CN114702759A - Multifunctional flexible insulating sheet for automobile lithium battery and processing technology thereof - Google Patents

Multifunctional flexible insulating sheet for automobile lithium battery and processing technology thereof Download PDF

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Publication number
CN114702759A
CN114702759A CN202210339619.XA CN202210339619A CN114702759A CN 114702759 A CN114702759 A CN 114702759A CN 202210339619 A CN202210339619 A CN 202210339619A CN 114702759 A CN114702759 A CN 114702759A
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parts
insulating sheet
lithium battery
processing technology
rubber
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严兰
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Suzhou Jiu Hong Electron Co ltd
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Suzhou Jiu Hong Electron Co ltd
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    • C—CHEMISTRY; METALLURGY
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    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/002—Methods
    • B29B7/005—Methods for mixing in batches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • 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
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0076—Curing, vulcanising, cross-linking
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206—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
    • B32B2307/51—Elastic
    • 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
    • B32B2307/552—Fatigue strength
    • 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
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
    • 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
    • C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
    • 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
    • C08J2421/00—Characterised by the use of unspecified rubbers
    • 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
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • 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
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
    • 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
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    • C08K3/02—Elements
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08K7/00—Use of ingredients characterised by shape
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Abstract

The invention discloses a multifunctional flexible insulating sheet for an automobile lithium battery and a processing technology thereof, and relates to the field of insulating sheets, wherein the insulating sheet comprises the following components in parts by weight: 75-95 parts of ethylene propylene diene monomer, 60-80 parts of elastic polyurethane, 15-40 parts of reinforced rubber, 15-30 parts of butadiene rubber, 5-20 parts of calcined kaolin, 5-20 parts of polyethylene powder, 5-20 parts of white carbon black, 5-10 parts of sulfur powder, 2-10 parts of triallyl cyanurate, 2-10 parts of stearic acid, 5-15 parts of a coupling agent, 5-10 parts of a softener, 5-10 parts of zinc oxide, 1-5 parts of an anti-aging agent, 1-5 parts of an accelerator and 1-5 parts of tackifying resin; the invention improves the tensile resistance and the aging resistance of the insulating sheet, has longer service life, good shockproof and sealing performances, does not need to be adhered by using an adhesive, does not generate peculiar smell in a high-temperature environment, and has reasonable component preparation.

Description

Multifunctional flexible insulating sheet for automobile lithium battery and processing technology thereof
Technical Field
The invention relates to the field of insulating sheets, in particular to a multifunctional flexible insulating sheet for an automobile lithium battery and a processing technology thereof.
Background
At present, lithium batteries having the advantages of high energy density, long cycle life, greenness, no pollution, etc. have become one of the inevitable choices in the automobile industry. In the production process of the automobile lithium battery, a flexible insulating sheet is generally required to be used, but the function of the automobile lithium battery is single.
The existing multifunctional flexible insulating sheet for the automobile lithium battery and the processing technology thereof have certain defects in use, the insulating sheet has poor tensile resistance and ageing resistance, the service life is short, the multifunctional flexible insulating sheet does not have good shockproof and sealing performances, and the component preparation is not reasonable enough.
Disclosure of Invention
The invention aims to provide a multifunctional flexible insulating sheet for an automobile lithium battery and a processing technology thereof, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a car is multi-functional flexible insulating piece for lithium cell, according to the mass fraction, the insulating piece includes following component: 75-95 parts of ethylene propylene diene monomer, 60-80 parts of elastic polyurethane, 15-40 parts of reinforced rubber, 15-30 parts of butadiene rubber, 5-20 parts of calcined kaolin, 5-20 parts of polyethylene powder, 5-20 parts of white carbon black, 5-10 parts of sulfur powder, 2-10 parts of triallyl cyanurate, 2-10 parts of stearic acid, 5-15 parts of a coupling agent, 5-10 parts of a softening agent, 5-10 parts of zinc oxide, 1-5 parts of an anti-aging agent, 1-5 parts of an accelerator, 1-5 parts of tackifying resin, 1-5 parts of microcrystalline wax, 2-10 parts of a catalyst and 2-10 parts of a structure inhibitor.
As a further scheme of the invention: the insulation sheet comprises the following components in parts by weight: 80 parts of ethylene propylene diene monomer, 70 parts of elastic polyurethane, 30 parts of reinforced rubber, 25 parts of butadiene rubber, 12 parts of calcined kaolin, 12 parts of polyethylene powder, 12 parts of white carbon black, 8 parts of sulfur powder, 8 parts of triallyl cyanurate, 8 parts of stearic acid, 10 parts of a coupling agent, 8 parts of a softening agent, 8 parts of zinc oxide, 3 parts of an anti-aging agent, 3 parts of an accelerator, 2 parts of tackifying resin, 2 parts of microcrystalline wax, 5 parts of a catalyst and 5 parts of a structure inhibitor.
As a further scheme of the invention: the thickness of insulating piece is 0.5-2.0mm, and the external diameter of insulating piece is 5-40mm, and the internal diameter is 1-20mm, coupling agent designs for silane coupling agent, the catalyst design is that organic titanium stings the mixture, the structural inhibitor design is diphenylmethane.
As a further scheme of the invention: the preparation method of the insulating sheet comprises the following steps:
the method comprises the following steps: preparing raw materials according to parts by weight, mixing ethylene propylene diene monomer, reinforcing rubber, butadiene rubber, stearic acid, elastic polyurethane, polyethylene powder, triallyl cyanurate, a cross-linking agent and a coupling agent, and putting the mixture into an internal mixer for primary internal mixing;
step two: then adding calcined kaolin, sulfur powder, white carbon black, zinc oxide, an anti-aging agent, a softening agent, an accelerator, tackifying resin, microcrystalline wax, a catalyst and a structure inhibitor to complete an internal mixing process;
step three: discharging the rubber material obtained by banburying into an open mill by a banbury mixer, thinly passing the rubber material through three rollers in the open mill, and cutting the rubber material into block rubber blocks with certain sizes for later use after the thinly passing is finished;
step four: putting the block-shaped rubber blocks in the third step into a calender for calendering treatment to obtain an insulating film, and then performing thinning, widening and cutting on the insulating film extruded by the calender by using a stretcher to obtain the insulating film with required thickness and width;
step five: adhering the insulating film obtained in the fourth step to gauze with the surface subjected to water removal treatment through a calender to form insulating cloth, vulcanizing the insulating cloth through a vulcanizing machine, and then stripping the gauze to obtain the vulcanized insulating film;
step six: and pressing the insulating film obtained by vulcanization treatment with the phenolic resin base plate through a mold press to obtain an insulating sheet finished product.
As a further scheme of the invention: in the first step, the preheating and banburying temperature of the banbury mixer is 50-60 ℃, and the banburying time of the banbury mixer is 2-6 min.
As a further scheme of the invention: and in the second step, the banburying temperature of the banbury mixer is 160-170 ℃, and the banburying time of the banbury mixer is 8-12 min.
As a further scheme of the invention: in the third step, the thin passing times of the open mill are 12-16 times, and the roller temperature of the open mill is controlled to be 60-70 ℃.
As a further scheme of the invention: in the fourth step, the thickness of the insulating film extruded by the calender is controlled to be 1.0-3.0mm, and the temperature of the calender is controlled to be 80-100 ℃.
As a further scheme of the invention: and in the step five, the temperature of the vulcanizing machine during the vulcanizing treatment is controlled at 120 ℃ at 100 ℃, and the vulcanizing time is 10-12 min.
Compared with the prior art, the invention has the beneficial effects that:
the sizing material of this insulating piece comprises ethylene propylene diene monomer, reinforcement rubber and cis-polybutadiene rubber, and use fillers such as anti-aging agent, zinc oxide, sulfur powder and white carbon black, via banburying, mill and vulcanization, can improve tensile resistance and ageing resistance of insulating piece, long service life, and through using elastic polyurethane and structural inhibitor, make the insulating piece have good shockproof and sealing performance, need not to use the adhesive to adhere to, thereby avoided the adhesive to lead to the fact the influence to the performance of insulating piece, and the insulating piece is in high temperature environment, can not produce the peculiar smell yet, the composition is prepared rationally, the processing technology science.
Drawings
FIG. 1 is a flow chart of the processing technique of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The invention provides a technical scheme that: the utility model provides an automobile lithium cell is with multi-functional flexible insulating piece, according to the part by mass, the insulating piece includes following composition: 75-95 parts of ethylene propylene diene monomer, 60-80 parts of elastic polyurethane, 15-40 parts of reinforced rubber, 15-30 parts of butadiene rubber, 5-20 parts of calcined kaolin, 5-20 parts of polyethylene powder, 5-20 parts of white carbon black, 5-10 parts of sulfur powder, 2-10 parts of triallyl cyanurate, 2-10 parts of stearic acid, 5-15 parts of coupling agent, 5-10 parts of softener, 5-10 parts of zinc oxide, 1-5 parts of anti-aging agent, 1-5 parts of accelerator, 1-5 parts of tackifying resin, 1-5 parts of microcrystalline wax, 2-10 parts of catalyst and 2-10 parts of structural inhibitor, wherein the insulating sheet specifically comprises the following components in parts by mass: 80 parts of ethylene propylene diene monomer, 70 parts of elastic polyurethane, 30 parts of reinforced rubber, 25 parts of butadiene rubber, 12 parts of calcined kaolin, 12 parts of polyethylene powder, 12 parts of white carbon black, 8 parts of sulfur powder, 8 parts of triallyl cyanurate, 8 parts of stearic acid, 10 parts of a coupling agent, 8 parts of a softening agent, 8 parts of zinc oxide, 3 parts of an anti-aging agent, 3 parts of an accelerator, 2 parts of tackifying resin, 2 parts of microcrystalline wax, 5 parts of a catalyst and 5 parts of a structure inhibitor, wherein the thickness of an insulating sheet is 0.5-2.0mm, the outer diameter of the insulating sheet is 5-40mm, the inner diameter of the insulating sheet is 1-20mm, the coupling agent is designed to be a silane coupling agent, the catalyst is designed to be an organic titanium chelating agent, and the structure inhibitor is designed to be diphenylmethane;
example 1:
the invention provides a technical scheme that: a processing technology of a multifunctional flexible insulating sheet for an automobile lithium battery comprises the following steps: the method comprises the following steps: preparing raw materials according to parts by weight, mixing ethylene propylene diene monomer, reinforcing rubber, butadiene rubber, stearic acid, elastic polyurethane, polyethylene powder, triallyl cyanurate, a cross-linking agent and a coupling agent, and putting the mixture into an internal mixer for primary internal mixing; step two: then adding calcined kaolin, sulfur powder, white carbon black, zinc oxide, an anti-aging agent, a softening agent, an accelerator, tackifying resin, microcrystalline wax, a catalyst and a structure inhibitor to complete an internal mixing process; step three: discharging the rubber material obtained by banburying into an open mill by a banbury mixer, thinly passing the rubber material through three rollers in the open mill, and cutting the rubber material into block rubber blocks with certain sizes for later use after the thinly passing is finished; step four: putting the block-shaped rubber blocks in the third step into a calender for calendering treatment to obtain an insulating film, and then performing thinning, widening and cutting on the insulating film extruded by the calender by using a stretcher to obtain the insulating film with required thickness and width; step five: adhering the insulating film obtained in the fourth step to gauze with the surface subjected to water removal treatment through a calender to form insulating cloth, vulcanizing the insulating cloth through a vulcanizing machine, and then stripping the gauze to obtain the vulcanized insulating film; step six: pressing the insulating film obtained by vulcanization treatment with a phenolic resin base plate through a molding press to obtain an insulating sheet finished product; preheating and banburying temperature of an internal mixer in the first step is 50 ℃, banburying time of the internal mixer is 2min, banburying temperature of the internal mixer in the second step is 160 ℃, banburying time of the internal mixer is 8min, thin passing times of an open mill in the third step are 12 times, roller temperature of the open mill is controlled to be 60 ℃, thickness of an insulating film extruded by a calender in the fourth step is controlled to be 1.0mm, temperature of a calender is controlled to be 80 ℃, temperature of a vulcanizing machine in the fifth step is controlled to be 100 ℃ during vulcanization treatment, and vulcanizing time is 10 min;
example 2:
the invention provides a technical scheme that: a processing technology of a multifunctional flexible insulating sheet for an automobile lithium battery comprises the following steps: the method comprises the following steps: preparing raw materials according to parts by weight, mixing ethylene propylene diene monomer, reinforcing rubber, butadiene rubber, stearic acid, elastic polyurethane, polyethylene powder, triallyl cyanurate, a cross-linking agent and a coupling agent, and putting the mixture into an internal mixer for primary internal mixing; step two: then adding calcined kaolin, sulfur powder, white carbon black, zinc oxide, an anti-aging agent, a softening agent, an accelerator, tackifying resin, microcrystalline wax, a catalyst and a structure inhibitor to complete an internal mixing process; step three: discharging the rubber material obtained by banburying into an open mill by a banbury mixer, thinly passing the rubber material through three rollers in the open mill, and cutting the rubber material into block rubber blocks with certain sizes for later use after the thinly passing is finished; step four: putting the block-shaped rubber blocks in the third step into a calender for calendering treatment to obtain an insulating film, and then performing thinning, widening and cutting on the insulating film extruded by the calender by using a stretcher to obtain the insulating film with required thickness and width; step five: adhering the insulating film obtained in the fourth step to gauze with the surface subjected to water removal treatment through a calender to form insulating cloth, vulcanizing the insulating cloth through a vulcanizing machine, and then stripping the gauze to obtain the vulcanized insulating film; step six: pressing the insulating film obtained by vulcanization treatment with a phenolic resin base plate through a molding press to obtain an insulating sheet finished product; preheating and banburying temperature of an internal mixer in the first step is 55 ℃, banburying time of the internal mixer is 4min, banburying temperature of the internal mixer in the second step is 165 ℃, banburying time of the internal mixer is 10min, thin passing times of an open mill in the third step is 14 times, roll temperature of the open mill is 65 ℃, thickness of an insulating film extruded by a calender in the fourth step is 2.0mm, temperature of a calender is 90 ℃, temperature of a vulcanizing machine in the fifth step is 110 ℃ during vulcanization treatment, and vulcanizing time is 11 min;
example 3:
the invention provides a technical scheme that: the invention discloses a processing technology of a multifunctional flexible insulating sheet for an automobile lithium battery, which provides a technical scheme that: a processing technology of a multifunctional flexible insulating sheet for an automobile lithium battery comprises the following steps: the method comprises the following steps: preparing raw materials according to parts by weight, mixing ethylene propylene diene monomer, reinforcing rubber, butadiene rubber, stearic acid, elastic polyurethane, polyethylene powder, triallyl cyanurate, a cross-linking agent and a coupling agent, and putting the mixture into an internal mixer for primary internal mixing; step two: then adding calcined kaolin, sulfur powder, white carbon black, zinc oxide, an anti-aging agent, a softening agent, an accelerator, tackifying resin, microcrystalline wax, a catalyst and a structure inhibitor to complete an internal mixing process; step three: discharging the rubber material obtained by banburying into an open mill by a banbury mixer, thinly passing the rubber material through three rollers in the open mill, and cutting the rubber material into block rubber blocks with certain sizes for later use after the thinly passing is finished; step four: putting the block-shaped rubber blocks in the third step into a calender for calendering treatment to obtain an insulating film, and then performing thinning, widening and cutting on the insulating film extruded by the calender by using a stretcher to obtain the insulating film with required thickness and width; step five: adhering the insulating film obtained in the fourth step to gauze with the surface subjected to water removal treatment through a calender to form insulating cloth, vulcanizing the insulating cloth through a vulcanizing machine, and then stripping the gauze to obtain the vulcanized insulating film; step six: pressing the insulating film obtained by the vulcanization treatment with a phenolic resin base plate through a mould press to obtain an insulating sheet finished product; the preheating and banburying temperature of the internal mixer in the first step is 60 ℃, the banburying time of the internal mixer is 6min, the banburying temperature of the internal mixer in the second step is 170 ℃, the banburying time of the internal mixer is 12min, the number of thin passes of the open mill in the third step is 16 times, the roller temperature of the open mill is controlled to be 70 ℃, the thickness of the insulating film extruded by the calender in the fourth step is controlled to be 3.0mm, the temperature of the calender is controlled to be 100 ℃, the temperature of the vulcanizing machine in the fifth step is controlled to be 120 ℃ during vulcanization treatment, and the vulcanizing time is 12 min.
Results of Performance test of the present example
Figure RE-GDA0003661818010000071
The insulating sheet has good tensile resistance, ageing resistance, high temperature resistance, no odor generation in the high-temperature use process, good shockproof and sealing performance and reasonable component preparation.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (9)

1. The utility model provides a car lithium cell is with multi-functional flexible insulating piece which characterized in that: the insulation sheet comprises the following components in parts by mass: 75-95 parts of ethylene propylene diene monomer, 60-80 parts of elastic polyurethane, 15-40 parts of reinforced rubber, 15-30 parts of butadiene rubber, 5-20 parts of calcined kaolin, 5-20 parts of polyethylene powder, 5-20 parts of white carbon black, 5-10 parts of sulfur powder, 2-10 parts of triallyl cyanurate, 2-10 parts of stearic acid, 5-15 parts of a coupling agent, 5-10 parts of a softening agent, 5-10 parts of zinc oxide, 1-5 parts of an anti-aging agent, 1-5 parts of an accelerator, 1-5 parts of tackifying resin, 1-5 parts of microcrystalline wax, 2-10 parts of a catalyst and 2-10 parts of a structure inhibitor.
2. The multifunctional flexible insulating sheet for the lithium battery of the automobile of claim 1, wherein: the insulation sheet specifically comprises the following components in parts by mass: 80 parts of ethylene propylene diene monomer, 70 parts of elastic polyurethane, 30 parts of reinforced rubber, 25 parts of butadiene rubber, 12 parts of calcined kaolin, 12 parts of polyethylene powder, 12 parts of white carbon black, 8 parts of sulfur powder, 8 parts of triallyl cyanurate, 8 parts of stearic acid, 10 parts of a coupling agent, 8 parts of a softening agent, 8 parts of zinc oxide, 3 parts of an anti-aging agent, 3 parts of an accelerator, 2 parts of tackifying resin, 2 parts of microcrystalline wax, 5 parts of a catalyst and 5 parts of a structure inhibitor.
3. The multifunctional flexible insulating sheet for the lithium battery of the automobile of claim 1, wherein: the thickness of insulating piece is 0.5-2.0mm, and the external diameter of insulating piece is 5-40mm, and the internal diameter is 1-20mm, coupling agent designs for silane coupling agent, the catalyst design is that organic titanium stings the mixture, the structural inhibitor design is diphenylmethane.
4. The processing technology of the multifunctional flexible insulating sheet for the automobile lithium battery is characterized in that: the preparation method of the insulating sheet comprises the following steps:
the method comprises the following steps: preparing raw materials according to parts by weight, mixing ethylene propylene diene monomer, reinforcing rubber, butadiene rubber, stearic acid, elastic polyurethane, polyethylene powder, triallyl cyanurate, a cross-linking agent and a coupling agent, and putting the mixture into an internal mixer for primary internal mixing;
step two: then adding calcined kaolin, sulfur powder, white carbon black, zinc oxide, an anti-aging agent, a softening agent, an accelerator, tackifying resin, microcrystalline wax, a catalyst and a structure inhibitor to complete an internal mixing process;
step three: discharging the rubber material obtained by banburying into an open mill by a banbury mixer, thinly passing the rubber material through three rollers in the open mill, and cutting the rubber material into block rubber blocks with certain sizes for later use after the thinly passing is finished;
step four: putting the blocky rubber blocks in the third step into a calender for calendering treatment to obtain an insulating film, and then, using a stretcher to perform thinning, widening and cutting on the insulating film extruded by the calender to obtain the insulating film with required thickness and width;
step five: adhering the insulating film obtained in the fourth step to gauze with the surface subjected to water removal treatment through a calender to form insulating cloth, vulcanizing the insulating cloth through a vulcanizing machine, and then stripping the gauze to obtain the vulcanized insulating film;
step six: and pressing the insulating film obtained by vulcanization treatment with the phenolic resin base plate through a mold press to obtain an insulating sheet finished product.
5. The processing technology of the multifunctional flexible insulating sheet for the lithium battery of the automobile according to claim 4, is characterized in that: in the first step, the preheating and banburying temperature of the banbury mixer is 50-60 ℃, and the banburying time of the banbury mixer is 2-6 min.
6. The processing technology of the multifunctional flexible insulating sheet for the lithium battery of the automobile according to claim 4, is characterized in that: and in the second step, the banburying temperature of the banbury mixer is 160-170 ℃, and the banburying time of the banbury mixer is 8-12 min.
7. The processing technology of the multifunctional flexible insulating sheet for the lithium battery of the automobile according to claim 4, wherein the processing technology comprises the following steps: in the third step, the thin passing times of the open mill are 12-16 times, and the roller temperature of the open mill is controlled to be 60-70 ℃.
8. The processing technology of the multifunctional flexible insulating sheet for the lithium battery of the automobile according to claim 4, is characterized in that: in the fourth step, the thickness of the insulating film extruded by the calender is controlled to be 1.0-3.0mm, and the temperature of the calender is controlled to be 80-100 ℃.
9. The processing technology of the multifunctional flexible insulating sheet for the lithium battery of the automobile according to claim 4, wherein the processing technology comprises the following steps: and in the step five, the temperature of the vulcanizing machine during the vulcanizing treatment is controlled at 120 ℃ at 100 ℃, and the vulcanizing time is 10-12 min.
CN202210339619.XA 2022-04-01 2022-04-01 Multifunctional flexible insulating sheet for automobile lithium battery and processing technology thereof Pending CN114702759A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102136326A (en) * 2010-12-20 2011-07-27 常熟市双华电子有限公司 Shock-proof insulation sheet
CN108178881A (en) * 2018-01-02 2018-06-19 马鞍山佳夫尼电气科技有限公司 A kind of odorless insulation sheet rubber of high temperature resistant
CN113930020A (en) * 2021-10-20 2022-01-14 杭州永腾橡塑实业有限公司 Damping ring and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102136326A (en) * 2010-12-20 2011-07-27 常熟市双华电子有限公司 Shock-proof insulation sheet
CN108178881A (en) * 2018-01-02 2018-06-19 马鞍山佳夫尼电气科技有限公司 A kind of odorless insulation sheet rubber of high temperature resistant
CN113930020A (en) * 2021-10-20 2022-01-14 杭州永腾橡塑实业有限公司 Damping ring and preparation method thereof

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