JPH11301473A - Heat insulating material for rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the bad smell while preventing the gathering of mold by performing the antibacterial treatment, the mold-proof treatment and the deodorizing treatment to the heat insulating material. SOLUTION: The heat insulating material is fitted to the inner surface of a ceiling air duct 1 and the inside surface of a ceiling 2 and the inner wall 3 in the periphery of windows and doors. The air conditioning air fed through the air duct 1 is supplied into a car from a blow-out port 4. As a raw material of the heat insulating material, mixture of the flame retardant polyacrylonitrile fiber is used, and as components, 89.5% or more of the flame retardant polyacrylonitrile fiber, 10% or more of water and 0.5% or less of the oil solution are contained. The surface treating agent is obtained by adding about 31.3% of an anion surfactant or propylene glycol to the inorganic compound composed of silica, alumina and titanium oxide or the inorganic compound formed by adding silver to the described inorganic compound, and furthermore, adding water so as to form the treatment solution. In the case of performing the surface treatment to a raw material of the heat insulating material with the treatment solution, coating by spraying, coating by roll coater and impregnation with dipping is performed so as to adhere the treatment solution of the heat insulating material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating material for railway vehicles.

[0002]

2. Description of the Related Art A heat insulating material is installed in an air passage for air conditioning such as ventilation and cooling / heating in a railway vehicle for keeping heat and preventing dew condensation. Thereby, cooling and heating are efficiently performed, and the inside of the vehicle is maintained at a comfortable temperature state.

On the other hand, materials for railway vehicles are required to have strict noncombustibility or flame retardancy in order to prevent vehicle fire. For this reason, flammability determination test methods and flammability standards for railway vehicle materials are specified. According to this test method, a material to be tested is cut into a predetermined shape to prepare a sample, the sample is held at an angle, and alcohol disposed at a predetermined position is burned. Thus, the presence or absence of ignition of the sample, the state of smoke emission, the state of flame, the state after combustion, and the like are observed, and the nonflammability and flame retardancy are determined based on the standard. Railroad vehicle materials are required to be nonflammable or flame retardant depending on the location where the vehicle is used.

[0004] Therefore, a heat insulating material for railway vehicles must conform to the standards of such a material burning test for railway vehicles and have a predetermined heat insulating property.

[0005]

However, even when such a heat insulating material is used, if the temperature difference between the inside and outside of the air passage is large, the dew condensation is not hindered and the dew condensation water is kept inside the heat insulating material. Mold penetrates inside. When mold is generated in this way, it gives off a bad smell and causes discomfort, and is not preferable in terms of hygiene.

An object of the present invention is to provide a heat insulating material for a railway vehicle capable of preventing the generation of mold and eliminating a bad smell and providing a comfortable in-vehicle environment.

[0007]

According to the present invention, there is provided a railway according to the present invention, wherein an antibacterial treatment, an antifungal treatment or a deodorizing treatment is applied to a heat insulating material mounted inside a railway vehicle. Provide a heat insulating material for a vehicle.

[0008] According to this structure, since a material having an antibacterial, antifungal or deodorizing effect is applied instead of simply using a heat insulating material, the heat insulating material itself is made hygienic. As a result, the generation of mold is suppressed, and the odor due to the mold is prevented from dissipating in the vehicle, so that a comfortable vehicle environment is obtained.

Preferably, the heat insulating material is obtained by subjecting a flame-retarded polyacrylonitrile fiber to a surface treatment with a solution of an inorganic compound containing silica, alumina and titanium oxide.

[0010] By using such a material, incombustibility required as a railway material is ensured, and all of antibacterial, antifungal and deodorizing effects are obtained.

[0011]

FIG. 1 is a diagram showing the inside of a railway vehicle to which the present invention is applied. The heat insulating material according to the present invention is applied inside the ceiling airway 1 and the ceiling 2 (and / or small ceiling), and is further applied inside the inner wall 3 around windows and doors.
Air for cooling and heating sent through the air passage 1 is supplied from the air outlet 4 into the vehicle.

[0012]

The material of the heat insulating material according to the present invention is, for example, a mixture of flame-resistant polyacrylonitrile fiber, and the components are, for example, 89.5% or more of flame-resistant polyacrylonitrile fiber, 10% or more of water, and 0.5% of oil agent. % Or less. As such a material, for example, a material commercially available under the trade name: Rastan (Asahi Kasei Corporation) can be used.

In the present invention, such a heat insulating material is subjected to a surface treatment for imparting antibacterial, antifungal and deodorizing effects. Such a surface treating agent is prepared by adding an anionic surfactant and propylene glycol to an inorganic compound (ceramic powder) composed of silica, alumina, and titanium oxide or an inorganic compound obtained by adding silver to the inorganic compound to about 31.3%. A processing solution was prepared by adding water. An inorganic compound comprising silica, alumina and titanium oxide or an inorganic compound obtained by adding silver to such an inorganic compound constituting such a treating agent is, for example, one commercially available under the product name: Celaglaze (Nippon Water Treatment Engineering Co., Ltd.). Can be used.

In the case where the above-mentioned heat treatment material is subjected to surface treatment with such a treatment solution, the treatment solution can be applied to the surface of the material by spraying, coating with a roll coater or impregnation by dipping.

The heat-insulating material subjected to such a surface treatment has all of the antibacterial, antifungal and deodorizing effects. Further, this heat insulating material exhibits excellent nonflammability, and the prototype of the present applicant has been evaluated as nonflammable in the above-mentioned material combustion test for railway vehicles.

[0016]

As described above, in the present invention, instead of simply using a heat-insulating material, a material that has been treated with an antibacterial, antifungal or deodorizing effect is attached.
Insulation itself becomes hygienic, mold is suppressed, mold odor is prevented from dissipating inside the car,
A comfortable interior environment is obtained.

The heat-insulated material having been subjected to such a surface treatment can be easily obtained at the same time as the material and the treating agent for the heat-insulating material, and can be easily produced at low cost without a complicated manufacturing process. .

[Brief description of the drawings]

FIG. 1 is a diagram showing the inside of a railway vehicle to which the present invention is applied.

[Explanation of symbols]

 1: ceiling airway, 2: ceiling, 3: inner wall, 4: outlet.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Tetsuya Ikuyama 2-8 Kanda Ogawacho, Chiyoda-ku, Tokyo Sunny Central Building Unites Co., Ltd.

Claims (2)

[Claims] 1. A heat insulating material for a railway vehicle, wherein the heat insulating material to be mounted inside the railway vehicle is subjected to an antibacterial treatment, a fungicide treatment or a deodorizing treatment. 2. The railway according to claim 1, wherein the heat insulating material is made of a flame-retardant polyacrylonitrile fiber subjected to a surface treatment with a solution of an inorganic compound containing silica, alumina and titanium oxide. Thermal insulation for vehicles.