JPS62121049A - Ceramic molded shape - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a ceramic molded body having mechanical strength and used in buildings, structures, outer wall materials, and roof materials.

In particular, the above-mentioned molded body is a molded body fired under high heat of 800° C. or higher, and relates to a ceramic molded body that can exhibit sufficient strength against bending, impact, and frost damage.

[Conventional technology]

When firing clay such as Kibushi clay, Frogme clay, and Shigaraki clay to form tiles, roof tiles, etc., the temperature is 1 due to water absorption and frost damage.
It was fired at 200-1250°C. Additionally, various short fibers can be added to increase the strength of clay members, as described in, for example, JP-A-49-107007 and JP-A-5.
No. 6-88885 is known. Furthermore, 120
Among the ceramic molded bodies fired at 0°C, there was no one in which inorganic fibers were incorporated without much loss of properties.

[Problem that the invention seeks to solve]

However, when these clays are fired at around 1200℃, while the water absorption rate can be reduced, the shrinkage rate increases,
In addition, the firing temperature increases, which increases the cost of energy conversion.Furthermore, it warps or becomes dense during firing, resulting in a lack of impact resistance. In addition, low-temperature (below 800°C) fired products (ceramics) that combine clay and inorganic fiber structures have only improved impact resistance than fired products that do not use fibers, and these can only be achieved using well-known technology. be. Furthermore, when molding clay alone before firing, it lacks shape retention, so the wall thickness needs to be increased depending on the shape, and on top of that, slippage (plasticity) during extrusion is poor, resulting in uneven density, shape collapse, etc. There were disadvantages such as cracks and lamination.

[Means for solving problems]

The present invention incorporates an alumina-silicate fiber board made of long and short fibers formed into a curled shape that can cope with shrinkage during firing, or a type of sheet-like material thereof, into a clay material for firing. It is a ceramic molded body that has excellent mechanical strength (bending and impact) and can be easily formed into dough.

[For production]

As in the present invention, the clay material is fired by incorporating an alumina silicate fiber board made of one or more types of long and short fibers formed into a curled shape, or a type of sheet-like material thereof (including a net-like material) into the clay material. It has excellent tensile, bending, and impact strength, eliminates frost damage, which is the weak point of ceramics, significantly reduces water absorption and shrinkage, and has a melting point of 50% during firing. ℃, which reduces energy consumption costs and thermal conductivity, has excellent weather resistance, is lighter than conventional ceramic molded bodies, and has excellent heat insulation properties.

〔Example〕

EMBODIMENT OF THE INVENTION Below, one Example of the ceramic molded object based on this invention is described in detail using drawings. That is, FIG. 1 is a perspective view showing an example of the above-mentioned molded body, and the soil is a ceramic molded body made of an alumina-silicate fiberboard formed into a curled shape on fired clay 2, or one or more of its sheet-like products 3. It has a built-in To explain further, the ceramic molded body has a structure in which an alumina-silicate fiber board or a type 3 of its sheet-like material is simultaneously incorporated into the clay material during extrusion molding, and the fired clay 2 is made of frog's eye clay as a dough, Clay, other types of clay found in various places
The raw material is a mixture of more than one type, preferably two or more types, in an appropriate ratio. In addition, if the clay used as the raw material is classified to have a particle size of, for example, 50 to 200 mesh, more favorable results can be obtained in terms of water absorption and the like. In addition, alumina silicate fiberboard (thickness 4, 6.
5 dragons, 10 seagulls), or a type of sheet-like material 3 (
The alumina silicate fiber 3a (hereinafter simply referred to as a sheet material) is formed into a curled shape as shown in FIGS. 2(a) to (e), and the height H is 0.5 to 1Qm.
It is formed at the m position. This sheet material 3 mainly contains reinforcing materials (during extrusion molding and after firing), heat insulating materials, shrinkage reducing materials during firing, corner point depressing materials (Mg (depending on h component), bending strength, impact resistance and weight reduction materials). It functions as an improvement material.To explain further, the overall shape of this sheet material 3 can be formed into the cross section shown in FIGS. , (Figure b1 is wire mesh 4
Mat-like sheet material 3 (C
Figure 1 shows a sheet material 3 in which the corners 3b of an unfired ceramic molded body to be formed into a gutter shape after extrusion molding are formed with a thick wall (the dJ diagram shows a sheet material 3 with a thickness of about 0.1 to 1 mm). ,
(Fig. 81 shows a sheet material 3 in which a plurality of through holes 3c are formed in the sheet material 3.

Here, to briefly explain the manufacturing method of the ceramic molded body according to the present invention, as the clay material, for example, a frog's eye clay prepared with hydrated bones arranged in 80 meshes is prepared,
As the sheet material 3, a sheet material 3 with a thickness of 1 crane formed by forming alumina silicate fibers with a thickness of 0.211 into a curl of H = 0.6 is fed from the middle of the extrusion molding machine,
A dough having a cross section as shown in FIG. 1 is extruded from the outlet. Note that the sheet material 3 is completely sand-inched with clay. Of course, FIG. 1 is shown enlarged. Next, this extruded product (perishable product) is fed to a dryer (not shown) placed after the die, and the water content is reduced from about 18% to about 1%. Here, cut to a standard length, for example 60
0 to 3000mm, feed it to the firing furnace, and heat it to 8 to 1
After going through the steps of preheating, firing, and slow cooling for 2 or 24 hours, a ceramic molded body as shown in FIG. 1 is obtained. Note that the firing temperature is approximately 800 to 1250°C. For example, it is fired at 1200°C. The following table shows a performance comparison between the example and a normal fired ceramic body.

What has been described above is an example of forming a ceramic molded body according to the present invention, in which asbestos fibers, glass powder, pulp, etc. are added to clay material in an amount of about 1 to 5% (weight ratio), extrusion, drying, It is also possible to calcinate, in which case the melting point is lowered,
This makes it possible to more effectively reduce water absorption and shrinkage. Furthermore, it can also be formed in the cross-sectional shape shown in FIG.

In other words, (Fig. 81 shows the sheet material 3 disposed near the surface layer of the ceramic molded body, and Fig. 81 shows the ALC on the back surface of the ceramic molded body as shown in Fig. 1.
On the ceramic molded body, a noncombustible board 5 such as foamed concrete, calcium silicate board, resin concrete, polymer cement board, etc. is integrally formed on the fired ceramic molded body,
(Figure C1 shows the sheet material 3 on the front and back sides of the ceramic molded body distributed near the screen, (Figure d1 shows the extrusion molded ceramic body on the ceramic molded body as shown in the figure, and the interior contains polyurethane foam, phenol foam, and polyisocyanurate foam. , on a ceramic molded body filled with foamed concrete 6 and using a metal plate 7 in the connection part, (e) figure is a flat plate shape of a roof board, (f) figure is a ceramic molded body formed for a stepped roof. It is also possible to form the cross section as shown in FIGS. 5(a) to (31). Note that the sheet material 3 is omitted from the illustration.

〔Effect of the invention〕

As described above, the ceramic molded article according to the present invention has excellent impact resistance and bending strength. ■No deformation during extrusion molding. ■Can be molded into any shape. ■Water absorption rate and shrinkage can be significantly reduced. ■Can be made lighter. ■Drying,
Firing time can be shortened and costs can be reduced. It has the following characteristics.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an example of a ceramic molded body according to the present invention, FIGS. 2(a) to (e) are explanatory diagrams explaining the fiber shape, and FIG. A schematic explanatory diagram showing an example of an alumina silicate fiberboard, etc., Fig. 4 (a
)~(''), FIG.・・・
- Alumina silicate fiberboard or a type of sheet-like material thereof, 3a...Alumina silicate fiber. Figure 1 f! '' Figure 3 Figure 10 Figure 5 Figure 5 /I- (b) (Yo) / and Figure 5 (?-1 and!- (rl'l) f'- r', - Figure S (f') Cν /Top (r)
/ L(Cl”

Claims (1)

[Claims] (1) A ceramic molded body characterized by integrally incorporating an alumina silicate fiberboard made of one or more types of long and short fibers formed into a curled shape in fired clay, or a type of sheet-like material thereof.