CN113942459A - Aerogel lining heat-preservation water-retaining film component for new energy automobile and preparation method thereof - Google Patents

Aerogel lining heat-preservation water-retaining film component for new energy automobile and preparation method thereof Download PDF

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Publication number
CN113942459A
CN113942459A CN202111384539.8A CN202111384539A CN113942459A CN 113942459 A CN113942459 A CN 113942459A CN 202111384539 A CN202111384539 A CN 202111384539A CN 113942459 A CN113942459 A CN 113942459A
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lining
film
silica aerogel
new energy
aerogel felt
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张云
丁荣华
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Panasian Microvent Tech Jiangsu Corp
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Panasian Microvent Tech Jiangsu Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/12—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor of articles having inserts or reinforcements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

The invention discloses an aerogel lining heat preservation and water retaining film component for a new energy automobile and a preparation method thereof.A high-density Polyethylene (PE) film is coated on the outer surface of a silica aerogel felt lining, and the silica aerogel felt lining is vacuum-packaged in the high-density Polyethylene (PE) film; during preparation, the double-cylinder high-density Polyethylene (PE) film rolls are simultaneously unreeled and respectively transmitted into an upper die and a lower die of a plastic package die; the manipulator grabs the silica aerogel felt lining and places the silica aerogel felt lining between the upper film and the lower film in the opening state of the plastic package mold; closing the plastic package mold, vacuumizing, and plastically packaging the silicon dioxide aerogel felt lining by heating. By the mode, the electric energy for the automobile air conditioner can be reduced, and a large amount of energy consumption of the air conditioner is saved, so that more electric energy is provided for the endurance mileage of the new energy automobile; the worry of the car owner about the endurance mileage of the new energy car is reduced, and the driving comfort is improved; the manufacturing method is low in cost, and the coating packaging process technology is suitable for large-batch industrial manufacturing.

Description

Aerogel lining heat-preservation water-retaining film component for new energy automobile and preparation method thereof
Technical Field
The invention relates to the field of composite materials, in particular to an aerogel lining heat-preservation water-retaining film component for a new energy automobile and a preparation method thereof.
Background
The vehicle related media 'automobile family' performs endurance mileage test on a model Y long endurance version vehicle type at the air temperature of 3 ℃. Before testing, the electric quantity of the vehicle is fully charged, the acceleration mode and the kinetic energy recovery are adjusted to be easy and standard, and the air conditioner is started to automatically supply air at 23 ℃. Through comprehensive tests of expressways and urban roads, the driving range of the vehicle in winter is only 356 km. The data is reduced by 238 km compared with the official endurance mileage, and the endurance mileage is shrunk by more than 40%.
After the vehicle enters winter, the driving mileage of the new energy vehicle is generally reduced by 20-30% by a few vehicle owners, the driving mileage of some vehicles is even reduced by more than half, and the number of queuing charging times is increased. The owner shows that after the electric automobile is used for two or three years, the original one-day charging is changed into one-day charging, the owner reduces the charging frequency of the automobile by not turning on the air conditioner, and similar situations can also occur in some new automobiles.
The influence of the air conditioning refrigeration of the new energy automobile on energy consumption is relatively small in summer, and the influence of the air conditioning heating on endurance is larger in winter. Because the temperature is low in winter, the self-heating of the battery in the low-temperature environment consumes certain electric quantity, and therefore the endurance mileage of the electric vehicle in winter can be reduced by about 10% -15% compared with that in summer under the condition that an air conditioner is not used. If the warm air is started again, the endurance mileage can be even reduced by 30%.
At present, the new energy automobile industry is in urgent need to invent a composite thermal insulation material to ensure the endurance capacity of the lithium ion power storage battery of the electric automobile and improve the competitiveness of the electric automobile in China and the property and life safety of consumers.
The silica aerogel felt is prepared by taking organic pre-oxidized fiber aerogel felt or inorganic fibers (high silica glass fibers, ceramic fibers, aluminum silicate, aluminum oxide and the like) as a base material and nano silica aerogel as a filler through a special process, compounding and drying, has the advantages of low heat conductivity coefficient, small density, good flexibility, high compression resistance, hydrophobicity, fire resistance and the like, has excellent sound insulation and shock absorption performances, and can replace traditional heat insulation materials such as glass fiber products, asbestos heat insulation felts, silicate fiber products and the like.
The aerogel is praised as one of 10 world-changing miraculous materials by the scientific community, not only has the reputation of very light solid in the world, but also has the advantages that each cubic centimeter is only 0.16mg, 99.8 percent of the interior is air, and the aerogel has very good heat-insulating and fireproof effects. The nano-pore super-thermal insulation performance based on the aerogel has great potential application value in the field of new energy.
However, due to the serious defects of nano-silica aerogel powder, inorganic short fibers and the like, the material limits the engineering application of the material in important fields of high-end equipment, automobiles, new energy automobiles and the like. The thermal conductivity of the silica aerogel blankets at different temperatures are statistically shown in the table below.
Figure DEST_PATH_IMAGE001
In addition, in order to solve the problems of powder falling and short fiber of the silica aerogel felt, the silica aerogel felt is directly coated with an adhesive or a coating, the adhesive or the coating is generally diluted by ethyl acetate, DMF solvent, acetone, toluene, xylene, alcohol, water and the like, in the process of coating the silica aerogel felt, the solvents such as ethyl acetate, DMF solvent, acetone, toluene, xylene, alcohol, water and the like simultaneously permeate into the nano-pores of the silica aerogel, thereby seriously affecting the microscopic shape of the heat insulation of the silica aerogel, and the static air in the nano-micropores of part of the silica aerogel is replaced by the solvents, the silica aerogel containing solvent has increased heat conductivity, and the following table shows the statistics of the heat conductivity of the commercial products coated with adhesive or paint directly on the silica aerogel felt as follows:
Figure 85827DEST_PATH_IMAGE002
the heat insulation performance of the direct gluing product is almost the same as that of traditional heat insulation materials such as XPE foaming materials, glass fiber products, asbestos heat insulation felts, silicate fiber products and the like, and the direct gluing product does not have obvious advantages.
Disclosure of Invention
The aerogel lining heat-preservation water-retaining film component for the new energy automobile and the preparation method thereof can solve the problem that the endurance mileage of the new energy automobile is greatly reduced due to large consumption of air conditioner energy consumption in summer and winter, have excellent performances of heat insulation, heat preservation, sound insulation and noise reduction, save a large amount of air conditioner energy consumption, and provide more electric energy for the endurance mileage of the new energy automobile; thereby prolonging the endurance mileage of the new energy automobile.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides an aerogel inside lining heat preservation manger plate membrane part for new energy automobile, includes: the high-density Polyethylene (PE) film is coated on the outer surface of the silica aerogel felt lining, and the silica aerogel felt lining is vacuum-packaged in the high-density Polyethylene (PE) film.
In a preferred embodiment of the present invention, an adhesive layer is attached to one side of the high density polyethylene PE film for fixing the water blocking film part.
In a preferred embodiment of the invention, the silica aerogel blanket liner comprises pre-oxidized fiber, ceramic fiber, Kevlar fiber, carbon fiber, high silica glass fiber, or glass fiber silica aerogel blanket.
In order to solve the technical problem, the invention adopts another technical scheme that: the preparation method of the aerogel lining heat-preservation water-retaining film component for the new energy automobile comprises the following steps:
1) preparing a double-cylinder high-density Polyethylene (PE) film roll and a silica aerogel felt lining;
2) unwinding the double-drum high-density Polyethylene (PE) film rolls simultaneously, and respectively transmitting the two rolls into an upper die and a lower die of the plastic package die;
3) the manipulator grabs the silica aerogel felt lining and places the silica aerogel felt lining between the upper film and the lower film in the opening state of the plastic package mold;
4) closing the plastic package mold, vacuumizing, and plastically packaging the silica aerogel felt lining by heating;
5) and (5) after demolding, cutting and checking to finish the preparation of the part.
In a preferred embodiment of the present invention, after the cutting in step 5) is completed, a robot is used to coat butyl rubber around the high density Polyethylene (PE) film, and a release paper convenient for storage and transportation is covered on the butyl rubber.
In a preferred embodiment of the invention, the silica aerogel blanket liner is die cut from a sheet of silica aerogel blanket to the desired shape.
In a preferred embodiment of the invention, the silica aerogel blanket sheet is a fiber reinforced silica aerogel blanket comprising pre-oxidized fibers, ceramic fibers, Kevlar fibers, carbon fibers, high silica glass fibers, or glass fibers.
The invention has the beneficial effects that: the invention fully utilizes the excellent performances of thermal insulation, heat preservation, sound insulation and noise reduction of the silicon dioxide aerogel felt, solves the environmental problem of powder falling by coating the silicon dioxide aerogel felt thin plate with the high-density polyethylene PE film, combines the advantages of good sealing performance, good elastic damping and sound insulation effects, good weather resistance and aging resistance, water resistance, chemical solvent resistance, oil stain resistance and the like of the high-density polyethylene PE film, and can effectively protect the electric device of the car door to effectively work; the new energy automobile using the water retaining membrane component can reduce the electric energy for an automobile air conditioner, save a large amount of energy consumption of the air conditioner and provide more electric energy for the endurance mileage of the new energy automobile; the worry of the car owner about the mileage of the new energy automobile is reduced, and the driving comfort is improved.
The fiber-reinforced silica aerogel felt such as coated and packaged pre-oxidized fiber, ceramic fiber, Kevlar fiber, carbon fiber, high silica glass fiber and glass fiber can work at the high and low temperature of minus 40 ℃ to 800 ℃ for a long time, and the thermal conductivity coefficient of the fiber-reinforced silica aerogel felt coated and packaged at the temperature of 25 ℃ is less than or equal to the leading index of 0.016W/(m.k); the manufacturing method is low in cost, the coating and packaging process technology is suitable for large-batch industrial manufacturing, and the competitiveness of electric automobiles in China is favorably improved while the property and life safety of consumers are guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural view of a preferred embodiment of the aerogel lining heat preservation and water retaining film component for the new energy automobile;
fig. 2 is a sectional view of the aerogel lining heat preservation and water blocking film component for the new energy automobile shown in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "front" and "back" and the like indicate orientations and positional relationships based on orientations and positional relationships shown in the drawings or orientations and positional relationships where the products of the present invention are conventionally placed in use, and are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Referring to fig. 1 and 2, an embodiment of the present invention includes:
the utility model provides an aerogel inside lining heat preservation manger plate membrane part for new energy automobile, includes: the silica aerogel felt comprises a silica aerogel felt lining 1 and a high-density Polyethylene (PE) film 2, wherein the high-density Polyethylene (PE) film 2 is coated on the outer surface of the silica aerogel felt lining 1, and the silica aerogel felt lining 1 is vacuum-packaged in the high-density Polyethylene (PE) film 2.
One side of the high-density polyethylene PE film 2 is connected with an adhesive layer for fixing the water retaining film component. As shown in fig. 2, the adhesive layer includes butyl rubber 3, the butyl rubber 3 is coated on the periphery of the high-density polyethylene PE film 2 by means of spot coating or full coating, and the surface of the butyl rubber 3 is covered with release paper 4 which is convenient for storage and transportation.
The silica aerogel blanket liner 1 comprises pre-oxidized fiber, ceramic fiber, Kevlar fiber, carbon fiber, high silica glass fiber or glass fiber silica aerogel blanket.
The silica aerogel felt is prepared by soaking silica sol in fibers such as pre-oxidized fibers, ceramic fibers, aramid fibers (Kevlar fibers), carbon fibers, high silica glass fibers, glass fibers and the like to form a wet gel sheet, and drying the fiber-reinforced wet gel sheet by a normal pressure method, a microwave method, a freezing method or a supercritical method.
The invention preferably uses the packaging technology that the high-density polyethylene PE film is used for coating the silica aerogel glass fiber felt sheet to manufacture the novel automobile water-retaining film component.
The aerogel lining heat preservation and water retaining membrane component for the new energy automobile fully utilizes the excellent heat insulation, heat preservation, sound insulation and noise reduction performances of the silica aerogel felt, solves the environmental problem of powder falling by coating the silica aerogel felt thin plate with the high-density Polyethylene (PE) thin film, combines the advantages of good sealing performance, good elastic shock absorption and sound insulation effects, good weather resistance and aging resistance, water resistance, chemical solvent resistance, oil stain resistance and the like of the high-density Polyethylene (PE) thin film, and can effectively protect the effective work of an electric device of an automobile door.
The new energy automobile using the aerogel lining heat-preservation water-retaining film component for the new energy automobile can reduce the electric energy for an automobile air conditioner, and a large amount of saved energy consumption of the air conditioner provides more electric energy for the endurance mileage of the new energy automobile; the worry of the car owner about the mileage of the new energy automobile is reduced, and the driving comfort is improved.
The invention also relates to a preparation method of the aerogel lining heat-preservation water-retaining film component for the new energy automobile, which comprises the following steps:
1) preparing a double-cylinder high-density Polyethylene (PE) film roll and a silica aerogel felt lining;
2) unwinding the double-drum high-density Polyethylene (PE) film rolls simultaneously, and respectively transmitting the two rolls into an upper die and a lower die of the plastic package die;
3) the manipulator grabs the silica aerogel felt lining and places the silica aerogel felt lining between the upper film and the lower film in the opening state of the plastic package mold;
4) closing the plastic package mold, vacuumizing, and plastically packaging the silica aerogel felt lining by heating;
5) and (5) after demolding, cutting and checking to finish the preparation of the part.
And 5) after finishing the cutting in the step 5), coating butyl rubber around the high-density Polyethylene (PE) film by using a manipulator, and covering release paper which is convenient to store and transport on the butyl rubber.
Wherein, the silica aerogel felt lining is formed by die cutting a silica aerogel felt sheet according to the required shape.
The silica aerogel felt sheet is a fiber-reinforced silica aerogel felt, and comprises pre-oxidized fibers, ceramic fibers, Kevlar fibers, carbon fibers, high silica glass fibers or glass fibers.
The fiber-reinforced silica aerogel felt coated and packaged by the method disclosed by the invention, such as pre-oxidized fibers, ceramic fibers, Kevlar fibers, carbon fibers, high-silica glass fibers, glass fibers and the like, can work at the high and low temperatures of-40-800 ℃ for a long time, and the thermal conductivity coefficient of the fiber-reinforced silica aerogel felt coated and packaged at 25 ℃ is less than or equal to a leading index of 0.016W/(m.k).
The manufacturing method is low in cost, the coating and packaging process technology is suitable for large-batch industrial manufacturing, and the new energy automobile industry in China can be powerfully supported to break through monopoly of foreign technical products and provide internationally leading domestic composite materials.
At present, the new energy automobile industry urgently needs the fiber-reinforced silica aerogel felt for the high-temperature-resistant, heat-insulating, flame-retardant, buffering and vibration reduction of the lithium ion power storage battery of the electric automobile to improve the working safety reliability and the performance advantage of the lithium ion power storage battery of the electric automobile, and improve the competitiveness of the electric automobile in China and the property and life safety of consumers.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (7)

1. The utility model provides an aerogel inside lining heat preservation manger plate membrane part for new energy automobile which characterized in that includes: the high-density Polyethylene (PE) film is coated on the outer surface of the silica aerogel felt lining, and the silica aerogel felt lining is vacuum-packaged in the high-density Polyethylene (PE) film.
2. The aerogel lining heat-preservation water-retaining film component for the new energy automobile as claimed in claim 1, wherein one side of the high density Polyethylene (PE) film is connected with an adhesive layer for fixing the water-retaining film component.
3. The aerogel lining heat-preservation water-retaining film component for the new energy automobile as claimed in claim 1, wherein the silica aerogel felt lining comprises pre-oxidized fiber, ceramic fiber, Kevlar fiber, carbon fiber, high silica glass fiber or glass fiber silica aerogel felt.
4. The preparation method of the aerogel lining heat-preservation water-retaining film component for the new energy automobile as claimed in any one of claims 1 to 3, characterized by comprising the following steps:
1) preparing a double-cylinder high-density Polyethylene (PE) film roll and a silica aerogel felt lining;
2) unwinding the double-drum high-density Polyethylene (PE) film rolls simultaneously, and respectively transmitting the two rolls into an upper die and a lower die of the plastic package die;
3) the silica aerogel felt lining is placed between the upper film and the lower film in the opening state of the plastic package mold;
4) closing the plastic package mold, vacuumizing, and plastically packaging the silica aerogel felt lining by heating;
5) and (5) after demolding, cutting and checking to finish the preparation of the part.
5. The preparation method of the aerogel lining heat-preservation water-retaining film component for the new energy automobile as claimed in claim 4, wherein after the cutting in step 5) is completed, butyl rubber is coated around the high density polyethylene PE film, and a release paper which is convenient for storage and transportation is covered on the butyl rubber.
6. The preparation method of the aerogel lining heat-preservation water-retaining film component for the new energy automobile as claimed in claim 4, wherein the silica aerogel felt lining is formed by die cutting a silica aerogel felt sheet according to a required shape.
7. The preparation method of the aerogel lining heat-preservation water-retaining film component for the new energy automobile as claimed in claim 4, wherein the silica aerogel felt sheet is a fiber-reinforced silica aerogel felt comprising pre-oxidized fibers, ceramic fibers, Kevlar fibers, carbon fibers, high silica glass fibers or glass fibers.
CN202111384539.8A 2021-11-22 2021-11-22 Aerogel lining heat-preservation water-retaining film component for new energy automobile and preparation method thereof Pending CN113942459A (en)

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