JPH10251052A - Calcium silicate formed body and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a calcium silicate formed body free from the deterioration of each effect of functional materials having fragrance, deodorizing, anti-bacterial, insect proofing action and the like even in the case of freely working such as cutting or grinding and capable of maintaining the effects over a long period. SOLUTION: One or more kinds of microcapsules 2, in which the functional material having at least one action selected from fragrance action, deodorizing action, antibacterial action and the insect proofing action are encapsulated, are dispersed in the calcium silicate formed body 1 obtained by forming and drying a calcium silicate hydrated slurry prepared by mixing a mixture containing a calcareous raw material and a siliceous raw material with water and hydraulically reacting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an interior material, an exterior material,
The present invention relates to a calcium silicate molded article that can be widely used as a material for industrial materials and stationery.

[0002]

2. Description of the Related Art As is well known, recent advances in housing structures, such as the spread of heating and the improvement in the hermeticity of houses, have various adverse effects on human health. It has developed into a social problem of increasing the damage of insects such as molds and mites on houses and buildings, and as a result, interior and exterior that can provide indoor comfort and provide a healthier indoor environment Demand for materials is growing.

To meet the above demand, Japanese Patent Laid-Open Publication No.
No. 182705, a decorative material is provided on the surface of a base material, and a coating containing a fragrance of a functional substance microencapsulated is applied to the decorative material to form a coating film. A fragrance sustained release composite material that gradually diffuses fragrance is disclosed. In addition, Japanese Utility Model Publication No. 3-45472 discloses that
A building board is disclosed in which a building substrate is impregnated with a deodorant and a volatilization preventing sheet is attached to a surface except for a surface on the indoor side.

[0004]

However, since the fragrance sustained-release composite material contains an fragrance only in the coating film, if the composite material is cut or ground, the cut surface or the cut surface may be damaged. There is a problem that a portion containing no fragrance appears on the ground surface, and there is a problem that diffusion of fragrance is halved. Particularly, when an antibacterial agent or an insect repellent is used in place of the fragrance in the composite material, the cut surface In addition, since the antibacterial agent does not exist on the ground surface, there is a problem that it is not useful for preventing bacteria and ticks that propagate in the gap between the composite materials and the back surface. In addition, since the building board is entirely covered with a volatilization prevention sheet except for the surface, it is unsuitable for processing such as cutting, and is not suitable for practical use, or an antibacterial agent or an insect repellent is used as a functional substance. In such a case, there is a problem that the same problem as that of the composite material is caused.

Therefore, the present invention does not impair the effects of a functional substance having an effect of aroma, deodorization, antibacterial, insect repellent, etc., even if processing such as cutting or grinding is performed freely, and furthermore, the effects of the present invention can be maintained for a long time. An object of the present invention is to provide a calcium silicate molded body that can be held and a method for producing the same.

[0006]

The technical problem can be solved by the present invention as described below. That is, the calcium silicate compact according to the present invention is obtained by molding and drying a calcium silicate hydrate slurry generated by a hydrothermal reaction by mixing a mixture containing a calcareous raw material and a siliceous raw material with water. One or two or more kinds of microcapsules containing a functional substance having at least one action selected from an aroma action, a deodorant action, an antibacterial action and an insect repellent action are dispersed in a calcium silicate molded article.

In the present invention, the calcium silicate molded body further comprises at least one reinforcing material selected from organic fibers, inorganic fibers, cement and a polymer binder.

Further, the present invention provides any one of the above-mentioned calcium silicate molded articles, wherein microcapsules are blended in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of calcium silicate hydrate.

Further, the method for producing a calcium silicate compact according to the present invention is characterized in that a mixture containing a calcareous raw material and a siliceous raw material is mixed with water to form a calcium silicate hydrate slurry by a hydrothermal reaction. A method for producing a calcium silicate molded article by molding and drying the calcium silicate hydrate slurry, comprising a functional substance having at least one action selected from aroma action, deodorant action, antibacterial action and insect repellent action. One or two or more of the microcapsules thus obtained were added in an amount of 0.
It contains a step of mixing 1 to 10 parts by weight.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory longitudinal sectional view schematically showing a calcium silicate compact according to the present invention.
Reference numeral 1 denotes a calcium silicate compact obtained by adding water to a mixture containing a calcareous raw material and a siliceous raw material and forming and drying a calcium silicate hydrate slurry produced by a hydrothermal reaction. It is a microcapsule containing a functional substance having at least one action selected from deodorant action, antibacterial action and insect repellent action, and is substantially uniformly dispersed in the calcium silicate compact 1.

As the calcareous raw material, slaked lime or quick lime may be used, and as the siliceous raw material, silica stone, silica sand, diatomaceous earth, silica fume, fly ash or the like may be used.

[0013] The calcium silicate hydrate slurry is prepared by adding water to a mixture of a calcareous raw material and a siliceous raw material or a mixture obtained by adding a reinforcing material such as reinforcing fibers to the mixture, if necessary, and using an autoclave to perform hydrothermal treatment. It can be produced by reacting.

The functional substances to be encapsulated in the microcapsules include hinoki cypress essential oil, which has an aroma and mite-preventing action, Hiba essential oil, which has an antibacterial action against MRSA (Methicillin Resistant S. aureus methicillin-resistant Staphylococcus aureus), and sedation Various essential oils such as lavender essential oil having an action and insect repellent action, lemon essential oil having an aroma action, cedar oil, cedar oil, and camphor oil having an aromatic action, an antibacterial action or an insect repellent action may be used. In addition, various compounds such as hinokitiol having an antibacterial effect on MRSA, α-cadinol and T-cadinol having an anti-mite effect may be used.
In addition, synthetic fragrances, deodorants, antibacterial agents, insect repellents, and the like can be microencapsulated and are functional substances having at least one of an aroma action, a deodorant action, an antibacterial action, and an insect repellent action. What is necessary is just to be able to be included in a capsule.

As the microencapsulation means, well-known means such as a coacervation method, an in situ method, and an interfacial polymerization method may be used. It is preferable because a microcapsule having water resistance and pressure resistance can be obtained. In addition, one kind of microencapsulated functional substance may be further microencapsulated, or two or more kinds of functional substances may be combined and microencapsulated.

Various commercially available microcapsules may be used. For example, formalin polycondensation wall microcapsules having a lavender scent (trade name: Matsumoto Microsphere K-502, manufactured by Matsumoto Yushi Seiyaku Co., Ltd.) Melamine resin wall microcapsules with a forest scent (manufactured by SDS Biotech Inc .: trade name: TOMOFRAL; P06-11W: particle size: about 4 to
9 μm), formalin polycondensation wall microcapsules of diethyltoluamide (repellent) (manufactured by Matsumoto Yushi Seiyaku Co., Ltd .:
Product name: Matsumoto Microsphere K-2001: Particle size:
Approximately 5 to 30 μm), IBTA (repellent) formalin polycondensation wall microcapsules (Matsumoto Yushi Seiyaku Co., Ltd .: trade name:
Matsumoto Microsphere K-2002: Particle size: about 5-30
μm) is preferred.

The particle size of the microcapsules used is
Those within the range of 0.1 to 100 μm are suitable.

If the amount of the microcapsules is too small, the effects of the functional substances having the respective functions of aroma, antibacterial, deodorant, insect repellent, etc. cannot be sufficiently obtained. It is preferable to add 0.1 to 10 parts by weight, more preferably 0.5 to 6 parts by weight, based on 100 parts by weight of calcium silicate hydrate. Good to do. In addition,
In particular, when used as a non-combustible material, it is preferable to mix the microcapsules so that the total amount of organic substances combined with organic fibers, polymer binders, and the like added as a reinforcing material is 6 parts by weight or less.

The reinforcing material may be added alone or in combination of two or more of organic fiber, inorganic fiber, cement and polymer binder. Examples of the organic fiber include pulp fiber, polypropylene fiber, acrylic fiber, vinylon fiber and the like. Examples of the inorganic fiber include glass fiber, carbon fiber, and alumina fiber, and examples of the polymer binder include a styrene-butadiene copolymer, an acrylonitrile-butadiene copolymer, and a styrene-acrylic copolymer, which may be appropriately selected.

Next, a method for producing a calcium silicate molded body will be described.

First, an appropriate amount of calcareous material and an appropriate amount of siliceous material are mixed, water is added, and a hydrothermal reaction is performed using an autoclave to form a slurry of calcium silicate hydrate (zonotlite, tobermorite, etc.).

Subsequently, one or more kinds of microcapsules in which the calcium silicate hydrate slurry contains a functional substance having at least one action selected from aroma action, deodorant action, antibacterial action and insect repellent action Of 0.1 to 10 parts by weight with respect to 100 parts by weight of calcium silicate hydrate, and if necessary, reinforcing materials such as inorganic fibers, organic fibers, cement, and polymer binders are added.

Thereafter, the mixture is uniformly mixed by stirring, molded and dried to obtain a calcium silicate molded body.

The step of obtaining the calcium silicate hydrate slurry may be a plurality of hydrothermal reaction steps including a well-known preliminary reaction.

In the step of obtaining a calcium silicate hydrate slurry, microcapsules and / or reinforcing materials such as inorganic fibers, organic fibers, cement, and polymer binders may be added to cause a hydrothermal reaction.

Also, one kind of microcapsules may be added, or two or more kinds of microcapsules may be added in combination.

The method for producing the calcium silicate molded body includes a press molding method, an extrusion molding method, a casting method, a papermaking method, a dry production method, and the like, and any method may be employed.

[0028]

【Example】

Example 1: Silica (SiO ₂ : 97.4%) and slaked lime (CaO: 73.5%)
%) And a molar ratio of CaO / SiO ₂ = 1.00.
25 parts by weight of water was added to 100 parts by weight, and a hydrothermal reaction was carried out in an autoclave at 200 ° C. for 8 hours at 100 rpm to obtain a zonotolite slurry. The generated reaction particles were spherical zonotrites having an average of 30 μm.

To the obtained zonotolite slurry, 2 parts by weight of alkali-resistant glass fiber is added to 100 parts by weight of the solid content (zonotolite) in the slurry, and then, formalin polycondensation wall microcapsules having a lavender scent are prepared. Matsumoto Yushi Pharmaceutical Co., Ltd .: Trade name: Matsumoto Microsphere K-502: Particle size: about 5 to 30 μm) 0.5% by weight of a 30% aqueous slurry in solid content is blended and stirred, and then stirred.
Poured into a mold, the density 250 × 250 × 40mm 0.5g / cm 2
, And dried at a temperature of 110 ° C. for 15 hours to obtain a molded body.

The six faces of the obtained molded body were cut by 10 mm from each surface to obtain a 230 × 230 × 20 mm specimen.

Example 2 Solid content (Zonotorite) in the zonotolite slurry prepared in Example 1
2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight, followed by formalin polycondensation-walled microcapsules having a lavender scent (Matsumoto Microsphere K-502: particle size: about 5 to 30 μm) 30% After mixing 1.0 part by weight of the aqueous slurry in terms of solid content, stirring and dehydrating press molding and drying in the same manner as in Example 1, a molded body was obtained. Obtained.

Example 3 Solid content in the zonotolite slurry prepared in Example 1 (zonotolite)
2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight, followed by formalin polycondensation-walled microcapsules having a lavender scent (Matsumoto Microsphere K-502: particle size: about 5 to 30 μm) 30% After mixing 2.0 parts by weight of the aqueous slurry in terms of solid content, stirring and dewatering press molding and drying in the same manner as in Example 1, a molded body was obtained. Obtained.

Example 4: The solid content of the zonotolite slurry prepared in Example 1 (zonotolite)
2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight, followed by formalin polycondensation-walled microcapsules having a lavender scent (Matsumoto Microsphere K-502: particle size: about 5 to 30 μm) 30% After mixing 3.0 parts by weight of the aqueous slurry in terms of solid content, stirring, and dewatering press molding and drying in the same manner as in Example 1, a molded body was obtained. Obtained.

Example 5: The solid content of the zonotolite slurry prepared in Example 1 (zonotolite)
2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight, followed by formalin polycondensation-walled microcapsules having a lavender scent (Matsumoto Microsphere K-502: particle size: about 5 to 30 μm) 30% After mixing 6.0 parts by weight of the aqueous slurry in terms of solid content, stirring and dehydrating press molding and drying in the same manner as in Example 1, a molded body was obtained. Obtained.

Example 6: Solid content in the zonotolite slurry prepared in Example 1 (zonotolite)
2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight, followed by melamine resin wall microcapsules having a forest scent (manufactured by SDS Biotech Co., Ltd .: trade name: TOMOFRAL; P06-11W: Particle size: about 4-9μ
m) 2.0% by weight of 40% aqueous slurry in solid content
After stirring, the mixture was poured into a mold and subjected to dehydration press molding at a density of 0.5 g / cm ² at 250 × 250 × 40 mm.
The molded body was dried at 24 ° C. for 24 hours to obtain a molded body, and then cut in the same manner as in Example 1 to obtain a test body.

Example 7: The solid content in the zonotolite slurry prepared in Example 1 (zonotolite)
4 parts by weight of styrene-butadiene copolymer latex, 2 parts by weight of alkali-resistant glass fiber, and 0.5 parts by weight of a polymer coagulant were added to 100 parts by weight as a binder, followed by formalin polycondensation having a lavender scent. Wall microcapsules (Matsumoto Microsphere K-502:
Particle size: about 5-30 μm) 30% aqueous slurry is 1.
After mixing with 0 parts by weight and stirring, dehydration press molding and drying were performed in the same manner as in Example 1 to obtain a molded product.
A test body was obtained by cutting in the same manner as in Example 1.

Example 8: Silica (SiO ₂ : 97.4%) and slaked lime (CaO: 73.5%) were mixed at a CaO / SiO ₂ molar ratio of 0.83, and water was 25 times the weight of 100 parts by weight of this mixture. In addition, a hydrothermal reaction was performed in an autoclave at a temperature of 180 ° C. for 8 hours at 100 rpm to obtain a tobermorite slurry.
The produced reaction particles were spherical tobermorites having an average of 30 μm.

To the obtained tobermorite slurry, 2 parts by weight of alkali-resistant glass fiber was added based on 100 parts by weight of the solid content (tobermorite) in the slurry, followed by formalin condensation polymerization microcapsules having a lavender scent. Matsumoto Microsphere K-502: Particle size: about 5
2 to 30 parts by weight of a 30% aqueous slurry in solid content, stirred, dewatered press-molded and dried in the same manner as in Example 1 to obtain a molded product, and cut in the same manner as in Example 1. To obtain a test body.

Example 9: Solid content of the zonotolite slurry prepared in Example 1 (zonotolite)
2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight, followed by formalin condensation polymerized microcapsules of diethyltoluamide (Matsumoto Yushi Seiyaku Co., Ltd .: trade name: Matsumoto Microsphere K-2001: granules) Diameter: about 5
1.0% by weight of a 30% aqueous slurry in solid content, stirred, dehydrated press-molded and dried in the same manner as in Example 1 to obtain a molded product, and cut in the same manner as in Example 1. To obtain a test body.

Example 10: 2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight of the solid content (zonotolite) in the slurry of zonotorite prepared in Example 1, followed by formalin of diethyltoluamide. 3.0 parts by weight of 30% aqueous slurry in solid content was mixed with a condensation polymerization wall microcapsule (Matsumoto Microsphere K-2001: particle size: about 5 to 30 μm), stirred, and then dewatered by the same method as in Example 1. The molded body was molded and dried to obtain a molded body, which was further cut in the same manner as in Example 1 to obtain a test body.

Example 11: 2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight of the solid content (zonotolite) in the slurry of zonotorite prepared in Example 1, followed by formalin of diethyltoluamide. Condensation polymerization microcapsules (Matsumoto Microsphere K-2001: particle size: about 5 to 30 μm) 6.0% by weight of a 30% aqueous slurry in solid content was mixed, stirred, and then dewatered by the same method as in Example 1. The molded body was molded and dried to obtain a molded body, which was further cut in the same manner as in Example 1 to obtain a test body.

Example 12: 2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight of the solid content (zonotolite) in the zonotolite slurry prepared in Example 1, followed by formalin polycondensation of IBTA Wall microcapsules (Matsumoto Yushi Pharmaceutical Co., Ltd .: Trade name: Matsumoto Microsphere K-2002: Particle size: about 5 to 30 μm)
After mixing 3.0 parts by weight of a 30% aqueous slurry in solid content and stirring, dehydration press molding was performed in the same manner as in Example 1,
It was dried to obtain a molded body, and further cut in the same manner as in Example 1 to obtain a test body.

[0043]

[Comparative example]

Comparative Example 1: To the zonotolite slurry prepared in Example 1, 2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight of the solid content (zonotolite) in the slurry, and the mixture was stirred, followed by the same method as in Example 1. By dewatering press molding,
It was dried to obtain a molded body, and further cut in the same manner as in Example 1 to obtain a test body.

Comparative Example 2: Solid content in the tobermorite slurry prepared in Example 8 (tobermorite)
After adding 2 parts by weight of alkali-resistant glass fiber to 100 parts by weight and stirring, dehydration press molding and drying were performed in the same manner as in Example 1 to obtain a molded product.
Specimens were obtained by cutting in the same manner as described above.

Comparative Example 3: Solid content in the zonotolite slurry prepared in Example 1 (zonotolite)
4 parts by weight of styrene-butadiene copolymer latex, 2 parts by weight of alkali-resistant glass fiber,
After adding 0.5 part by weight of a polymer flocculant and stirring, a dewatered press molding and drying were performed in the same manner as in Example 1 to obtain a molded body. Further, a molded body was cut in the same manner as in Example 1 to obtain a test body. Was.

Comparative Example 4: Solid content of the zonotolite slurry prepared in Example 1 (zonotolite)
2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight, followed by formalin polycondensation-walled microcapsules having a lavender scent (Matsumoto Microsphere K-502: particle size: about 5 to 30 μm) 30% After mixing 12 parts by weight of the aqueous slurry in solid content and stirring, dewatering press molding and drying were performed in the same manner as in Example 1 to obtain a molded body.
Further, the specimen was cut in the same manner as in Example 1 to obtain a test body.

Comparative Example 5: The solid content in the zonotolite slurry prepared in Example 1 (zonotolite)
2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight, stirred, dewatered press-molded in the same manner as in Example 1, and dried to obtain a molded body.

On the surface of the obtained molded body, melamine resin wall microcapsules (TOMOFRAL; P06-11W: particle size: about 4 to 9 μm) having forest scent diluted about 100 times with water
) A 40% aqueous slurry was applied to a solid content of 10 mg / cm ² and dried at a temperature of 80 ° C for 1 hour to obtain a dried product.

The obtained dried product was cut in the same manner as in Example 1 to obtain a test body.

Comparative Example 6: The molded product obtained in Comparative Example 5 was
After being immersed in a solution of a commercially available lavender essential oil in ethanol (lavender essential oil: ethanol = 1: 4) for 10 minutes, it was dried at a temperature of 80 ° C. for 1 hour to obtain a dried product. Then, the dried product was cut in the same manner as in Example 1 to obtain a test body.

Comparative Example 7: The molded product obtained in Comparative Example 5 was
After being immersed in a solution of a commercially available hinoki essential oil in ethanol (hinoki essential oil: ethanol = 1: 1) for 24 hours, it was dried at a temperature of 80 ° C. for 15 hours to obtain a dried product. Then, the dried product was cut in the same manner as in Example 1 to obtain a test body.

Comparative Example 8: The solid content in the zonotolite slurry prepared in Example 1 (zonotolite)
2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight, and subsequently, formalin condensation polymerized microcapsules of diethyltoluamide (Matsumoto Microsphere K
-2001: Particle size: about 5 to 30 μm) 12% by weight of a 30% aqueous slurry in solid content was mixed, stirred, dewatered press-molded and dried in the same manner as in Example 1 to obtain a molded product. In the same manner as in Example 1, a test piece was obtained.

Comparative Example 9: Solid content of the zonotolite slurry prepared in Example 1 (zonotolite)
2 parts by weight of alkali-resistant glass fiber was added to 100 parts by weight, followed by IBTA formalin polycondensation-walled microcapsules (Matsumoto Microsphere K-2002: particle size:
About 5 to 30 μm) 12 parts by weight of a 30% aqueous slurry in solid content was mixed, stirred, and dewatered press-molded and dried in the same manner as in Example 1 to obtain a molded product.
Specimens were obtained by cutting in the same manner as described above.

Comparative Example 10: The molded product obtained in Comparative Example 5 was replaced with a commercially available diethyltoluamide (Aldrich Chemical Com.
pany. Inc.) was immersed in a solution of ethanol (diethyltoluamide: ethanol = 1: 1) for 24 hours, and dried at a temperature of 50 ° C. for 24 hours to obtain a dried product. Then, the dried product was cut in the same manner as in Example 1 to obtain a test body.

The test pieces of Examples 1 to 8 and Comparative Examples 1 to 7 were subjected to an aroma test and a strength test. Table 1 shows the results.

[0056]

[Table 1]

The scent was evaluated by 10 testers (5 males and 5 females aged 22 to 35 years) in a six-point scale (no scent: 0,
Weak: 1, Slightly weak: 2, Just right: 3, Slightly strong:
4, too strong: 5) was performed, and the average value of 2 to 4 was judged as acceptable ("o").

The flexural strength was measured in accordance with JIS Z 2101 (however, the dimensions of the test piece were 230 × 15 × 15 mm).
The compression strength was determined in accordance with JIS Z 2101. Peel strength
Performed according to JISA 5908. The specific strength is the bending strength /
(Bulk density) Calculated from ² .

As a result, all of the test specimens of Examples 1 to 8 had good aroma. Each of the test pieces of Examples 1 to 6 was compared with the test piece of Comparative Example 1, the test piece of Example 7 was compared with the test piece of Comparative Example 3, and the test piece of Example 8 was a comparative example. No decrease in strength due to the microcapsule blending was observed, as compared with the test specimen No. 2. In addition, the test article of Comparative Example 4 had too strong aroma, and a decrease in strength due to the addition of microcapsules was observed as compared with the test article of Comparative Example 1. Moreover, the test piece of Comparative Example 5 did not smell at all because the part where the fragrance was adhered was scraped off. In addition, each of the test specimens of Comparative Examples 6 and 7 did not sufficiently permeate the fragrance to the inside, and therefore, only a little fragrance was emitted.

Each of the test specimens of Examples 9 to 12 and Comparative Examples 1 and 8 to 10 was subjected to an anti-mite and insect control test. Table 2 shows the results.

[0061]

[Table 2]

The effects of mites and insect repellents were defined as repellent effects against Dermatophagoides farinae. First, 100 × 100
The pieces were cut into a size of 10 mm and placed in an aluminum bat of an incubator at a temperature of 25 ° C. and a humidity of about 90% at intervals of 10 mm. Next, a powder sample having a moisture content of about 12% (manufactured by Oriental Yeast Co., Ltd .: trade name:
The powder sample for mouse MF) is placed evenly in 3.0 g increments,
A medium in which Dermatophagoides farinae was propagated was placed between the molded bodies. And 24 hours after putting the medium, 7 × 7cm
Was placed on each molded product, and after one hour, the number of mites on the front and back of the paper was examined.

As a result, each of the test specimens of Examples 9 to 12 had a repellent effect on Dermatophagoides farinae, and no decrease in strength due to the blending of microcapsules was observed as compared with the test specimen of Comparative Example 1. In addition, each of the test specimens of Comparative Examples 8 and 9 had a repellent effect on Dermatophagoides farinae, but a decrease in strength due to the addition of microcapsules was observed as compared with the test specimen of Comparative Example 1. Further, in the test body of Comparative Example 10, since the portion impregnated with diethyltoluamide was scraped off, no repellent effect against Dermatophagoides farinae was not observed.

[0064]

As described above, according to the present invention, a functional substance having an aroma action, an antibacterial action, a deodorant action, an anti-mite action and the like, which is microencapsulated, is dispersed in a calcium silicate molded article. Since the calcium silicate molded body can retain the function of the microcapsule and maintain it for a long period of time regardless of the cutting process, it can be used for a wide variety of applications, not only for interior and exterior materials. Can be.

Therefore, it can be said that the industrial applicability of the present invention is very high.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional explanatory view schematically showing a calcium silicate molded body according to the present invention.

[Explanation of symbols]

 1 Calcium silicate compact 2 Microcapsule

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshihiro Kuroki 80, Kada, Takuma-cho, Mitoyo-gun, Kagawa Prefecture Inside the Takuma Plant of Kamijima Chemical Industry Co., Ltd. No. 7 Kamishima Chemical Industry Co., Ltd.

Claims (4)

[Claims] 1. A calcium silicate formed body obtained by mixing and mixing a mixture containing a calcareous raw material and a siliceous raw material with water to form and dry a calcium silicate hydrate slurry produced by a hydrothermal reaction. A calcium silicate molded body characterized in that one or two or more kinds of microcapsules containing a functional substance having at least one action selected from an action, a deodorant action, an antibacterial action and an insect repellent action are dispersed therein. 2. The calcium silicate molded product according to claim 1, wherein at least one reinforcing material selected from organic fibers, inorganic fibers, cement, and a polymer binder is added. 3. The calcium silicate molded product according to claim 1, wherein the microcapsules are blended in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the calcium silicate hydrate. 4. A calcium silicate hydrate slurry is produced by mixing a mixture containing a calcareous raw material and a siliceous raw material with water to produce a calcium silicate hydrate slurry by a hydrothermal reaction, and then forming and drying the calcium silicate hydrate slurry. In the method for producing a calcium silicate molded body, one or more of microcapsules containing a functional substance having at least one action selected from aroma action, deodorization action, antibacterial action and insect repellent action are contained in calcium silicate. 0.1 for 100 parts by weight of hydrate
A method for producing a calcium silicate molded body, comprising a step of blending up to 10 parts by weight.