CN109278384B - Heat-conducting sealing material for new energy battery pack and preparation method of heat-conducting sealing material - Google Patents

Heat-conducting sealing material for new energy battery pack and preparation method of heat-conducting sealing material Download PDF

Info

Publication number
CN109278384B
CN109278384B CN201810860160.1A CN201810860160A CN109278384B CN 109278384 B CN109278384 B CN 109278384B CN 201810860160 A CN201810860160 A CN 201810860160A CN 109278384 B CN109278384 B CN 109278384B
Authority
CN
China
Prior art keywords
heat
conducting
sealing material
battery pack
new energy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810860160.1A
Other languages
Chinese (zh)
Other versions
CN109278384A (en
Inventor
刘成彬
张亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Ximeike Heat Conduction Technology Co ltd
Original Assignee
Suzhou Ximeike Heat Conduction Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Ximeike Heat Conduction Technology Co ltd filed Critical Suzhou Ximeike Heat Conduction Technology Co ltd
Priority to CN201810860160.1A priority Critical patent/CN109278384B/en
Publication of CN109278384A publication Critical patent/CN109278384A/en
Application granted granted Critical
Publication of CN109278384B publication Critical patent/CN109278384B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/02—Layered products comprising a layer of natural or synthetic rubber with fibres or particles being present as additives in the layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
    • C08J3/246—Intercrosslinking of at least two polymers
    • 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
    • H01M50/183—Sealing members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/24—Organic non-macromolecular coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/28—Multiple coating on one surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/102—Oxide or hydroxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/105—Metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/12—Mixture of at least two particles made of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/302—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/10—Batteries
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2383/00—Characterised by the use of 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; Derivatives of such polymers
    • C08J2383/04—Polysiloxanes
    • C08J2383/07—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2483/00—Characterised by the use of 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; Derivatives of such polymers
    • C08J2483/04—Polysiloxanes
    • C08J2483/07—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0812—Aluminium
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/28—Nitrogen-containing compounds
    • C08K2003/285—Ammonium nitrates
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/38—Boron-containing compounds
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The invention discloses a heat-conducting sealing material for a new energy battery pack and a preparation method thereof, which relate to the technical field of heat-conducting materials and are prepared by processing the following steps: coating a surface treating agent on one side surface of a surface dielectric layer material, and slowly and uniformly baking at 80-95 ℃ until the surface treating agent is completely dried; weighing a resin matrix, a heat-conducting filler and an auxiliary agent, mixing and stirring, adding a phase-change material after stirring is finished, and stirring to obtain a semi-finished product of the heat-conducting material; coating the semi-finished product of the heat conduction material on the surface of the surface medium layer material coated with the surface treatment agent, treating the heat conduction interface material by using a forming roller or a forming scraper, and slowly and uniformly curing at 125 ℃ to obtain a phase change heat conduction layer material; step S4: and keeping the temperature at 120 +/-10 ℃, integrally calendering and molding the prepared heat-conducting silica gel layer, the prepared base material and the phase-change heat-conducting material, and keeping pressure and air cooling to prepare the heat-conducting sealing material for the new energy battery pack.

Description

Heat-conducting sealing material for new energy battery pack and preparation method of heat-conducting sealing material
Technical Field
The invention relates to the technical field of heat conduction materials, in particular to a heat conduction sealing material for a new energy battery pack and a preparation method thereof.
Background
The new energy electric automobile has become a mainstream trend for solving the problems of urban traffic, energy, environment and the like, and is also an important direction for the development of the automobile industry in the future. The safety of new energy vehicles is also receiving more and more attention. As the main power of new energy vehicles, the performance of power batteries is also paid more and more attention, the failure of a power battery is an important cause of safety problems, and most new energy vehicles have failures due to the power battery. When the battery is impacted by external force, overcharged, discharged and heat accumulated, the leakage of the battery can occur; local short circuit, insulation damage and the like, and major accidents occur.
The heat-conducting silica gel is an important material of a new energy power automobile, has excellent performance, can meet the requirements of shock resistance, water resistance, flame retardance and heat conduction of the power battery, can meet the use requirements of the automobile under different climatic conditions, and can improve the safety of the power battery.
However, the existing heat-conducting silica gel as a single shockproof, waterproof, flame-retardant and heat-conducting material has many disadvantages, such as poor puncture resistance, limited heat-conducting property, and poor bumping resistance, and is difficult to adapt to complex and variable driving road conditions.
Prior art 1: CN 104178042B discloses a solar cell module sealing adhesive film, which comprises the following components in parts by mass: an olefin polymer 100; 5-30 parts of heat-conducting filler; 0.05-2% of an anti-aging agent; 1-20 parts of adhesion promoting polymer; wherein the olefin polymer consists of a first olefin polymer and a second olefin polymer, the first olefin polymer has a glass transition temperature range of-59 ℃ to-32 ℃ and a melting peak range of 42 ℃ to 100 ℃ which are measured by DSC; the second olefin polymer has a melting peak range of 111-130 ℃ measured by DSC, and a melt flow rate range of 0.5-5 g/10min measured at 190 ℃ under the condition of 2.16 kg; the mass ratio of the first olefin polymer to the second olefin polymer is 65:35 to 90: 10.
The adhesive film of the invention can not permeate into the transparent adhesive film at the glass side, is safe and reliable, has obvious heat conduction effect, can reduce the working temperature of the assembly, improves the photoelectric conversion efficiency of the assembly when the assembly continuously works, and has simple manufacturing process and convenient use.
Furthermore, prior art 2: CN 105368052A discloses the technical field of heat conduction materials, in particular to a composite heat conduction silica gel gasket and a preparation method thereof, which are prepared by compounding the following components in parts by weight and then covering a PI film for pressing: 100 parts of methyl silicone oil, 15-30 parts of vinyl silicone oil, 1-5 parts of hydrogen-containing silicone oil, 0.1-0.3 part of catalyst, 0.02-0.05 part of inhibitor and 300-500 parts of flame-retardant aluminum hydroxide. Compared with the prior art, the invention can be as thin as 0.1mm in thickness, and still has excellent insulating and flame retardant properties.
The technical scheme has the advantages that: the polyimide film (PI film) has excellent insulation, puncture resistance and flame retardant property, and the PI film compounded on the surface of the thin heat-conducting silica gel gasket can improve the insulation and flame retardant property of the gasket.
In order to improve the performances of the existing new energy battery pack such as heat dissipation performance, shock resistance, water resistance, flame retardance and puncture resistance, and adaptability to various complex working conditions, and adapt to the good development momentum of modern new energy electric vehicles, it is necessary to design an excellent heat-conducting sealing material to promote the technical development of new energy.
Disclosure of Invention
The design purpose of the invention is as follows: in order to solve the problems of poor sealing performance, potential safety hazard of extremely strong battery liquid corrosivity, easiness in puncture, low heat conductivity and the like of the existing heat-conducting sealing material for the new-energy battery pack, and supplement the technical scheme of the existing heat-conducting sealing material for preparation and production, a new-energy battery pack heat-conducting sealing material is developed and provided, the product structure of the traditional battery pack heat-conducting sealing material is changed, and the new-energy battery pack heat-conducting sealing material has good heat conductivity, shock absorption, impact puncture resistance and sealing performance.
In order to realize the purpose, the heat-conducting sealing material is prepared by taking a high-quality polyimide film (PI film) as a base material, smelting and rolling a heat-conducting silica gel gasket on one surface, attaching a silica gel skin on the other surface, rolling and integrally forming, and the invention provides the following technical scheme:
the utility model provides a new forms of energy group battery heat conduction sealing material, includes by heat conduction silica gel layer, substrate and phase transition heat-conducting layer integrated into one piece's sealing material, heat conduction silica gel layer is prepared by the following raw materials by weight:
preferably, the cross-linking agent is hydrogen-containing organopolysiloxane, preferably methyl hydrogen-containing silicone oil, which has at least two silicon hydrogen bonds in the molecule, and the positions of the silicon hydrogen bonds can be side groups or can be positioned on the molecular terminal and the side chain simultaneously, preferably positioned on the side chain. The crosslinking agent preferably has a hydrogen content of 0.01 to 0.3% by mass and a viscosity at 25 ℃ of 30 to 1500 mPas, more preferably 50 to 900 mPas.
Preferably, the heat conducting filler is selected from at least one of micron-sized inorganic nitride powder, micron-sized inorganic oxide powder and micron-sized elemental metal powder, and is preferably one or a mixture of more than two of aluminum oxide, zinc oxide, boron nitride, aluminum nitride, silicon nitride and aluminum powder.
The substrate is preferably a polyimide film (PI film), and a plurality of uniform composite holes are formed in the surface of the substrate.
The phase-change heat conduction layer is processed according to the following steps:
step S1: coating the surface treating agent on one side surface of the surface medium layer material, wherein the coating thickness is 0.03-0.08 mm, and slowly and uniformly baking at 80-95 ℃ for 12-20 minutes until the surface treating agent is completely dried;
step S2: weighing 120-150 parts by weight of a resin matrix, 250-450 parts by weight of a heat-conducting filler and an auxiliary agent with the weight of 2% -5% of the weight of the heat-conducting filler, mixing and stirring, adding 40-80 parts by weight of a phase-change material into the mixture after stirring is finished, and stirring to obtain a semi-finished product of the heat-conducting material;
step S3: coating the semi-finished product of the heat conduction material obtained in the step S2 on the surface of the surface medium layer material treated in the step S1 coated with the surface treatment agent, treating the heat conduction interface material by using a forming roller or a forming scraper with required thickness (0.08-0.12 mm), and slowly and uniformly curing at 125 ℃ for 8-15 minutes to obtain a phase change heat conduction layer material;
as a preparation and forming process of the heat-conducting sealing material of the new energy battery pack, the step S4 is performed: and keeping the temperature at 120 +/-10 ℃, integrally calendering and molding the prepared heat-conducting silica gel layer, the prepared base material and the newly prepared phase-change heat-conducting layer, and keeping pressure and air cooling to prepare the heat-conducting sealing material for the new energy battery pack.
Preferably, in step S1, the surface dielectric layer material is one of 101 fiberglass cloth, 106 fiberglass cloth and 1080 fiberglass cloth.
Further, in step S2, the stirring process conditions are: and (4) defoaming for 45-60 minutes in vacuum at the vacuum degree of-0.1 MPa.
Preferably, the resin matrix is one or more of epoxy resin, bismaleimide, polyimide, cyanate ester and polyarylacetylene.
Preferably, the auxiliary agent comprises one or a mixture of more of a silane coupling agent, an aluminate coupling agent, a silane cross-linking agent and a defoaming agent.
Further, the phase change material is a mixture prepared from paraffin and high-density polyethylene according to a weight ratio of 1: 5-5: 1.
Preferably, the surface treatment agent comprises one or a mixture of several of dimethyl silicone oil, acetone, toluene, natural rubber, butyl rubber and silicone rubber and is used for enhancing the adhesion of the surface dielectric layer material and the semi-finished product of the silica gel gasket.
The qualified ultrathin phase change heat conduction interface material is prepared, and the product performance parameters are as follows:
Figure GDA0002925005940000031
Figure GDA0002925005940000041
the invention has the following beneficial effects:
1. the heat-conducting sealing material for the new energy battery pack has inherent performance of a heat-conducting interface material, has strong mechanical strength and insulating property, and can be applied to the fields of heat-conducting interface materials, heat dissipation and storage of electronic components, medical instruments, protective clothing and the like;
2. the heat-conducting sealing material for the new energy battery pack takes the effects of strengthening structural strength and preventing puncture by taking the PI film as the intermediate layer, effectively protects the structure of the battery pack, and ensures the use safety and reliability;
3. the three-layer material integrated new energy battery pack heat-conducting sealing material is formed by placing the phase-change material on the innermost layer, so that the phase-change material has sufficient capacity to transfer electrochemical reaction heat generated by the battery pack, the use safety of the battery pack is guaranteed, and the corrosion resistance of the battery pack is enhanced.
Drawings
FIG. 1 is a schematic cross-sectional view of a heat conductive sealing material for a new energy battery pack according to the present invention;
FIG. 2 is a diagram illustrating a state of use of the heat conductive sealing material for a new energy battery pack according to the present invention;
the battery pack comprises a battery pack, a heat conduction silica gel layer, a base material, a composite hole, a phase change heat conduction layer and a phase change heat conduction layer, wherein the battery pack comprises 1-a heat conduction silica gel layer, 2-a base material, 21-a composite hole, 3-a phase change heat conduction layer and 4-a battery pack.
Detailed Description
The technical solution of the present invention will be clearly and completely described in the following embodiments.
Example 1:
this embodiment 1 provides a new forms of energy group battery heat conduction sealing material, includes by heat conduction silica gel layer, substrate and phase transition heat-conducting layer integrated into one piece's sealing material, heat conduction silica gel layer is prepared by the following raw materials by weight:
further, the crosslinking agent is a hydrogen-containing organopolysiloxane, preferably methyl hydrogen-containing silicone oil, having a hydrogen content of 0.2% by mass and a viscosity of 800 mPas at 25 ℃.
Further, the heat conducting filler is selected from a mixture of micron-grade aluminum oxide and zinc oxide.
The substrate is preferably a polyimide film (PI film), and a plurality of uniform composite holes are formed in the surface of the substrate.
The preparation process comprises the following steps:
step S1: coating the surface treating agent on one side surface of the surface medium layer material, wherein the coating thickness is 0.03-0.08 mm, and slowly and uniformly baking for 12 minutes at 80-95 ℃ until the surface treating agent is completely dried;
step S2: weighing 120 parts by weight of resin matrix, 250 parts by weight of heat-conducting filler and 2% by weight of auxiliary agent, mixing and stirring, adding 40 parts by weight of phase-change material into the mixture after stirring is finished, and stirring to obtain a semi-finished product of heat-conducting material;
step S3: coating the semi-finished product of the heat conduction material obtained in the step S2 on the surface of the surface medium layer material coated with the surface treatment agent treated in the step S1, treating the heat conduction interface material by using a forming roller or a forming scraper with required thickness (0.08-0.12 mm), and slowly and uniformly curing for 8 minutes at 125 ℃ to obtain the phase change heat conduction layer material;
as a preparation and forming process of the heat-conducting sealing material of the new energy battery pack, the step S4 is implemented: and keeping the temperature at 120 +/-10 ℃, integrally calendering and molding the prepared heat-conducting silica gel layer, the prepared base material and the just-finished phase-change heat-conducting layer, and keeping pressure and air cooling to prepare the heat-conducting sealing material for the new energy battery pack.
Example 2:
this embodiment 1 provides a new forms of energy group battery heat conduction sealing material, includes by heat conduction silica gel layer, substrate and phase transition heat-conducting layer integrated into one piece's sealing material, heat conduction silica gel layer is prepared by the following raw materials by weight:
further, the crosslinking agent is a hydrogen-containing organopolysiloxane, preferably methyl hydrogen-containing silicone oil, having a hydrogen content of 0.25% by mass and a viscosity of 500 mPas at 25 ℃.
Further, the thermally conductive filler is selected from a mixture of micron-sized boron nitride, aluminum nitride, and silicon nitride.
The substrate is preferably a polyimide film (PI film), and a plurality of uniform composite holes are formed in the surface of the substrate.
The preparation process comprises the following steps:
step S1: coating the surface treating agent on one side surface of the surface medium layer material, wherein the coating thickness is 0.03-0.08 mm, and slowly and uniformly baking for 18 minutes at 80-95 ℃ until the surface treating agent is completely dried;
step S2: weighing 140 parts by weight of resin matrix, 280 parts by weight of heat-conducting filler and 4% by weight of auxiliary agent, mixing and stirring, adding 60 parts by weight of phase-change material into the mixture after stirring is finished, and stirring to obtain a semi-finished product of heat-conducting material;
step S3: coating the semi-finished product of the heat conduction material obtained in the step S2 on the surface of the surface medium layer material treated in the step S1, which is coated with the surface treatment agent, treating the heat conduction interface material by using a forming roller or a forming scraper with the required thickness (0.08-0.12 mm), and slowly and uniformly curing for 12 minutes at 125 ℃ to obtain a phase change heat conduction layer material;
as a preparation and forming process of the heat-conducting sealing material of the new energy battery pack, the step S4 is implemented: and keeping the temperature at 120 +/-10 ℃, integrally calendering and molding the prepared heat-conducting silica gel layer, the prepared base material and the just-finished phase-change heat-conducting layer, and keeping pressure and air cooling to prepare the heat-conducting sealing material for the new energy battery pack.
Example 3:
this embodiment 1 provides a new forms of energy group battery heat conduction sealing material, includes by heat conduction silica gel layer, substrate and phase transition heat-conducting layer integrated into one piece's sealing material, heat conduction silica gel layer is prepared by the following raw materials by weight:
further, the crosslinking agent is a hydrogen-containing organopolysiloxane, preferably methyl hydrogen-containing silicone oil, having a hydrogen content of 0.3% by mass and a viscosity of 800 mPas at 25 ℃.
Further, the thermally conductive filler is selected from a mixture of micron-sized aluminum nitride, silicon nitride, and aluminum powder.
The substrate is preferably a polyimide film (PI film), and a plurality of uniform composite holes are formed in the surface of the substrate.
The preparation process comprises the following steps:
step S1: coating the surface treating agent on one side surface of the surface medium layer material, wherein the coating thickness is 0.03-0.08 mm, and slowly and uniformly baking at 80-95 ℃ for 12-20 minutes until the surface treating agent is completely dried;
step S2: weighing 140 parts by weight of resin matrix, 350 parts by weight of heat-conducting filler and 5% by weight of auxiliary agent, mixing and stirring, adding 80 parts by weight of phase-change material into the mixture after stirring is finished, and stirring to obtain a semi-finished product of heat-conducting material;
step S3: coating the semi-finished product of the heat conduction material obtained in the step S2 on the surface of the surface medium layer material treated in the step S1, which is coated with the surface treatment agent, treating the heat conduction interface material by using a forming roller or a forming scraper with the required thickness (0.08-0.12 mm), and slowly and uniformly curing for 15 minutes at 125 ℃ to obtain a phase change heat conduction layer material;
as a preparation and forming process of the heat-conducting sealing material of the new energy battery pack, the step S4 is implemented: and keeping the temperature at 120 +/-10 ℃, integrally calendering and molding the prepared heat-conducting silica gel layer, the prepared base material and the just-finished phase-change heat-conducting layer, and keeping pressure and air cooling to prepare the heat-conducting sealing material for the new energy battery pack.
Comparative example 1:
this comparative example was selected from example 1 of prior art 1:
65 parts by mass of an ethylene octene copolymer (AGE 8130 in Dow chemical, glass transition temperature-59 ℃ C., melting peak temperature 50 ℃ C.), 35 parts by mass of an ethylene- α -olefin block copolymer (INFUSE 9000 in Dow chemical, melting peak temperature 120 ℃ C., melt flow rate of 0.5g/10min as measured under 2.16kg at 190 ℃ C.), 5 parts by mass of a silane coupling agent having an average particle diameter of 40nm, peroxide-modified zinc oxide, 1 part by mass of silane-grafted LDPE (SX 522A: CM401 from AEI Compounds Co., Ltd.), and 0.1 part by mass of an antiaging agent [ containing 0.05 part by mass of 2, 2' -dihydroxy-4-methoxybenzophenone as an ultraviolet light absorber, 0.03 part by mass of Lowilite-62 as a light stabilizer, and 0.02 part by mass of tris (2, 4-di-t-butylphenyl) phosphite as an antioxidant ], and adding the uniformly mixed materials into a melt extrusion casting machine for extrusion, and carrying out casting, cooling, traction and curling on the extrudate to obtain the solar cell module sealing adhesive film with the film thickness of 0.6 mm.
Combining the above embodiments and comparative examples, the product prepared by the method is tested by the test method described in the summary of the invention to obtain the following performance parameter table:
parameter(s) Example 1 Example 2 Example 3 Comparative example 1 Unit of
Coefficient of thermal conductivity 52.6 55.6 57.9 18.3 W/m*k
Temperature range -48～204 -59～+189 -47～+214 -56～+204 ℃
Thermal resistance 0.448 0.446 0.445 0.532 ℃/W
Enthalpy of phase change 209 201 198 - J/g
Tensile strength 84 85 82 11 MPa
Hardness of outer surface 32 30 28 16 MPa
The statistical data show that: compared with the sealing adhesive film of the solar cell module in the prior art, the heat-conducting sealing material of the new energy battery pack has the advantages that various performances are greatly improved, and the phase change enthalpy is improved in a crossing manner;
this new forms of energy group battery heat conduction sealing material plays additional strengthening intensity and prevents the effect of puncture as the intermediate level with the help of the PI membrane, has effectively protected the structure of group battery, has ensured safety in utilization and reliability, and three-layer material integrated into one piece's new forms of energy group battery heat conduction sealing material places phase change material in the inlayer, has abundant ability to say that the electrochemical reaction heat transfer that the group battery produced goes out, the safety in utilization of guarantee group battery, strengthens its corrosion resisting property.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments, and various changes, modifications, substitutions and alterations can be made without departing from the spirit of the invention within the knowledge of those skilled in the art, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims (11)

1. The utility model provides a new forms of energy group battery heat conduction sealing material, includes by heat conduction silica gel layer, substrate and phase transition heat-conducting layer integrated into one piece's sealing material, its characterized in that: the heat-conducting silica gel layer is prepared from the following raw materials in parts by weight:
Figure FDA0002948252050000011
the base material is a polyimide film, and a plurality of uniform composite holes are formed in the surface of the base material;
the phase change heat conduction layer is in direct contact with the new energy battery pack.
2. The heat-conducting sealing material for the new energy battery pack according to claim 1, wherein: the cross-linking agent is hydrogen-containing organopolysiloxane, the molecule of which has at least two silicon-hydrogen bonds, and the positions of the silicon-hydrogen bonds are side groups or are positioned on the molecular terminal and the side chain simultaneously; the cross-linking agent contains 0.01-0.3% of hydrogen by mass, and has a viscosity of 30-1500 mPas at 25 ℃.
3. The heat-conducting sealing material for the new energy battery pack according to claim 2, wherein: the viscosity of the crosslinking agent at 25 ℃ is 50-900 mPas.
4. The heat-conducting sealing material for the new energy battery pack according to claim 1, wherein: the heat-conducting filler is at least one selected from micron-sized inorganic nitride powder, micron-sized inorganic oxide powder and micron-sized metal simple substance powder, and is one or a mixture of more than two of aluminum oxide, zinc oxide, boron nitride, aluminum nitride, silicon nitride and aluminum powder.
5. The heat-conducting sealing material for the new energy battery pack according to claim 1, wherein: the phase-change heat conduction layer is processed according to the following steps: step S1: coating the surface treating agent on one side surface of the surface medium layer material, wherein the coating thickness is 0.03-0.08 mm, and slowly and uniformly baking at 80-95 ℃ for 12-20 minutes until the surface treating agent is completely dried; step S2: weighing 120-150 parts by weight of a resin matrix, 250-450 parts by weight of a heat-conducting filler and an auxiliary agent with the weight of 2% -5% of the weight of the heat-conducting filler, mixing and stirring, adding 40-80 parts by weight of a phase-change material into the mixture after stirring is finished, and stirring to obtain a semi-finished product of the heat-conducting material; step S3: and (4) coating the semi-finished product of the heat conduction material obtained in the step (S2) on the surface of the surface medium layer material coated with the surface treatment agent treated in the step (S1), treating the heat conduction interface material by using a forming roller or a forming scraper with the required thickness of 0.08-0.12 mm, and slowly and uniformly curing at 125 ℃ for 8-15 minutes to obtain the phase change heat conduction layer material.
6. The heat-conducting sealing material for the new energy battery pack according to claim 5, wherein: in step S1, the surface dielectric layer material is one of 101 fiberglass cloth, 106 fiberglass cloth and 1080 fiberglass cloth.
7. The heat-conducting sealing material for the new energy battery pack according to claim 5, wherein: in step S2, the stirring process conditions are: and (4) defoaming for 45-60 minutes in vacuum at the vacuum degree of-0.1 MPa.
8. The heat-conducting sealing material for the new energy battery pack according to claim 5, wherein: the resin matrix is one or a mixture of epoxy resin, bismaleimide, polyimide, cyanate ester and polyarylacetylene.
9. The heat-conducting sealing material for the new energy battery pack according to claim 5, wherein: the auxiliary agent comprises one or a mixture of more of a silane coupling agent, an aluminate coupling agent, a silane cross-linking agent and a defoaming agent; the phase-change material is a mixture prepared from paraffin and high-density polyethylene according to a weight ratio of 1: 5-5: 1.
10. The heat-conducting sealing material for the new energy battery pack according to claim 5, wherein: the surface treating agent comprises one or a mixture of several of dimethyl silicone oil, acetone, toluene, natural rubber, butyl rubber and silicon rubber and is used for enhancing the adhesion of the surface dielectric layer material and the semi-finished product of the silica gel gasket.
11. The heat-conducting sealing material for the new energy battery pack as claimed in claim 5, which is prepared by processing the following steps: the steps S4 are carried out immediately after the steps S1, S2, S3 of claim 5 are included: and keeping the temperature at 120 +/-10 ℃, integrally calendering and molding the prepared heat-conducting silica gel layer, the prepared base material and the newly prepared phase-change heat-conducting layer, and keeping pressure and air cooling to prepare the heat-conducting sealing material for the new energy battery pack.
CN201810860160.1A 2018-08-01 2018-08-01 Heat-conducting sealing material for new energy battery pack and preparation method of heat-conducting sealing material Active CN109278384B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810860160.1A CN109278384B (en) 2018-08-01 2018-08-01 Heat-conducting sealing material for new energy battery pack and preparation method of heat-conducting sealing material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810860160.1A CN109278384B (en) 2018-08-01 2018-08-01 Heat-conducting sealing material for new energy battery pack and preparation method of heat-conducting sealing material

Publications (2)

Publication Number Publication Date
CN109278384A CN109278384A (en) 2019-01-29
CN109278384B true CN109278384B (en) 2021-04-09

Family

ID=65182880

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810860160.1A Active CN109278384B (en) 2018-08-01 2018-08-01 Heat-conducting sealing material for new energy battery pack and preparation method of heat-conducting sealing material

Country Status (1)

Country Link
CN (1) CN109278384B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112021000479T5 (en) * 2020-01-08 2022-12-01 Rogers Corporation Layered phase change composite with high thermal conductivity
CN113635639A (en) * 2021-08-13 2021-11-12 东莞市兆科电子材料科技有限公司 Multilayer structure heat conduction gasket and preparation method thereof
CN114854208A (en) * 2022-04-26 2022-08-05 苏州阳池科技有限公司 Heat-conducting silica gel gasket composite material and preparation method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100551989C (en) * 2008-02-01 2009-10-21 南京凯汇工业科技有限公司 A kind of phase-change heat conductive material and preparation method thereof
CN103409116B (en) * 2013-07-30 2015-07-22 深圳德邦界面材料有限公司 Insulating enhanced heat conduction interface material and preparation method thereof
CN103545273B (en) * 2013-09-30 2015-03-18 深圳市鸿富诚屏蔽材料有限公司 Energy-storage radiating sheet and production method thereof

Also Published As

Publication number Publication date
CN109278384A (en) 2019-01-29

Similar Documents

Publication Publication Date Title
CN109278384B (en) Heat-conducting sealing material for new energy battery pack and preparation method of heat-conducting sealing material
TWI623598B (en) Curable encapsulants and use thereof
CN112409791A (en) Heat-conducting composite material and preparation method thereof
JP6452243B2 (en) Polyimide resin composition and adhesive film using the same
CN113308121B (en) Insulating high-thermal-conductivity gel filled with composite thermal-conductive filler based on chemical bond assembly
CN111607351A (en) Heat-conducting polyurethane pouring sealant for new energy vehicle battery and preparation method thereof
CN103897265A (en) Resin composition for solar back panel base material and preparation method
CN111572135B (en) Aluminum-plastic film for lithium battery packaging and preparation method thereof
CN110157104A (en) A kind of high temperature resistant ethylene propylene diene rubber
CN103890967A (en) Sealing film for solar cells, and solar cell using same
CN109233715A (en) The double-component epoxy adhesive and preparation method thereof of resistance to lithium-ion battery electrolytes
KR102354305B1 (en) Heat conducting-insulating paint composition and exterior steel sheet for solar cell comprising the same
JP2017057340A (en) Polyimide resin composition and glue film using the same
CN114716919A (en) Heat-conducting adhesive film for solar cell and application thereof
CN106047251A (en) Boron nitride nanotube modified composite epoxy pouring sealant for LED display screen
CN113707744A (en) Connecting film for photovoltaic cell
CN113635578A (en) Preparation method of fuel cell protective film
CN113429911A (en) Bridging agent, composition, master batch, packaging adhesive film and electronic component
CN106047253A (en) Nanometer aluminum oxide modified composite epoxy pouring sealant for LED streetlamp display screen
CN106085318A (en) A kind of composite epoxy casting glue of LED display magnetic heat radiation
CN106047250A (en) Nano-diamond modified composite epoxy pouring sealant for LED displays
CN117186550B (en) Anti-aging PP flame-retardant plate and preparation method thereof
CN114479580B (en) Graphene composite heat dissipation coating and preparation method thereof, and heat dissipation adhesive tape and preparation method thereof
CN113540279B (en) Heat dissipation solar cell backboard and preparation method thereof
CN105860903A (en) Composite epoxy pouring sealant high in surface lubrication degree and prone to demolding for LED display screen

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant