JP4304201B2 - Interior thin finish coating material having humidity control, manufacturing method thereof, interior thin finish wall material having humidity control and construction method thereof - Google Patents

Description

  The present invention relates to an interior thin finish coating material having a moisture conditioning property having both crack resistance, adhesion strength, water retention, abrasion resistance, resistance to fading, moisture absorption and desorption, and anion generation effect, a method for producing the same, The present invention relates to a wet interior finishing wall material and its construction method.

Conventionally, plaster and earth walls are known as finish coating materials with humidity control, and plaster is kneaded slaked lime and added with susa, glue, straw, water, etc., and the earth wall is clay, sand , Koji, hemp etc. are added and kneaded. Moreover, what added diatomaceous earth is also known.
These have not only humidity control but also fire resistance, heat storage, and deodorization properties, and have been regarded as measures against recent volatile organic compound hypersensitivity and sick house syndrome.

On the other hand, as a method of utilizing Shirasu, which is a natural production deposit, a method has been proposed in which dry Shirasu is combined with white cement or gypsum and mixed with building materials and building finishing coating materials (for example, Patent Document 1).
Japanese Patent No. 3283799

  However, since the diatomaceous earth has recently become a problem of carcinogenicity of crystalline silica, dry shirasu is used as a substitute for this diatomaceous earth, and the dry shirasu has a strong water absorption and uses cement or gypsum. It was difficult to cure other than forced curing by hydration reaction. For example, it is extremely difficult to use lime or re-emulsifiable water-soluble resin by carbon dioxide in the air and air drying and polymerization of the resin as a hardener to make a wall material. Since the slippage is poor and the water-drawing is fast and the curing speed is slow, there has been a general evaluation that dry shirasu is an unsuitable raw material for the method of curing with slaked lime or a re-emulsifying water-soluble resin.

  Therefore, the present invention can solve the above-mentioned problems, and provides a coating material with good health that has crack resistance, adhesion strength, water retention, abrasion resistance, resistance to fading, moisture absorption / release, and negative ion generation effects. The purpose is to provide.

  The present invention has been proposed in view of the above, and contains the shirasu or shirasu balloon and slaked lime or a re-emulsifiable water-soluble resin as a curing agent in a specific composition range, and further combines the above-mentioned object by combining other components. Found that it can be achieved.

That is, the present invention is Shirasu or Shirasu balloon 3-7 wt%, re-emulsifying water-soluble resin 2-10 wt%, inorganic powder 5-40 wt%, aggregate 10-75 wt%, thickener 0.5-10 wt%, An interior thin finish coating material having moisture conditioning, characterized by containing 1 to 3 wt% of organic fibers, and each of the above components, which are prepared and stirred, The present invention relates to a method for producing an interior thin finish coating material having humidity control characteristics .

In addition, the present invention includes shirasu or shirasu balloon 5-20 wt%, slaked lime 5-30 wt%, inorganic powder 5-40 wt%, aggregate 10-60 wt%, thickener 0.5-7 wt%, organic fiber 1 An interior thin finish coating material having humidity control, characterized by containing 3 wt%, and each of the above components, which are prepared in a dry state, stirred, and manufactured We also propose a method for manufacturing the interior thin finish coating material with the characteristic humidity control .

  Furthermore, the present invention is characterized in that water is added to the interior thin finish coating material of the above composition ratio, kneaded, applied on the base, and subjected to surface finishing by various designs on the construction site and dried. We also propose a thin interior wall material that has humidity control.

  Further, the present invention is characterized in that water is added to the interior thin finish coating material having the above composition ratio, kneaded, applied onto the base, and subjected to surface finish processing by various designs at the construction site and dried. We also propose a method of constructing interior wall finish walls with humidity control.

The interior thin finish coating material having humidity control properties of the present invention has cracking resistance, adhesion strength, water retention, abrasion resistance, resistance to fading, moisture absorption and desorption, and negative ion generation effects, and is in accordance with JIS A 6909. Satisfies the humidity control ability of 70 g or more as defined, and the performance of finish coating materials for buildings.
The measured values are shown in Tables 3 and 4 below.

  In addition, the interior thin finish wall material having humidity control of the present invention can be easily constructed by adding a specified amount of fresh water and kneading, and using a normal plastering method.

  Each material used for this invention is demonstrated below.

[Shirasu]
Shirasu (white sand) means white sand in the dialect of Minami Kyushu, but geologically, white volcanic ejecta (fine pumice stones) that are thickly deposited in the southern Kyushu area, including Kagoshima Prefecture. Or volcanic ash). It is estimated that most of the Shirasu was formed by the Ito pyroclastic flow generated during the great eruption of the Aira caldera that occurred about 25,000 years ago. The volume of pyroclastic flow erupted about twice as large as the current volume of Akagiyama (about 100 km ³ ) (200 km ³ ), and in addition, about 150 km ^{3 of} volcanic ash fell all over Japan (wide area tephra Aira Tn). Aira caldera is a depression (diameter about 20km) corresponding to the back of Kagoshima Bay on the north side of Sakurajima. The magma ejected at this time has a lot of silicon dioxide and looks whitish, so it is called shirasu (white sand). In southern Kyushu, volcanic products called Shirasu are widely distributed, forming plateaus or hills. The Shirasu is said to have been erupted from the back of Kagoshima Bay and from the Aira and Ata volcanoes at the mouth of the end of the 3rd to 4th era. Pumice flow (fired part) fall pumice and their secondary sediments ( Narrowly defined Shirasu). Since they are generally white sandy deposits, they have long been called white sand or white sand and are now called Shirasu. In general, eruption products (glassy volcanic ash) are now called "Shirasu" in the Kyushu region. Shirasu is a completely inorganic powdery substance that is naturally calcined at a temperature exceeding 1000 ° C., and it is thought that the reserves in South Kyushu alone are 90 km ³ . As shown in Table 1 below, the components include 70% silicic acid, 14% alumina, 3% calcium, 3% sodium, 2% magnetic iron, 2% potassium, other magnesium, titanium, manganese and the like.

[Shirasu Balloon]
Shirasu is baked and foamed at high temperature. When volcanic glass in the shirasu is selected, dried and heat-treated at high temperature, the volcanic glass particles are fired into fine hollow foam particles. An example of the components is shown in Table 2 below.

These shirasu or shirasu balloons are desirably blended in an amount of 3 to 7 wt% in the interior thin finish coating material of the present invention using a re-emulsifying water-soluble resin as a curing agent. If it is 3 wt% or less, the generation of negative ions and the humidity control function are low, and if it is 7 wt% or more, the finished surface strength becomes weak.
In addition, in the interior thin finish coating material of the present invention using slaked lime as a curing agent, it is desirable that 5-20 wt% of shirasu or shirasu balloon is blended. If it is 5 wt% or less, functions such as humidity control and generation of negative ions are deteriorated, and if it is 20 wt% or more, the surface strength is weakened.

As a reference, silica fume will be described. Since it is a high-purity SiO ₂ amorphous spherical fine particle and does not have water absorption, how to use slaked lime or a re-emulsifying water-soluble resin as a hardener. Even if the composition ratio is high, no problem occurs. Therefore, this silica fume has already been used for many products and proposals.

[Re-emulsifying water-soluble resin]
Re-emulsification type water-soluble resins such as vinyl acetate = veova, ethylene vinyl acetate, and acrylic resin are soluble in water and in powder form, and therefore can be mixed in advance in a dry state.
In the interior thin finish coating material of the present invention using this re-emulsification type water-soluble resin as a curing agent, the re-emulsification type water-soluble resin is desirably blended in an amount of 2 to 10 wt%. If it is 2 wt% or less, the adhesion performance is not improved, and it takes time to cure. When it becomes 10 wt% or more, the adhesion performance is improved, but the moisture permeability is lowered.

[Slaked lime]
Limestone is made of sediments of organisms with shells and skeletons of CaCO ₃ such as foraminifera, corals, bivalves, snails, lime algae, etc. When heated in a furnace, limestone emits carbon dioxide CO ₂ . It becomes calcium oxide (quick lime) CaO. When water is added to quicklime, heat is generated and calcium hydroxide (slaked lime) Ca (OH) ₂ is obtained.
Further, in the interior thin finish coating material of the present invention using this slaked lime as a curing agent, it is desirable that 5-30 wt% of slaked lime is blended. If it is 5 wt% or less, the surface strength is weak, and if it is 30 wt% or more, the humidity adjusting function is lowered.

The interior thin finish coating material using the re-emulsification type water-soluble resin of the present invention as a curing agent is based on the ratio of the silica or silica balloon and the re-emulsification type water-soluble resin, and other components described later. The proportion was examined and identified.
In addition, the interior thin finish coating material using the slaked lime of the present invention as a curing agent was also examined and specified based on the ratio of silica or silica balloon and slaked lime as described above.

[Inorganic powder]
As the inorganic powder, various inorganic powders used for known finishing coating materials having a particle diameter of about 100 μm or less can be used. For example, dolomite plaster, calcium carbonate powder, clay, or the like may be used.
Even in the interior thin finish coating material of the present invention using a re-emulsification type water-soluble resin as a curing agent, and in the interior thin finish coating material of the present invention using slaked lime as a curing agent, this inorganic powder is 5 to 40 wt%. 10 to 30 wt% is preferable, and it may be determined in consideration of workability, surface strength, and humidity control properties.

〔aggregate〕
As the aggregate, various aggregates used in known finish coating materials having a particle size of about 1.2 mm or less can be used. For example, zeolite, calcium carbonate, or the like may be used.
In the interior thin finish coating material of the present invention using a re-emulsification type water-soluble resin as a curing agent, the aggregate is desirably blended in an amount of 10 to 75 wt%. If it is 10 wt% or less, the function of adsorbing odor, humidity control performance, and surface finish workability by various designs are bad, and if it is 75 wt% or more, workability is bad.
In the interior thin finish coating material of the present invention using slaked lime as a curing agent, the aggregate is desirably blended in an amount of 10 to 60 wt%. If it is 10 wt% or less, the function of adsorbing odor, humidity control performance, and surface finish workability by various designs are bad, and if it is 60 wt% or more, workability is bad.

[Thickener]
As the thickener, various thickeners used in known finish coating materials can be used. For example, one or more kinds selected from synthetic polymer such as methylcellulose and carboxymethylcellulose or natural polymer such as seaweed. Water-soluble thickeners can be used. This water-soluble thickener has the effect of improving the troweling workability, and many improve the adhesiveness. Moreover, you may make it use the natural organic substance obtained from the plant etc. rather than the synthetic organic material.
In selecting this water-soluble thickener, avoid those that affect the setting of slaked lime, considering the workability at the time of construction, the finished state, by selecting one or more types as appropriate, Flowability and viscosity can be arbitrarily controlled.
In the interior thin finish coating material of the present invention using a re-emulsifying water-soluble resin as a curing agent, it is desirable that 0.5 to 10 wt% of this thickener is blended. If it is 0.5 wt% or less, sufficient viscosity cannot be obtained, surface finishing workability by various designs is poor, and water retention performance is also poor. When it becomes 10 wt% or more, workability, finishing accuracy, and drying after construction deteriorate.
In the interior thin finish coating material of the present invention using slaked lime as a curing agent, it is desirable that this thickener is blended in an amount of 0.5 to 7 wt%. If it is 0.5 wt% or less, sufficient viscosity cannot be obtained, surface finishing workability by various designs is poor, and water retention performance is also poor. When it becomes 7 wt% or more, workability, finishing accuracy, and drying after construction also deteriorate.

[Organic fiber]
The organic fibers are added for improving the viscosity, and various organic fibers used in known finish coating materials can be used.
Even in the interior thin finish coating material of the present invention using a re-emulsification type water-soluble resin as a curing agent, and in the interior thin finish coating material of the present invention using slaked lime as a curing agent, this organic fiber is blended in an amount of 1 to 3 wt%. It is desirable that If it is 1 wt% or less, the water retention performance is inferior, and if it is 3 wt% or more, the surface condition is bad, and the surface finish workability by various designs is bad.

[Pigment]
As the pigment, various pigments used in known finish coating materials can be used.
In the interior thin finish coating material of the present invention using a re-emulsification type water-soluble resin as a curing agent, and in the interior thin finish coating material of the present invention using slaked lime as a curing agent, this pigment is appropriately blended at 2 wt% or less. Desirably, workability deteriorates when 2 wt% or more is added. Moreover, the designability is improved by adding various colors.

[Wallacea]
As the wallacesa, various kinds of wallacesa used in known finish coating materials can be used.
Even in the interior thin finish coating material of the present invention using a re-emulsification type water-soluble resin as a curing agent, and in the interior thin finish coating material of the present invention using slaked lime as a curing agent, this wallacesa is appropriately blended at 2 wt% or less. Desirably, workability deteriorates when 2 wt% or more is added. The width of the texture can be widened, and the addition of a wallacet has the effect of preventing cracks.

[Others]
In order to improve workability, a workability improving material or natural calcium borate (colemanite) may be used in combination to impart antifungal performance. Further, a VOC adsorbent may be mixed and used in combination in order to adsorb and fix the VOC.
Moreover, you may use water-soluble resins other than the re-emulsification type used as a hardening | curing agent as a water retention agent, or as an adhesion aid. The water-soluble resin other than the re-emulsifying type is desirably blended in an amount of 0.1 to 5 wt% in the interior thin finish coating material using slaked lime as a curing agent. If it is less than 0.1 wt%, it is difficult to maintain the water retention performance, and if it exceeds 5 wt%, the moisture permeability performance is lowered.
As water-soluble resins used as these water retention agents or adhesion aids, synthetic polymer materials such as methyl cellulose, carboxymethyl cellulose, and polyvinyl alcohol, or natural polymer materials such as starches and seaweeds are used.

  The interior thin finish coating material of the present invention can be made into a wall material using slaked lime or a re-emulsifiable water-soluble resin as a curing agent by containing each of the above materials in the specific composition range. It can also be applied to a texture that smoothes the painted wall.

And the interior thin finish coating material using the re-emulsification type water-soluble resin of the present invention as a curing agent is Shirasu or Shirasu balloon 3-7 wt%, re-emulsification type water-soluble resin 2-10 wt%, inorganic powder as described above 5 to 40 wt% body, 10 to 75 wt% aggregate, 0.5 to 10 wt% thickener, 1 to 3 wt% organic fiber, these dried ones were prepared and stirred, To manufacture.
When it is out of the above range, it is difficult to obtain a wall material. Particularly, a texture that smoothes the coated wall surface has poor iron slip, quick watering, and slow curing speed.
More preferably, Shirasu or Shirasu balloon 3 to 5 wt%, re-emulsifying water-soluble resin 2 to 3 wt%, inorganic powder 18 to 22 wt%, aggregate 68 to 72 wt%, thickener 0.5 to 2 wt%, organic fiber 2 to 3 wt%.
More preferably, Shirasu balloon 3.5-4.5 wt%, re-emulsifying water-soluble resin 2.3-2.7 wt%, inorganic powder 19-21 wt%, aggregate 69-71 wt%, thickener 0.8 -1.2 wt% and organic fiber 2.3-2.7 wt%.

Moreover, the interior thin finish coating material using the slaked lime of the present invention as a curing agent is Shirasu or Shirasu balloon 5-20 wt%, slaked lime 5-30 wt%, inorganic powder 5-40 wt%, aggregate 10 It contains 60 wt%, thickener 0.5-7 wt%, and organic fiber 1-3 wt%, and those in a dry state are prepared, stirred, and manufactured.
When it is out of the above range, it becomes difficult to obtain a wall material, and particularly the texture that smoothes the coated wall surface has poor iron slip, fast watering, and slow curing speed.
More preferably, Shirasu or Shirasu balloon 6 to 10 wt%, slaked lime 25 to 30 wt%, inorganic powder 20 to 25 wt%, aggregate 29 to 34 wt%, thickener 4 to 6.5 wt%, organic fiber 1 to 2 wt% is there.
More preferably, Shirasu or Shirasu balloon 8 to 9.5 wt%, slaked lime 27 to 29 wt%, inorganic powder 22 to 24 wt%, aggregate 30 to 33 wt%, thickener 5 to 6 wt%, organic fiber 1.2 to 1 0.7 wt%.

The interior thin finish coating material having the tempering properties of the present invention has been described as satisfying the performance of JIS A 6909 finish finish coating material. The performance of JIS A 6909 finish finish coating material is as follows. It is as Table 3. In addition, Table 4 shows the measurement results of the negative ion generation amount.

  In the composition ratios shown in Tables 8 and 9, the interior thin finish coating materials of Examples A and B and Comparative Examples 1 to 10 were prepared, and the workability, surface strength, and moisture were tested and evaluated as follows. did.

〔Workability〕
The workability confirmation method is whether or not surface finish processing by various designs is possible by adding water to the interior thin finish coating material having humidity control of the present invention, kneading and coating on the base, Check the viscosity of the hour and how the trowel is broken. It also affects the water and moisture of the material.
The evaluation index is shown in Table 5 below.

[Surface strength]
As a method for confirming the surface strength, an impact resistance test and an abrasion resistance test according to JIS A 6909 are performed and determined. The evaluation index is shown in Table 6 below.

[Water glutinous]
As a method for confirming the moisture, water is added to the interior thin finish coating material having humidity control according to the present invention, kneaded, applied on the base, and retains moisture for a period of time during which surface finishing can be performed by various designs. Can you? When constructing a wall with a large area, make sure that the water is drawn too quickly to be chased by the work. The evaluation index is shown in Table 7 below.

[Composition ratio and test results]

[Discussion]
From Tables 8 and 9, in Examples A and B that satisfy the specific composition range of the present invention, satisfactory results were obtained in any of the tests of workability, surface strength, and water. On the other hand, even if the constituent raw materials themselves are the same, in Comparative Examples 1 to 10 in which some components deviate from the specific composition range of the present invention, the results are unsatisfactory in any of workability, surface strength, and water content. It became.
Although not described in Tables 8 and 9, Examples A and B in the same table showed the performance of Table 3 and confirmed that the negative ion generation action of Table 4 was provided.

[Example 1]
July 2006 Katsuyama, Maniwa City, Okayama Prefecture, wooden, single-family, 1st floor living room 66m ² is a thin finish coating material that uses shirasu and re-emulsifiable water-soluble resin as a curing agent. Water was added to the composition of Example A shown in FIG. 5 and kneaded to construct an interior thin finish wall material having a thickness of 1 to 2 mm.
The interior thin finish wall material has good workability and 3 months have passed since construction, but the humidity is stable (with humidity control function) and the odor does not remain in the room, making it a better living environment than before. It was. Moreover, neither cracking nor peeling occurred.

[Example 2]
August 2006 Yokodai, Yokohama-shi Yokodai, RC, 10 stories, apartment house, Western-style room 30m ² is a thin finish coating material that uses shirasu and re-emulsified water-soluble resin as a curing agent. Water was added to the composition of Example A shown in FIG. 5 and kneaded to construct an interior thin finish wall material having a thickness of 1 to 2 mm.
The interior thin finish wall material has good workability, 2 months have passed since construction, but the humidity is stable (with humidity control function) and the odor is less likely to remain in the room, which is evaluated as a better living environment than before. It was. Moreover, neither cracking nor peeling occurred.

[Example 3]
September 2006 Yubara, Maniwa-shi, Okayama Prefecture, 5-story Japanese-style room 132m ² in Shirasu and lime as a hardener. Water was added to the composition and kneaded to construct an interior thin finish wall material having a thickness of 1 to 3 mm.
The interior thin finish wall material has good workability and 1 month has passed since construction, but the humidity was stable and it was evaluated as a comfortable environment. Moreover, neither cracking nor peeling occurred.

[Example 4]
September 2006 Yubara, Maniwa City, Okayama Prefecture, RC, 5 stories, Japanese style room 20m ² of shirasu and slaked lime as a hardener. Water was added to the composition and kneaded to construct an interior thin finish wall material having a thickness of 1 to 3 mm.
The interior thin finish wall material has good workability and 1 month has passed since construction, but the humidity was stable and it was evaluated as a comfortable environment. Moreover, neither cracking nor peeling occurred.

Claims (8)

  Shirasu or Shirasu balloon 3-7 wt%, re-emulsifying water-soluble resin 2-10 wt%, inorganic powder 5-40 wt%, aggregate 10-75 wt%, thickener 0.5-10 wt%, organic fiber 1-3 wt% An interior thin finish coating material having humidity control, characterized by containing   Shirasu or Shirasu balloon 5 to 20 wt%, slaked lime 5 to 30 wt%, inorganic powder 5 to 40 wt%, aggregate 10 to 60 wt%, thickener 0.5 to 7 wt%, organic fiber 1 to 3 wt% An interior thin finish coating material with a humidity control characteristic. Shirasu or Shirasu balloon 3-7 wt%, re-emulsifying water-soluble resin 2-10 wt%, inorganic powder 5-40 wt%, aggregate 10-75 wt%, thickener 0.5-10 wt%, organic fiber 1-3 wt% A method for producing an interior thin finish coating material having humidity control, characterized in that the composition in a dry state is prepared, stirred, and produced . Shirasu or Shirasu balloon 5 to 20 wt%, slaked lime 5-30 wt%, the inorganic powder 5 to 40 wt%, aggregate 10 to 60 wt%, thickening agent 0.5~7wt%, those containing organic fibers 1 to 3 wt% A method for producing an interior thin finish coating material having humidity control, characterized in that these dried ones are prepared, stirred, and produced .   Shirasu or Shirasu balloon 3-7 wt%, re-emulsifying water-soluble resin 2-10 wt%, inorganic powder 5-40 wt%, aggregate 10-75 wt%, thickener 0.5-10 wt%, organic fiber 1-3 wt% The interior has a moisture-conditioning property, characterized by adding water to the interior finish finish coating material containing 50%, kneading, applying onto the base, and applying surface finishing by various designs and drying at the construction site. Thin finish wall material.   Shirasu or Shirasu balloon 5 to 20 wt%, slaked lime 5 to 30 wt%, inorganic powder 5 to 40 wt%, aggregate 10 to 60 wt%, thickener 0.5 to 7 wt%, organic fiber 1 to 3 wt% Thinly-finished interior finish wall material with moisture conditioning, characterized by adding water to the finish finish coating material, kneading it, applying it on the base, applying surface finishing by various designs and drying it at the construction site .   Shirasu or Shirasu balloon 3-7 wt%, re-emulsifying water-soluble resin 2-10 wt%, inorganic powder 5-40 wt%, aggregate 10-75 wt%, thickener 0.5-10 wt%, organic fiber 1-3 wt% % Finish finish coating with water, kneaded, coated on the base, and surface-finished by various designs and dried at the construction site. Wall material construction method.   Shirasu or Shirasu balloon 5 to 20 wt%, slaked lime 5 to 30 wt%, inorganic powder 5 to 40 wt%, aggregate 10 to 60 wt%, thickener 0.5 to 7 wt%, organic fiber 1 to 3 wt% Humidity-adjusting interior thinning, characterized by adding water to the finish coating material, kneading it, applying it on the base, applying surface finish processing by various designs and drying it at the construction site Finishing wall material construction method.