JPH10130028A - Production of patterned crystallized-glass building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a crystallized-glass building material having a desired pattern on its surface by arranging an inorg. pigment powder or a mixture of the powder and a glass small body on the specified glass small body accumulated in a formwork and heat-treating it. SOLUTION: The glass small body contg., by weight, 45-77% SiO2 , 1-25% Al2 O3 , 2-25% CaO, 0-18% ZnO, 0-20% BaO, 0-17% MgO, 1-15% Na2 O, 0-7% K2 O and 0-5% Li2 O and 0-10% colored oxide such as NiO, MnO2 and Cr2 O3 , depositing β-wollastonite and diopside, depositing a needle crystal from the surface toward the inside while being softened and deformed when heat-treated above the softening point and having 0.5-10mm diameter is accumulated in a formwork. Subsequently, an inorg. pigment powder or a mixture of the powder and small body is arranged thereon to draw a pattern and heat-treated above the softening point of the small body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a patterned crystallized glass building material used for interior and exterior materials of buildings.

[0002]

2. Description of the Related Art Various types of crystallized glass building materials used as interior and exterior materials for buildings have been proposed.

[0003] For example, the crystallized glass building material disclosed in Japanese Patent Publication No. 55-29018 has a property that when heat-treated at a temperature higher than the softening point, needle-like crystals are precipitated from the surface toward the inside while softening and deforming. It is obtained by accumulating a large number of small glass bodies in a mold and heat-treating them at a temperature higher than the softening point of the glass.When the surface is polished, it exhibits a natural marble pattern, and is colored to the glass composition It has a feature that various colors can be obtained by containing an oxide.

Japanese Patent Publication No. 5-43651 discloses a colored crystallized glass building material produced by accumulating a mixture of the above-mentioned crystalline glass particles and inorganic pigment powder and heat-treating the mixture.

[0005]

With the diversification of architecture in recent years, building materials having various appearances have been developed. In addition, diversification is required for patterns.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of manufacturing a patterned crystallized glass building material capable of freely drawing a desired pattern on the surface, thereby obtaining an appearance different from the conventional crystallized glass building material. It is to provide.

[0007]

The method for producing a patterned crystallized glass building material of the present invention is characterized in that, when heat-treated at a temperature higher than the softening point, needle-like crystals precipitate from the surface toward the inside while softening and deforming. A large number of glass particles having, a step of preparing an inorganic pigment powder, and after accumulating the glass particles in a mold, disposing the inorganic pigment powder or a mixture of the inorganic pigment powder and the glass particles thereon And drawing a pattern, and performing a heat treatment at a temperature higher than the softening point of the glass body.

[0008]

In the method of the present invention, after a large number of crystalline glass particles are accumulated, the inorganic pigment powder or a mixture of the inorganic pigment powder and the glass particles can be manually placed on the crystalline glass particles. It is possible to freely draw complicated patterns such as.

When only the inorganic pigment powder is placed on the surface and heat-treated after the glass particles are accumulated, the surface state tends to be uneven, but the glass particles are mixed with the inorganic pigment powder. When the heat treatment is performed by placing
The surface state tends to be smooth.

[0010] The patterned crystallized glass building material obtained by the method of the present invention comprises a landed portion which is softened and fused to each other by heat treatment of a large number of glass bodies and crystallized. It is formed from a pattern portion made of an inorganic pigment fused and integrated.

The glass body used in the present invention has such a property that when heat-treated at a temperature higher than the softening point, needle-like crystals are precipitated from the surface toward the inside while softening and deforming. SiO ₂ 45~77%,
_{Al 2 O 3 1~25%, CaO} 2~25%, ZnO
0-18%, BaO 0-20%, MgO 0-17
_{%, Na 2 O 1~15%,} K 2 O 0~7%, Li 2
O 0-5%, colored oxides (NiO, MnO ₂ , Cr ₂
O ₃ etc.) having a composition of 0 to 10%, β-wollastonite (β-CaO.SiO ₂ ) and diopside (Ca
O.MgO.2SiO ₂ ) is preferably used because a crystallized glass having excellent mechanical strength and weather resistance can be obtained.

The glass body referred to in the present invention means, for example, a crushed material, a crushed material, a granular material, a powder, a small ball, a small piece, a rod-shaped material, etc. Is used. However, as the glass particles to be mixed with the inorganic pigment powder, it is preferable to use particles or powder having a particle size of 2 mm or less. This is because the smaller the particle size, the easier it is to draw even a fine pattern. Further, as the glass body used for the landing portion, it is possible to use a mixture of a plurality of types of glass bodies having different compositions and color tones.

The glass particles used for the landing portion and the glass particles mixed with the inorganic pigment powder may have the same composition, but if the softening points are almost the same,
The composition may be different.

The inorganic pigments include NiO and MnO.
₂ , a single colored oxide such as CoO, Fe ₂ O ₃ , Cr ₂ O ₃ , or Zn—Cr—Ni—Al spinel, Sn
-Si-Ca-Cr-Zn sphene, Zr-Sr-P
r zircon, Zr-Si-V-Pr zircon, Zr-S
i-V zircon, Al-Co-Cr-Zn spinel, A
1-Zn-Fe-Cr spinel, Fe-Cr-Zn-A
1 spinel, Fe-Cr-Zn spinel, Fe-Cr-
Component-based colored oxides such as Ni-Mn spinel can be used alone or in combination. still,
It goes without saying that the inorganic pigment powder is appropriately selected so as to have a color tone different from the color tone of the landing portion.

In the method of the present invention, after a large number of the above-mentioned glass particles are accumulated in a mold, an inorganic pigment powder or a mixture of the inorganic pigment powder and the glass particles is arranged thereon to form a pattern. Draw.

Subsequently, when heat treatment is performed at a temperature higher than the softening point of the glass body, the glass body precipitates needle-like crystals from the surface to the inside while softening and deforming, and the inorganic pigment is fused and integrated on the surface. A patterned crystallized glass in which a color pattern due to a color difference between the crystallized glass and the inorganic pigment appears.

[0017]

EXAMPLES The method for producing a crystallized glass building material of the present invention will be described below based on examples.

(Example 1) First, in weight%, SiO ₂ 5
9.0%, Al ₂ O ₃ 6.5%, CaO 17.0
%, ZnO 6.6%, BaO 4.1%, Na ₂ O
3.4%, K ₂ O2.3%, and a large number prepared small glass masses (particle size 0.5 to 6 mm) having a composition of B ₂ O ₃ 0.6%. When heat treated at a temperature higher than the softening point (about 800 ° C.), the glass body precipitates as β-wollastonite as a main crystal while softening and deforming, and becomes a white crystallized glass.

This glass body was prepared by mixing a glass raw material mixture prepared to have the above-mentioned composition with 14,000 to 1
After melting at 500 ° C., the molten glass was poured into water, granulated, dried and classified.

Next, after the above glass particles are accumulated in a mullite mold coated with alumina powder, a Zr-Si-V-Pr zircon pigment (having an average particle diameter of 10
μm: green) and Zr—Si—Pr zircon pigment (average particle size: 10 μm: yellow), a picture was drawn by appropriately arranging two kinds of inorganic pigment powders, and heat-treated at 1100 ° C. for 2 hours. The bodies softened and fused to each other and crystallized, and the inorganic pigment and the glass body were fused and integrated to obtain a dense crystallized glass plate without bubbles.

The surface of the crystallized glass plate thus obtained was polished, and the surface was observed. As a result, the appearance in which a pattern caused by the color tone of the inorganic pigment was drawn in a white landing portion was obtained. Was presenting.

Example 2 The same glass particles and inorganic pigment powder as in Example 1 were prepared, and the glass particles were integrated in a mullite mold coated with alumina powder. Next, a picture pattern was drawn by appropriately arranging a mixture of the glass body and the inorganic pigment powder at a predetermined position thereon,
After heat treatment for a period of time, each glass body softened and fused with each other and crystallized, and the inorganic pigment and the glass body were fused and integrated to obtain a dense crystallized glass plate without bubbles.

As the glass particles to be mixed with the inorganic pigment powder, those having a particle size of 2 mm or less are used, and the glass particles and the inorganic pigment powder are mixed so that the weight ratio is 9: 1. did.

The surface of the crystallized glass plate thus obtained was polished, and the surface was observed. As a result, the appearance in which a pattern caused by the color tone of the inorganic pigment was drawn in the white landing portion was obtained. Was presenting. Incidentally, the surface of this pattern was smoother than the surface of the pattern drawn on the crystallized glass plate of Example 1.

[0025]

As described above, according to the method of the present invention, after a glass body is accumulated in a mold, an inorganic pigment is arranged thereon, so that a desired pattern can be freely drawn on the surface. The patterned crystallized glass building material thus obtained can obtain an appearance different from that of the conventional crystallized glass building material, and meets the demand for diversification of building materials.

Claims (1)

[Claims] 1. A step of preparing a large number of glass bodies having a property that needle-like crystals precipitate from the surface toward the inside while being softened and deformed by heat treatment at a temperature higher than the softening point, and an inorganic pigment powder; After accumulating the glass body in a mold, drawing a pattern by arranging the inorganic pigment powder or a mixture of the inorganic pigment powder and the glass body on the glass body, at a temperature higher than the softening point of the glass body. A method for producing a patterned crystallized glass building material, comprising a step of heat treatment.