JPH0632415B2 - Method of manufacturing radio wave absorption panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a method of manufacturing a radio wave absorption panel.

(Prior Art) As the exterior finishing material for conventional radio wave absorption panels, stone materials, tiles and the like are used.

Among them, the stone-clad radio wave absorption panel is as shown in FIG.
A stone (b) with a ferrite tile board (a) as an electromagnetic wave absorber on the back is embedded in the concrete layer (c), and the concrete is attached via an anchor metal (d) attached to the stone (b). Stone material (b) is established in layer (c).

In the figure, (e) is a reinforcing bar.

In addition, the tiled electromagnetic wave absorption panel, as shown in FIG.
The tile (f) with leg pieces for anchors is embedded in the concrete layer (g), and a ferrite plate (h) as a radio wave absorber is fitted in a recess on the back surface of the tile (f).

In the figure, (i) is a reinforcing bar.

(Problems to be Solved by the Invention) In the case of the conventional stone-bonded radio wave absorption panel, since the stone material is fixed to the concrete layer through the anchor metal fitting attached to the back surface of the stone material, the stone material having a partially changed thickness In addition, in the case of a tiled electromagnetic wave absorption panel, a tile with long anchor leg pieces is required in order to fix it to the concrete layer, the weight of the exterior finishing material becomes large, and the thickness of the panel body also becomes large.

The present invention has been proposed in view of the above problems of the prior art, and the object of the present invention is to reduce the thickness of the exterior material and to provide a low-cost electromagnetic wave absorber that does not require high manufacturing accuracy. The point is to provide a manufacturing method.

(Means for Solving the Problems) In order to achieve the above-mentioned object, according to the method for manufacturing an electromagnetic wave absorption panel of the present invention, a reinforcing fiber material in which a part of the binding wire is embedded in advance is disposed, After placing the exterior concrete or mortar by applying it, and after hardening the same concrete or mortar, apply a resin adhesive that also serves as a waterproofing agent to the surface and adhere the ferrite plate to this, The reflector is arranged on the upper surface and the body is bound by the binding wire, and then the concrete concrete is placed on the upper surface of the exterior concrete or mortar.

(Operation) According to the method for manufacturing an electromagnetic wave absorption panel of the present invention, a binding wire, a part of which is previously embedded in concrete or mortar containing reinforcing fiber material as the exterior finishing material, is bonded to the concrete or mortar. In addition, the exterior finishing material, the ferrite plate, the reflector, and the concrete skeleton are integrated by binding the reflectors arranged over the surface of the ferrite plate.

(Examples) The present invention will be described below with reference to illustrated examples.

(1) is a concrete or mortar exterior finishing material for radio wave absorption panels.Before placing concrete, the reinforcing fiber material (2) is placed in the formwork to make non-shrinkable concrete or mortar 10 to 20 mm thick. Create by painting.

As the concrete or mortar, non-shrinkable concrete or mortar is used.Before placing the concrete or mortar, the reinforcing fiber material (2) is bound with a stainless steel wire or a binding wire (3) made of fibers. At the same time, the form (4) is arranged at the place where the electromagnetic wave absorber is arranged. Also, the joint surface of the concrete or mortar (1a)
Is formed on the rough surface. (Refer to FIG. 2) A resin adhesive (5) that also serves as a waterproofing agent is applied to the mark after the exterior finishing material (1) is cured and the form (4) is removed, and the ferrite plate unit (6) is applied. Mating and adhering.

As shown in FIG. 4, the ferrite plate unit (6) is constructed by arranging a required number of ferrite plates and bonding a spacer / connector (7) to the back surface thereof.

Next, a reflector (8) made of welded wire mesh is layered on the spacer / joint material (7) of the ferrite plate unit (6), and the reflector (8) is bound by the binding wire (3) to fix the position of the reflector (8). Fix it.
(Fig. 3) Next, rebar (9) of the skeleton part is laid out and the skeleton concrete is reinforced.
Placing (10), building concrete (10) and exterior finishing material
(1) A radio wave absorption panel in which a ferrite plate unit (6) as a radio wave absorber and a reflector (8) are integrated is manufactured.

(Effect of the Invention) According to the method for manufacturing an electromagnetic wave absorption panel of the present invention, the reinforcing fiber material is disposed, and the exterior concrete material or mortar is applied and cast to form the exterior finish material, thereby reducing the thickness. As a result, the electromagnetic wave absorption performance is improved.

Furthermore, according to the present invention, the exterior finish concrete,
Alternatively, by using a binding wire, a part of which is embedded in mortar, the reflectors provided on the ferrite plate adhered to the back surface of the exterior finishing material are bound to fix the reflectors at a predetermined position. After that, by pouring the skeleton concrete, the skeleton concrete and the exterior finishing material, the ferrite plate, and the reflector are integrally combined to manufacture a highly reliable radio wave absorption panel. The surface of the exterior finishing material can be surface-finished with an organic / inorganic material by spraying, brush coating, roller coating, or the like.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a radio wave absorption panel manufactured by the method of the present invention, FIGS. 2 and 3 are vertical sectional views showing the manufacturing process thereof, and FIG. 4 is a ferrite plate unit. A perspective view, FIG. 5 and FIG. 6 are vertical sectional views of a conventional radio wave absorption panel, respectively. (1)… Concrete or mortar exterior finishing material, (2)… Reinforcing fiber material, (3)… Binding wire, (6)… Ferrite board, (8)… Reflector, (10)… Concrete frame.

Claims (1)

[Claims] 1. A reinforcing fiber material in which a part of a binding wire is embedded in advance is disposed, and exterior concrete or mortar is applied and cast, and after the cast concrete or mortar is hardened, its surface is waterproofed. Apply a resin adhesive that doubles as an agent and adhere a ferrite plate to it, and place a reflector on the upper surface of the ferrite plate and bind with the binding wire, and then build concrete on the exterior concrete or mortar upper surface. A method for manufacturing an electromagnetic wave absorption panel, which comprises placing a.