JPS6257468A - Wall material composition and production thereof - Google Patents

Abstract

PURPOSE:To obtain a wall material composition having excellent longterm storage stability and high production efficiency and giving a Japanese-style finished all surface, by adding an alkaline substance to a wall material composed of granular aggregate, a colored clay, short fibers and cellulose glycolic acid sodium salt, thereby adjusting the pH of the wall material to a specific level. CONSTITUTION:(A) A mixture of granular aggregate and colored clay is neutralized with (B) an aqueous solution of an alkaline substance and the product is mixed and granulated with (C) cellulose glycolic acid sodium salt and (D) short fibers to obtain the objective wall material having a pH of 6-11.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a wall material composition capable of forming a wall finish with a Japanese-style feel and a method for producing the same.
It is useful as a plastering material.

Conventional technology The main components are granular aggregates such as sand, crushed stone, glass beads, wood flour, synthetic resin, and rubber, natural or artificial colored soil, and short fibers such as suzuka and finely pulverized pulp, and these are used as adhesive components. Wall materials formulated with cellulose sodium glycolate alone or in combination with other adhesives tend to separate easily due to the large difference in specific gravity of the base materials, and also prevent short fibers from intertwining with each other, resulting in a weedy shape. As a result, it is difficult to mix uniformly, so a method has been considered in which these components are integrally granulated in advance to improve dispersibility during kneading with water (Japanese Patent Publication No. 48-42941). When made into an integrated granule, colored soil and cellulose glycol are not suitable for long-term storage due to the problem of a significant decrease in viscosity when the cellulose sodium glycolate comes into contact with colored soil. A manufacturing method has been proposed in which the acid soda is separated, each granule is made, and both granules are mixed. (Japanese Patent Publication No. 49-15465) Problems to be Solved by the Invention Colored soil and cellulose sodium glycolate are separated, and granular aggregate and granulated material mainly composed of colored soil, granular aggregate and cellulose glycol are produced. In wall materials manufactured by separately making granules mainly made of acid soda and then uniformly mixing both granules, the deterioration of cellulose sodium glycolate becomes noticeable if the storage period reaches several months or more. In addition, if the production was to be carried out continuously, it would be necessary to install granulators in parallel or divide the process into two lines, requiring a large amount of equipment. It required a lot of money and labor costs.

Means for Solving the Problems In view of the above circumstances, the inventors of the present invention have repeatedly conducted various tests, and as a result, they have developed an adhesive composition whose main components are granular aggregate, colored soil, and short fibers, and whose main component is cellulose sodium glycolate. When these base materials are mixed in contact with each other in wall materials, the viscosity of cellulose sodium glycolate decreases due to trace amounts of acidic substances contained in the cellulose sodium glycolate and colored soil. reacts, and a part of it changes to cellulose glycolic acid, which reacts with divalent or higher metal ions such as magnesium, calcium, zinc, iron, aluminum, chromium, and manganese contained in colored soil during mixing with water. , discovered the fact that cellulose sodium glycolate gels due to cross-linking within or between the molecules of cellulose sodium glycolate, and in order to prevent this adverse effect, granular aggregate, colored soil, etc. By adding an alkaline substance to a wall material whose main component is short fibers and cellulose glycolate as its main adhesive component and adjusting the pH value of the wall material dissolved in water to be within the range of 6 to 11. It was discovered that even when cellulose sodium glycolate and colored soil are brought into direct contact, the viscosity of cellulose sodium glycolate is only slightly changed, and scales can be obtained by integrally granulating these base materials.

In addition, when forming granules in which colored soil, alkaline substances, short fibers, and cellulose sodium glycolate are coated on the surface of granular aggregate, changes in the viscosity of the wall material over time are further reduced and its storage stability is improved. As a result of considering ways to further increase the granular aggregate and colored soil, we added an aqueous solution of an alkaline substance to the mixture of granular aggregate and colored soil to neutralize it. By mixing cellulose sodium glycolate and other base materials and granulating the mixture, a wall material composition that can be stored stably over a long period of time has been created.

The granular aggregate suitable for carrying out the present invention is 10 to 80 mesh;
Preferably, the particle size is 20 to 48 mesh, typical examples of which include sand, natural or artificial sand such as analite, perlite, vermiculite, crushed stone, wood powder, glass beads, synthetic resin, natural rubber, Colored clay is made of natural or artificial materials to which dispersants such as bentonite and coloring agents such as pigments and dyes are added as necessary.Short fibers include coarse fibers, finely pulverized pulp, and Various fibers cut into lengths of several mm can be used.

Typical alkaline substances used in the present invention include sodium hydroxide, potassium hydroxide, aqueous ammonia, sodium carbonate, acidic sodium carbonate, potassium carbonate, ammonium carbonate, sodium phosphorus monoate, etc.
The amount used is carbonic acid, organic carboxylic acid, sulfurous acid, nitrous acid,
PH3.8 containing trace amounts of acidic substances such as phosphoric acid, hydrochloric acid, sulfuric acid, etc.
~6. neutralizes the colored soil and acidic granular aggregate, and the pH of the wall material composition is 6 to 11, preferably P118 to 10.
If the amount of alkaline substances added to the wall material is excessive, it will cause scum and stains on the painted wall finish surface, so the mixing operation of the alkaline substances must be done properly. No.

As the adhesive component in the present invention, in addition to using cellulose sodium glycolate alone, methyl cellulose,
Hydroxyethyl cellulose, polyvinyl alcohol,
Water-soluble glues such as sodium alginate, sodium polyacrylate, and starch can be used together, and these water-soluble glues can be stored in the same way as cellulose sodium glycolate by adding an alkaline substance to the wall material composition. Also, it is recognized that it has the effect of suppressing a decrease in the viscosity of the paste and increasing its solubility during kneading with water.

According to the present invention, since an alkaline substance is added to the wall material composition, each of the acidic substances contained in the colored soil and, in some cases, the granular aggregate is neutralized and no amount is added to the cellulose sodium glycolate. The colored soil and, in some cases, the granular aggregate contain divalent or higher metal ions that react with alkaline substances and turn into insoluble hydroxides.
As a result, cellulose sodium glycolate does not participate in gelatinization at all, so even if the wall material components are mixed in contact with each other and kneaded with water, no chemical change in cellulose sodium glycolate will occur. This product can be stored stably for a long period of time, dissolves quickly when mixed with water, and provides a viscous slurry suitable for troweling.

EXAMPLES The present invention will be specifically explained below with reference to Examples.

Note that the numerical units in these tests are expressed in weight, unless otherwise specified.

Example 1 Acidity (P) of various naturally produced colored soils and acidic granular aggregates
H) and an aqueous sodium carbonate solution.
When the amount of sodium carbonate required was measured, the results were as shown in Table 1.

From this result, since colored soil is granular and porous, the acidic substances in colored soil cannot be completely neutralized by neutralization in a short time when treated at room temperature, so the amount of alkaline substances added is It was recognized that the amount measured by boiling neutralization should be used as a standard, and a similar phenomenon was observed for granular aggregates such as river sand.

Example 2 785 parts of river sand (average particle size: 30 mesh) and natural ±150 parts
(PH 4,5) and 15 parts of pigment were uniformly mixed together, 50 parts of a 2% aqueous solution of sodium carbonate was added thereto, and kneaded uniformly. When 35 parts of a pulverizing bulb was added and stirring was continued, granules with other base materials spread on the surface of the sand were produced.This was dried at a temperature of about 80°C for 3 hours, and other base materials were spread on the surface of the sand. A wall material consisting of a granule integrally coated with a base material was obtained.

The pH value of the thus prepared granular wall material composition dissolved in water is 9.0, and when the wall material composition is added to a container containing 800 parts of water, the granules disintegrate immediately. This caused a viscous slurry in which each base material was evenly dispersed with just a light kneading, and when this was applied to the wall with a trowel, workability such as elongation and separation with the trowel was extremely good, and the wall was dry. The finished surface was able to express the beautiful uneven satin pattern unique to Juraku walls, with no short fiber pilling at all.

Example 3 In Example 2, instead of the sodium carbonate aqueous solution,
Wall material A was manufactured by adding granules containing each base material to the surface of sand made by adding water that did not contain sodium carbonate and performing the same treatment, and adding 600 parts of sand to water. Wet it and add 150 parts of natural material, 15 parts of pigment, 5 parts of methyl cellulose.
and 35 parts of finely pulverized pulp were added and mixed and granulated to form a dry granule, and 185 parts of sand was moistened with water and 14.5 parts of cellulose sodium glycolate was added thereto and mixed. and granulated to form dry granules, wall material B was prepared by blending both of these granules, wall material C was prepared by adding the alkaline substance produced in Example 2, and polyethylene was used. The samples were sealed in a bag and left in a constant temperature bath maintained at a temperature of 60° C. for 20 days, and the change in viscosity was measured. The results are shown in Table 2.

Example 4 3500 parts of river sand (average particle size 30 mesh) and 2000 parts of natural colored soil (PH4") were mixed uniformly, 300 parts of a 2% aqueous solution of potassium hydroxide was added thereto, and mixing was continued.
Furthermore, when 100 parts of cellulose sodium glycolate, 30 parts of methylcellulose, 20 parts of sodium polyacrylate, and 600 parts of natural fiber with a fiber length of 1 mm were added and mixed with stirring, other base materials were spread on the surface of the sand. A granular material was produced, which was dried at a temperature of about 80° C. for 3 hours to obtain a wall material consisting of a granule in which another base material was integrally adhered to the surface of the sand.

The pH of Honjima dissolved in water was 8, and the thermal stability was measured in the same manner as in Example 3, and the viscosity decreased by only 1.5% after being left at 60°C for 20 days. When the above-mentioned wall material composition was put into a container containing water, a viscous slurry in which each base material was uniformly dispersed was produced by just kneading it lightly, and when this was applied to the wall surface with a trowel, the workability was good. A beautiful wall finish similar to that of the previous example could be formed.

Example 5 565 parts of perlite and 235 parts of colored clay (PH5,0) were mixed uniformly, 30 parts of 5% ammonia water was added and mixed, and then 150 parts of glass fiber with an average fiber length of 1.5 mm was added. A preliminary mixture of 15 parts of cellulose sodium glycolate, 5 parts of hydroxyethyl cellulose, and 3 parts of Kakumata was added and mixed with stirring to produce granules in which other base materials were spread on the surface of pearlite. was formed and dried to produce a wall material made of granules.

The pH of the wall material made in this way was 9.5, and when the thermal stability was measured in the same manner as in Example 3, it was found to be 60.
The viscosity decrease after being left at ℃ for 20 days was 2.8%,
When the above wall material composition is added to a container containing 700 parts of water, it becomes a slurry with a trowelable viscosity in which each base material is uniformly dispersed, and when dissolved in 900 parts of water, it becomes a slurry that can be spray painted. By troweling and spray painting, we were able to finish the wall in an uneven satin pattern with the atmosphere of the east wall.

Example 6 460 parts of wood flour (average particle size: 20 mesh) and 40 parts of natural clay
Mix uniformly colored clay (PH5, 0) with 50 parts of pigment added to 0 parts, add 100 parts of water in which 10 parts of acidic sodium carbonate is dissolved, continue mixing, and further add 20 parts of cellulose sodium glycolate. Add 50 parts of finely pulverized pulp and mix with stirring to form granules with other base materials spread on the surface of the wood flour, and dry this so that the other base materials are integrated on the surface of the wood flour. A wall material was made of granules adhered to.

Pl+ of Honjima dissolved in water was 8, and the viscosity decrease measured in the same manner as in Example 3 at 60° C. for 20 days was 3.0%.

When the wall material composition is poured into water, it quickly disperses, and when lightly stirred, it forms a viscous slurry in which the base material is uniformly dispersed,
When this was applied to a wall with a trowel, the workability was good, and the finished wall surface exhibited a beautiful uneven satin pattern without any discoloration due to the alkali of the wood powder.

Effects of the Invention The present invention provides cellulose by adding an alkaline substance when blending cellulose sodium glycolate into a base material consisting of granular aggregate, colored soil, short fibers, etc. Since sodium glycolate can be kept stable for a long period of time, the wall material composition can be made into an integral granule with good dispersibility of the base material during mixing with water, and is stable for a long period of time. Can be stored.

Further, according to the present invention, each base material can be integrally attached to the surface of the granular aggregate in a state containing cellulose sodium glycolate, so the granular wall material composition has a high bonding strength and is easy to store and store. It is possible to completely avoid the trouble of disintegration during handling such as transportation, and compared to the conventional manufacturing method in which colored clay and water-soluble glue are individually granulated and mixed, the process is simplified and the production efficiency procedure amendment document is improved. (Voluntary) October 14, 1985

Claims (3)

[Claims] (1) When an alkaline substance is added to a wall material whose main components are granular aggregate, colored soil, and short fibers and whose main adhesive component is cellulose sodium glycolate, the pH value of the solution in water is within the range of 6 to 11. A wall material composition characterized by being adjusted as follows. (2) The wall material composition according to claim (1), which is formed as a granule in which colored soil, an alkaline substance, short fibers, and cellulose sodium glycolate are coated on the surface of granular aggregate. (3) Adding an aqueous solution of an alkaline substance to the mixture of granular aggregate and colored soil to neutralize it, and adding cellulose sodium glycolate and short fibers to the mixture mainly consisting of the alkali-neutralized granular aggregate and colored soil. A method for producing a wall material composition, comprising the steps of mixing and granulating.