JPH02212344A - Composition for interior wall - Google Patents

Abstract

PURPOSE:To produce the compsn. for interior walls which obviates the bleeding out of the lye and stains of a backing surface onto a front surface and has good adhesiveness to the backing surface by adding succinoglucan to aggregate, fibers and synthetic glue and kneading the mixture with water. CONSTITUTION:The compsn. for interior walls is prepd. by adding the succinoglucan to the aggregate (slaked lime, shell lime, gypsum, etc.) and/or the fibers (natural fibers, synthetic fibers, etc.) and the synthetic glue (methyl cellulose, CMC, etc.) and kneading the mixture with water. The succinoglucan is a polymer having the main chain consisting of galactose and glucose and having about >=2,000,000mol.wt. and is added to the mixture at 0.2 to 10 pts.wt. per 100 pts.wt. water. The viscosity of the kneaded compsn. is adjusted to 5 to 500 poises. This compsn. is applied on the backing surface of an upper wall or wooden board, etc., and is dried to form the wall, by which the bleeding of the lye and stains from the backing material to the front surface is prevented and the peeling of the compsn. from the backing surface is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is directed to an earthenware system which is formed over a base surface made of earthen walls of buildings or other buildings, various types of wood boards, cement mortar, etc.
The present invention relates to compositions for plasters, plasters, fiber walls, sacristy walls, and other interior walls.

(Prior Art) For indoor walls formed on base surfaces made of earthen walls, wooden boards, etc., compositions such as whitewash and plaster have conventionally been mixed with slaked lime, various aggregates, fibers, etc. It is made up of agents. As the adhesive, natural adhesives such as ginkgo herb and kelp juice, or synthetic adhesives such as MC (methyl cellulose) are used.

In addition, the composition of indoor walls such as fiber walls and seongaku are composed of various aggregates, natural fibers and other materials, and synthetic glues such as CMC (sodium carboxymethyl cellulose).

Then, water is added to each of the above compositions and kneaded,
It is applied to earthen walls, wooden boards, cement mortar, and other underlying surfaces and dried to form indoor walls as described above.

(Problem to be Solved by the Invention) In the above-mentioned conventional composition for indoor walls, if the plaster is used as a plaster, if the F ground is a clay wall or a wooden board, the scum or stains will be removed by the applied composition. Since it is easy to penetrate, there is a problem that it often contaminates the surface of the formed wall. To prevent contamination of this wall, the composition is applied in multiple layers or thickly. Therefore, problems arise, such as a longer construction period and an increased amount of composition used, resulting in higher costs.

When the above-mentioned compositions such as fibrous walls and Seiraku are applied to cement mortar or base material containing a large amount of calcium salt, the stability of CMe deteriorates and changes in quality, resulting in a decrease in adhesive strength and formation. There are problems such as often peeling off when external force is applied to the wall.

In addition, when each of the above-mentioned compositions is kneaded with water, placed in a container, and left for a long period of time, the pigments separate and adhere to the inner surface of the container, causing the respective materials to settle and separate. However, it has the drawback of lacking mechanical stability and storage stability.

Therefore, it is difficult to store the composition as a kneaded product, so it is necessary to knead the composition with water during construction.
This also increases the amount of time and effort required during construction.

The present invention solves the above-mentioned problems,
F. It is possible to prevent stains on the ground from seeping onto the surface of the applied composition, and it also improves adhesion to the underlying surface, making it possible to use a composition for indoor walls that does not cause peeling. This is the purpose.

1. Means for Solving the Problems) The indoor wall composition of the present invention comprises aggregate and/or fiber,
It is composed of a synthetic sizing agent and succinoglucan, and is characterized by being kneaded with water.

Examples of the aggregate include slaked lime, shell ash, gypsum, ore powder, ore grains, unfoamed or foamed rubber, plastics, and powder or granules of foamed bodies. Or use two or more types.

Examples of fibers include natural fibers, synthetic fibers,
Examples include inorganic fibers and pulp, and one or more of these may be used after being cut or crushed.

Examples of the synthetic adhesive include cellulose-based adhesives such as methylcellulose, sodium carboxymethylcellulose, and hydroxyethylcellulose, polyvinyl alcohol, and sodium polyacrylate.

The above-mentioned succinoglucan improves the stability of the adhesion between the kneaded # grade compound and the underlying surface, and also prevents the smudges and grime generated from the substrate material from penetrating the applied composition to the surface. It is a polymer that prevents leaching and has a main chain consisting of galactose and glucose with a molecular weight of about 2 million or more.

The M2C of this succinoglucan is as follows.

If the amount of succinoglucan added is too small, the effect of the addition will be low, and if it is too large, the viscosity will increase, reducing workability during kneading and reducing coating efficiency. Because it occurs, the water 1001! It is suitable that the amount is 0.2 to 10 parts by weight more than Ji part, preferably 0.5 to 8f! It is about the amount of parts.

In addition, if the viscosity of the above-mentioned materials kneaded with water is too low, fluidity will occur and the thickness will tend to be uneven during application, and if it is too high, the viscosity will be too thin when applied to the base surface. 5. Because the performance is low and it affects workability.
Although it is excessive to set the culmability to ~500 poise, it is preferably about 20 to 100 poise.

In this composition for indoor walls, the aqueous solution of succinoglucan maintains its viscosity stably for a long period of time without being affected by pH or high concentration of salts.
The sedimentation amount of each material is #t 1g1, which improves the mechanical stability and storage stability of the kneaded product. Therefore, each composite material is kneaded with water in advance, and the mixture is sealed in a container and stored.
It is also possible to take it out from the container and apply it during construction.

In addition, the aggregate and/or fiber, synthetic sizing agent, and succinoglucan are mixed in advance, and water is added to and kneaded at the construction site before use. It is also possible to mix them at the construction site and knead them with water for use.

In addition to the above-mentioned components, pigments, dispersants, surfactants, resin emulsions, fillers, etc., which are required depending on the type of wall, etc., can be optionally added.

(Function) As mentioned above, this composition for indoor walls is used by kneading each building material with water, and can be applied to earthen walls, wooden boards, cement mortar, or any other base surface using a trowel. etc., and dry to form a wall.

Furthermore, succinoglucan is characterized by its dispersibility, high molecular weight,
The molecular structure prevents stains or stains from the base material from seeping onto the surface of the applied composition, and furthermore, the aqueous solution of succinoglucan has high stability against pH and high concentration of salts. It maintains strong adhesion even to cement mortar and base materials containing a large amount of calcium salt, and prevents the wall from peeling off from the ground.

(Example) Examples of the composition for indoor walls of the present invention will be described with respect to plaster walls.

The composition for plaster walls in this example uses slaked lime and agaric stone as aggregates, methyl cellulose as a synthetic glue, and glass fiber as fibers, to which succinoglucan is added, and kneaded with water. Prepared.

As a comparative example, a composition was prepared in which succinoglucan was removed from the above example.

The blending amount, viscosity, and results of each material in the Examples and Comparative Examples are shown in Table 1 below.

Table 1 "Kneaded product viscosity" in Table 1 above indicates the viscosity of the composition obtained by kneading each of the respective composite materials, and these were measured using a rotating cylinder type viscometer. [Addition ratio of succinoglucan] indicates the number of parts by weight of succinoglucan to 10 parts by weight of water, and "workability of application" is
The workability when each composition was applied to the underlying surface with a trowel was shown. Moreover, "presence of stains and other contamination" refers to the presence or absence of contamination due to stains or grime that oozes out onto the surface of the wall when each of the above-mentioned compositions is applied to the underlying surface. As the methylcellulose, rhi-Metrose 9G3N-150004 manufactured by Shin-Etsu Chemical Co., Ltd. was used.

Each of the compositions obtained by kneading the materials of Example 1.2 and Comparative Example 1.2 shown in Table 1 was
It was applied to a s+, 8x9+n+ multilayer plywood board in one coat with a trowel to a thickness of approximately 1-. Incidentally, the peripheral edge of the plywood board having a width of 2 to 3 m was sloped so that the end portion thereof was thinner.

Table 1 shows the results of examining the workability of applying each composition and the contamination of the wall formed with each composition due to bleeding or staining of the base material after being left for two weeks.

As is clear from Table 1, the plaster walls formed with the composition of Example 1.2 to which succinoglucan was added were not contaminated by smudges or grime. Each of these plaster walls has good workability and is formed in one coat, so the work period can be shortened and there is no need to apply the composition thicker than necessary. Therefore, it is clear that it can also contribute to cost reduction.

However, Comparative Example 1, in which succinoglucan was not added,
Each plaster wall formed with composition No. 2 was contaminated by bleeding and grime from the F base material.

From these results, it is clear that succinoglucan prevents stains and grime from the F base material from penetrating into the wall and contaminating the wall.

Next, examples of the composition for indoor walls of the present invention will be described with reference to Seigaku.

The composition of Seiraku in this example uses colored mountain sand and black natural sand as aggregates, a 5% carboxymethyl cellulose aqueous solution as a synthetic sizing agent, a crush valve as a fiber, and an 8% succinoglucan aqueous solution. ,It was used.

As a comparative example, a composition was prepared by removing the succinoglucan aqueous solution from the above example.

Table 2 shows the blending amount, viscosity, coating results, etc. of each material in the Examples and Comparative Examples.

Table 2 "Mixture viscosity J" in Table 2 above indicates the viscosity of the composition obtained by kneading each component, and these were measured with a rotating cylinder viscometer. "Water J is 5% The amount added is shown excluding the water contained in the carboxymethylcellulose aqueous solution and the 8% succinoglucan aqueous solution.And,
As a 5% carboxymethyl cellulose aqueous solution, Yama 1
``Sunrose F 10MGJ (
(trade name) and [Shell Leflow J (trade name) manufactured by Shell Kagaku II were used as an 8% succinoglucan aqueous solution.

Each of the compositions obtained by kneading the materials of Example 3.4 and Comparative Example 3.4 shown in Table 2 was tested at 25° vertically and horizontally to examine the adhesion to the alkaline base surface after coating. It was applied in one coat with a trowel to a thickness of approximately 1 ms+ when wet to a 18 CIl, 5 inch thick cement board. The Seiraku obtained by leaving it to dry for one week after application was scratched with a plastic spatula to check whether it had peeled off or not. The results are shown in Table 2.

As is clear from the presence or absence of peeling in Table 2, the Seiraku formed in each of Examples 3 and 4 to which succinoglucan was added did not peel at all even when scratched with a plastic spatula. It is clear that strong adhesion is maintained without being affected by the pH of the base material or salts.

However, Comparative Example 3 in which succinoglucan was not added.
The sacred music formed from the composition of 4 is made of plastic.
All peeled off when scratched with a hand.

(Effects of the Invention) As described above, the composition for indoor walls of the present invention is one in which aggregate and/or fiber, synthetic glue, and succinoglucan are kneaded with water, and the aqueous solution of succinoglucan is , P
It is almost unaffected by H and high concentration of salts, and exhibits strong adhesion even to cement mortar and base materials containing a large amount of calcium salt, so M#'s own items can be used as any base material. It is possible to form a wall that is firmly adhered to the surface of the wall and has no risk of peeling.

In addition, when applying the composition to a base material that is likely to cause stains or grime, such as earthen walls, plywood boards, or other wood boards, please be aware that the stains and grime will penetrate into the composition. Sacdinoglucan prevents this with its dispersibility, high molecular weight, and molecular side effects. Therefore, various types of walls can be formed efficiently and at low cost because the composition can be applied in one coat to a base material made of any material without being contaminated with smudges or grime. It is possible that there are scales.

This composition for walls can be used by mixing each material except for water and kneading it with water at the construction site, or by mixing each material at the construction site and kneading it with water. However, since succinoglucan increases the mechanical stability and storage stability of mixed materials, each material is kneaded with water and sealed in a container, and then taken out from the container at the construction site and used. It is also possible to eliminate the need for kneading each material on site.

Patent applicant: Keikagaku Kogyo Co., Ltd.

Claims (3)

[Claims] (1) An interior wall composition composed of aggregate and/or fiber, a synthetic sizing agent, and succinoglucan, and kneaded with water. (2) The indoor wall composition according to claim 1, wherein the amount of succinoglucan added is 0.2 to 10 parts by weight per 100 parts by weight of water. (3) The indoor wall composition according to claim 1 or 2, wherein the viscosity of the kneaded product of each composition is set to 5 to 500 poise.