2 , Metal hydroxides, such as nano-Co(OH) 2 , La(OH) 3 , etc., and metal sulfides such as silver sulfide, tin sulfide, nano-nitrides, etc. Preference is given to fumed silica, alumina trioxide or talc.
  • fumed silica As fumed silica, it generally has the properties of an average particle size of 5-15nm, a specific surface area of 2-200m 2 /g, and a bulk density of 20-150g/l, such as EVONIK Aerosil 200, Aerosil 300, Aerosil 380, etc.
  • the lower limit of the content of the nano-inorganic particles can be 1%, 2%, 5% or 10% by mass, and the upper limit can be 30%, 25%, 20 mass %, 15 mass %.
  • the adhesive of the present invention may further contain functional additives such as antioxidants, stabilizers, initiators, modifiers (modifiers other than the above-mentioned acids).
  • functional additives such as antioxidants, stabilizers, initiators, modifiers (modifiers other than the above-mentioned acids).
  • These additives can be selected from known additives in accordance with the desired function as long as the object of the present invention is not affected.
  • the amount of additives with different functions is different, in general, the content of these functional additives is preferably 0.1% to 5%, more preferably 0.5% to 2%, at such a content, it can not only exert the corresponding functions, but also Will adversely affect the adhesive body.
  • the polymer raw material of the present invention contains no or less additives with poor chemical resistance as auxiliary additives or modifiers other than propylene compounds, so as to adapt to the acid-base environment.
  • the adhesive of the present invention on the premise of ensuring the bonding reliability, the higher the bonding force, the better.
  • it is generally easy to achieve 300N/25mm or more, more preferably 400N/25mm or more, and more preferably 500N/25mm.
  • the adhesion to aluminum sheet is used as the criterion because, when used in applications such as lithium batteries, as a layer in the adhesive packaging material, generally at least one side is bonded to the aluminum foil, so the When the adhesive force is high, it can be considered that the adhesiveness as a packaging material pressure-sensitive adhesive layer is high.
  • the method for producing the binder is not particularly limited as long as the components can be uniformly mixed, and for example, it can be mixed at a high temperature with an extruder.
  • the mixing temperature is not particularly limited and generally depends on the melting temperature of the adhesive components, but is generally 80°C or higher, preferably 100°C or higher, more preferably 120°C or higher, such as 150°C, and the upper limit is preferably 500°C or lower, more preferably 400°C °C or lower, most preferably 300°C or lower, such as 200°C or 250°C.
  • the adhesive of the present invention can be used as one layer of the adhesive of the lithium battery packaging material, and can be used to make the lithium battery.
  • this invention can manufacture by the following process, it can also manufacture by other well-known methods.
  • the components were physically dispersed uniformly according to the formula proportions recorded in the following table, and then blended and extruded through a twin-screw extruder at a temperature of 180° C., cooled under water, and pelletized.
  • the adhesive force of the adhesive is evaluated by the following peel strength test.
  • the aluminum sheets at both ends of the spline were fixed on a universal tensile tester, and a 180° peel tensile test was performed at a test rate of 100 mm/min.
  • the peel force (unit: N/25mm) was recorded.
  • the materials used in the present invention are as follows:
  • A1 Acid-modified polymer: mPE (acid or acid anhydride modified polyethylene, using metallocene-catalyzed polyethylene as raw material, target modification rate 0.2%-1.0% by mass, melting index 1.0-3.0 g/10mim@190 °C 2.16Kg),
  • B1 mPP (acid or acid anhydride modified polypropylene, using ethylene propylene random copolymer as raw material, target modification rate 0.2 mass%-1.0 mass%, melt index 10-50 g/10mim@190°C 2.16Kg)
  • B2 Polypropylene: SK R140H.
  • E1 gas phase nano-SiO 2 .
  • Example 3 As above, in Examples 1 to 3 containing all components A to D of the present invention, sufficient adhesiveness was obtained even without the use of polar components such as polyurethane. In addition, in Example 3, when 3% or more of nanoparticles and 15% or more of rubber elastomer are added at the same time, the adhesive force can be further improved to 500N/25mm or more.
  • Comparative Example 1 shows the case when components A, D are not added, and it was found that the adhesive force is obviously insufficient in this case.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention concerne une composition adhésive, un matériau d'emballage pour une batterie au lithium fabriquée avec la composition adhésive, et une batterie au lithium. Le but de la présente invention est de fournir une composition adhésive ayant à la fois une force d'adhérence et une fiabilité adhésive. La solution selon la présente invention porte sur une composition adhésive, comprenant (A) un composé de polyéthylène, (B) un composé de polypropylène, (C) un élastomère de polyoléfine, et (D) un élastomère de caoutchouc, les composants (A) et (B) étant des composés modifiés et/ou non modifiés. La composition adhésive de la présente invention présente à la fois une bonne force d'adhérence et une bonne fiabilité adhésive.
PCT/CN2022/070505 2021-02-04 2022-01-06 Composition adhésive, matériau d'emballage pour batterie au lithium et batterie au lithium WO2022166518A1 (fr)

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CN202110153872.1A CN114854332A (zh) 2021-02-04 2021-02-04 粘合剂组合物、锂电池包材以及锂电池
CN202110153872.1 2021-02-04

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KR20170028588A (ko) * 2015-09-04 2017-03-14 태영화학공업 주식회사 폴리올레핀 테이프 및 그 제조 방법

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CA2330101A1 (fr) * 1998-06-19 1999-12-23 I-Hwa Lee Compositions adhesives a base de melanges de polyethylenes greffes et de polyethylene non greffes et de caoutchouc contenant du styrene
CN101838362A (zh) * 2002-10-15 2010-09-22 埃克森美孚化学专利公司 聚烯烃粘合剂组合物和由其制成的制品
CN106471086A (zh) * 2014-07-03 2017-03-01 波士胶公司 内聚失效的无污染热熔性粘合剂
CN107083213A (zh) * 2017-05-26 2017-08-22 毕同召 一种乳制品包装用胶黏剂及其制备方法

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