CN112853760B - Fireproof heat insulation felt, preparation method thereof, battery module and battery pack - Google Patents

Fireproof heat insulation felt, preparation method thereof, battery module and battery pack Download PDF

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Publication number
CN112853760B
CN112853760B CN202110035474.XA CN202110035474A CN112853760B CN 112853760 B CN112853760 B CN 112853760B CN 202110035474 A CN202110035474 A CN 202110035474A CN 112853760 B CN112853760 B CN 112853760B
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felt
heat insulation
resin
aerogel
fireproof heat
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CN112853760A (en
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金天辉
许进
刘伟德
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Jiangsu Zhongdi New Material Technology Co ltd
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Jiangsu Zhongdi New Material Technology Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
    • D06M15/41—Phenol-aldehyde or phenol-ketone resins
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
    • D06M11/47—Oxides or hydroxides of elements of Groups 5 or 15 of the Periodic Table; Vanadates; Niobates; Tantalates; Arsenates; Antimonates; Bismuthates
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
    • D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/08—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with halogenated hydrocarbons
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
    • D—TEXTILES; PAPER
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    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/30—Flame or heat resistance, fire retardancy properties
    • 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

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  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention relates to a fireproof heat insulation felt, a preparation method thereof, a battery module and a battery pack. The fireproof heat insulation felt comprises a base material and filler filled on the base material; the substrate is selected from a glass fiber needled felt; the filler comprises resin, aerogel, hollow glass beads and a flame-retardant component; the filler accounts for 50-90% of the weight of the fireproof heat insulation felt; the density of the fireproof heat insulation felt is 0.1g/cm 3 ～1.0g/cm 3 . The fireproof heat insulation felt has excellent heat insulation performance, flame retardance and fireproof performance, can effectively delay the spread of the existing fire behavior while realizing heat insulation and flame retardance, and even can realize self-extinguishment of the fire behavior.

Description

Fireproof heat insulation felt, preparation method thereof, battery module and battery pack
Technical Field
The invention relates to the field of new energy batteries, in particular to a fireproof heat insulation felt, a preparation method of the fireproof heat insulation felt, a battery module and a battery pack.
Background
New energy batteries, such as batteries in the field of automobile power, have become extremely important in order to operate the batteries at a suitable temperature, to prolong the service life of the batteries, and to ensure the safety of use.
In part of the technology, the flame retardant is sealed and stored inside, and the flame retardant is released when the battery leaks electricity, so that the overall flame retardant effect of the battery pack is achieved. However, the device may cause failure after vibration or long-term use, and safety cannot be guaranteed.
In addition, in the prior art, most of the flame-retardant heat-insulating materials or flame-retardant heat-insulating devices for new energy batteries are only limited to play a role of heat insulation and flame retardance, but cannot effectively control or extinguish the existing fire, and only can extinguish the existing fire after the existing fire is burnt.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The first purpose of the invention is to provide a fireproof heat insulation felt which has excellent heat insulation performance, flame retardance and fireproof performance, and can effectively delay the spread of the existing fire behavior and even realize self-extinguishment of the fire behavior while realizing heat insulation and flame retardance.
The second purpose of the invention is to provide a preparation method of the fireproof heat insulation felt.
A third object of the present invention is to provide a battery module and a battery pack using the above-described fire-resistant and heat-insulating felt.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
the fireproof heat insulation felt comprises a base material and filler filled on the base material;
the substrate is selected from a glass fiber needled felt;
the filler comprises resin, aerogel, hollow glass beads and a flame-retardant component;
the filler accounts for 50-90% of the weight of the fireproof heat insulation felt;
the density of the fireproof heat insulation felt is 0.1g/cm 3 ～1.0g/cm 3 。
Preferably, in the filler, the weight ratio of the resin, the aerogel, the hollow glass beads and the flame-retardant component is 1.
Preferably, the resin includes at least one of a phenol resin, a urethane resin, an acrylic resin, and a silicone rubber;
preferably, the resin is selected from phenolic resins.
Preferably, the flame retardant component comprises decabromodiphenylethane and antimony trioxide;
preferably, the weight ratio of the decabromodiphenylethane to the antimony trioxide is 2-8.
Preferably, the aerogel has a particle size of 1-5 μm and a density of 0.03g/cm 3～ 0.08g/cm 3 ；
Preferably, the aerogel is selected from hydrophilic aerogels; more preferably, the aerogel is a hydrophilic silica aerogel;
preferably, the particle size of the hollow glass beads is 5 to 20 μm.
Preferably, the base material accounts for 10-50% of the weight of the fireproof heat insulation felt.
The preparation method of the fireproof heat insulation felt comprises the following steps:
a) Adding aerogel, hollow glass beads and a flame retardant component into the uniformly dispersed resin dispersion liquid, and uniformly dispersing to obtain a filler dispersion liquid;
b) Fully soaking a base material in the filler dispersion liquid obtained in the step a), drying, and performing calendaring molding to obtain the fireproof heat insulation felt.
Preferably, the resin dispersion in step a) comprises a resin and a solvent;
the solvent comprises at least one of ethanol, n-butanol, xylene, ethyl acetate, MEK and DMF, preferably ethanol;
preferably, the resin dispersion liquid further contains a dispersant; the dispersant is selected from at least one of bike Disperbyk-2012, bike Disperbyk-2015 and bike Disperbyk-2055.
The battery module, the external thermal-insulated felt that coats of battery module is as above.
The battery pack comprises a plurality of battery modules.
Compared with the prior art, the invention has the following beneficial effects:
(1) The fireproof heat-insulation felt provided by the invention has excellent heat-insulation performance, flame retardance and fireproof performance, and can effectively delay the spread of the existing fire behavior and even realize self-extinguishment of the fire behavior while realizing heat insulation and flame retardance.
(2) The preparation method of the fireproof heat-insulation felt provided by the invention is simple and efficient, and is easy for industrial popularization.
(3) The battery module and the battery pack coated with the fireproof heat insulation felt provided by the invention have the advantages of stable performance, high use safety and long service life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a view illustrating a battery module coated with a fire-proof and heat-insulating felt according to an embodiment of the present invention;
fig. 2 is a view illustrating a battery pack assembled from battery modules each of which is covered with a fireproof heat insulating felt according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
According to one aspect of the invention, the invention relates to a fireproof heat insulation felt, which comprises a base material and a filler filled on the base material;
the substrate is selected from glass fiber needled felt;
the filler comprises resin, aerogel, hollow glass beads and a flame retardant component;
the filler accounts for 50 to 90 percent of the weight of the fireproof heat insulation felt;
the density of the fireproof heat insulation felt is 0.1g/cm 3 ～1.0g/cm 3 。
According to the invention, through the matching of the specific base material and the filler, the obtained fireproof heat-insulating felt has excellent heat-insulating property, flame retardance and fireproof property, and can effectively delay the spread of the existing fire behavior and even realize self-extinguishing of the fire behavior while realizing heat insulation and flame retardance.
In one embodiment, the filler is 50% to 90%, and optionally 55%, 60%, 65%, 70%, 75%, 80%, or 85% by weight of the fire and heat resistant mat.
The density of the fireproof heat-insulation felt is 0.1g/cm 3 ～1.0g/cm 3 And the excellent heat-insulating and flame-retardant effects can be realized.
Preferably, in the filler, the weight ratio of the resin, the aerogel, the hollow glass beads and the flame-retardant component is 1.
In one embodiment, the weight ratio of the resin, the aerogel, the hollow glass microspheres and the flame retardant component is 1.
The specific weight ratio of the resin, the aerogel, the hollow glass beads and the flame-retardant component is more favorable for effectively delaying the spread of the existing fire behavior and even realizing the self-extinguishing of the fire behavior while realizing the heat insulation and flame retardation of the obtained fireproof heat-insulating felt.
Preferably, the resin includes at least one of a phenol resin, a urethane resin, an acrylic resin, and a silicone rubber;
preferably, the resin is selected from phenolic resins.
Preferably, the flame retardant component comprises decabromodiphenylethane and antimony trioxide;
preferably, the weight ratio of the decabromodiphenylethane to the antimony trioxide is 2-8.
According to the invention, decabromodiphenylethane and antimony trioxide with a specific ratio are matched, so that a more excellent flame retardant effect is obtained.
In one embodiment, the weight ratio of decabromodiphenylethane to antimony trioxide is from 2 to 8, and can be selected from 3.
Preferably, the aerogel has a particle size of 1-5 μm and a density of 0.03g/cm 3～ 0.08g/cm 3 。
Preferably, the aerogels are selected from hydrophilic aerogels; more preferably, the aerogel is a hydrophilic silica aerogel.
The invention adopts the hydrophilic silica aerogel with specific particle size and density to be matched with other materials (resin, hollow glass beads and flame retardant components), and has more excellent heat insulation and flame retardant effects.
Preferably, the particle size of the hollow glass bead is 5-20 μm.
In one embodiment, the hollow glass microspheres have a particle size of 5 μm to 20 μm, and may be selected from 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, 16 μm, 17 μm, 18 μm, and 19 μm.
The hollow glass microspheres with specific particle sizes are matched with other material components, so that the flame retardant effect of the fireproof heat insulation felt is improved.
Preferably, the base material accounts for 10-50% of the weight of the fireproof heat insulation felt.
In one embodiment, the substrate comprises 10% to 50%, and optionally 15%, 20%, 25%, 30%, 35%, 40%, or 45% by weight of the fire and heat resistant blanket.
According to another aspect of the invention, the invention also relates to a preparation method of the fireproof heat insulation felt, which comprises the following steps:
a) Adding aerogel, hollow glass beads and a flame-retardant component into the uniformly dispersed resin dispersion liquid, and uniformly dispersing to obtain a filler dispersion liquid;
b) Fully soaking a base material in the filler dispersion liquid obtained in the step a), drying, and performing calendaring molding to obtain the fireproof heat insulation felt.
The preparation method of the fireproof heat-insulation felt provided by the invention is simple and efficient, and is easy for industrial popularization.
Preferably, the resin dispersion in step a) comprises a resin and a solvent;
the solvent comprises at least one of ethanol, n-butanol, xylene, ethyl acetate, MEK, and DMF, preferably ethanol;
preferably, the resin dispersion liquid further contains a dispersant; the dispersant is selected from at least one of Pic Disperbyk-2012, pic Disperbyk-2015 and Pic Disperbyk-2055.
In one embodiment, the single battery module provided by the invention has a good flame-retardant and explosion-proof effect, and the flame of a battery circuit can be self-extinguished within 3 minutes in a short-circuit experiment.
As an embodiment of the present invention, a method for preparing a fireproof heat insulation felt includes the following steps:
1) Dissolving or diluting the resin by using a solvent, adding a dispersing agent, and uniformly dispersing;
preferably, the resin includes phenol resin, urethane resin, acrylic resin, silicone rubber, or the like; the solvent comprises at least one of ethanol, n-butanol, xylene, ethyl acetate, MEK and DMF;
preferably, the resin uses thermoplastic phenolic resin powder (100 parts), and the solvent uses ethanol (200-600 parts);
2) Gradually adding the powder aerogel into the solution, and uniformly dispersing;
preferably, the aerogel has a particle size of 1-5 μm and a density of 0.03g/cm 3 ～0.08g/cm 3 ；
Preferably, the aerogel powder (10-100 parts) is hydrophilic aerogel powder;
3) Adding hollow glass beads into the solution, and uniformly dispersing;
preferably, the particle size of the hollow glass microballoons (10-100 parts) is 5-20 μm;
4) Adding 100-200 parts of decabromodiphenylethane and 25-50 parts of antimony trioxide into the solution, and uniformly dispersing;
5) Soaking the glass fiber needled felt in the solution 4) to fully soak the glass fiber needled felt;
6) Drying the soaked felt material obtained in the step 5) by using a coating machine;
7) And (4) heating, calendaring and molding the dried felt material obtained in the step (6) by using a calendar to obtain the flat fireproof heat insulation felt coiled material with the specified size.
According to another aspect of the invention, the invention also relates to a battery module, and the battery module is externally coated with the fireproof heat insulation felt.
According to another aspect of the present invention, the present invention also relates to a battery pack including a plurality of battery modules as described above.
The battery module and the battery pack coated with the fireproof heat insulation felt provided by the invention have the advantages of stable performance, high use safety and long service life.
The invention will be further explained with reference to specific examples.
Example 1
A preparation method of the fireproof heat insulation felt comprises the following steps:
1) Dissolving thermoplastic phenolic resin powder (100 parts) by using 400 parts of ethanol, adding 10 parts of dispersant Bik Disperbyk-2012, and uniformly dispersing;
2) Gradually adding 50 parts of silicon dioxide aerogel with the particle size of 1-5 mu m into the solution, and uniformly dispersing;
3) Adding 50 parts of hollow glass microspheres with the particle size of 5-20 microns into the solution, and uniformly dispersing;
4) Adding 150 parts of decabromodiphenylethane and 40 parts of antimony trioxide into the solution), and uniformly dispersing;
5) Soaking the glass fiber needled felt in the solution of 4) to fully soak the glass fiber needled felt;
6) Drying the soaked felt material obtained in the step 5) by using a coating machine;
7) And (3) heating, calendaring and molding the dried felt material obtained in the step (6) by using a calendar to obtain a flat fireproof heat insulation felt coiled material with a specified size.
The fireproof and heat-insulating felt prepared in example 1 was wrapped outside a battery module as shown in fig. 1. The battery pack shown in fig. 2 was assembled by arranging 15 of the above battery modules in an array.
Example 2
A preparation method of the fireproof heat insulation felt comprises the following steps:
1) Dissolving polyurethane resin powder (100 parts) by using 400 parts of ethanol, adding 10 parts of dispersant Bik Disperbyk-2015, and uniformly dispersing;
2) Gradually adding 100 parts of silicon dioxide aerogel with the particle size of 1-5 mu m into the solution, and uniformly dispersing;
3) Adding 10 parts of hollow glass microspheres with the particle size of 5-20 microns into the solution, and uniformly dispersing;
4) Adding 180 parts of decabromodiphenylethane and 70 parts of antimony trioxide into the solution), and uniformly dispersing;
5) Soaking the glass fiber needled felt in the solution of 4) to fully soak the glass fiber needled felt;
6) Drying the soaked felt material obtained in the step 5) by using a coating machine;
7) And (4) heating, calendaring and molding the dried felt material obtained in the step (6) by using a calendar to obtain the flat fireproof heat insulation felt coiled material with the specified size.
Example 3
A preparation method of the fireproof heat insulation felt comprises the following steps:
1) Dissolving acrylic resin powder (100 parts) by using 400 parts of ethanol, adding 10 parts of dispersant Pic Disperbyk-2055, and uniformly dispersing;
2) Gradually adding 10 parts of silicon dioxide aerogel with the particle size of 1-5 mu m into the solution, and uniformly dispersing;
3) Adding 30 parts of hollow glass microspheres with the particle size of 5-20 microns into the solution, and uniformly dispersing;
4) Adding 100 parts of decabromodiphenylethane and 25 parts of antimony trioxide into the solution), and uniformly dispersing;
5) Soaking the glass fiber needled felt in the solution of 4) to fully soak the glass fiber needled felt;
6) Drying the soaked felt material obtained in the step 5) by using a coating machine;
7) And (3) heating, calendaring and molding the dried felt material obtained in the step (6) by using a calendar to obtain a flat fireproof heat insulation felt coiled material with a specified size.
Test examples
1. Characterization of the Density of the fireproof thermal insulation felt
The densities of the fireproof heat insulation felts prepared in the examples 1 to 3 were measured as follows:
and (3) adopting a drainage method, and using a density tester to perform density test on the fireproof heat insulation felt, wherein the test method accords with the test standard of ASTM D792.
2. Flame-retardant and fireproof performance of battery module and battery pack
The flame retardant and fire resistant performance of the battery module and the battery pack assembled in example 1 was examined, specifically as follows:
and (4) carrying out short circuit on the positive electrode and the negative electrode of one battery in the battery pack by using iron nails, and observing the combustion condition of the whole battery pack. The battery pack without the fireproof heat insulation felt is observed within 1 minute, and the naked flame is quickly diffused to the whole battery pack. The battery pack protected by the fireproof heat insulation felt has strong smoke generation, but open fire is not found outside, the smoke generation is finished within 5 minutes, and the whole battery pack is completely unburned.
The fire retardant and the glass fiber felt form an integrated structure to prepare the fire-proof heat-insulation felt, the fire-proof heat-insulation felt naturally releases gas when the decomposition temperature of the fire retardant is exceeded, and no initiation device is needed, so that no structural change is caused by long-term use or vibration, and the fire-proof heat-insulation felt has higher safety. The fireproof heat-insulation felt obtained by the specific method has a remarkable and effective overall fireproof effect. The fireproof and heat-insulating felt obtained in example 2 and example 3 also has excellent fireproof effect.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (14)

1. The fireproof heat insulation felt is characterized by comprising a base material and a filler filled on the base material;
the substrate is selected from glass fiber needled felt;
the filler comprises resin, aerogel, hollow glass beads and a flame-retardant component;
the filler accounts for 50-90% of the weight of the fireproof heat insulation felt;
the density of the fireproof heat insulation felt is 0.1g/cm 3 ～1.0g/cm 3 ；
In the filler, the weight ratio of the resin, the aerogel, the hollow glass beads and the flame-retardant component is (1) from 0.1 to 1;
the flame retardant component comprises decabromodiphenylethane and antimony trioxide; the weight ratio of the decabromodiphenylethane to the antimony trioxide is 3-4.
2. The fire and heat insulating blanket of claim 1 wherein the resin comprises at least one of phenolic resin, polyurethane resin, acrylic resin and silicone rubber.
3. The fire-resistant insulation blanket of claim 1 wherein the resin is selected from the group consisting of phenolic resins.
4. The fireproof heat insulation felt according to claim 1, wherein the aerogel has a particle size of 1 to 5 μm and a density of 0.03g/cm 3 ~ 0.08g/cm 3 。
5. The fire-proof thermal insulation blanket as claimed in claim 4, wherein the aerogel is selected from hydrophilic aerogels.
6. The fire-proof thermal insulation blanket as claimed in claim 5, wherein the aerogel is a hydrophilic silica aerogel.
7. The fireproof and heat-insulating felt according to claim 1, wherein the hollow glass beads have a particle size of 5 to 20 μm.
8. The fire-resistant insulation blanket of claim 1 wherein the substrate comprises 10% to 50% by weight of the fire-resistant insulation blanket.
9. The method of making a fire and heat protection felt according to any one of claims 1 to 8, wherein the method comprises:
a) Adding aerogel, hollow glass beads and a flame-retardant component into the uniformly dispersed resin dispersion liquid, and uniformly dispersing to obtain a filler dispersion liquid;
b) Fully soaking a base material in the filler dispersion liquid obtained in the step a), drying, calendering and forming to obtain the fireproof heat insulation felt.
10. The method according to claim 9, wherein the resin dispersion in step a) comprises a resin and a solvent;
the solvent includes at least one of ethanol, n-butanol, xylene, ethyl acetate, MEK, and DMF.
11. The method of claim 10, wherein the solvent is ethanol.
12. The method of claim 10, wherein the resin dispersion further comprises a dispersant; the dispersant is selected from at least one of Pic Disperbyk-2012, pic Disperbyk-2015 and Pic Disperbyk-2055.
13. A battery module, wherein the battery module is externally coated with the fire-proof heat-insulating felt according to any one of claims 1 to 8.
14. A battery pack comprising a plurality of battery modules according to claim 13.
CN202110035474.XA 2021-01-12 2021-01-12 Fireproof heat insulation felt, preparation method thereof, battery module and battery pack Active CN112853760B (en)

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WO2024055287A1 (en) * 2022-09-16 2024-03-21 Dow Silicones Corporation A silicone-based fire protection sheet, its production process, and battery package having the sheet
CN115612162A (en) * 2022-10-12 2023-01-17 佛山仙湖实验室 Preparation method of novel fireproof heat-insulation glass fiber felt
CN117146649B (en) * 2023-08-17 2024-05-07 咸宁海威复合材料制品有限公司 Composite armor for low flame holding ship

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