JP2521742Y2 - Honeycomb sandwich panel multilayer floorboard - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a multilayer floor panel of a honeycomb sandwich panel, and more particularly, to a multilayer floor panel of a honeycomb sandwich panel used for a double structure soundproof floor panel for a train. .

[Conventional technology]

Conventionally, as a honeycomb sandwich panel used for a double soundproof floor panel for a train, for example, as shown in FIG. 4, an aluminum face plate 3a, 3b with a foam sandwich panel and, as shown in FIG. 5, an aluminum honeycomb core 4
There is known an aluminum honeycomb core sandwich panel having aluminum face plates 6a and 6b mounted on the front and back surfaces thereof with an adhesive 5 therebetween.

[Problems to be solved by the invention]

However, in the above foam sandwich panel, the weight of the foam core material 1 such as urethane is heavier than that of the honeycomb core, and since the urethane foam material is not a non-combustible material, the calorific value is large, and when a fire occurs, There was a problem that there was a danger of a major disaster.

Further, in the case of the aluminum honeycomb sandwich panel, there is a problem that a so-called knack or knuckle sound is loud when the user walks in the vehicle.

[Purpose of the invention]

The present invention was devised in view of such conventional problems, and when used as a floor plate of a train, there is little reverberation sound when walking in a car, and it is nonflammable. It is an object of the present invention to provide a multilayer sandwich panel of a honeycomb sandwich panel which generates a small amount of heat even when it is melted and can be used safely.

[Means for solving the problem]

In order to achieve the above object, the present invention has a gist that at least one or more aluminum honeycomb cores and an aramid fiber honeycomb core impregnated with a phenol resin are laminated via a glass fiber-containing prepreg material. Things.

[Action of the invention]

The present invention is configured as described above, and is formed by integrally laminating an aluminum honeycomb core and an aramid fiber honeycomb core impregnated with a phenol resin via a prepreg material containing glass fiber, thereby achieving light weight and rigidity. And the transmission loss is large, so that the reverberation can be reduced even when used as a floor panel of a train.

[Example of the invention]

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a honeycomb sandwich panel 10 in which the present invention is implemented. This honeycomb sandwich panel 10 has an aluminum honeycomb core 11 as a core material and an aramid fiber honeycomb core 12 impregnated with a phenol resin (Nomex: (A product name of DuPont) through a prepreg material 13 in which glass fiber is impregnated with a phenol resin to form a two-layer structure, and 14a denotes an upper surface plate and 14b denotes a lower surface plate.

Honeycomb sandwich panel 10 configured in this way
For example, when used as the floorboard of the train of FIG. 2, between the seats 15 in the car, so as to be flush with one layer of the honeycomb sandwich panel 10a constituting the floorboard of the seat 15,
Moreover, the aramid fiber honeycomb core 12 is laid so as to face the upper surface.

Incidentally, the honeycomb sandwich panel 10 is not limited to the two-layer structure as described above, and may have a structure of three or more layers. For example, as shown in FIG. 3, the aramid fiber honeycomb core 12 is placed in the middle, A three-layer structure in which the aluminum honeycomb core 11 is laminated on the upper and lower sides via an adhesive layer 13 may be used.

Further, instead of the prepreg material 13 in which the glass fiber is impregnated with the phenol resin, a prepreg material in which the glass fiber is impregnated with a flame-retardant epoxy resin, for example, a brominated epoxy resin may be used.

The present invention is configured as described above, and is formed by integrally laminating an aluminum honeycomb core 11 and an aramid fiber honeycomb core 12 impregnated with a phenol resin via a prepreg material 13 containing glass fibers. Since it is lightweight, rigid, and has a large transmission loss, it can reduce reverberation even when used as a train floor panel.

[Effect of the invention]

This invention is configured by laminating at least one or more aluminum honeycomb cores and an aramid fiber honeycomb core impregnated with a phenol resin via a glass fiber-containing prepreg material as described above. It has excellent effects.

(A). By using the honeycomb core as the core material, it is lightweight and rigid.

(B). When an aramid fiber honeycomb core impregnated with a phenolic resin is laminated on the upper surface of an aluminum honeycomb core and used as a floor plate of a train in this state, it is possible to remarkably reduce the reverberation sound when walking inside the vehicle.

(C). By using a prepreg material containing glass fiber as the adhesive layer, it is possible to prevent the honeycomb cores from biting during manufacturing (at the time of the bonding step) while maintaining a light weight.

(D). By using an aluminum honeycomb core, an aramid fiber honeycomb core impregnated with phenolic resin, and a prepreg material impregnated with glass fiber with phenolic resin as a core material, a fire or the like occurs and the aluminum face plate is formed. Even if it is melted, the calorific value is small and safety can be improved.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a honeycomb sandwich panel in which the present invention is implemented, FIG. 2 is a cross-sectional view of the present invention when a passage portion of a train is used as a floor plate, and FIG. 3 is another embodiment of the present invention. FIG. 6 is a cross-sectional view of the conventional sandwich panel shown in FIGS. 4 and 5. 10: Honeycomb sandwich panel, 11: Aluminum honeycomb core, 12: Aramid fiber honeycomb core impregnated with phenolic resin, 13: Pre-preg material containing glass fiber.

Claims (1)

(57) [Scope of request for utility model registration] 1. A multilayer honeycomb sandwich panel comprising at least one or more aluminum honeycomb cores and an aramid fiber honeycomb core impregnated with a phenol resin laminated via a glass fiber-containing prepreg material. Floorboard.