JP7049951B2 - Laminate material - Google Patents

Description

The present invention relates to a laminated material which is excellent in thermal conductivity, insulating property, piercing resistance and the like, and is suitably used as a packaging material for a battery, a cooling member for a battery, a heating member for a battery and the like.

In this specification and claims, the term "aluminum" is used to include aluminum and its alloys.

Since the composite material of metal and carbon has excellent thermal conductivity, it has been proposed to use it as a heat radiating component. For example, a metal-graphite composite material containing 20 to 80% by volume of scaly graphite powder and a matrix selected from the group consisting of copper, aluminum or an alloy thereof, wherein the metal-graphite composite material is easily thermally conducted. The scale-like graphite powder in which the scale-like surface normal vector is tilted by 20 ° or more with respect to the surface normal vector is 12% or less with respect to the entire scale-like graphite powder, and the slope of the scale-like plane normal vector is 10 or less. The scaly graphite powder having a temperature of ° or less is 55% or more with respect to the entire scaly graphite powder, and the metal-graphite composite material is known as a metal-graphite composite material having a relative density of 95% or more (Patent Documents). 1).

Japanese Patent No. 4441768

However, although the metal-graphite composite material is excellent in thermal conductivity, there is a problem that the insulating property, the puncture resistance, the corrosion resistance, the wear resistance and the like are not sufficient. For example, when such a composite material is used as a packaging material (exterior material) for a battery having a heat dissipation function, insulation, puncture resistance, corrosion resistance, wear resistance and the like are insufficient.

The present invention has been made in view of such a technical background, and an object of the present invention is to provide a laminated material having excellent thermal conductivity and excellent insulation, puncture resistance, corrosion resistance, wear resistance, and the like. do.

In order to achieve the above object, the present invention provides the following means.

[1] Aluminum-carbon composite layer and
A laminated material comprising: a resin film layer arranged on at least one side of the composite material layer.

[2] Aluminum-carbon composite layer and
A first resin film layer bonded to one surface of the composite material layer with an adhesive layer, and
A laminated material comprising a third resin film layer bonded to the outer surface of the first resin film layer with an adhesive layer.

[3] Aluminum-carbon composite layer and
A first resin film layer bonded to one surface of the composite material layer with an adhesive layer, and
A laminated material comprising: a second resin film layer bonded with an adhesive layer to the other surface of the composite material layer.

[4] A third resin film layer bonded to the outer surface of the first resin film layer with an adhesive layer, and a third resin film layer.
The laminated material according to item 3 above, further comprising a fourth resin film layer bonded to the outer surface of the second resin film layer with an adhesive layer.

[5] The item according to any one of the preceding items 1 to 4, wherein each of the resin film layers is composed of a laminate of a polyethylene terephthalate film and a nylon film, and the nylon film is arranged on the composite material layer side. Laminated material.

[6] The laminated material according to any one of items 1 to 5 above, wherein the adhesive layer is a urethane-based adhesive layer.

[7] Any one of the above items 1 to 6 in which the carbon material constituting the aluminum-carbon composite material layer is one or more carbon materials selected from the group consisting of graphite, graphene, carbon fibers and carbon nanotubes. The laminated material according to item 1.

[8] The laminated material according to any one of items 1 to 7 above, wherein the aluminum-carbon composite material layer has a composite structure in which carbon material particles are dispersed in an aluminum matrix.

[9] The laminated material according to any one of the preceding items 1 to 8, wherein the laminated material is used as a packaging material for a battery, a cooling member for a battery, or a heating member for a battery.

In the invention of [1], since the aluminum-carbon composite material layer is provided, it has high thermal conductivity, and since the resin film layer is arranged on at least one side of the composite material layer, it has insulation and puncture resistance. It is excellent in property, corrosion resistance, abrasion resistance, scratch resistance, water resistance, chemical resistance, dust generation prevention property, and can impart sufficient bending strength and spring elasticity.

In the invention of [2], since the aluminum-carbon composite material layer is provided, the composite material layer has high thermal conductivity, and the first resin film layer is laminated on one surface of the composite material layer. It is excellent in insulation, puncture resistance, corrosion resistance, abrasion resistance, scratch resistance, water resistance, chemical resistance, dust generation prevention on the side, and can also impart sufficient bending strength and spring elasticity. Further, since the third resin film layer is further laminated on the outer surface of the first resin film layer, the insulating property, puncture resistance, corrosion resistance, wear resistance, scratch resistance, water resistance, and water resistance on the laminated surface side are further laminated. The chemical properties and dust generation prevention properties can be further improved.

In the invention of [3], since the aluminum-carbon composite material layer is provided, it has high thermal conductivity, and the first resin film layer is on one surface of the composite material layer and the second resin film layer is on the other surface. Is excellent in insulation, puncture resistance, corrosion resistance, abrasion resistance, scratch resistance, water resistance, chemical resistance, dust generation prevention, sufficient bending strength and spring elasticity on both sides of the laminated material. Can also be granted.

In the invention of [4], the third resin film layer is further laminated on the outer surface of the first resin film layer, and the fourth resin film layer is further laminated on the outer surface of the second resin film layer. Insulation resistance, puncture resistance, corrosion resistance, abrasion resistance, scratch resistance, water resistance, chemical resistance and dust generation prevention resistance can be further improved on both sides.

In the invention of [5], since the nylon film is provided, the puncture resistance can be further improved, and since the polyethylene terephthalate film is combined with the nylon film, the insulation, the puncture resistance, the corrosion resistance, and the corrosion resistance can be further improved. It is also excellent in abrasion resistance, scratch resistance, water resistance, chemical resistance and dust generation prevention property, and can secure sufficient bending strength and spring elasticity.

In the invention of [6], since the adhesive layer is formed of a urethane-based adhesive, sufficient adhesive strength can be ensured regardless of the resin type of the resin film layer.

In the invention of [7], one or more carbon materials selected from the group consisting of graphite, graphene, carbon fibers and carbon nanotubes are used as the carbon material, so that the thermal conductivity is further improved. be able to. For example, the cooling performance can be further enhanced when used as a cooling member, and the heating performance can be further enhanced when used as a heating member.

In the invention of [8], since the aluminum-carbon composite material layer has a composite structure in which carbon particles are dispersed in the aluminum matrix, the thermal conductivity can be further improved.

In the invention of [9], for example, when used as a battery cooling member or a battery heating member of an assembled battery, the temperature difference between the batteries can be reduced and the performance of the battery can be improved.

It is sectional drawing which shows 1st Embodiment of the laminated material which concerns on this invention. It is sectional drawing which shows the 2nd Embodiment of the laminated material which concerns on this invention. It is sectional drawing which shows the 3rd Embodiment of the laminated material which concerns on this invention. It is sectional drawing which shows the 4th Embodiment of the laminated material which concerns on this invention.

The laminated material according to the present invention includes an aluminum-carbon composite material layer and a resin film layer laminated on at least one side of the composite material layer.

The first embodiment of the laminated material which concerns on this invention is shown in FIG. The laminated material 1 includes an aluminum-carbon composite material layer 2 and a first resin film layer 11 bonded to one surface of the composite material layer 2 with a first adhesive layer 21.

Since the laminated material 1 of FIG. 1 includes the aluminum-carbon composite material layer 2, it has high thermal conductivity, and the resin film layer 11 is laminated on one side of the composite material layer 2, so that the laminated surface is formed. On the side, it is excellent in insulation, puncture resistance, corrosion resistance, abrasion resistance, scratch resistance, water resistance, chemical resistance, dust generation prevention, and can also impart sufficient bending strength and spring elasticity.

In addition, in the structure of the laminated material 1 of FIG. 1, the structure in which the adhesive layer is further laminated on the outermost surface (upper surface) side of the resin film layer 11 and / or the outer surface of the aluminum-carbon composite material layer 2 ( A configuration in which an adhesive layer is laminated on the outermost surface on the lower surface) side may be adopted.

A second embodiment of the laminated material according to the present invention is shown in FIG. The laminated material 1 includes an aluminum-carbon composite material layer 2, a first resin film layer 11 bonded to one surface of the composite material layer 2 with a first adhesive layer 21, and the first resin film layer 11. A third resin film layer 13 bonded with a third adhesive layer 23 is provided on the outer surface (the surface opposite to the surface on the composite material layer 2 side).

Since the laminated material 1 in FIG. 2 includes the aluminum-carbon composite material layer 2, it has high thermal conductivity, and the resin film layer 11 is laminated on one side of the composite material layer, so that the laminated surface side side. It is excellent in insulation, puncture resistance, corrosion resistance, abrasion resistance, scratch resistance, water resistance, chemical resistance, dust generation prevention, and can also impart sufficient bending strength and spring elasticity. Further, since the third resin film layer 13 is further laminated on the outer surface of the first resin film layer 11, the insulating property, the puncture resistance, the corrosion resistance, the wear resistance, the scratch resistance, and the water resistance on the laminated surface side are further laminated. , Chemical resistance and dust generation prevention can be further improved. As the first resin film layer 11 and the third resin film layer 13, the same kind of resin film may be used, or different kinds of resin films may be used, but different kinds of resin films may be used. , Puncture resistance and wear resistance can be further improved, which is preferable. As the combination of the different kinds of resin films, for example, a combination of a polyethylene terephthalate film and a nylon film can be exemplified (see Examples 3 and 4 described later).

In the configuration of the laminated material 1 of FIG. 2, the adhesive layer is further laminated on the outermost surface (upper surface) side of the third resin film layer 13 and / or the aluminum-carbon composite material layer 2. A configuration in which an adhesive layer is laminated on the outermost surface on the outer surface (lower surface) side may be adopted.

The laminated material 1 of the first embodiment (FIG. 1) and the second embodiment (FIG. 2) described above has a configuration in which a resin film layer is laminated on one side of an aluminum-carbon composite material layer 2, for example, for a battery. It can be suitably used as a packaging material or the like. When the laminated material 1 is used as a packaging material for a battery, the heat generated by the battery can be efficiently dissipated to the outside because the laminated material 1 has high thermal conductivity (the packaging material for a battery also functions as a heat dissipation member). do).

Next, a third embodiment of the laminated material according to the present invention is shown in FIG. The laminated material 1 includes an aluminum-carbon composite material layer 2, a first resin film layer 11 bonded to one surface of the composite material layer 2 with a first adhesive layer 21, and the other of the composite material layer 2. A second resin film layer 12 bonded with a second adhesive layer 22 is provided on the surface of the surface.

Since the laminated material 1 of FIG. 3 is provided with the aluminum-carbon composite material layer 2, it has high thermal conductivity, and the first resin film layer 11 is on one surface of the composite material layer 2 and the other surface is on the other surface. Since the two resin film layers 12 are laminated, both sides of the laminated material 1 are excellent in insulation, puncture resistance, corrosion resistance, abrasion resistance, scratch resistance, water resistance, chemical resistance, and dust generation prevention, and are sufficient. Flexible bending strength and spring elasticity can also be imparted. As the first resin film layer 11 and the second resin film layer 12, the same kind of resin film may be used, or different kinds of resin films may be used.

In addition, in the structure of the laminated material 1 of FIG. 3, the structure in which the adhesive layer is further laminated on the outermost surface on the outer surface (upper surface) side of the first resin film layer 11 and / or the outer surface of the second resin film layer 12. A configuration in which an adhesive layer is laminated on the outermost surface on the (lower surface) side may be adopted.

A fourth embodiment of the laminated material according to the present invention is shown in FIG. The laminated material 1 has a structure in which the following layers are further laminated on both sides of the laminated material of FIG. That is, the third resin film layer 13 is adhered to the outer surface of the first resin film layer 11 in the laminated material of FIG. 3 (the surface opposite to the surface on the composite material layer 2 side) by the third adhesive layer 23. At the same time, the fourth resin film layer 14 is adhered to the outer surface of the second resin film layer 12 (the surface opposite to the surface on the composite material layer 2 side) with the fourth adhesive layer 24.

In the laminated material 1 of FIG. 4, after enjoying the above-mentioned effects of the laminated material of FIG. 3, the following effects can be further obtained. That is, since the third resin film layer 13 is further laminated on the outer surface of the first resin film layer 11 and the fourth resin film layer 14 is further laminated on the outer surface of the second resin film layer 12, the laminated material 1 is further laminated. Insulation resistance, puncture resistance, corrosion resistance, wear resistance, scratch resistance, water resistance, chemical resistance and dust generation prevention resistance can be further improved on both sides. As the first resin film layer 11 and the third resin film layer 13, the same kind of resin film may be used, or different kinds of resin films may be used, but different kinds of resin films may be used. , Puncture resistance and wear resistance can be further improved, which is preferable. As the combination of the different kinds of resin films, for example, a combination of a polyethylene terephthalate film and a nylon film can be exemplified (see Examples 7 and 8 described later). Similarly, as the second resin film layer 12 and the fourth resin film layer 14, the same type of resin film may be used, or different types of resin films may be used, but different types of resin films may be used. It is preferable to do so because the puncture resistance and the wear resistance can be further improved. As the combination of the different kinds of resin films, for example, a combination of a polyethylene terephthalate film and a nylon film can be exemplified (see Examples 7 and 8 described later).

In addition, in the structure of the laminated material 1 of FIG. 4, the structure in which the adhesive layer is further laminated on the outermost surface on the outer surface (upper surface) side of the third resin film layer 13 and / or the outer surface of the fourth resin film layer 14. A configuration in which an adhesive layer is laminated on the outermost surface on the (lower surface) side may be adopted.

The laminated material 1 of the third embodiment (FIG. 3) and the fourth embodiment (FIG. 4) described above has a configuration in which a resin film layer is laminated on both side surfaces of the aluminum-carbon composite material layer 2, for example, for a battery. It can be suitably used as a cooling member or a heating member for a battery. For example, when the laminated material 1 is used as a cooling member for a battery, the laminated material 1 has high thermal conductivity, so that it exhibits a sufficient cooling function for the battery. For example, the laminated material 1 is used by sandwiching it between battery cells.

In the present invention, the aluminum-carbon composite material layer 2 preferably has a composite structure in which carbon particles are dispersed in an aluminum matrix, and in this case, thermal conductivity can be further improved. The thickness of the aluminum-carbon composite material layer is preferably in the range of 0.05 mm to 10 mm, and particularly preferably in the range of 0.1 mm to 1 mm.

Examples of the carbon material constituting the composite material layer 2 include graphite, graphene, carbon fibers, carbon nanotubes and the like. Above all, as the carbon material constituting the composite material layer 2, it is preferable to use one or more carbon materials selected from the group consisting of graphite, graphene, carbon fibers and carbon nanotubes.

The graphite is not particularly limited, but for example, natural graphite powder (for example, scaly graphite powder), artificial graphite powder, pyrolyzed graphite powder and the like are used. Of these, scaly graphite powder is preferable because it has high crystals. Further, as the graphite, those having a large particle size and aspect ratio are preferable, and it is particularly preferable to use graphite having a particle size of 300 μm or more and an aspect ratio of 30 or more. The carbon fiber (carbon fiber) is not particularly limited, and examples thereof include pitch-based carbon fiber, PAN-based carbon fiber, and gas phase growth carbon fiber (VFCG). The carbon nanotubes are not particularly limited, and examples thereof include single-walled carbon nanotubes and multi-walled carbon nanotubes. Among these, pitch-based carbon fibers are particularly suitable. As the graphite and the carbon fiber, a material heat-treated in an inert atmosphere at 2000 ° C to 3000 ° C can also be used.

The aluminum-carbon composite layer 2 can be manufactured, for example, as follows.
1) The process of dissolving the resin in a solvent to prepare a resin liquid and mixing the carbon powder and the resin liquid to prepare a paint.
2) The process of applying the above paint on aluminum foil,
3) After the above coating, the process of drying the solvent to produce carbon coated foil and
4) The process of cutting and laminating the carbon-coated foil to prepare a laminated body,
5) It can be manufactured by a manufacturing method including a step of removing the resin by heating the laminate and joining the aluminum foils to each other. This manufacturing method is merely an example thereof, and the aluminum-carbon composite layer 2 in the present invention is not particularly limited to that obtained by the above-exemplified manufacturing method.

In the present invention, the first resin film layer 11, the second resin film layer 12, the third resin film layer 13 and the fourth resin film layer 14 are not particularly limited, but for example, polyethylene terephthalate (PET). ) Film, nylon film (preferably biaxially stretched nylon film), polystyrene (PS) film, polyethylene (PE) film, polypropylene (PP) film, polyethylene naphthalate (PEN) film, polyimide (PI) film, polycarbonate ( PC) film, acrylic resin film, epoxy resin film and the like can be mentioned. Above all, it is preferable to use a laminate of polyethylene terephthalate film / biaxially stretched nylon film.

The thicknesses of the first resin film layer 11, the second resin film layer 12, the third resin film layer 13, and the fourth resin film layer 14 are all preferably set in the range of 5 μm to 200 μm. 10 μm to 50 μm is particularly preferable.

The adhesive forming the first adhesive layer 21, the second adhesive layer 22, the third adhesive layer 23, and the fourth adhesive layer 24 is not particularly limited, but is not particularly limited, and is, for example, a urethane-based resin. , Olefin resin, ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid ester copolymer, ethylene-methacrylate copolymer and the like, and CPP (casting polypropylene) may be used. Above all, it is preferable to use a urethane resin, and in this case, high adhesive strength can be ensured.

The laminating method for laminating using the above adhesive is not particularly limited in the case of a wet type, but for example, dip coating, spin coating, gravure printing, die coater, knife coater, and three pieces. Examples thereof include coating methods such as roll (offset type), slit coater, roll coater (two rolls), spray coat, curtain coat, reverse roll coater, and comma coater (comma coater). The dry type is not particularly limited, and examples thereof include a dry laminating method, a heat laminating method, and a hot pressing method.

Next, specific examples of the present invention will be described, but the present invention is not particularly limited to those of these examples.

<Comparative Example 1>
A paint obtained by mixing a scaly graphite powder having an average particle size of 300 μm and an aspect ratio of 30 and a resin liquid is applied to the surface of an aluminum foil (A1100 material) having a thickness of 20 μm, and then the solvent is dried. A graphite-coated foil was prepared, and the graphite-coated foil was cut and laminated to obtain a laminate. Next, the resin was removed by heating the laminate in vacuum at 600 ° C., and the aluminum foils were joined to each other to obtain an aluminum-carbon composite material having a thickness of 0.1 mm. The obtained aluminum-carbon composite material was graphite / aluminum material = 30 parts by volume / 70 parts by volume.

<Example 1>
An aluminum-carbon composite material (layer) 2 having the same thickness as that of Comparative Example 1 and having a thickness of 0.1 mm was prepared. Next, a urethane adhesive (main agent: polyester polyurethane resin, curing agent: aromatic isocyanate, tolylene diisocyanate, diluting solvent) was applied to one surface of the obtained aluminum-carbon composite layer 2 by a spray coating method. : Ethyl acetate) is applied, and then a 12 μm-thick polyethylene terephthalate (PET) film 11 is bonded and pressed between a pair of rolls, and then dried at 60 ° C. to be laminated and integrated. The laminated material 1 having the constitution shown in the above was obtained.

<Example 2>
A laminated material 1 having the configuration shown in FIG. 1 was obtained in the same manner as in Example 1 except that a biaxially stretched nylon film having a thickness of 15 μm was used instead of the polyethylene terephthalate (PET) film having a thickness of 12 μm.

<Example 3>
An aluminum-carbon composite material (layer) 2 having the same thickness as that of Comparative Example 1 and having a thickness of 0.1 mm was prepared. Next, the same urethane adhesive as in Example 1 was applied to one surface of the obtained aluminum-carbon composite layer 2 by a spray coating method, and then a polyethylene terephthalate (PET) film 11 having a thickness of 12 μm was applied. A pair of the polyethylene terephthalate film 11 is bonded, and the urethane-based adhesive is applied to the surface (outer surface; exposed surface) of the polyethylene terephthalate film 11, and a biaxially stretched nylon film 13 having a thickness of 15 μm is bonded to the coated surface. After sandwiching the film between the rolls, the film was dried at 60 ° C. to be laminated and integrated to obtain a laminated material 1 having the configuration shown in FIG.

<Example 4>
An aluminum-carbon composite material (layer) 2 having the same thickness as that of Comparative Example 1 and having a thickness of 0.1 mm was prepared. Next, the same urethane adhesive as in Example 1 was applied to one surface of the obtained aluminum-carbon composite layer 2 by a spray coating method, and then a biaxially stretched nylon film 11 having a thickness of 15 μm was attached. Further, the urethane-based adhesive is applied to the surface (outer surface; exposed surface) of the biaxially stretched nylon film 11, and a 12 μm-thick polyethylene terephthalate (PET) film 13 is bonded to the coated surface. After sandwiching the film between the pair of rolls, the film was dried at 60 ° C. to be laminated and integrated to obtain a laminated material 1 having the configuration shown in FIG.

<Example 5>
An aluminum-carbon composite material (layer) 2 having the same thickness as that of Comparative Example 1 and having a thickness of 0.1 mm was prepared. After applying the same urethane adhesive as in Example 1 to one surface of the aluminum-carbon composite layer 2 by the spray coating method, a polyethylene terephthalate (PET) film 11 having a thickness of 12 μm is attached and described above. A pair of polyethylene terephthalate (PET) films 12 having a thickness of 12 μm are bonded to the other surface of the aluminum-carbon composite layer 2 after applying the same urethane adhesive as in Example 1 by a spray coating method. After sandwiching the pressure between the rolls, the film was dried at 60 ° C. to be laminated and integrated to obtain a laminated material 1 having the configuration shown in FIG.

<Example 6>
Laminating with the configuration shown in FIG. 3 in the same manner as in Example 5, except that the biaxially stretched nylon films 11 and 12 having a thickness of 15 μm were used instead of the polyethylene terephthalate (PET) films 11 and 12 having a thickness of 12 μm. Material 1 was obtained.

<Example 7>
An aluminum-carbon composite material (layer) 2 having the same thickness as that of Comparative Example 1 and having a thickness of 0.1 mm was prepared. Next, the same urethane adhesive as in Example 1 was applied to one surface of the obtained aluminum-carbon composite material layer 2 by a spray coating method, and then a 12 μm-thick polyethylene terephthalate (PET) film 11 was applied. After bonding, the urethane adhesive is applied to the surface (outer surface; exposed surface) of the polyethylene terephthalate film 11, and the biaxially stretched nylon film 13 having a thickness of 15 μm is bonded to the coated surface, and the aluminum- After applying the same urethane adhesive as in Example 1 to the other surface of the carbon composite material layer 2 by the spray coating method, a 12 μm-thick polyethylene terephthalate (PET) film 12 is bonded, and further, the polyethylene terephthalate film is attached. The urethane-based adhesive is applied to the surface (outer surface; exposed surface) of the twelve, and a biaxially stretched nylon film 14 having a thickness of 15 μm is bonded to the coated surface, and the film is sandwiched between a pair of rolls. The laminated material 1 having the structure shown in FIG. 4 was obtained by laminating and integrating by drying at 60 ° C.

<Example 8>
An aluminum-carbon composite material (layer) 2 having the same thickness as that of Comparative Example 1 and having a thickness of 0.1 mm was prepared. Next, the same urethane adhesive as in Example 1 was applied to one surface of the obtained aluminum-carbon composite material layer 2 by a spray coating method, and then a biaxially stretched nylon film 11 having a thickness of 15 μm was attached. Further, the urethane-based adhesive is applied to the surface (outer surface; exposed surface) of the biaxially stretched nylon film 11, and the polyethylene terephthalate (PET) film 13 having a thickness of 12 μm is attached to the coated surface, and the above is described. The same urethane adhesive as in Example 1 was applied to the other surface of the aluminum-carbon composite material layer 2 by the spray coating method, and then a biaxially stretched nylon film 12 having a thickness of 15 μm was bonded to the biaxially stretched nylon film 12. The urethane-based adhesive is applied to the surface (outer surface; exposed surface) of the stretched nylon film 12, and a 12 μm-thick polyethylene terephthalate (PET) film 14 is bonded to the coated surface and sandwiched between a pair of rolls. After the pressure was applied, the film was dried at 60 ° C. to be laminated and integrated to obtain a laminated material 1 having the configuration shown in FIG.

The performance of each laminated material obtained as described above was evaluated based on the following evaluation method. The results are shown in Table 1.

<Thermal conductivity evaluation method>
The thermal diffusivity in the horizontal direction (direction perpendicular to the thickness direction) of the composite material is measured by the laser flash method, and the thermal diffusivity is multiplied by the density and specific heat of the composite material to obtain the thermal conductivity (W / m).・ K) was calculated.

<Puncture resistance evaluation method>
The piercing strength of each laminated material was evaluated in accordance with JIS Z1707-1997 (general rule for plastic films for food packaging). The maximum stress until the needle penetrated the laminated material was measured and evaluated based on the following criteria.
(criterion)
“⊚”… The maximum stress is 60 N or more “◯”… The maximum stress is 30 N or more and less than 60 N “×”… The maximum stress is less than 30 N.

<Abrasion resistance evaluation method>
According to JIS P8136-1994, a wear resistance test was performed on each laminated material under the condition of 30 strokes, and the presence or absence of scratches on the laminated material was visually inspected and evaluated based on the following criteria. For the laminated material having the structure shown in FIGS. 1 and 2, the wear resistance test was performed on the outermost surface on the side where the resin film layer is laminated, and for the laminated material having the structure shown in FIGS. 3 and 4. The above wear resistance test was performed on the outermost surfaces on both sides.
(criterion)
"◎" ... No scratches were found on the outermost resin film layer of the laminated material "○" ... A small number of slight scratches were found on the outermost resin film layer of the laminated material "×" ... Of the laminated material Many remarkable scratches were observed on the outermost resin film layer.

As is clear from Table 1, the laminated materials of Examples 1 to 8 according to the present invention were excellent in thermal conductivity, as well as in puncture resistance and wear resistance. On the other hand, the laminated material of Comparative Example 1 deviating from the specified range of the present invention was inferior in puncture resistance and insufficient wear resistance.

The laminated material according to the present invention is suitably used as a packaging material for a battery, a cooling member for a battery, or a heating member for a battery, but is not particularly limited to such an application.

1 ... Laminated material 2 ... Aluminum-carbon composite material layer 11 ... First resin film layer 12 ... Second resin film layer 13 ... Third resin film layer 14 ... Fourth resin film layer 21 ... First adhesive layer 22 ... First 2 Adhesive layer 23 ... Third adhesive layer 24 ... Fourth adhesive layer

Claims (8)

An aluminum-carbon composite layer having a composite structure in which carbon material particles are dispersed in an aluminum matrix ,
A laminated material comprising: a resin film layer arranged on at least one side of the composite material layer. An aluminum-carbon composite layer having a composite structure in which carbon material particles are dispersed in an aluminum matrix ,
A first resin film layer bonded to one surface of the composite material layer with an adhesive layer, and
A laminated material comprising a third resin film layer bonded to the outer surface of the first resin film layer with an adhesive layer. An aluminum-carbon composite layer having a composite structure in which carbon material particles are dispersed in an aluminum matrix ,
A first resin film layer bonded to one surface of the composite material layer with an adhesive layer, and
A laminated material comprising: a second resin film layer bonded with an adhesive layer to the other surface of the composite material layer. A third resin film layer bonded to the outer surface of the first resin film layer with an adhesive layer,
The laminated material according to claim 3, further comprising a fourth resin film layer bonded to the outer surface of the second resin film layer with an adhesive layer. The laminated material according to any one of claims 2 to 4 , wherein the adhesive layer is a urethane-based adhesive layer. The laminate according to any one of claims 1 to 5 , wherein each of the resin film layers is composed of a laminate of a polyethylene terephthalate film and a nylon film, and the nylon film is arranged on the composite material layer side. .. One of claims 1 to 6, wherein the carbon material constituting the aluminum-carbon composite material layer is one or more carbon materials selected from the group consisting of graphite, graphene, carbon fibers and carbon nanotubes. The laminated material described in. The laminated material according to any one of claims 1 to 7 , wherein the laminated material is used as a packaging material for a battery, a cooling member for a battery, or a heating member for a battery.

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