JP4193399B2 - Interior materials for vehicles - Google Patents

Description

【０１０６】
【表２】

【０１０７】
【表３】

【０１０８】
上記実施例から示されるように、本発明の車両用内装材は優れた放熱性能を有するため、過酷な条件下における車室内温度の改善が図れる。
【図面の簡単な説明】
【図１】 本発明に係る車両用内装材の一実施形態の断面模式図である。
【図２】 本発明に係る車両用内装材がドアに適用された実施形態を示す模式図である。
【図３】 本発明に係る車両用内装材の他の実施形態の断面模式図である。
【図４】 従来の車両用内装材を示す断面模式図である。
【符号の説明】
１、１０１ 内装トリム材
３ 水蒸気吸脱着性冷熱蓄熱材
５ 空隙
７ ドア外板パネル
９ 高熱伝導性層[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle interior material and a vehicle interior component using the same, and more particularly, a vehicle capable of reducing an increase in vehicle interior temperature without using a large amount of power even under a severe environment such as a summer hot weather. The present invention relates to a vehicle interior material and a vehicle interior component using the same.
[0002]
[Prior art]
The interior air of the car parked under the sun, trim parts, and the surface of interior parts such as seats become extremely hot, causing hot discomfort during boarding. FIG. 4 shows the configuration of a conventional interior trim material. However, since the conventional interior trim material 101 does not have any cooling mechanism, the temperature of the interior trim material 101 and the interior air of the vehicle interior is outside air if the vehicle is left unattended. In principle, it does not drop below the temperature. Even if the vehicle body has a heat-shielding and light-shielding structure that prevents heat from the sun from entering the passenger compartment, the air in the passenger compartment, the surface of the trim, the surface of the interior parts, etc. will be at a high temperature exceeding 40 ° C if the vehicle is parked in summer. Can be. When riding a vehicle in such a state, a great deal of heat discomfort must be felt.
[0003]
There are ways to reduce the temperature inside the vehicle by getting the air conditioner to run continuously under hot weather, or by operating the air conditioner with a heavy load just before boarding, but the load on the battery or the maximum driving load of the air conditioner can be reduced. There is a problem that it becomes larger and energy loss increases, which is unrealistic.
[0004]
As a method of cooling the passenger compartment environment without using a large amount of power, there is also a method of ventilating a parked passenger compartment using a small blower using a solar cell as a power source. However, in this ventilation method, it is impossible in principle to lower the vehicle interior temperature below the outside air temperature. Moreover, in order to ventilate the entire interior space of the vehicle body having a certain size, a power system for moving the blower becomes large.
[0005]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION In view of the problems of the prior art, an object of the present invention is to provide an interior material for a vehicle that can improve a vehicle cabin environment without requiring a large amount of power even under a severe environment such as under hot summer weather. . Another object of the present invention is to provide a vehicle component using the vehicle interior material.
[0006]
[Means for Solving the Problems]
The above problem is to have a water vapor absorption / desorption cold storage material. The water vapor adsorbing / desorbing cold heat storage material includes high thermal conductive fibers having a hair mixing ratio of 5 to 75% by mass. It is solved by the vehicle interior material. In addition, the above-mentioned problem is that a high temperature conductive layer made of resin is provided between the interior trim material and the water vapor adsorption / desorption cold heat storage material. It is also solved by a vehicle interior material characterized by being laminated. The vehicle interior material of the present invention includes a water vapor adsorbing and desorbing heat storage material that cools cold air by adsorbing and dissipating water vapor in the outside air at night, and desorbs and absorbs heat during the day. Due to the action of the water vapor storage and desorption heat storage material, it is possible to suppress the temperature of the air inside the vehicle under the sun and the temperature rise of the interior trim and the surface of the interior parts without using a large amount of power. That is, the vehicle interior material according to the present invention can improve the vehicle cabin environment under a harsh environment such as under hot summer weather.
[0007]
【The invention's effect】
According to this invention comprised as mentioned above, there exist the following effects for every claim.
[0008]
The invention described in claim 1 has a water vapor adsorption / desorption cold heat storage material. The water vapor adsorbing / desorbing cold heat storage material includes high thermal conductive fibers having a hair mixing ratio of 5 to 75% by mass. It is a vehicle interior material. The water vapor absorbing / desorbing cold heat storage material cools cold air by adsorbing and dissipating water vapor in the outside air at night, and desorbs heat by desorbing water vapor in the daytime. Due to the action of the water vapor adsorbing and desorbing heat storage material, it is possible to suppress the temperature of the air inside the vehicle under the sun and the temperature rise of the interior trim and the surface of the interior parts without using a large amount of power. Furthermore, if the water vapor adsorption / desorption cold heat storage material contains high thermal conductivity fibers, the heat transfer resistance from the interior trim material to the water vapor adsorption / desorption cold heat storage material is reduced, and the latent heat of vaporization is vapor with high heat conductivity. It is taken away from the interior trim material via the adsorption / desorption cold storage material. By promoting this mechanism, the interior trim material can be efficiently cooled. In other words, the interior material for a vehicle of the present invention can greatly improve the in-vehicle environment when parking under hot weather.
[0009]
The invention according to claim 2 is the vehicle interior material in which the water vapor adsorption / desorption cold heat storage material is disposed on the vehicle body exterior side of the interior trim material. In this way, when the water vapor adsorption / desorption cold heat storage material is arranged on the exterior side of the interior trim material, cooling of the interior trim material by the water vapor adsorption / desorption cold heat storage material is effective and corresponds to the inner surface of the vehicle body. Therefore, there is no worry of losing aesthetics.
[0010]
The invention described in claim 3 is a vehicle interior material including, as a water vapor adsorbing and desorbing cold heat storage material, a fiber coated with sodium polyacrylate, zeolite, silica gel or activated carbon on the surface, or sodium polyacrylate fiber. When these materials are used as the water vapor adsorption / desorption cold heat storage material, the cooling effect of the interior trim material by the water vapor adsorption / desorption cold heat storage material is increased.
[0012]
Claim 4 The invention described in (1) is selected from the group consisting of carbon fibers, copper fibers, aluminum fibers, polymer fibers containing carbon black or carbon fibers, and resin fibers coated with copper or aluminum as the high thermal conductive fibers. It is a vehicle interior material using one or more kinds. By using these materials as highly heat conductive fibers, the cooling effect of the interior trim material by the water vapor adsorbing and desorbing cold heat storage material can be effectively enhanced.
[0013]
Claim 5 The invention described in 1 is an interior material for a vehicle in which the water vapor adsorption / desorption cold heat storage material is a nonwoven fabric and / or a raised fiber structure. If the water vapor adsorption / desorption cold storage material is a non-woven fabric or a raised fiber structure, the physical contact area between air and the vapor adsorption / desorption cold storage material in the gap between the interior trim material and the door skin panel Increase. For this reason, the water vapor adsorption / desorption performance of the water vapor adsorption / desorption cold heat storage material is improved, and the interior trim material can be efficiently cooled.
[0014]
Claim 6 The invention described in A steam bulb removable heat storage material on the exterior side of the interior trim material, With interior trim material Above A vehicular interior material in which a high thermal conductivity layer made of a resin is further laminated between a water vapor adsorption / desorption cold storage material. In this way, when the high thermal conductivity layer is interposed between the interior trim material and the water vapor adsorption / desorption cold heat storage material, heat conduction between the interior trim material and the water vapor adsorption / desorption cold heat storage material is promoted, The trim material is efficiently cooled.
[0015]
Claim 7 The invention described in 1 is a vehicle interior material in which the content of the high thermal conductivity filler in the high thermal conductivity layer is 10 to 50% by mass with respect to the mass of the entire high thermal conductivity layer. When the high thermal conductive filler is contained in this range, the cooling effect by the water vapor adsorption / desorption cold heat storage material is large.
[0016]
Claim 8 The invention described in 1 is a vehicle interior material in which the high thermal conductive filler is at least one of carbon black and carbon fiber. These materials effectively act to increase the thermal conductivity of the high thermal conductivity layer, and can increase the cooling action by the water vapor adsorption / desorption cold heat storage material.
[0017]
Claim 9 The invention described in 1 is a vehicle interior material in which the resin forming the high thermal conductivity layer is at least one selected from the group consisting of acrylic resin, urethane resin, polypropylene resin and polyester resin. These resins are excellent as moldability and are generally suitable as resins for high thermal conductivity layers because of their generally low cost.
[0018]
Claim 1 0 The invention described in 1 is a vehicle interior component using the vehicle interior material described above. The vehicle interior part provided with the vehicle interior material of the present invention has an excellent cooling effect by a mechanism similar to that of the vehicle interior material for improving the vehicle interior environment.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
The first invention of this application has a water vapor adsorption / desorption cold heat storage material. The water vapor adsorbing / desorbing cold heat storage material includes high thermal conductive fibers having a hair mixing ratio of 5 to 75% by mass. It is a vehicle interior material. In the present invention, the “water vapor adsorption / desorption cold storage material” refers to a material that exhibits heat generation due to adsorption of water vapor and heat absorption due to desorption of water vapor in accordance with the humidity of the surrounding air.
[0020]
First, the effect of the vehicle interior material having the water vapor adsorption / desorption cold heat storage material will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic sectional view of a vehicle interior material according to the present invention, and FIG. 2 is a schematic diagram showing an embodiment in which the vehicle interior material according to the present invention is applied to a door. In FIG. 1, 1 is an interior trim material, and 3 is a water vapor adsorption / desorption cold heat storage material. In FIG. 2, 7 is a door skin panel. In the following description, an embodiment in which a vehicle interior material is mainly applied to a door will be described. However, this is merely for convenience of explanation, and the vehicle interior material of the present invention is intended to be limited to a door. Not what you want. For example, it can be applied to a front fender, a rear fender, a headlining, a pillar, an instrument panel, a dash panel, a floor panel, a partition wall part of a trunk room, a rear parcel, and the like.
[0021]
The humidity of outside air during summer nights is generally higher than in the daytime, and the relative humidity of the outside air flowing into the door gap 5 between the vehicle interior material and the door skin panel 7 is high in hot and humid areas such as Japan. It will also exceed 80% RH. At night, the water vapor adsorption / desorption cold heat storage material 3 provided on the exterior side of the vehicle interior trim material 1 stores cold air by adsorbing water vapor from this high humidity air. On the other hand, the humidity of the outside air during the daytime is lower than that at night, and the relative humidity of the outside air flowing into the air gap 5 inside the door skin panel 7 is usually reduced to about 50-60% RH in Japan. To do. Thus, when relative humidity falls, a water | moisture content evaporates from the water vapor | steam adsorption / desorption cold heat storage material 3 to external air contrary to nighttime. At this time, since the latent heat of vaporization is removed, the interior trim material 1 can be cooled. Of course, when water vapor is adsorbed at night, heat is generated from the water vapor adsorption / desorption cold heat storage material 3, but the deterioration of the vehicle interior environment due to the sun during the daytime cannot occur. It can be said that the vehicle interior environment can be improved by the cooling action of the vehicle interior material.
[0022]
In order to produce the above-described cooling action on the water vapor adsorption / desorption cold heat storage material 3, the outside air needs to be brought into contact with the water vapor adsorption / desorption cold heat storage material 3. It is necessary to provide a gap 5 to be introduced. When a vehicle interior material is applied to the door, a gap 5 that normally occurs between the interior trim material 1 and the door skin panel 7 may be used. Various methods can be used to allow outside air to flow into the door internal space 5 between the vehicle interior material and the door skin panel 7, and there is no particular limitation. For example, the vehicle body structure may be designed such that the outside air naturally flows into the door gap 5 to generate ventilation. You may employ | adopt the system which accelerates | stimulates circulation of external air with the small air blower driven with slight power, such as a small solar cell. A method of circulating the outside air in the gap 5 between the interior trim material 1 and the door skin panel 7 may be adopted by utilizing the difference in air density due to the adsorption and desorption of water vapor by the water vapor adsorption / desorption cold heat storage material 3. . These may be combined.
[0023]
In the present application, the interior trim material 1 constituting the vehicle interior material means a material constituting the door trim, and in order to obtain a large improvement effect of the vehicle interior environment by the water vapor adsorbing and desorbing cold heat storage material 3, the interior trim material 1 is the interior material only. The trim material 1 may be configured. However, it is not limited to such embodiment, You may use the interior trim material 1 which added various components, such as a pad, a skin, an ornament, an armrest, a carpet, and a molding. The material of these components is not particularly limited. For example, it is formed using polypropylene as a base material. For the purpose of improving thermal conductivity, a filler such as carbon fiber may be contained. In this case, the content of the filler is generally about 10 to 50% by mass with respect to the mass of the entire interior trim material. Although the thickness of the interior trim material is not particularly limited, the thickness of the core material is generally 1 to 3 mm.
[0024]
The water vapor adsorbing / desorbing cold heat storage material 3 is not particularly limited in its constituent material and shape as long as it has an effect of generating heat due to the adsorption action of water vapor and heat absorption due to the desorption of water vapor depending on the humidity of the surrounding air. .
[0025]
What is necessary is just to adjust the shape of the water vapor | steam adsorption / desorption cold storage material 3 according to the shape of the interior trim material 1, the shape of the door outer plate panel 7, or the like. It is preferable that the water vapor adsorption / desorption cold heat storage material 3 is disposed outside the vehicle body of the interior trim material 1. Thus, when arrange | positioning on the vehicle body exterior side, cooling of the interior trim material 1 by the water vapor | steam adsorption / desorption cold-heat storage material 3 is effective, and since it corresponds to the inner surface of a vehicle body, there is no fear of impairing aesthetics. More preferably, as shown in FIG. 1, the interior trim material 1 and the water vapor adsorption / desorption cold heat storage material 3 are laminated. By directly or indirectly integrating the interior trim material 1 and the water vapor adsorption / desorption cold heat storage material 3, more heat can be absorbed from the interior trim material 1, and the water vapor adsorption / desorption cold heat storage material can be absorbed. The interior trim material 1 is efficiently cooled by 3. The water vapor adsorption / desorption cold heat storage material 3 may be laminated in a range corresponding to a part of the interior trim material 1. That is, in the case of the installation space, when the heat absorption / desorption cold / heat storage material 3 cannot be installed on the entire exterior surface of the interior trim material 1, it is laminated on a part of the exterior surface of the interior trim material 1. May be. Even when a sufficient effect can be obtained by laminating a part thereof, it is sufficient that the interior trim material 1 is also laminated on a part of the surface of the interior trim material 1 on the vehicle body outside side. The thickness of the water vapor adsorbing / desorbing cold heat storage material 3 is usually set to a thickness of about 1 to 10 mm in order to fully express the effect of the water vapor adsorbing / desorbing cold heat storage material 3.
[0026]
The constituent material of the water vapor adsorption / desorption cold heat storage material 3 is not particularly limited as long as it does not impede the water vapor adsorption / desorption property. Examples of the configuration of the water vapor adsorption / desorption cold heat storage material 3 include (1) a fiber structure using fibers having water vapor adsorption / desorption properties, and (2) a resin thin film made of a water vapor adsorption / desorption compound. Can be mentioned. Moreover, in the case of (1), the form using the fiber ((1) -1) containing the water vapor adsorbing / desorbing agent or the fiber ((1) -2) obtained by fiberizing the water vapor adsorbing / desorbing agent can be mentioned. Each of these will be described below. In addition, in this application, the fiber which has water vapor adsorption / desorption property is called water vapor adsorption / desorption property fiber.
[0027]
Examples of the base fiber used in the fiber ({circle around (1)}-1) containing the water vapor adsorption / desorption agent include polypropylene, polyester, polyacrylonitrile, polyamide and the like. However, it is not limited to these. The thickness of the fiber is usually about 5 to 300 μm. By containing a water vapor adsorbing and desorbing agent in these base fibers, water vapor adsorbing and desorbing fibers having water vapor adsorbing and desorbing performance can be obtained. The water vapor adsorption / desorption agent can be contained by coating the surface of the base fiber with the water vapor adsorption / desorption agent. The coating method is not particularly limited, and a conventional technique may be used. The content of the water vapor adsorbing and desorbing agent is preferably 10 to 60% by mass with respect to the total amount of the base fiber and the water vapor adsorbing and desorbing agent. Examples of the water vapor adsorbing and desorbing agent contained in the base fiber include a polymer adsorbent, zeolite, silica gel, activated carbon and the like. These materials exhibit an excellent water vapor adsorption / desorption amount and water vapor adsorption / desorption rate within a range in which the temperature and humidity of the outside air change. The polymer adsorbent refers to a polymer compound having water vapor adsorption / desorption performance, and examples thereof include sodium polyacrylate, sodium allonate, polyvinyl alcohol, and polyethylene glycol.
[0028]
What is necessary is just to select what has a suitable physical property according to the environment (temperature, humidity, etc.) to which interior material for vehicles is applied from the above-mentioned material as the water vapor adsorbing / desorbing agent actually used in the present invention. The physical property control of the water vapor adsorption / desorption cold storage material is appropriately performed according to the material. For example, the water vapor adsorption / desorption property of zeolite can be adjusted by controlling the pore size distribution. The water vapor adsorption / desorption property of the polymer compound can be adjusted by controlling the composition and molecular weight distribution.
[0029]
As the fiber ({circle around (1)}-2) in which the water vapor adsorbing / desorbing agent is made into a fiber, a fiber made from a polymer adsorbent can be used. As the polymer adsorbent, various polymer compounds mentioned in the description of “fibers containing water vapor adsorption / desorption agent ((1) -1)” can be used. The thickness of the fiber is not particularly limited, but is generally about 5 to 300 μm. The fiberization can be performed using a conventionally known technique.
[0030]
When using a fiber (1) -1 containing a water vapor adsorbing / desorbing agent or a fiber (1) -2 containing a water vapor adsorbing / desorbing agent, the woven or knitted structure of the water vapor absorbing / desorbing cold heat storage material 3 is used. Is preferably a non-woven fabric. When the water vapor adsorption / desorption cold heat storage material 3 is a non-woven fabric, the physical contact area between the air and the water vapor adsorption / desorption cold heat storage material 3 in the gap 5 between the interior trim material 1 and the door outer panel 7 increases. To do. For this reason, the water vapor adsorption / desorption performance of the water vapor adsorption / desorption cold heat storage material 3 is improved, and the interior trim material 1 can be efficiently cooled.
[0031]
Moreover, it is preferable that the water vapor adsorption-desorption cold heat storage material 3 is a raised fiber structure. If the water vapor adsorption / desorption cold heat storage material 3 is a raised fiber structure, the air in the gap 5 between the interior trim material 1 and the door outer panel 7 and the water vapor adsorption / desorption cold heat storage layer 3 physically The contact area increases. For this reason, the water vapor adsorption / desorption performance of the water vapor adsorption / desorption cold heat storage material 3 is improved, and the interior trim material 1 can be efficiently cooled. In order to make the water vapor adsorption / desorption cold heat storage material 3 into a raised fiber structure, a fiber containing a water vapor adsorption / desorption agent (1) -1 or a fiber made of a water vapor adsorption / desorption agent (1) -2 ) And knitting and raising the brush. It can be said that the cooling effect of the interior trim material 1 is further enhanced when the water vapor absorption / desorption cold heat storage material 3 is a nonwoven fabric and a raised fiber structure.
[0032]
The basis weight when the water vapor adsorption / desorption cold heat storage material 3 is a fiber structure is 50 to 600 g / m. ² A degree is usually used.
[0033]
In order to enhance the effect of improving the cabin environment by the water vapor adsorption / desorption cold heat storage material 3, the water vapor adsorption / desorption cold heat storage material 3 preferably contains a high thermal conductivity fiber and is a material having high thermal conductivity. . High thermal conductivity fibers refer to fibers excellent in thermal conductivity. Specifically, it is preferable that the thermal conductivity of the fibers is 0.1 W / (m · K) or more. When the water vapor adsorption / desorption cold heat storage material 3 has high thermal conductivity, the heat transfer resistance from the interior trim material 1 to the water vapor adsorption / desorption cold heat storage material 3 is reduced, and the latent heat of vaporization has a high heat conductivity. It is taken away from the interior trim material 1 via the removable heat storage material 3. By promoting this mechanism, the interior trim material 1 can be efficiently cooled.
[0034]
In order to further extract the effect that the latent heat of evaporation is taken from the interior trim material 1 via the water vapor adsorption / desorption cold heat storage material 3 and the interior trim material 1 can be efficiently cooled, the water vapor adsorption / desorption cold heat storage material 3 is preferably 5 to 75% by mass. In addition, the hair mixing rate used here means the mass ratio of the high heat conductive fiber with respect to the total mass of the water vapor adsorption / desorption fiber and the high heat conductive fiber in the water vapor adsorption / desorption cold heat storage material 3. Even if the hair mixing ratio of the high thermal conductive fiber is less than 5% by mass, the interior trim material 1 is cooled, but if the hair mixing ratio of the high thermal conductive fiber is 5% by mass or more, the interior trim material 1 is cooled. The effect of doing becomes remarkable. However, when the hair mixing ratio of the highly heat conductive fiber exceeds 75% by mass, the ratio of the water vapor adsorbing / desorbing fibers in the water vapor adsorbing / desorbing cold heat storage material 3 is reduced, and the amount of cold heat storage is reduced. The fiber mixing ratio is preferably 75% by mass or less.
[0035]
As the high thermal conductive fiber, various fibers having excellent thermal conductivity can be used. As a material for effectively improving the cooling action of the interior trim material 1, carbon fiber, copper fiber, aluminum fiber, carbon black or carbon fiber can be used. Polymer fibers containing copper, resin fibers coated with copper or aluminum, and the like may be used by selecting one or more of these materials. When using a polymer fiber containing carbon black or carbon fiber, a heat conductive material such as carbon black or carbon fiber is kneaded into a polymer fiber made of polypropylene or the like. Note that “kneading” means a state where the fibers are mixed even inside. In order to knead the heat conductive material inside the fiber, a predetermined amount of the heat conductive material may be added to the thermoplastic resin in advance when the polymer fiber is produced. The carbon fiber is prepared to have a length suitable for kneading. Of course, carbon black and carbon fiber may be used in combination. In the case where a polymer fiber coated with copper or aluminum is used as the heat conductive material, a polymer fiber made of polypropylene or the like can be similarly used. The method of coating is not particularly limited, and a known technique may be applied.
[0036]
On the other hand, when the water vapor adsorption / desorption cold heat storage material 3 is a resin thin film (2) made of a water vapor adsorption / desorption compound, a resin thin film containing a water vapor adsorption / desorption compound such as sodium polyacrylate may be used. . The resin is preferably a foam such as a polyurethane foam. When such a foam is used as a base material, the contact area between the water vapor adsorbing / desorbing cold heat storage material 3 and the gas in the gap 5 can be increased, and the cooling effect of the interior trim material 1 is increased. If the foam has an open cell structure, the cooling effect of the interior trim material 1 is greater.
[0037]
The second invention of the present application has a water vapor bulb detachable cold heat storage material on the vehicle body exterior side of the interior trim material, and a high thermal conductivity made of resin between the interior trim material and the water vapor adsorption / desorption cold heat storage material. An interior material for a vehicle characterized in that layers are laminated. As shown in FIG. 3, the vehicle interior material of the present invention may be formed by laminating a high thermal conductivity layer 9 made of a resin between the interior trim material 1 and the water vapor adsorption / desorption cold heat storage material 3. The high thermal conductivity layer 9 means a resin-made layer having high thermal conductivity. Specifically, the thermal conductivity of the high thermal conductivity layer is preferably 0.1 W / (m · K) or more. The vehicle interior material in which the interior trim material 1, the high thermal conductivity layer 9 and the water vapor adsorption / desorption cold heat storage material 3 are stacked in this order is the heat conduction between the interior trim material 1 and the water vapor adsorption / desorption cold heat storage material 3. The interior trim material 1 can be efficiently cooled. When the high thermal conductivity layer 9 is applied to a vehicle, the water vapor adsorbing / desorbing cold heat storage material 3 may be disposed outside the vehicle body.
[0038]
The high thermal conductivity layer 9 can ensure thermal conductivity by using a resin as a base material and containing a high thermal conductivity filler inside the resin. Examples of the resin used at that time include acrylic resin, urethane resin, polypropylene resin, and polyester resin. One or more of these may be selected and used.
[0039]
The high thermal conductivity layer 9 preferably contains 10 to 50% by mass of the high thermal conductivity filler with respect to the mass of the high thermal conductivity layer 9. When the content of the high thermal conductive filler contained in the high thermal conductive layer 9 is 10% by mass or more, the effect of cooling the interior trim material 1 becomes remarkable. However, when the content of the high heat conductive filler contained in the high heat conductive layer 9 exceeds 50% by mass, the physical and thermal joining of the high heat conductive layer 9 and the water vapor adsorbing / desorbing cold heat storage material 3 is aided. There is a possibility that the ratio of the resin having the action decreases and the cooling effect of the interior trim material 1 decreases. As mentioned above, 10-50 mass% is suitable for content of a high heat conductive filler.
[0040]
The high thermal conductivity filler refers to a material that fills the high thermal conductivity layer 9 and serves to increase the thermal conductivity of the high thermal conductivity layer 9, and is preferably carbon black or carbon fiber. You may use combining these. These are effective in increasing the thermal conductivity of the high thermal conductive layer 9. The high thermal conductive filler may be preliminarily blended in the resin before molding and contained in the high thermal conductive layer 9 by molding the resin.
[0041]
No. of this application three The present invention is a vehicle interior component using the vehicle interior material according to the present invention described above. Applicable parts of vehicle interior materials include doors, front fenders, rear fenders, headlinings, pillars, instrument panels, dash panels, floor panels, trunk partition walls, and rear parcels. The vehicle interior material of the present invention may be applied to only a part of these portions. The vehicle interior environment can be improved by applying the vehicle interior material of the present invention to these parts.
[0042]
【Example】
The present invention will be described using examples and comparative examples, but the present invention is not limited to the examples described below. Details about Examples 1 to 26 and Comparative Examples 1 and 2 are shown at the end of the Examples column as Tables 1 to 3.
[0043]
<Example 1>
A high heat conductive layer and a water vapor adsorption / desorption cold heat storage material were sequentially laminated on the back surface of the vehicle door interior trim material on the side of the outer panel to obtain a vehicle interior material.
[0044]
The interior trim material used polypropylene resin as a base material, and contained 5% by mass of carbon fiber as a filler with respect to the mass of the interior trim material. The thickness of the interior trim material was 2.5 mm.
[0045]
The high thermal conductivity layer used acrylic resin (polymethyl acrylate) as a base material, and contained carbon black as a high thermal conductivity filler in an amount of 25% by mass with respect to the mass of the high thermal conductivity layer. The thickness of the high thermal conductivity layer was 0.5 mm.
[0046]
The water vapor adsorbing and desorbing cold heat storage material used was a non-woven fabric obtained by mixing water vapor adsorbing and desorbing fibers and high thermal conductivity fibers. As the water vapor adsorbing / desorbing fiber, a polypropylene fiber coated with 30% by mass of a polymer adsorbent (sodium polyacrylate) as a water vapor adsorbing / desorbing agent was used. Carbon fiber was used as the high thermal conductive fiber. The mixing ratio of carbon fibers in the nonwoven fabric was 25% by mass with respect to the total amount of polypropylene fibers and carbon fibers. Therefore, this water vapor adsorption / desorption cold heat storage material corresponds to the high thermal conductivity water vapor adsorption / desorption cold heat storage material in the present application. In addition, the basis weight of the water vapor adsorption / desorption cold heat storage material is 350 g / m ² The thickness was 5 mm.
[0047]
The performance of this vehicle interior material was evaluated by investigating the temperature change of the interior trim material on the vehicle interior side surface in a car parked under hot weather. The window glass of the car used for the evaluation was covered with a light reflecting heat insulating material so that direct sunlight did not enter.
[0048]
The temperature of the outside air was 27 ° C. at 7 o'clock, the maximum temperature was 33 ° C. around 14:00, and the temperature dropped to 27 ° C. after 19:00. On the other hand, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9 o'clock to 19 o'clock.
[0049]
<Example 2>
An interior material for a vehicle was obtained in the same manner as in Example 1 except that the carbon fiber mixing ratio in the water vapor adsorbing / desorbing cold heat storage material was changed to 5% by mass.
[0050]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27.5 ° C. from 9:00 to 19:00.
[0051]
<Example 3>
An interior material for a vehicle was obtained in the same manner as in Example 1 except that the carbon fiber mixing ratio in the water vapor adsorption / desorption cold storage material was 75% by mass.
[0052]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the interior trim material surface temperature on the passenger compartment side was maintained at 27 ° C. at 9 o'clock and 11:30, but at 14:00 and 16:00 The temperature rose slightly to 33 ° C. in 30 minutes and was 32 ° C. at 19:00.
[0053]
<Example 4>
A vehicle interior material was obtained in the same manner as in Example 1 except that the carbon fiber mixing ratio in the water vapor adsorption / desorption cold storage material was 90% by mass.
[0054]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the interior trim material surface temperature on the passenger compartment side was 27 ° C. at 9 o'clock, but became 33 ° C. at 11:30 and 14:00. And at 16:30, it became 37 degreeC, and it was 32 degreeC at 19:00.
[0055]
<Example 5>
A vehicular interior material was obtained in the same manner as in Example 1 except that the water vapor absorption / desorption cold storage material was formed without mixing the carbon fiber.
[0056]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 28 ° C. from 9:00 to 19:00.
[0057]
<Example 6>
A vehicle interior material was obtained in the same manner as in Example 1 except that the content of carbon black contained as a high heat conductive filler in the high heat conductive layer was 10 mass%.
[0058]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 28 ° C. from 9:00 to 19:00.
[0059]
<Example 7>
A vehicle interior material was obtained in the same manner as in Example 1 except that the content of carbon black contained as a high heat conductive filler in the high heat conductive layer was 50 mass%.
[0060]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 28 ° C. from 9:00 to 19:00.
[0061]
<Example 8>
A vehicle interior material was obtained in the same manner as in Example 1 except that the content of carbon black contained in the high heat conductive layer as the high heat conductive filler was 70% by mass.
[0062]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the interior trim material surface temperature on the passenger compartment side was 29 ° C at 9 o'clock, but it was 11:30, 14:00 and 16:30. Was 32 ° C. and 31 ° C. at 19:00.
[0063]
<Example 9>
A high heat conductive layer was not laminated, and a water vapor adsorption / desorption cold heat storage material was laminated on the back surface of the interior trim material for vehicle doors on the outer panel side to obtain a vehicle interior material. The configurations of the interior trim material and the water vapor adsorption / desorption cold heat storage material were the same as those in Example 1.
[0064]
The performance of the vehicle interior material was evaluated in the same manner as in Example 1. As a result, the interior trim material surface temperature on the passenger compartment side was 28 ° C at 9 o'clock and maintained at 29 ° C from 11:30 to 19:00.
[0065]
< reference Example 1 >
A high heat conductive layer was not laminated, and a water vapor adsorption / desorption cold heat storage material was laminated on the back surface of the interior trim material for vehicle doors on the outer panel side to obtain a vehicle interior material. Moreover, the water vapor absorption / desorption cold storage material was formed without mixing carbon fibers. Other than that was carried out similarly to Example 1, and obtained the interior material for vehicles.
[0066]
The performance of the vehicle interior material was evaluated in the same manner as in Example 1. As a result, the interior trim material surface temperature on the passenger compartment side was 28 ° C at 9 o'clock and maintained at 30 ° C from 11:30 to 19:00.
[0067]
<Example 10 >
A vehicle interior material was obtained in the same manner as in Example 1 except that copper fiber was used instead of carbon fiber as the high thermal conductive fiber.
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0068]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0069]
<Example 11 >
A vehicle interior material was obtained in the same manner as in Example 1 except that aluminum fiber was used instead of carbon fiber as the high thermal conductive fiber.
[0070]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0071]
<Example 12 >
A vehicle interior material was obtained in the same manner as in Example 1 except that polypropylene fiber in which 15% by mass of carbon black was kneaded instead of carbon fiber was used as the high thermal conductivity fiber mixed with the water vapor adsorbing / desorbing fiber. .
[0072]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0073]
<Example 13 >
A vehicle interior material was obtained in the same manner as in Example 1 except that polypropylene fiber in which 15% by mass of carbon fiber was kneaded instead of carbon fiber was used as the high thermal conductivity fiber mixed with the water vapor adsorbing / desorbing fiber. .
[0074]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0075]
<Example 14 >
An interior material for a vehicle was obtained in the same manner as in Example 1 except that polypropylene fiber coated with 30% by mass of copper was used instead of carbon fiber as the highly thermally conductive fiber mixed with water vapor adsorbing / desorbing fiber.
[0076]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0077]
<Example 15 >
An interior material for a vehicle was obtained in the same manner as in Example 1 except that polypropylene fiber coated with 30% by mass of aluminum was used instead of carbon fiber as the highly thermally conductive fiber mixed with water vapor adsorbing / desorbing fiber.
[0078]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0079]
<Example 16 >
A vehicle interior material was obtained in the same manner as in Example 1 except that urethane resin (triisocyanate) was used instead of acrylic resin (polymethyl acrylate) as the base material of the high thermal conductivity layer.
[0080]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0081]
<Example 17 >
A vehicle interior material was obtained in the same manner as in Example 1 except that polypropylene resin was used instead of acrylic resin (polymethyl acrylate) as the base material of the high thermal conductivity layer.
[0082]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0083]
<Example 18 >
A vehicle interior material was obtained in the same manner as in Example 1 except that polyester resin (polyethylene terephthalate) was used instead of acrylic resin (polymethyl acrylate) as the base material of the high thermal conductivity layer.
[0084]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0085]
<Example 19 >
As the high thermal conductivity fiber of the water vapor adsorption / desorption cold storage material, we used a woven or knitted fabric mixed with water vapor adsorption / desorption fiber and high thermal conductivity fiber, and weaved and knitted to make a raised fiber structure A vehicle interior material was obtained in the same manner as in Example 1 except that.
[0086]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0087]
<Example 20 >
Example 1 except that a polypropylene adsorbent coated with a polymer adsorbent was used as the water vapor adsorbing / desorbing fiber of the water vapor adsorbing / desorbing cold heat storage material, instead of using a fiber made of a sodium polyacrylate adsorbent. In the same manner as above, a vehicle interior material was obtained.
[0088]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0089]
<Example 21 >
A vehicle interior material was obtained in the same manner as in Example 1 except that instead of coating with a polymer adsorbent as a water vapor adsorbing and desorbing agent, a zeolite was coated.
[0090]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 27 ° C. from 9:00 to 19:00.
[0091]
<Example 22 >
A vehicle interior material was obtained in the same manner as in Example 1 except that silica gel was coated instead of coating the polymer adsorbent as the water vapor adsorbing and desorbing agent.
[0092]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the interior trim material surface temperature on the cabin side was 27 ° C. at 9 o'clock and 11:30, but it was 14:00 and 16:30. The minute was 30 ° C, and it was 29 ° C at 19:00.
[0093]
<Example 23 >
A vehicle interior material was obtained in the same manner as in Example 1 except that activated carbon was coated instead of coating the polymer adsorbent as the water vapor adsorbing and desorbing agent.
[0094]
When the performance of the interior material for a vehicle was evaluated in the same manner as in Example 1, the interior trim material surface temperature on the passenger compartment side was maintained at 27 ° C. from 9:00 to 14:00, and 30 ° C. at 16:30. It was 29 ° C. at 19:00.
[0095]
<Example 24 >
A vehicle interior material was obtained in the same manner as in Example 1 except that a polyurethane foam having an open cell structure containing 30% by mass of a polymer adsorbent (sodium polyacrylate) was used as the water vapor adsorption / desorption cold heat storage material. It was. The surface density of the polyurethane foam is 300 g / m. ² The thickness was 5 mm.
[0096]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 28 ° C. from 9:00 to 19:00.
[0097]
<Example 25 >
Example 25, except that carbon black was further added as a high heat conductive filler in the water vapor adsorption / desorption cold heat storage material made of polyurethane foam in an amount of 15% by mass relative to the mass of the water vapor adsorption / desorption cold heat storage material. In the same manner as above, a vehicle interior material was obtained.
[0098]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the vehicle interior side surface temperature of the interior trim material was maintained at 28 ° C. from 9:00 to 19:00.
[0099]
<Comparative Example 1>
Vehicle interior materials consisting only of vehicle door interior trim materials were prepared. The interior trim material used was a polypropylene resin as a base material. The thickness of the interior trim material was 2.5 mm.
[0100]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the interior trim material surface temperature on the passenger compartment side was 29 ° C. at 9 o'clock, but it was 37 ° C. at 11:30 and 14:00. The temperature reached 39 ° C., reached 38 ° C. at 16:30, and was 33 ° C. at 19:00.
[0101]
<Comparative example 2>
A vehicle interior material was prepared which consisted of only the interior trim material for headlining and did not have a high thermal conductivity layer or water vapor adsorption / desorption cold heat storage material. The interior trim material was polyvinyl chloride (PVC) as a base material. The thickness of the interior trim material was 1 mm.
[0102]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the interior trim material surface temperature on the passenger compartment side was 29 ° C. at 9 o'clock, but was 37 ° C. at 11:30, and 14:00 The temperature reached 39 ° C., reached 38 ° C. at 16:30, and was 33 ° C. at 19:00.
[0103]
<Comparative Example 3>
Vehicle interior materials consisting only of vehicle door interior trim materials were prepared. For the interior trim material, polypropylene resin was used as a base material, and carbon fiber as a filler was contained in an amount of 5% by mass with respect to the mass of the interior trim material. The thickness of the interior trim material was 2.5 mm.
[0104]
When the performance of the vehicle interior material was evaluated in the same manner as in Example 1, the interior trim material surface temperature on the passenger compartment side was 29 ° C. at 9 o'clock, but it was 37 ° C. at 11:30 and 14:00. The temperature reached 39 ° C., reached 38 ° C. at 16:30, and was 33 ° C. at 19:00.
[0105]
[Table 1]

[0106]
[Table 2]

[0107]
[Table 3]

[0108]
As shown in the above examples, the vehicle interior material of the present invention has an excellent heat dissipation performance, so that the temperature in the passenger compartment can be improved under severe conditions.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of an embodiment of a vehicle interior material according to the present invention.
FIG. 2 is a schematic view showing an embodiment in which the vehicle interior material according to the present invention is applied to a door.
FIG. 3 is a schematic cross-sectional view of another embodiment of a vehicle interior material according to the present invention.
FIG. 4 is a schematic sectional view showing a conventional vehicle interior material.
[Explanation of symbols]
1,101 Interior trim material
3 Water vapor absorption / desorption cold storage material
5 gap
7 Door skin panel
9 High thermal conductivity layer

Claims (10)

It has a water vapor adsorption and desorption of cold heat storage material, the water vapor adsorption and desorption of cold heat storage materials, vehicle interior materials, wherein the混毛rate contains 5 to 75 wt% of the high thermal conductivity fibers.   The vehicular interior material according to claim 1, wherein the water vapor adsorbing / desorbing cold heat storage material is disposed on the vehicle body exterior side of the interior trim material.   3. The vehicle according to claim 1, wherein the water vapor adsorbing / desorbing cold heat storage material includes a polymer adsorbent, a fiber coated with zeolite, silica gel or activated carbon, or a sodium polyacrylate fiber. 4. Interior material. The high thermal conductivity fiber is at least one selected from the group consisting of carbon fiber, copper fiber, aluminum fiber, polymer fiber containing carbon black or carbon fiber, and resin fiber coated with copper or aluminum. The vehicle interior material according to any one of claims 1 to 3, wherein The vehicular interior material according to any one of claims 1 to 4 , wherein the water vapor adsorption / desorption cold heat storage material is a nonwoven fabric and / or a raised fiber structure. The interior trim material has a water vapor adsorption / desorption cold heat storage material on the outside of the vehicle body , and a high thermal conductivity layer made of resin is laminated between the interior trim material and the water vapor adsorption / desorption cold heat storage material. car dual-purpose interior material it said. The vehicle interior material according to claim 6 , wherein the high thermal conductivity layer includes a high thermal conductivity filler in an amount of 10 to 50 mass% with respect to the mass of the high thermal conductivity layer. The vehicle interior material according to claim 7 , wherein the high thermal conductive filler is at least one of carbon black and carbon fiber. Resin for forming the high thermal conductive layer, an acrylic resin, urethane resin, in any one of claims 6-8, characterized in that it is polypropylene resin and one or more selected from the group consisting of a polyester resin The interior material for vehicles as described. A vehicle interior component using the vehicle interior material according to any one of claims 1 to 9 .

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