CN109572504B - Automobile seat - Google Patents

Automobile seat Download PDF

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Publication number
CN109572504B
CN109572504B CN201811450986.7A CN201811450986A CN109572504B CN 109572504 B CN109572504 B CN 109572504B CN 201811450986 A CN201811450986 A CN 201811450986A CN 109572504 B CN109572504 B CN 109572504B
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layer
heat storage
graphene
resin
heat
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CN109572504A (en
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徐冬春
蔺洪振
郝永波
高春华
雍婷婷
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Suzhou Cstar Graphene Inc
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Suzhou Cstar Graphene Inc
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/56—Heating or ventilating devices
    • B60N2/5678—Heating or ventilating devices characterised by electrical systems
    • 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
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal 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
    • B32B15/09—Layered products comprising a layer of metal comprising metal 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 comprising polyesters
    • 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
    • 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
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
    • B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/048—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/02—Synthetic macromolecular particles
    • B32B2264/0214—Particles made of materials belonging to B32B27/00
    • B32B2264/0292—Polyurethane particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/12—Mixture of at least two particles made of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/302—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Abstract

The invention discloses an automobile seat, which comprises a seat body and a graphene electrothermal film, wherein the graphene electrothermal film is used for supplying heat to the seat body and comprises a first insulating protective layer, a graphene heating layer, a second insulating protective layer and a conductor for electrifying the graphene heating layer; wherein the heat storage slow release layer is made of heat storage slow release slurry, the heat storage slow release slurry comprises heat storage filler and first resin, and the heat conductivity coefficient of the heat storage filler is 15-50 W.m‑1•K‑1(ii) a The automobile seat can be gradually heated at a constant speed in the using process and slowly cooled after power failure, meanwhile, the temperature of each part can be more uniform, and the situations of rapid temperature rise of the seat and discomfort of a human body caused by rapid temperature rise and rapid temperature reduction in the prior art due to rapid heating and cooling in the prior art are avoided.

Description

Automobile seat
Technical Field
The invention belongs to the technical field of seats, and particularly relates to an automobile seat.
Background
With the technological development in the field of vehicle transportation, people have higher and higher requirements on the riding comfort of vehicles, and the seat heating technology is also developed and gradually applied to the field of middle-high-end passenger vehicles. At present, the commonly used heating elements are materials such as metal resistance wires, metal foil film coatings and the like, and most of the materials are nickel-chromium alloys, however, for the nickel-chromium alloys, the following defects still exist at present: the electrical resistivity is low, the defects of low electrothermal conversion efficiency, low heating rate, no automatic constant temperature and power compensation function of a heating element, complex structure of an electrothermal system, large thermal inertia and the like exist; the carbon crystal materials which are popular in the market mainly use carbon nano tubes, carbon black and the like as fillers, and have the problems of short half life and short service life.
Graphene (Graphene) has many excellent physicochemical properties, is widely applied to energy storage materials, environmental engineering and sensitive sensing, has a wide potential application prospect, has become a focus of attention and a research hotspot all over the world at present, and is considered to be one of the best materials for preparing membrane materials due to the advantages of super-high thermal stability, chemical stability, mechanical stability, high light transmittance, high electron mobility and the like. The graphene electrothermal film has proper resistivity, ultra-fast heating rate, extremely high thermal conductivity and rapid heat dissipation capacity, almost no thermal inertia, and can rapidly conduct heat to other materials, which is difficult to achieve by carbon materials and metal materials with other structures, and is gradually applied to the heating field at present; however, formally because the graphite alkene electric heat membrane is super fast heating rate, high heat conductivity and quick heat-sinking capability can appear rapidly rising temperature and the phenomenon of rapid cooling after the outage in the use, the inhomogeneous phenomenon of heating film temperature can appear simultaneously, and this application scope that has also restricted graphite alkene electric heat membrane to a great extent.
For example, chinese patent CN108839593A discloses an electric vehicle seat with massage and graphene heating functions and a use method thereof, and describes that the seat protection skin layer is formed by extruding and bonding a base layer, a graphene heating sheet layer and a heat-conducting protection layer.
If china utility model patent CN207266746U again, it discloses a seat of graphite alkene heating, including chair panel, back, handrail and heating element, heating element locates one side of being close to the human body of seat, heating element includes graphite alkene heating film, graphite alkene heating film divide into multilayer structure, from last to including PET film, electrode, graphite alkene heating film and PET film down, graphite alkene heating film is equipped with the port with outer power connection, still be equipped with control terminal on the seat, control terminal is connected with graphite alkene heating film electricity for control heating temperature and timing.
Still like chinese utility model patent CN207311207U, wherein disclose a PTC graphene seat heating pad, including base film, conductive electrode, PTC graphene heating coating, packaging film, fabric layer and binding post, base film, packaging film and fabric layer set gradually from bottom to top, conductive electrode and PTC graphene heating coating set up between base film and the packaging film, PTC graphene heating coating passes through the conductive electrode with binding post connects.
Although the above-mentioned patent documents utilize the ultra-strong heating capability of graphene, they also suffer from their own drawbacks, namely, rapid temperature rise and rapid temperature drop after power failure during use, and non-uniform temperature of the heat generating film, and thus, those skilled in the art are eagerly looking for a solution to the above-mentioned problems.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an improved automobile seat.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a car seat comprises a seat body and a graphene electrothermal film used for supplying heat to the seat body, wherein the graphene electrothermal film comprises a first insulating protective layer, a graphene heating layer, a second insulating protective layer and a conductor used for electrifying the graphene heating layer, and further comprises a heat storage slow release layer positioned between the first insulating protective layer and the graphene heating layer; the heat storage slow release layer is made of heat storage slow release slurry, the heat storage slow release slurry comprises heat storage filler and first resin, and the heat conductivity coefficient of the heat storage filler is 15-50 W.m-1·K-1。
According to some preferred aspects of the present invention, the heat storage filler has a thermal conductivity of 20 to 40 W.m-1·K-1。
According to some preferred aspects of the present invention, the heat storage filler has a specific heat capacity of 300--1·Kg-1. More preferably, the specific heat capacity of the heat storage filler is 400-1100 J.K-1·Kg-1. Further preferably, the specific heat capacity of the heat storage filler is 400-1000 J.K-1·Kg-1。
According to some specific and preferred aspects of the present invention, the heat storage filler is a combination of one or more selected from the group consisting of alumina particles, white carbon black particles, and zinc oxide particles.
According to some preferred aspects of the invention, the heat storage slow release slurry comprises, by mass, 10-30 parts of heat storage filler, 10-40 parts of first resin, 1-30 parts of solvent and 0-10 parts of first auxiliary agent.
According to some specific and preferred aspects of the present invention, the first resin is a combination of one or more selected from the group consisting of an aqueous polyurethane resin, an aqueous acrylic resin, an aqueous alkyd resin, an epoxy resin, a phenolic resin, and a silicone-acrylic resin.
According to some specific and preferred aspects of the present invention, the first auxiliary agent is a combination of one or more selected from a dispersant, an antifoaming agent, a pH adjuster, and a thickener.
According to some specific aspects of the present invention, the dispersant is one or more selected from polyvinylpyrrolidone, sodium polyacrylate, potassium polyacrylate, sodium polycarboxylate and polyoxyethylene modifier; the defoaming agent is one or more selected from polysiloxane defoaming agent, organic silicon defoaming agent and silicone defoaming agent; the pH regulator is one or more selected from dimethylethanolamine and diethylethanolamine; the thickener is one or more selected from polyurethane associated thickener, methyl hydroxypropyl cellulose and polyacrylic acid thickener.
According to some specific and preferred aspects of the present invention, the thermal storage slow-release slurry is prepared by the following method: weighing the raw materials according to a formula, mixing the heat storage filler, the solvent and the first resin, then adding the first auxiliary agent, mixing to form slurry, and grinding the slurry until the particle size is below 50 mu m. According to some specific aspects of the invention, the solvent is deionized water.
According to some preferred aspects of the present invention, the thickness of the heat accumulation slow-release layer is 1 to 1000 μm.
According to some preferred aspects of the present invention, the graphene electrothermal film further includes a heat reflection layer between the second insulating protection layer and the graphene heating layer. According to a specific aspect of the present invention, the heat reflecting layer is located between the conductor and the second insulating protective layer, the heat reflecting layer, the conductor, and the graphene heating layer are sequentially stacked.
According to some preferred aspects of the present invention, the heat reflecting layer has a thickness of 1 to 500 μm.
According to some preferred aspects of the present invention, the heat reflecting layer is made of a metal aluminum foil. According to some specific aspects of the present invention, the surface of the metal aluminum foil is subjected to an insulation treatment.
According to some preferred aspects of the present invention, the graphene heating layer is made of a graphene conductive ink, and the graphene conductive ink comprises, by mass, 20 to 60 parts of a graphene slurry, 10 to 40 parts of a second resin, and 0 to 10 parts of a second auxiliary agent, wherein the graphene slurry is an aqueous slurry prepared by dispersing thin-layer graphene having up to 5 layers in water.
According to some specific aspects of the present invention, the graphene slurry has a solid content of 1-20%.
According to some preferred aspects of the present invention, the graphene heating layer has a thickness of 1 to 500 μm.
According to some specific and preferred aspects of the present invention, the second resin is a combination of one or more selected from the group consisting of an aqueous polyurethane resin, an aqueous acrylic resin, an aqueous alkyd resin, an epoxy resin, a phenolic resin, and a silicone-acrylic resin.
According to some specific and preferred aspects of the present invention, the second auxiliary agent is a combination of one or more selected from a dispersant, an antifoaming agent, a pH adjuster, and a thickener.
According to some specific and preferred aspects of the present invention, the material of the second insulating protection layer is one or more selected from the group consisting of PET film, PE film, PVC film, EVA film, PI film, and FEP film.
According to some particular aspects of the invention, the dispersant is polyethylene oxide; the defoaming agent is one or a combination of a plurality of silicone defoaming agents, organic silicon defoaming agents and silicone defoaming agents; the PH regulator is dimethylethanolamine and/or diethylethanolamine; the thickening agent is polyacrylate thickening agent DN-2222.
In some embodiments of the present invention, the conductor may be composed of a silver paste carrier fluid and/or a copper foil, including but not limited to the above specific kinds, as long as it can be applied to the graphene electrothermal film of the present invention and can supply power to the graphene heating layer.
According to some preferred aspects of the present invention, the number of the graphene heating layers is N, the number of the conductors is the same as that of the graphene heating layers, the number of the heat accumulation slow release layers is N or more, at least one of the conductors, the number of the graphene heating layers and the number of the heat accumulation slow release layers are an intermediate layer, N intermediate layers are provided between the first insulating protective layer and the second insulating protective layer, and N is a positive integer of 2 or more.
In some embodiments of the present invention, the intermediate layer may include, but is not limited to, a layer of the conductor, a layer of the graphene heating layer, a layer of the thermal storage slow release layer, a layer of the conductor, and a layer of the graphene heating layer stacked in sequence.
In some embodiments of the present invention, the intermediate layer may include, but is not limited to, a layer of the thermal storage slow release layer, a layer of the conductor, a layer of the graphene heating layer, and a layer of the thermal storage slow release layer.
According to some specific and preferred aspects of the present invention, the graphene electrothermal film may be coated on a seat plate or a back plate of an automobile seat. Specifically, a seat cushion or a back cushion made of other materials can be coated on the outer layer of the graphene electrothermal film.
In the invention, the heat storage slow release layer is used for absorbing and storing heat by utilizing the heat storage filler contained in the heat storage slow release layer, and then gradually transferring heat outwards, and simultaneously transferring the heat more uniformly.
In the invention, the description of "first and second" is only for convenience of description, so as to avoid confusion and avoid distinguishing between sequences.
In the invention, heat generated by the graphene heating layer is transmitted to the part of a seat and/or a backrest of a person on the seat through the first insulating protection layer.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages:
the automobile seat comprises the graphene electrothermal film for supplying heat to the seat body, the heat storage slow release slurry is prepared by selecting the specific heat storage filler, and then the heat storage slow release layer in the graphene electrothermal film structure is formed, so that the graphene electrothermal film is heated up gradually at a constant speed in the using process and is cooled down slowly after power failure, the automobile seat is endowed with the functions of continuously and stably heating up and slowly cooling, and meanwhile, the temperature of each part can be more uniform, so that the condition of discomfort of a human body caused by rapid rise of the seat temperature and excessive cooling due to excessive heating and cooling in the prior art is avoided.
Drawings
Fig. 1 is a schematic cross-sectional view of a graphene electrothermal film according to embodiment 1 of the present invention, wherein layers are stacked one on another;
fig. 2 is a schematic top view of a graphene electrothermal film according to embodiment 1 of the present invention (with a first insulating protective layer hidden, the uppermost layer is a thermal storage slow release layer, and the other layers are below the uppermost layer);
FIG. 3 is a schematic view of temperature measurement points during heating in example 1 of the present invention;
FIG. 4 is a graph showing temperature rise and fall curves of the heat storage slow release layer in example 1 of the present invention without the heat storage filler (series 1) and with the heat storage filler (series 2);
wherein, 1, a graphene electrothermal film; 11. a first insulating protection layer; 12. a heat storage slow release layer; 13. a graphene heating layer; 14. a conductor; 15. a heat reflective layer; 16. a second insulating protective layer; 161. a slot; 17. an external conductor; 171. and an external terminal.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples; it is to be understood that these embodiments are provided to illustrate the general principles, essential features and advantages of the present invention, and the present invention is not limited in scope by the following embodiments; the implementation conditions used in the examples can be further adjusted according to specific requirements, and the implementation conditions not indicated are generally the conditions in routine experiments.
In the following, all starting materials are either commercially available or prepared by conventional methods in the art, unless otherwise specified.
Example 1
The embodiment provides an automobile seat, which comprises a seat body and a graphene electrothermal film for supplying heat to the seat body.
As shown in fig. 1-2, the graphene electrothermal film 1 includes a first insulating protection layer 11, an intermediate layer and a second insulating protection layer 16, which are arranged from top to bottom, wherein the intermediate layer has a plurality of layers uniformly distributed between the first insulating protection layer 11 and the second insulating protection layer 16;
the middle layer comprises a heat storage slow release layer 12, a graphene heating layer 13, a conductor 14 and a heat reflection layer 15, wherein the heat storage slow release layer 12, the graphene heating layer 13, the conductor 14 and the heat reflection layer are arranged from top to bottom, and the conductor 14 is used for electrifying the graphene heating layer 13. In this example, the heat generated by the graphene heating layer 13 is transmitted to the seat body through the first insulating protective layer 11 to heat the vehicle seat, so that a person seated in the vehicle seat can feel comfortable in a cold environment.
In this example, an external conductor 17 is further disposed on the second insulating protection layer 16, the external conductor 17 may be formed by coating a metal carrier fluid, such as a silver paste carrier fluid, on the second insulating protection layer 16, and the external conductor 17 is used for conducting the conductor 14 with an external power source so as to supply power to the graphene heating layer 13. Further, two external terminals 171 are provided on the external conductor 17, for example, for connecting an external power source. In other embodiments, the external conductor 17 may be coated with a silver paste carrier fluid simultaneously with the conductor 14 and formed as a unitary body.
In this embodiment, a plurality of slots 161 may be further formed in the second insulating protection layer 16, which may enable the entire graphene electrothermal film 1 to have a certain expansion space, so that the graphene electrothermal film 1 has better flexibility, and delamination and damage of the graphene electrothermal film 1 due to partial folding or bending are avoided.
Specifically, the heat storage slow release layer 12 is made of heat storage slow release slurry, the thickness of the heat storage slow release layer is about 100 μm, and the heat storage slow release slurry contains alumina particles (the heat conductivity coefficient is about 26-35 W.m)-1·K-1The specific heat capacity is about 850-900 J.K-1·Kg-1)30 parts of waterborne polyurethane resin and 20 parts of water; auxiliary agent: 0.5 part of polyacrylic acid sylvite, 0.2 part of organic silicon defoamer, 0.3 part of diethyl ethanolamine and 1 part of polyacrylic acid thickener. The heat storage slow release slurry is prepared by the following method: weighing the raw materials according to the formula, mixing the alumina particles, water and waterborne polyurethaneMixing the resins, adding potassium polyacrylate, an organic silicon defoamer, diethylethanolamine and a polyacrylic thickener, mixing to form slurry, and grinding the slurry until the particle size is below 50 mu m to obtain the resin.
Specifically, in this example, the first insulating protective layer 11 and the second insulating protective layer 16 are made of PET films, respectively.
Specifically, in this example, the graphene heating layer 13 is made of a graphene conductive ink, and the thickness of the graphene heating layer 13 is about 20 μm; the graphene conductive ink comprises 50 parts of graphene slurry and 30 parts of waterborne polyurethane resin in parts by mass; auxiliary agent: 0.5 part of polyoxyethylene, 0.5 part of organic silicon defoamer, 0.3 part of diethylethanolamine and 5 parts of polyacrylate thickener DN-2222; firstly, mixing graphene slurry with waterborne polyurethane resin, uniformly stirring, adding an auxiliary agent, mixing to form an ink matrix, and repeatedly rolling, dispersing and grinding the ink matrix until the particle size is below 50 mu m to prepare the graphene conductive ink; the graphene slurry is an aqueous slurry with solid content of about 10% prepared by dispersing thin graphene layers with the number of layers within 5 in water;
specifically, in this example, the conductor 14 for energizing the graphene heating layer 13 is a silver paste carrier fluid, and the silver paste carrier fluid is flatly coated on the heat reflection layer 15.
Specifically, in this example, the heat reflecting layer 15 is made of a metal aluminum foil subjected to surface insulation treatment and has a thickness of about 50 μm.
In this example, the preparation method of the graphene electrothermal film comprises the following steps:
(1) preparing graphene conductive ink according to the method;
(2) preparing heat storage slow release slurry according to the method;
(3) adhering a metal aluminum foil on the inner surface of the second insulating protection layer 16 to form a heat reflection layer 15;
(4) flatly coating a silver paste current carrier on the heat reflecting layer 15 to form a conductor 14;
(5) coating the graphene conductive ink prepared in the step (1) on the surfaces of the conductor 14 and the heat reflecting layer 15 (the conductor 14 covers part of the surface of the heat reflecting layer 15), and then carrying out sun-drying and drying treatment to form a graphene heating layer 13;
(6) and (3) uniformly coating the heat storage slow release slurry prepared in the step (2) on the graphene heating layer 13, airing or drying to form a heat storage slow release layer 12, and finally pressing the first insulating protection layer 11 on the heat storage slow release layer 12 for packaging to obtain the graphene electric heating film 1.
Experiment: when the working voltage of the graphene electrothermal film 1 is 36V, by testing and comparing the seat heating condition of the heat accumulation slow release layer without the aluminum oxide particles, the temperature (temperature measurement point during heating as shown in fig. 3) at each position in table 1 at different time and the temperature rise and fall comparison curve shown in fig. 4 are obtained. From table 1 we can see that: the heat accumulation slow release layer has good effect, gradually heats up, and the temperature difference change of the whole area of the graphene electrothermal film is very small, and heats up synchronously. In fig. 4, the heating time is 500s, and the heating is suspended after 500s, so that the temperature rising and falling speed is delayed to a certain extent along with the change of time when the heat storage slow release layer added with the alumina particles exists, and particularly the temperature falling speed is prolonged by at least 3-4min in the process of temperature reduction.
TABLE 1
Figure BDA0001886663370000081
Example 2
The present embodiment provides an automobile seat, which is different from embodiment 1 in that:
the heat storage slow release layer is made of heat storage slow release slurry, the thickness of the heat storage slow release layer is about 120 mu m, and the heat storage slow release slurry contains white carbon black particles (the heat conductivity coefficient is about 27 W.m)-1·K-1The specific heat capacity is about 745 J.K-1·Kg-1)25 parts of water-based acrylic resin 20 parts and water 20 parts; auxiliary agent: 0.5 part of polyacrylic acid sylvite, 0.2 part of polysiloxane defoaming agent, 0.3 part of diethyl ethanolamine and 1 part of polyacrylic acid thickening agent. The heat-accumulating slow-release slurry is prepared byThe preparation method comprises the following steps: weighing the raw materials according to a formula, mixing the white carbon black particles, water and water-based acrylic resin ester, then adding potassium polyacrylate, polysiloxane defoaming agent, diethyl ethanolamine and polyacrylic acid thickening agent, mixing to form slurry, and grinding the slurry until the particle size is below 50 mu m.
The graphene heating layer is formed by graphene conductive ink, and the thickness of the graphene heating layer is about 25 μm; the graphene conductive ink comprises 50 parts of graphene slurry and 30 parts of water-based acrylic resin in parts by mass; auxiliary agent: 0.5 part of polyoxyethylene, 0.5 part of organic silicon defoamer, 0.3 part of diethylethanolamine and 5 parts of polyacrylate thickener DN-2222; firstly, mixing graphene slurry with water-based acrylic resin, uniformly stirring, adding an auxiliary agent, mixing to form an ink matrix, and repeatedly rolling, dispersing and grinding the ink matrix until the particle size is below 50 mu m to prepare the graphene conductive ink; the graphene slurry is an aqueous slurry with solid content of about 10% prepared by dispersing thin graphene layers with the number of layers within 5 in water;
the heat reflecting layer is made of a metal aluminum foil subjected to surface insulation treatment and has a thickness of about 60 μm.
After the automobile seat manufactured by the embodiment is heated, the heat storage slow release layer has good heat storage slow release effect, the temperature is gradually increased, the temperature difference change of the whole area of the graphene electric heating film is very small, the temperature is basically and synchronously increased, and meanwhile, after the heating is stopped, the cooling speed of the seat is obviously slowed down, so that the discomfort of a human body caused by rapid increase of the temperature of the seat and excessive cooling due to excessive heating and cooling in the prior art is avoided.
Example 3
The present embodiment provides an automobile seat, which is different from embodiment 1 in that:
specifically, the heat storage slow release layer is made of heat storage slow release slurry, the thickness of the heat storage slow release layer is about 90 mu m, and the heat storage slow release slurry comprises zinc oxide particles (the heat conductivity coefficient is about 29.98 W.m)-1·K-1The specific heat capacity is about 490 J.K-1·Kg-1)28 portions of22 parts of waterborne polyurethane resin and 20 parts of water; auxiliary agent: 0.5 part of polyacrylic acid sylvite, 0.2 part of organic silicon defoamer, 0.3 part of diethyl ethanolamine and 1 part of polyacrylic acid thickener. The heat storage slow release slurry is prepared by the following method: weighing the raw materials according to a formula, mixing zinc oxide particles, water and waterborne polyurethane resin, then adding potassium polyacrylate, an organic silicon defoaming agent, diethyl ethanolamine and a polyacrylic acid thickening agent, mixing to form slurry, and grinding the slurry until the particle size is below 50 microns.
The first insulating protection layer and the second insulating protection layer are respectively made of PE films.
The graphene heating layer is made of graphene conductive ink, and the thickness of the graphene heating layer is about 30 μm; the graphene conductive ink comprises 48 parts of graphene slurry and 30 parts of waterborne polyurethane resin in parts by mass; auxiliary agent: 0.5 part of polyoxyethylene, 0.5 part of organic silicon defoamer, 0.3 part of diethylethanolamine and 5 parts of polyacrylate thickener DN-2222; firstly, mixing graphene slurry with waterborne polyurethane resin, uniformly stirring, adding an auxiliary agent, mixing to form an ink matrix, and repeatedly rolling, dispersing and grinding the ink matrix until the particle size is below 50 mu m to prepare the graphene conductive ink; the graphene slurry is an aqueous slurry with solid content of about 10% prepared by dispersing thin graphene layers with the number of layers within 5 in water;
specifically, in this example, the heat reflecting layer is made of a metal aluminum foil subjected to surface insulation treatment and has a thickness of about 100 μm.
After the automobile seat manufactured by the embodiment is heated, the heat storage slow release layer has good heat storage slow release effect, the temperature is gradually increased, the temperature difference change of the whole area of the graphene electric heating film is very small, the temperature is basically and synchronously increased, and meanwhile, after the heating is stopped, the cooling speed of the seat is obviously slowed down, so that the discomfort of a human body caused by rapid increase of the temperature of the seat and excessive cooling due to excessive heating and cooling in the prior art is avoided.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims (9)

1. A car seat comprises a seat body and a graphene electrothermal film used for supplying heat to the seat body, wherein the graphene electrothermal film comprises a first insulating protective layer, a graphene heating layer, a second insulating protective layer and a conductor used for electrifying the graphene heating layer;
the heat storage slow release layer is prepared from heat storage slow release slurry, the heat storage slow release slurry comprises, by mass, 10-30 parts of heat storage filler, 10-40 parts of first resin, 1-30 parts of solvent and 0-10 parts of first auxiliary agent, the heat storage filler is one or a combination of more of alumina particles, white carbon black particles and zinc oxide particles, and the heat conductivity coefficient of the heat storage filler is 15-50 W.m-1•K-1The first resin is one or more of waterborne polyurethane resin, waterborne acrylic resin, waterborne alkyd resin, epoxy resin, phenolic resin and silicone-acrylate resin, and the first auxiliary agent is one or more of dispersant, defoamer, pH regulator and thickener.
2. The car seat according to claim 1, wherein the heat storage filler has a thermal conductivity of 20 to 40 w.m-1•K-1。
3. The vehicle seat according to claim 1, wherein the heat storage filler has a specific heat capacity of 300-1200 J.K-1•Kg-1。
4. The car seat according to claim 1, wherein the heat storage slow-release slurry is prepared by the following method: weighing the raw materials according to a formula, mixing the heat storage filler, the solvent and the first resin, then adding the first auxiliary agent, mixing to form slurry, and grinding the slurry until the particle size is below 50 mu m.
5. The car seat according to claim 1, characterized in that the graphene heating layer has a thickness of 1-500 μ ι η; and/or the thickness of the heat storage slow release layer is 1-1000 mu m.
6. The automobile seat according to claim 1, wherein the graphene heating layer is made of a graphene conductive ink, and the graphene conductive ink comprises, by mass, 20-60 parts of a graphene slurry, 10-40 parts of a second resin, and 0-10 parts of a second auxiliary agent, wherein the graphene slurry is an aqueous slurry prepared by dispersing thin-layer graphene having up to 5 layers in water;
the second resin is one or more of waterborne polyurethane resin, waterborne acrylic resin, waterborne alkyd resin, epoxy resin, phenolic resin and silicone-acrylate resin; and/or the second auxiliary agent is one or more of a dispersing agent, a defoaming agent, a pH regulator and a thickening agent; and/or the first insulating protective layer and the second insulating protective layer are respectively made of one or more of PET (polyethylene terephthalate) film, PE (polyethylene) film, PVC (polyvinyl chloride) film, EVA (ethylene vinyl acetate) film, PI (polyimide) film and FEP (fluorinated ethylene propylene) film.
7. The car seat according to claim 1, wherein the number of the graphene heating layers is N, the number of the conductors is the same as that of the graphene heating layers, the number of the heat storage slow release layers is N or more, at least one of the conductors, the number of the graphene heating layers which is the same as that of the conductors, and at least one of the heat storage slow release layers form an intermediate layer, the number of the intermediate layers is N, and N is a positive integer of 2 or more, between the first insulating protection layer and the second insulating protection layer.
8. The car seat according to claim 1, characterized in that the thickness of the heat reflecting layer is 1-500 μm.
9. The car seat according to claim 1, wherein the heat reflecting layer is made of a metal aluminum foil, and the surface of the metal aluminum foil is subjected to an insulating treatment.
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CN110519914A (en) * 2019-08-28 2019-11-29 刘明炜 A kind of conductive structure and its preparation method and application
CN112665086B (en) * 2020-12-21 2022-09-30 苏州烯时代材料科技有限公司 Air purifier with heating function
GB2612057A (en) * 2021-10-20 2023-04-26 Haydale Graphene Ind Plc Heatable garment, fabrics for such garments, and methods of manufacture

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016103784A1 (en) * 2014-12-26 2016-06-30 リンテック株式会社 Thermally conductive adhesive sheet, production method therefor, and electronic device using same
CN105906832A (en) * 2016-06-29 2016-08-31 德阳烯碳科技有限公司 Preparation method of graphene-containing water-based electrothermal film
WO2017066244A1 (en) * 2015-10-12 2017-04-20 Novus Energy Technologies, Inc. Methods and systems for heating and cooling seats and other user items utilizing thermally conductive sheet with one more thermoelectric devices
CN106998597A (en) * 2017-03-20 2017-08-01 北京旭碳新材料科技有限公司 Electric heating device and device and preparation method thereof
CN107446408A (en) * 2017-07-18 2017-12-08 德阳烯碳科技有限公司 PTC graphenes heating ink and preparation method thereof and its heating film prepared
CN107592687A (en) * 2017-09-30 2018-01-16 力王新材料（惠州）有限公司 A kind of silica gel heating device of soakage function
CN207225146U (en) * 2017-09-28 2018-04-13 邵敬彪 A kind of car seat heating structure
CN207266746U (en) * 2017-12-12 2018-04-24 中科烯创科技发展有限公司 A kind of seat of graphene heating
CN207311207U (en) * 2017-08-14 2018-05-04 范道生 A kind of PTC graphenes seat heating pad and apply its heating seat

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017114174A1 (en) * 2015-12-31 2017-07-06 济南圣泉集团股份有限公司 Graphene electrothermal material and application thereof

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016103784A1 (en) * 2014-12-26 2016-06-30 リンテック株式会社 Thermally conductive adhesive sheet, production method therefor, and electronic device using same
WO2017066244A1 (en) * 2015-10-12 2017-04-20 Novus Energy Technologies, Inc. Methods and systems for heating and cooling seats and other user items utilizing thermally conductive sheet with one more thermoelectric devices
CN105906832A (en) * 2016-06-29 2016-08-31 德阳烯碳科技有限公司 Preparation method of graphene-containing water-based electrothermal film
CN106998597A (en) * 2017-03-20 2017-08-01 北京旭碳新材料科技有限公司 Electric heating device and device and preparation method thereof
CN107446408A (en) * 2017-07-18 2017-12-08 德阳烯碳科技有限公司 PTC graphenes heating ink and preparation method thereof and its heating film prepared
CN207311207U (en) * 2017-08-14 2018-05-04 范道生 A kind of PTC graphenes seat heating pad and apply its heating seat
CN207225146U (en) * 2017-09-28 2018-04-13 邵敬彪 A kind of car seat heating structure
CN107592687A (en) * 2017-09-30 2018-01-16 力王新材料（惠州）有限公司 A kind of silica gel heating device of soakage function
CN207266746U (en) * 2017-12-12 2018-04-24 中科烯创科技发展有限公司 A kind of seat of graphene heating

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