JPH09157000A - Tourmaline ceramic and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a tourmaline ceramic improved in water quality improving effect and disinfecting effect, by sintering a mixture of tourmaline fine powder, ceramic powder and silver to pelletize the mixture. SOLUTION: Tourmaline fine powder having 1-15μm average fine particle in an amount of 5-50wt.% is mixed with 40-90wt.% of ceramic powder and 0.1-10wt.% of silver and pelletized by sintering at 800-950 deg.C to give a tourmaline ceramic having a shape such as spherical shape, elliptic cylindrical shape or comfit-like shape and 1-10mm average size.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to tourmaline called tourmaline and a material for improving the water quality by utilizing the surface-active effect of water on the tourmaline or a material for improving the health of the human body. .

[0002]

2. Description of the Related Art Tourmaline has piezoelectric and pyroelectric effects due to uneven distribution of dipole moments, but it was discovered around 1989 that it possessed a permanent electrode (Kubo theory). The principle is briefly explained.Ceramic pellets and fibers made of the intermediate product of the thermal reaction containing fine trimerin particles or tourmaline particles cause a weak interaction with water and cause an extremely weak electrolysis which cannot be measured. , a small portion of water, hydrogen and H ₃ O ₂ ^- is decomposed into (hydroxyl ions), as a result the water is surface activated, it affects the various materials. For example, it is said that scale and slime (red water in the case of water supply) are suppressed by passivation of metals. According to the Kubo theory, hydroxyl ions consist of hydrophilic and hydrophobic groups and form a film like a monolayer on the water surface just like a surfactant, so the effect is doubled compared to the amount present. It is said that the shape will be

Recently, as one of the application fields of permanent electrodes using tourmaline, the production of negative air ions has been confirmed, and attention is focused on the application to equipment having effects on the human body such as sedation, good sleep, and blood pressure reduction. Has been done. When the above-mentioned tourmaline is used as a ceramic pellet, the tourmaline is ground to an average particle size of 1 to 15 μm, and a new ceramic raw material such as ceramics (silicate minerals typified by kaolin, alumina, zirconia) or all (Including a transfer metal oxide), and pellets formed into a spherical shape or a cylindrical shape are burned at about 800 to 950 ° C. for 5 minutes to 5 hours to obtain a product. It is said that this tourmaline pellet has a surface activating effect by acting on water.
Further, it is said that when the surface of this tourmaline ceramic is plated with silver, the interfacial activation effect is significantly amplified.

[0004]

Conventionally, tourmaline pellets plated with silver in order to amplify the surface activating effect have a physical stain on them when used in water for a long period of time. Poisoning is caused by metal ions, which have a high ionization tendency, and the effect gradually decreases. If it is continuously used in water, it will last only half a year or one year. Therefore, when the effect is reduced, it is necessary to rub the pellets together to scrape off the poisoned surface, and perform a new silver plating treatment by saying "tomorrow". Therefore, since regeneration takes time and effort, the present invention intends to simply amplify the interfacial activation effect of the tourmaline pellets and to provide almost maintenance-free state.

[0005]

The present invention is a tourmaline ceramics characterized by being formed by sintering a mixture of tourmaline fine powder, ceramics powder and silver into pellets. The amount of the mixed material is 5 to 50 for tourmaline fine powder.
% By weight, ceramics 40-90% by weight, silver 0.1-0.1%
A range of 10% by weight is suitable. The tourmaline fine powder has an average particle size of 1 to 15 μm, and the pelletized product has a shape such as a sphere, a short circle, or a sucrose sugar shape, and an average size of 1 to 10 mm is suitable.

[0006] Tourmaline has a smaller particle size of 1
Since it is easy to exhibit the electrical characteristics of each particle, it is effective to use it as a fine powder having an average particle size of 1 to 15 μm.
If it exceeds 15 μm, the characteristics cannot be sufficiently exhibited.
Also, it does not make much sense to refine to less than 1 μm. And the amount of tourmaline is preferably in the range of 5 to 50% by weight. 5
If it is less than 50% by weight, it is difficult to achieve the intended purpose, and if it exceeds 50% by weight, it is not preferable from the viewpoint of shape retention. Optimal amount is 1
It is around 0% by weight. Ceramic powder is alumina,
Zirconia, calcium phosphate, or any other material having a heat resistance of 900 ° C. may be used. The appropriate amount is 40 to 90% by weight from the viewpoint of moldability, shape retention and strength.

Addition of 0.1 to 10% by weight of silver amplifies the action of tourmaline. That is, if tourmaline ceramics is used in water for a long time, physical stains may be attached, or the effect may be decreased due to poisoning by other metal ions having a high ionization tendency, but by mixing silver, The antibacterial effect makes it possible to suppress the decreasing tendency of the above effects. Moreover, since silver is mixed inside the pellets, even if poisoned, the pellets are simply rubbed against each other and the surface is scratched to form a new active surface, which eliminates the need for re-plating as in the conventional case. Although silver may be directly mixed with other raw materials to form a pellet, if silver is previously attached to a ceramic powder by a coprecipitation method or a chemical plating method, the dispersibility and heat resistance are good.

That is, according to the present invention, as a manufacturing method, tourmaline fine powder is added to a ceramic powder produced by impregnating silver by a coprecipitation method or a chemical plating method,
The method is characterized by firing at a predetermined temperature and pelletizing. Ceramic powder made by impregnating silver by coprecipitation method or chemical plating method is commercially available (Sumitomo Osaka Cement, Shintoray Ceramics, etc.),
The tourmaline fine powder is mixed with an appropriate amount of the silver powder depending on the content of the silver, and optionally with other ceramic powder. Since the effectiveness of tourmaline is lost at around 1000 ° C, firing is performed in the range of 800 to 950 ° C.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to examples.

[0010]

[Examples] Commercially available silver-impregnated ceramics (Narumi Seito, trade name Narculin) was used. This is produced by a coprecipitation method from a solution using a calcium phosphate ceramics raw material and silver nitrate.

Using the ceramic powder, materials were mixed so as to have the following composition. Tourmaline (average particle size 10 μm) 10% by weight Ceramics 89% by weight Silver 1% by weight The above mixture was fired at 850 ° C. for an hour, and the average particle size was 4 mm.
Ceramic pellets of This pellet 1k
When g was placed in a water-permeable container and immersed in running water (tap water) to measure the life, the results shown in Table 1 were obtained. In Table 1,
The same ceramic materials and tourmaline as in the examples were blended in the same amount, except that the comparative material in which silver pellets were attached by plating was immersed in running water under the same conditions, and the results of the same life measurements were also shown.

[0012]

[Table 1]

◯ in Table 1 indicates that the action is not hindered,
Δ indicates a state where the surface of the pellet is slightly soiled, and X indicates a state where the surface is soiled and the effect is lost. In the case of the example, the surface of the pellet was slightly soiled in the first year, but in the case of the comparative material, the surface was soiled and lost its activity in September. Moreover, in the case of the example, only the work of scraping off the dirt on the surface was immediately returned to the original active material by the scraping, but in the case of the comparative material, the dirt on the surface was removed by the scraping. After that, the initial effect could not be obtained unless the surface was plated with silver.

[0014]

INDUSTRIAL APPLICABILITY The tourmaline ceramics containing silver according to the present invention amplifies the water quality improving effect of tourmaline itself, and brings about the sterilizing effect inherent to silver and the water quality improving effect. Further, tourmaline has been confirmed to generate negative air ions, and attention is focused on its application to devices that can be expected to have effects such as sedation, good sleep, and blood pressure reduction. or,
According to the manufacturing method of the present invention, maintenance-free tourmaline ceramics can be obtained very easily.

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Claims (4)

[Claims] 1. A tourmaline ceramics which is obtained by sintering a mixture of tourmaline (tourmaline) fine powder, ceramic powder and silver into pellets. 2. The tourmaline ceramics according to claim 1, which comprises 5 to 50% by weight of tourmaline, 40 to 90% by weight of ceramics, and 0.1 to 10% by weight of silver. 3. The tourmaline powder has an average particle size of 1 to 15 μm.
2. The tourmaline ceramics according to claim 1, wherein the pellet has a spherical shape, a short columnar shape, or a lumpy sugar shape, and has an average size of 1 to 10 mm. 4. A method for producing tourmaline ceramics, which comprises adding tourmaline fine powder to a ceramics powder prepared by impregnating silver by a coprecipitation method or a chemical plating method and firing at a predetermined temperature to pelletize. .