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WO2024143313A1 - Stratifié ignifuge et son procédé de fabrication - Google Patents

Stratifié ignifuge et son procédé de fabrication Download PDF

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Publication number
WO2024143313A1
WO2024143313A1 PCT/JP2023/046533 JP2023046533W WO2024143313A1 WO 2024143313 A1 WO2024143313 A1 WO 2024143313A1 JP 2023046533 W JP2023046533 W JP 2023046533W WO 2024143313 A1 WO2024143313 A1 WO 2024143313A1
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WO
WIPO (PCT)
Prior art keywords
nonwoven fabric
fire
functional particles
resistant laminate
synthetic resin
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.)
Ceased
Application number
PCT/JP2023/046533
Other languages
English (en)
Japanese (ja)
Inventor
嗣典 島
史典 江草
由紀乃 遠藤
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.)
Tigers Polymer Corp
Original Assignee
Tigers Polymer Corp
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
Priority claimed from JP2022209196A external-priority patent/JP2024093063A/ja
Priority claimed from JP2023017237A external-priority patent/JP2024112340A/ja
Priority claimed from JP2023148019A external-priority patent/JP2025040992A/ja
Priority claimed from JP2023213822A external-priority patent/JP2025097575A/ja
Priority claimed from JP2023217541A external-priority patent/JP2025101010A/ja
Application filed by Tigers Polymer Corp filed Critical Tigers Polymer Corp
Publication of WO2024143313A1 publication Critical patent/WO2024143313A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/067—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of fibres or filaments
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • 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

  • Secondary batteries which can be charged and discharged, are used in a variety of applications, including electric vehicles, home appliances, and mobile phones. Secondary batteries typically consist of an electrode assembly in which a positive electrode and a negative electrode are stacked and wound with a separator between them, and the electrode assembly is sealed in a container together with an electrolyte. In applications such as automobiles, it is common to electrically connect multiple such secondary batteries and use them as an integrated battery pack.
  • Patent Document 1 discloses a technique for directing gas released from a gas release valve of a secondary battery constituting a battery pack in a predetermined direction by an exhaust gas hose.
  • the gas released from the safety valve (gas release valve) of the secondary battery that constitutes the battery pack is extremely hot, and sometimes bursts into flames when released. Therefore, an exhaust gas hose such as that described in Patent Document 1 must be able to withstand high temperatures and be fireproof. In addition, considering the thermal effects on surrounding components, it is preferable that the area around the safety valve is insulated.
  • a battery pack is an assembly of many parts and components, and has a complex structure, so compactness is also required.
  • Ceramic materials are known to have high fire resistance and heat insulation properties, but they are rigid and difficult to make into thin components with complex shapes. This has led to a demand for a material that is both fire-resistant and insulating, so that a compact fire-resistant and insulating structure can be realized around the safety valve of a secondary battery.
  • the functional particles are aluminum hydrogen phosphite particles (invention 4).
  • the aluminum foil of the aluminum glass cloth and the nonwoven fabric are laminated and integrated so as to be adjacent to each other (invention 5).
  • the present invention also relates to a battery pack comprising secondary batteries each provided with a safety valve, in which the fire-resistant laminate according to any one of the first to fourth inventions is disposed so that the nonwoven fabric faces the safety valve (a sixth invention).
  • the present invention also relates to a method for producing a fire-resistant laminate of the second invention, which includes a first step of heating the synthetic resin to melt it or dissolving it in a solvent to liquefy it, and dispersing the functional particles in the liquefied synthetic resin, and a second step of spinning the liquid synthetic resin having the functional particles dispersed therein by a melt-blowing method or an electrospinning method to form long fibers into a nonwoven fabric, subsequent to the first step, in which the nonwoven fabric is formed directly on the surface of the aluminum glass cloth in the second step to be integrated with the aluminum glass cloth (seventh invention).
  • a large amount of functional particles can be supported on the nonwoven fabric, which further improves the heat insulation and fire resistance.
  • the functional particles are less likely to fall off the nonwoven fabric and contaminate the surroundings.
  • the thermal expansion of the functional particles occurs quickly, and the heat insulating property and fire resistance are further improved.
  • the fire resistance of the fire-resistant laminate is further improved.
  • the fire-resistant laminate can be efficiently produced by utilizing an electrospinning method.
  • FIG. 2 is a perspective view showing the appearance of a secondary battery.
  • FIG. 2 is a diagram showing the arrangement of a secondary battery, a gas exhaust guide, and the fire-resistant laminate of the first embodiment.
  • 1 is a schematic diagram showing a structure of a battery pack in which a gas exhaust guide and the fire-resistant laminate of the first embodiment are assembled;
  • FIG. 2 is a cross-sectional view showing a laminated structure of the fire-resistant laminate of the first embodiment.
  • FIG. 2 is a schematic diagram showing the structure of a nonwoven fabric used in the fire-resistant laminate of the first embodiment.
  • FIG. 2 is a schematic diagram showing the structure of a large diameter portion and a small diameter portion of a long fiber.
  • 1 is a micrograph showing the structure of an example of a nonwoven fabric.
  • FIG. 11 is a diagram showing a second arrangement example of the fire-resistant laminate in the battery pack.
  • FIG. 11 is a diagram showing a third example of the arrangement of the fire-resistant laminate in the battery pack.
  • FIG. 13 is a diagram showing a fourth example of the arrangement of the fire-resistant laminate in the battery pack.
  • FIG. 4 is a cross-sectional view showing the laminated structure of the fire-resistant laminate 40 of the first embodiment.
  • the fire-resistant laminate 40 includes an aluminum glass cloth 41 and a nonwoven fabric 1, which are laminated and integrated together.
  • the means of integration is not particularly limited, and the two may be integrated together using a pressure sensitive adhesive, a bonding agent, double-sided tape, or the like, or the nonwoven fabric 1 may be directly formed on the surface of the aluminum glass cloth 41 to integrate them, as described later.
  • the aluminum foil 412 of the aluminum glass cloth 41 and the nonwoven fabric 1 are laminated and integrated so as to be adjacent to each other, as in this embodiment.
  • the aluminum glass cloth 41 is made by laminating and integrating aluminum foil 412 and glass cloth 411.
  • Glass cloth is a cloth made by weaving glass fibers into a woven fabric.
  • any known means may be used, such as using an adhesive.
  • the nonwoven fabric 1 contained in the fire-resistant laminate 40 will be described in detail below.
  • the nonwoven fabric 1 carries fire-resistant functional particles 4, 4 having thermal expansion.
  • the fire-resistant functional particles 4, 4 having thermal expansion expand when heated, improving the heat insulating property of the nonwoven fabric 1.
  • the functional particles 4, 4 are fire-resistant and will not burn for a predetermined period of time even when exposed to high temperatures such as flames.
  • the expansion start temperature at which the functional particles 4, 4 start to expand is set to be higher than the temperature during normal operation of the secondary battery 10 described later, and the functional particles 4, 4 do not expand when the secondary battery is operating normally, but are set to expand when the nonwoven fabric 1 is exposed to a high temperature due to abnormal overheating of the secondary battery or the occurrence of a fire.
  • the preferred range of the expansion start temperature of the fire-resistant functional particles 4, 4 having thermal expansion can be set to 250°C to 400°C.
  • Examples of functional particles 4,4 that have thermal expansion properties include thermally expandable graphite and aluminum phosphite.
  • the functional particles 4,4 are inorganic particles that do not melt when exposed to high temperatures, and that retain their shape for a certain period of time (e.g., 10 minutes or more) even when exposed to high temperatures of, for example, 1500 degrees, and maintain their function as a fire-resistant insulating layer.
  • aluminum phosphite particles can maintain their shape for 60 minutes or more even when exposed to flames such as a gas burner.
  • the form in which the nonwoven fabric 1 used in the fire-resistant laminate 40 carries the thermally expandable functional particles 4, 4 is not particularly limited, and the functional particles may be carried by the fibers constituting the nonwoven fabric with a binder or the like.
  • the thermally expandable functional particles 4, 4 are supported so as to be integrated with the long fibers made of synthetic resin, as in the nonwoven fabric 1 of the embodiment shown in Fig. 5.
  • the functional particles are less likely to fall off and a large amount of functional particles can be easily supported.
  • the structure of the nonwoven fabric 1 according to the embodiment shown in FIG. 5 will now be described in detail.
  • the small diameter portions 3, 3 of the long fibers are monofilaments formed from the synthetic resin.
  • the synthetic resin is suitable for manufacturing long fibers by the melt-blowing method or the electrospinning method.
  • the synthetic resin is a resin that adheres to the functional particles described below.
  • polyurethane resin or polyvinyl chloride resin can be used as the synthetic resin that is the raw material for the long fibers.
  • the functional particles 4, 4 contained in the large diameter portion 2, 2 have thermal expansion and fire resistance. That is, in the nonwoven fabric 1 of this embodiment, particles having thermal expansion are used as functional particles.
  • particles having thermal expansion include thermally expandable microcapsules, thermally expandable graphite, and aluminum phosphite.
  • aluminum phosphite particles having thermal expansion include "APA-100" from Taihei Chemical Industry Co., Ltd.
  • aluminum phosphite particles aluminum hydrogen phosphite particles (such as "NSF” from Taihei Chemical Industry Co., Ltd.) can be preferably used. These particles have the property of expanding when heated to a predetermined temperature.
  • the fiber diameter Ds of the small diameter portion 3, 3 is equal to or smaller than the diameter Dp of the functional particles 4, 4 contained in the large diameter portion 2, 2.
  • the fiber diameter Ds of the small diameter portion 3, 3 and the diameter Dp of the functional particles 4, 4 may be substantially the same.
  • the diameter Dp of the functional particles 4, 4 refers to the volume average diameter.
  • the diameter Dp of the functional particles 4, 4 contained in the large diameter portion is typically 300 nanometers or more and 200 micrometers or less.
  • the fiber diameter Ds of the small diameter portion 3, 3 is preferably 1/100 or more of the diameter Dp of the functional particles 4, 4.
  • the nonwoven fabric 1 can be manufactured by applying the meltblowing method or the electrospinning method.
  • the liquid synthetic resin discharged from the spinning nozzle is stretched by centrifugal force, gravity, electrostatic force, etc. to become thin fibers. These thin fibers become the small diameter parts 3, 3 of the long fibers.
  • the functional particles 4, 4 are discharged from the nozzle together with the liquid synthetic resin, the part where the functional particles 4, 4 are gathered solidifies into a string-like or ball-like shape to become the large diameter parts 2, 2, while the excess synthetic resin is stretched to form the small diameter parts 3, 3, and the large diameter parts 2, 2 and the small diameter parts 3, 3 are strung together to form a continuous long fiber.
  • the long fibers that have been formed are solidified as the solvent evaporates and the temperature drops, and are deposited on the base of the spinning device, producing the nonwoven fabric 1.
  • the second step may be carried out using the aluminum glass cloth 41 as a substrate, and the nonwoven fabric 1 may be formed directly on the surface of the aluminum glass cloth 41 and integrated with the aluminum glass cloth 41 to produce a fire-resistant laminate.
  • the step of integrating the aluminum glass cloth 41 and the nonwoven fabric 1 can be omitted, making the nonwoven fabric 1 easier to handle.
  • the nonwoven fabric 1 by spinning the aluminum glass cloth 41 using an electrospinning method, if the nonwoven fabric 1 is formed on the surface of the aluminum foil, it can be charged using the aluminum foil, making it easier to carry out the electrospinning method.
  • Nonwoven Fabric Examples aluminum hydrogen phosphite "NSF" (average particle diameter 5 micrometers) was used as the functional particle, and a nonwoven fabric 1 was obtained in which the diameter of the large diameter parts 2,2 was about 2 to 10 micrometers (average diameter 6 micrometers) and the diameter of the small diameter parts 3,3 was about 0.5 to 1.5 micrometers (average diameter 0.9 micrometers).
  • the amount of functional particles 4,4 blended into the obtained nonwoven fabric 1 was about 100 g/m2. If a large number of long fibers are laminated, the amount of functional particles 4,4 blended per unit area in the nonwoven fabric 1 can be increased.
  • FIG. 7 shows a micrograph of the nonwoven fabric of the embodiment. In FIG. 7, only a small portion of the layers in the thickness direction of the nonwoven fabric is photographed so that the form of the fibers can be clearly seen. The same is true for FIGS. 8 and 9.
  • the above-mentioned second step was carried out using an electrospinning method with an aluminum glass cloth 41 as a substrate, and nonwoven fabric 1 was formed directly on the surface of the aluminum glass cloth 41 and integrated with the aluminum glass cloth 41.
  • a fire-resistant laminate 40 was obtained in which the nonwoven fabric 1 and the aluminum glass cloth 41 were well integrated, with the aluminum foil 412 of the aluminum glass cloth 41 and the nonwoven fabric 1 adjacent to each other.
  • Figure 3 shows a schematic structure of a battery pack 20 in which secondary batteries 10, 10 are stacked.
  • Figure 1 shows the external appearance of the secondary battery 10 incorporated into the battery pack 20.
  • Figure 2 shows the relative positions of the secondary battery 10, gas release guide 27, and fire-resistant laminate 40 in the battery pack.
  • a gas release guide 27 is provided to guide the gas released from the safety valve 15.
  • the specific shape of the gas release guide 27 is not particularly limited, but for example, as shown in Figures 2 and 3, it is shaped like a trough so as to face the safety valves 15, 15 arranged side by side.
  • the gas release guide may be in the form of a manifold having branched pipes, as described below.
  • the surface of the case that houses the battery pack that faces the safety valves 15, 15 may be used as the gas release guide.
  • the battery pack 20 can be housed in a battery case (not shown) and installed in a vehicle such as a hybrid car.
  • the fire resistance of the fire-resistant laminate 40 is further improved.
  • the fire-resistant laminate 40 is formed in a tubular shape with the nonwoven fabric 1 disposed inside the tube, and one end of the tube is attached to the safety valve 15 of the battery.
  • the tubular fire-resistant laminate 40 also serves to guide the gas released from the safety valve.
  • the fire-resistant laminate 40 may be formed in a branched tubular shape (manifold shape), with each branched tubular portion connected to the safety valves 15, 15.
  • the secondary battery 10 can be used in electric vehicles and hybrid vehicles, but the use of the battery or battery pack is not limited to automobiles.
  • the secondary battery can also be used in electric bicycles.
  • the secondary battery or battery pack may be used as a power source for trains, ships, and aircraft.
  • the secondary battery or battery pack may also be used as a backup power source for computers, an auxiliary storage battery for wind power generation equipment or solar power generation equipment, an auxiliary power source or backup power source for industrial equipment, and the like.
  • the fire resistant laminate 40 may be used in applications other than battery related applications.
  • the fire-resistant laminate 40 can be used as a part of the fire-resistant or fire-prevention structure of a building.
  • the fire-resistant laminate 40 may be used for fireproofing a portion where a long object such as a cable penetrates a fire-resistant wall of a building structure.
  • the fire-resistant laminate 40 can be used to cover a structure such as a wall surface or a pillar of a building to enhance the fire resistance or fire prevention of the building structure.
  • the long fibers contained in the nonwoven fabric 1 are simply in contact with each other at the intertwined portions, but the long fibers may be bonded to each other at the intertwined portions.
  • the large diameter portions 2, 2 may be stuck together at the intertwined portions, or three or more (preferably four or more) small diameter portions 3, 3 may be connected to one large diameter portion in appearance.
  • the small diameter portions 3, 3 are connected in a network shape between the large diameter portions 2, 2, making it easier to maintain the three-dimensional structure of the nonwoven fabric 1 and providing good breathability.
  • Nonwoven Fabric Example 2 8 is a micrograph showing the structure of the nonwoven fabric of Example 2, which was manufactured under different manufacturing conditions. The manufacturing conditions were adjusted so that the long fibers were thicker overall than in the above-mentioned Examples.
  • the synthetic resin is thermoplastic polyurethane resin (TPU), the functional particles are "NSF" (average particle size 5 micrometers), and the fabrication is performed by electrospinning, which are the same as in the above-mentioned Examples.
  • the diameter of the large diameter portions 2, 2 was approximately 2 to 15 micrometers (average diameter 8 micrometers), and the diameter of the small diameter portions 3, 3 was approximately 0.5 to 1.8 micrometers (average diameter 1.0 micrometer).
  • Nonwoven Fabric Example 3 9 is a micrograph showing the structure of the nonwoven fabric of Example 3, which was manufactured under different manufacturing conditions. Compared to the above-mentioned examples, the amount of functional particles was reduced, and the manufacturing conditions were adjusted.
  • the synthetic resin is thermoplastic polyurethane resin (TPU), the functional particles are "NSF" (average particle size 5 micrometers), and the fabrication is performed by electrospinning, which are the same as the above-mentioned examples.
  • the diameter of the large diameter portions 2, 2 was approximately 3 to 8 micrometers (average diameter 5 micrometers), and the diameter of the small diameter portions 3, 3 was approximately 0.3 to 1.0 micrometers (average diameter 0.6 micrometers). Also, in the nonwoven fabric of Example 3, there were portions where three or more small diameter portions extended so as to branch out from the large diameter portion.
  • the nonwoven fabrics of Examples 1, 2, and 3 were all flexible, and when exposed to hot air (approximately 800°C), the functional particles expanded to form a nearly non-breathable, fire-resistant, insulating layer, improving the insulating properties.
  • a single-layer nonwoven fabric containing thermally expandable functional particles is exemplified, but the nonwoven fabric may be a multi-layer nonwoven fabric having a layer that does not contain functional particles.
  • a two-layer nonwoven fabric may be formed by laminating an aramid fiber mesh material as a support layer on the above-mentioned nonwoven fabric.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un stratifié ignifuge qui présente d'excellentes propriétés de résistance au feu et d'isolation thermique, est flexible, et présente une excellente maniabilité. Ce stratifié ignifuge (40) est obtenu par inclusion et intégration d'un tissu de fibres de verre aluminisé (41) et un non-tissé (1). Dans le stratifié ignifuge (40), le non-tissé (1) porte des particules fonctionnelles ignifuges (4), (4) ayant une extensibilité thermique, et les propriétés d'isolation thermique du non-tissé (1) sont améliorées par la dilatation des particules fonctionnelles (4), (4) due au chauffage. Dans un bloc-batterie (2) dans lequel des batteries rechargeables (10), (10) pourvues d'une soupape de sécurité (15) sont assemblées, le stratifié ignifuge (40) peut être disposé sur le bloc-batterie (20) de telle sorte que le non-tissé (1) fait face à la soupape de sécurité (15).
PCT/JP2023/046533 2022-12-27 2023-12-26 Stratifié ignifuge et son procédé de fabrication Ceased WO2024143313A1 (fr)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP2022-209196 2022-12-27
JP2022209196A JP2024093063A (ja) 2022-12-27 2022-12-27 機能性不織布およびその製造方法
JP2023-017237 2023-02-08
JP2023017237A JP2024112340A (ja) 2023-02-08 2023-02-08 熱膨張性不織布およびその製造方法
JP2023148019A JP2025040992A (ja) 2023-09-13 2023-09-13 ２次電池
JP2023-148019 2023-09-13
JP2023213822A JP2025097575A (ja) 2023-12-19 2023-12-19 組電池用緩衝部材およびその製造方法
JP2023-213822 2023-12-19
JP2023-217541 2023-12-25
JP2023217541A JP2025101010A (ja) 2023-12-25 2023-12-25 耐火性積層体およびその製造方法

Publications (1)

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WO2024143313A1 true WO2024143313A1 (fr) 2024-07-04

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PCT/JP2023/046533 Ceased WO2024143313A1 (fr) 2022-12-27 2023-12-26 Stratifié ignifuge et son procédé de fabrication

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005082563A1 (fr) * 2004-02-26 2005-09-09 Nagoya Oilchemical Co., Ltd. Feuilles poreuse inafflamables; moulages de ces feuilles et absorbants acoustiques inaflammables pour automobiles
JP2008062413A (ja) * 2006-09-05 2008-03-21 Daiwa:Kk 断熱材製造方法と断熱材
JP2008542574A (ja) * 2005-06-08 2008-11-27 グループ インダストリアル カテンサ エス．アー． 難燃性フェルト材料
WO2021100813A1 (fr) * 2019-11-20 2021-05-27 積水化学工業株式会社 Matériau réfractaire à dilatation thermique pour bloc-batterie, feuille résistante au feu pour bloc-batterie, et bloc-batterie monté sur véhicule

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005082563A1 (fr) * 2004-02-26 2005-09-09 Nagoya Oilchemical Co., Ltd. Feuilles poreuse inafflamables; moulages de ces feuilles et absorbants acoustiques inaflammables pour automobiles
JP2008542574A (ja) * 2005-06-08 2008-11-27 グループ インダストリアル カテンサ エス．アー． 難燃性フェルト材料
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