JPH09272111A - Cement composition for mounting radio wave absorption tile, and extrusion molding method thereof - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide a high-performance radio wave absorption tile that is long-term reliable in terms of adhesiveness, with reduced manufacturing cost. SOLUTION: A radio wave absorbing material 18 made of a plate-like carbon material or a ferrite material having a thickness of 3 mm or more is attached to the back surface of a tile main body 22, and the radio wave absorbing material 18 and the tile main body 22 respectively have unevenness. The portions 26 and 27 are fitted to each other, and the concave and convex portions 26 and 27 are integrally formed by the bar-shaped connecting metal fittings 28 penetrating in the lateral direction to form an integrated radio wave absorption tile 8. The radio wave absorption tile 8 is extruded. It is embedded in the surface of the molded cement composition 21 to form a radio wave absorption tile mounting cement composition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tile-mounting cement composition used for outer wall members, permanent formwork, earthquake resistant walls, balustrades, sound insulation walls, marine structures and the like in the field of building civil engineering.

[0002]

2. Description of the Related Art Although this type of radio wave absorbing tile is known, a ferrite material generally used as a radio wave absorbing material for this tile has a large specific gravity of 5, so that the radio wave absorbing tile is used as an outer wall member or a permanent formwork. When the adhesive mortar is applied to the above, in order to increase the adhesive strength, a metal material such as an anchor bolt is used in addition to the above-mentioned adhesive mortar to bond with the cement composition such as the outer wall member. For this reason, as a method for molding a cement composition integrally attached to a radio wave absorption tile, it can be produced only by a so-called pouring batch production method.

On the other hand, when extrusion molding capable of continuous production is used, it is shown in FIGS. 11 to 13 (Japanese Patent Laid-Open No. 59-9758).
3), the cement composition 16 is in an uncured state immediately after extrusion molding, and the fine aggregate 17 is applied to the surface of the cement composition 16 and the radio wave absorbing tile 20 or the like is pressed through the adhesive 19. There is a need to. Therefore, in the conventional method, the tile 20
While pressing down the shape of the extrusion-molded cement composition,
Since the batch processing is performed off-line, the manufacturing cost becomes high. Further, since there are materials having different thermal properties and dry-wet elongation between the extruded cement composition and the radio wave absorption tile, there is a problem that the long-term adhesive strength is low in reliability.

[0004]

As described above, the conventional radio wave absorbing tile mounting composition has problems that productivity and reliability are low and manufacturing cost is high.

The present invention is an improvement over the above-mentioned drawbacks, and provides a radio wave absorbing tile mounting cement composition which can be manufactured by a continuous production method with high performance, high reliability and low cost, and an extrusion molding method thereof. With the goal.

[0006]

In order to achieve the above-mentioned object, a radio wave absorption tile mounting cement composition according to the present invention comprises:
A plate-shaped electromagnetic wave absorbing material made of a carbon material or a ferrite material having a thickness of 3 mm or more is attached to the back surface of the tile main body, and the electromagnetic wave absorbing material and the tile main body are fitted with their respective uneven portions, and A feature is that a bar-shaped connecting metal fitting penetrates each concavo-convex portion in the lateral direction to form a radio wave absorption tile in which the both are integrated, and the radio wave absorption tile is embedded in the surface of the extruded cement composition.

In the radio wave absorbing tile mounting cement composition according to the present invention, a plate-shaped radio wave absorbing material made of a carbon material or a ferrite material having a thickness of 3 mm or more is attached to the back surface of the tile main body to obtain the above-mentioned radio wave absorbing material. A slit provided penetrating the plate-shaped portion in the front-back direction, and a dovetail-shaped concave portion provided on the radio wave absorbing material contact surface of the tile body so as to communicate with the slit, the extrusion molded cement composition. It is characterized by being filled.

The method of extrusion molding a tile-mounting cement composition according to the present invention comprises polymerizing a radio wave absorbing material made of a carbon material or a ferrite material and a tile body on a tile-mounting bed held by a synthetic resin or a metal plate. With a radio wave absorption tile formed of, the tile mounting bed is extruded from the tile introduction sleeve portion that penetrates from the outside of the die into the extrusion molding die that forms the outer surface of the extrusion molded cement composition, It is characterized in that the raw material mortar of the cement composition is press-fitted from the other inlet of the molding die to join and join each other inside the die.

According to the present invention, the cement composition mounted on the radio wave absorbing tile adopts the extrusion molding technique as its continuous production method, and the carbon material or the ferrite material having the thickness of 3 mm or more is formed on the uneven back surface of the ceramic style body. The radio wave absorbing material consisting of the above is attached, and the radio wave absorbing tile in which the both are joined by, for example, mortar filling into the rod-shaped connecting fitting or the dovetail groove is inserted into the die of the extrusion molding device, and the radio wave absorbing tile of the die is Since the mortar mainly composed of the cement composition extruded from the other entrance is pressed and integrated inside the mold to obtain a radio wave absorbing tile mounted cement composition, the long-term radio wave absorbing tile adhesiveness is concerned. A highly reliable and high-performance radio wave absorption tile is obtained, and the manufacturing cost is reduced.

Furthermore, by using a radio wave absorbing material such as a carbon material or a ferrite material having slits, a layer of the cement composition is formed after the extrusion molding between the carbon material or the ferrite material and the ceramic style. The reliability of the adhesiveness of a typical electromagnetic wave absorption tile is further enhanced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 show a radio wave absorption tile mounting cement composition produced by the extrusion molding method of the present invention, and FIGS. 3 and 4 show the cement composition. The radio wave absorption tile 8 according to the first example used in the composition is shown, the radio wave absorption tile 8a according to the second example is shown in FIGS. 5 and 6, and the radio wave absorption tile 8a according to the second example is shown in FIGS. A radio wave absorption tile 8b according to three examples is shown.

First, referring to FIGS. 1 to 4, a radio wave absorbing tile 8 is embedded in the surface of a rectangular extrusion molded cement composition 21. This radio wave absorption tile 8
A plate-shaped electromagnetic wave absorbing material 18 made of a carbon material or a ferrite material having a thickness of 3 mm or more is integrally fixed to the back surface of the tile body 22. As this fixing means,
In the radio wave absorbing tile 8, a plurality of slits 23 penetrating in the front-back direction are provided in the plate-shaped portion of the radio wave absorbing material 18, and the radio wave absorbing material contact surface 24 of the tile body 22 is communicated with the slits 23. A dovetail-shaped recess 25 is formed in the groove, and the slit 23 and the dovetail-shaped recess 25 are filled with the extrusion-molded cement composition 21 so that the radio wave absorbing material 18 and the tile body 22 are integrated. The fixed radio wave absorption tile 8 is configured. Moreover,
At the same time, the radio wave absorption tile 8 is pushed into the surface of the extrusion-molded cement composition 21 to form an integrated radio wave absorption tile-mounting cement composition.

A radio wave absorbing tile 8a according to a second example is shown in FIGS. In this second example, the thickness is 3 mm
As means for integrally fixing the plate-shaped electromagnetic wave absorbing material 18 made of the above carbon material or ferrite material to the back surface of the tile body 22, the electromagnetic wave absorbing material 18 and the tile body 22 are used.
The concave and convex portions 26, 2 that are fitted to each other on their respective contact surfaces.
7 is provided, and the bar-shaped connecting fitting 28 is penetrated in the lateral direction of the uneven portions 26 and 27. In this second example,
The rod-shaped connecting metal fitting 28 is used for the electromagnetic wave absorbing material 18 and the tile body 22.
Since and are integrated, the contact surfaces of both do not have to be filled with mortar. In addition, in FIG. 5 and FIG. 6, reference numeral 33 denotes a hook which is planted in the radio wave absorbing material 18 in order to firmly bond the extrusion molded cement composition 21 and the radio wave absorbing material 18.

7 and 8 show a radio wave absorption tile 8b as a third example of the present invention. The radio wave absorption tile 8b of the third example is replaced with the dovetail-shaped recess 25 in the configuration of the first example, and is simply a U-shaped recess 29. Since the other configurations are the same as those of the radio wave absorption tile 8 of the first example, the same elements are denoted by the same reference numerals and duplicate description will be omitted.

Next, an example of an apparatus for continuously producing a cement composition for mounting an electric wave absorbing tile of the present invention will be described with reference to FIGS. 9 and 10.

In each drawing, a screw 2 for feeding the raw material mortar 15 is provided inside the discharge part 1 of the extruder.

A discharge pipe 3 of the raw material mortar 15 is connected to the discharge part 1 of the extrusion molding machine, and an extrusion mold 4 for controlling the outer peripheral shape of the molded product is attached to the discharge part at the other end. .

A tile-introducing sleeve portion 5 penetrates from the outside of the rear portion of the extrusion molding die 4. In front of the tile introduction sleeve portion 5, a support steel plate 11 forming the lower part of the mold 4 is provided, and a retracting belt 12 is arranged so as to move on the upper surface of the support steel plate 11. The retractable belt 12 is the support steel plate 11 described above.
Drive rollers 10 for retracting belts provided at both front and rear ends
It is hung on.

In the case of producing an extrusion-molded cement composition having a hollow portion, the core is arranged in the extrusion-molding die 14 via a core holder. In FIG. Are not shown. The choke die 6 adjusts the flow rate of the raw material mortar 15. Reference numeral 13 is an extrusion speed detection roller.

As shown in FIG. 9, the radio wave absorbing tiles 8 and the like are supported by the recesses 6 formed on the tile device bed 9 in a predetermined arrangement. Further, since the radio wave absorbing tile 8 has the radio wave absorbing material 18 having a high specific gravity such as a ferrite material, the tile mounting bed 9 is configured to be held in advance by the holding member 31 made of resin or metal. . Further, the pinch roll 7a of the feeder device 7 that pushes the tile mounting bed 9 into the tile introducing sleeve portion 5 is driven by an electric motor (not shown).

The operation of the device will be described. The raw material mortar 5 is generally pressure-fed into the mold 4 from the mortar inlet 30 of the extrusion-molding die 4 from the pressure-feeding screw 2 of the mortar extrusion-molding machine containing cement for autoclave, the discharge pipe 3, and the like.

On the other hand, the radio wave absorbing tiles 8 are fed to the tile introducing sleeve portion 5 by the feeder device 7 while being lined up and held on the tile mounting bed 9 which is held by the holding member 31 made of metal or resin in advance.

The radio wave absorbing tile 8 and the raw material mortar 5 meet each other inside the extrusion molding die 4, but at this time, the raw material mortar 15 is gradually compressed in the die 4,
While being pressed into the dovetail-shaped recess 25 on the back surface (the upper surface in FIG. 8) of the side surface of the radio wave absorbing tile 8 and the slit 23 of the radio wave absorbing material 18, the tile mounting bed 9 and the radio wave absorbing tile 8 are integrated. The process proceeds inside the mold 4.

During this process, the taper of the inner periphery of the mold 4 further compresses the ribs 9b of the tile mounting bed 9 to form the joints of the raw material mortar 15 and to mold the outer peripheral portion of the molded product. Extrusion from the mold 4 completes the extrusion of the radio wave absorption style wearing cement composition.

Thereafter, as shown in FIG. 9, the radio wave absorbing tile-attached cement composition is cut to a fixed length by the cutter 14 installed along the length of the tile-attached bed 9 along the guide roll 32. Then, it is carried on a tray, and then carried out to a curing cabinet (not shown), and is hardened and cured to a strength at which the ceramic style cement composition can be removed.

After the strength of the cement composition reaches the level capable of stripping, the cement composition is discharged to the outside, where the tray is removed by the stripping device. After that, the tile mounting bed peeling device equipped with an absorption pad or the like is used to peel off the tile mounting bed 9 adhering to the back surface of the cement composition, and it is inserted into an autoclave, and high temperature and high pressure steam curing is performed to the product strength to complete the product. Let

The tile mounting bed 9 is prepared for the next extrusion molding by arranging the radio wave absorbing tiles 8 again on the tile mounting bed 9 after washing with water.

[0028]

As described above, according to the present invention,
It becomes possible to industrially continuously produce a radio wave absorption tile mounting cement composition, and at low cost, it is possible to provide a radio wave absorption tile mounting cement composition with high long-term reliability regarding the adhesiveness of the radio wave absorbing tile. There is an effect that.

[Brief description of drawings]

FIG. 1 is a cutaway perspective view of a tile-mounting cement composition according to an example of the present invention.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is a perspective view of a tile-mounting cement composition according to another example of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a perspective view of a tile-mounting cement composition according to still another example of the present invention.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a perspective view of a tile mounting cement composition according to still another example of the present invention.

FIG. 8 is a sectional view taken along line CC of FIG.

FIG. 9 is a vertical cross-sectional view of the main part of the continuous production apparatus for cement composition according to the present invention.

FIG. 10 is a sectional view taken along line DD of FIG. 9;

FIG. 11 is a perspective view of a conventional tiled panel.

FIG. 12 is a sectional view taken along line EE of FIG. 11;

FIG. 13 is a sectional view taken along line FF of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Discharge part of extrusion molding machine 2 Screw for pressure feeding 3 Discharge pipe 4 Mold for extrusion molding 5 Tile introduction sleeve part 6 Choke die 7 Feeder device 8, 8a Radio wave absorption tile 9 Tile mounting bed 10 Driving roller 11 Support steel plate structure 12 Pulling belt 13 Extrusion speed detection roller 14 Cutting machine 15 Mortar 16 Cement composition 17 Fine aggregate 18 Radio wave absorbing material 19 Adhesive 20 Tile 21 Extrusion molding cement composition 22 Tile body 23 Slit 24 Contact surface 25 Dovetail groove 26 Concavo-convex portion 27 Concavo-convex portion 28 Rod-shaped coupling fitting 29 U-shaped concave portion 30 Mortar inlet 31 Holding member 32 Guide roll 33 Metal hook

Claims (3)

[Claims] 1. A plate-shaped electromagnetic wave absorbing material made of a carbon material or a ferrite material having a thickness of 3 mm or more is mounted on the back surface of the tile main body, and the electromagnetic wave absorbing material and the tile main body are fitted with respective uneven portions. A radio-wave absorption tile in which both are integrated, and the rod-shaped connecting metal fittings penetrate each concave-convex portion in the lateral direction to form an integrated radio-wave absorption tile, and the radio-wave absorption tile is embedded in the surface of the extruded cement composition. A cement composition for mounting an electromagnetic absorption tile, characterized by: 2. A plate-shaped electromagnetic wave absorbing material made of a carbon material or a ferrite material having a thickness of 3 mm or more is mounted on the back surface of the tile body, and the plate-shaped portion of the electromagnetic wave absorbing material is provided so as to penetrate in the front-back direction. And a slit, and the dovetail-shaped recess provided on the radio wave absorbing material contact surface of the tile body so as to communicate with the slit is filled with the extrusion molded cement composition. Mounting cement composition. 3. A tile mounting bed held by a synthetic resin or a metal plate is fitted with a radio wave absorbing tile formed by polymerizing a radio wave absorbing material made of a carbon material or a ferrite material and a tile body. The inside of an extrusion molding die for extruding the outer surface of the extrusion molding cement composition is extruded from a tile introduction sleeve portion that penetrates from the outside of the die, and from the other inlet of the molding die. A method for extrusion-molding a tile-mounting cement composition, in which raw material mortar for a cement composition is press-fitted and joined together in the mold.