JP2013233492A - Antibacterial ceramic body - Google Patents
Antibacterial ceramic body Download PDFInfo
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- JP2013233492A JP2013233492A JP2012106426A JP2012106426A JP2013233492A JP 2013233492 A JP2013233492 A JP 2013233492A JP 2012106426 A JP2012106426 A JP 2012106426A JP 2012106426 A JP2012106426 A JP 2012106426A JP 2013233492 A JP2013233492 A JP 2013233492A
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- antibacterial
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Abstract
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この発明は抗菌性セラミック体に関し、主として、球状に成形され、水の殺菌・浄化に使用される。 The present invention relates to an antibacterial ceramic body, and is mainly formed into a spherical shape and used for sterilization and purification of water.
従来におけるこの種の抗菌性セラミック体としては、セラミックスにAgの水溶性金属塩を吸着保持させた後、８００℃以上の温度で焼成したものが知られており、熱に強いとともに分散性が良いため広範囲な分野に使用でき、また、金属イオンの溶出がないため、安全性を特に必要とする分野に使用できるものとされている。 As this type of antibacterial ceramic body, a ceramic body is known which is made by adsorbing and holding a water-soluble metal salt of Ag and then firing it at a temperature of 800 ° C. or higher. Therefore, it can be used in a wide range of fields, and since there is no elution of metal ions, it can be used in fields where safety is particularly required.
しかしながら、かかる従来の抗菌性セラミック体にあっては、８００度以上で焼成していたため、Agが酸化物になってイオン化しにくく、又、セラミックにAgイオンの水溶性金属塩を吸着保持させたにすぎないため、Agイオンを均一に溶出しにくいため、抗菌効果が乏しいとともに一定の割合で抗菌効果を発揮しにくいという不都合を有した。 However, in such a conventional antibacterial ceramic body, since it was baked at 800 ° C. or higher, Ag became an oxide and hardly ionized, and a water-soluble metal salt of Ag ions was adsorbed and held on the ceramic. Therefore, it was difficult to elute Ag ions uniformly, so that the antibacterial effect was poor and the antibacterial effect was hardly exhibited at a certain ratio.
この発明の課題は前記不都合を解消することである。 An object of the present invention is to eliminate the inconvenience.
この課題を達成するために、この発明に係る抗菌性セラミック体においては、セラミックに、一価のAgイオンを含む水溶性ガラスの粉状物を混合し、焼成したことを特徴とするものである。 In order to achieve this object, the antibacterial ceramic body according to the present invention is characterized in that a ceramic is mixed with a powder of water-soluble glass containing monovalent Ag ions and fired. .
この場合、前記混合した後、球状に成形後、焼成することができる。 In this case, after mixing, it can be fired after being formed into a spherical shape.
また、前記焼成は、６００〜８００度Cで行うことができる。 Moreover, the said baking can be performed at 600-800 degreeC.
さらに、前記セラミックには、アルミナ又はシリカが該当する。 Furthermore, the ceramic corresponds to alumina or silica.
さらに、前記一価のAgイオンを含む水溶性ガラスの粉状物は、水溶性ガラスの粉状物にAg粉体，銀化合物を混合することによって製造することができる。 Furthermore, the water-soluble glass powder containing monovalent Ag ions can be produced by mixing Ag powder and a silver compound with the water-soluble glass powder.
この発明に係る抗菌性セラミック体は上記のように構成されているため、即ち、セラミックに、一価のAgイオンを含む水溶性ガラスの粉状物を混合し、焼成したものであるため、Agイオンが水溶性ガラスを介してセラミックに混合され、アモルファスの状態でセラミック中に満遍なく混ざるものである。このため、一定の割合で抗菌効果を発揮するにあたってAgイオンの量が少なくてすむ。 Since the antibacterial ceramic body according to the present invention is configured as described above, that is, it is obtained by mixing and firing a water-soluble glass powder containing monovalent Ag ions in the ceramic. Ions are mixed into the ceramic through the water-soluble glass, and are uniformly mixed in the ceramic in an amorphous state. For this reason, in order to exhibit an antibacterial effect at a certain ratio, the amount of Ag ions can be reduced.
また、Agイオンが水溶性ガラスを介してセラミックに混合されているため、接触した液体（湿気）によってガラス成分を溶出し、Agイオンがこのガラスの溶解に応じて徐々に抗菌力を発揮する。長期にわたって、均一の割合で殺菌効果を発揮できる。 In addition, since Ag ions are mixed with the ceramic through the water-soluble glass, the glass component is eluted by the contacted liquid (humidity), and the Ag ions gradually exert antibacterial activity as the glass dissolves. It can exhibit a bactericidal effect at a uniform rate over a long period of time.
よって、この抗菌性セラミック体を使用すれば、抗菌効果が優れているとともに一定の割合で長期にわたって抗菌効果を維持することができる。 Therefore, when this antibacterial ceramic body is used, the antibacterial effect is excellent and the antibacterial effect can be maintained at a constant rate for a long time.
さらに、６００〜８００度Cで焼成しているため、Agイオンが遊離しやすく殺菌効果が向上する。 Furthermore, since baking is performed at 600 to 800 ° C., Ag ions are easily released and the bactericidal effect is improved.
また、セラミックはポーラス状であるため、ガラス成分がこのポーラスに侵入し、その付着力が強固になるため、Agイオンによる殺菌効果も長期にわたって維持することができる。 Further, since the ceramic is porous, the glass component penetrates into the porous and its adhesion is strengthened, so that the bactericidal effect by Ag ions can be maintained for a long time.
なお。抗菌、殺菌効果は表１に示す。 Note that. The antibacterial and bactericidal effects are shown in Table 1.
この発明に係る「抗菌性セラミック」において、「セラミック」は粉状であり、アルミナ、シリカ又はこれらの混合物が該当する。 In the “antibacterial ceramic” according to the present invention, “ceramic” is powdery, and corresponds to alumina, silica, or a mixture thereof.
「一価のAgイオンを含む水溶性ガラスの粉状物」は、水溶性ガラスの粉状物（２００メッシュ以下）に一価のAg粉体，一価の銀化合物を混合したものである。 “Water-soluble glass powder containing monovalent Ag ions” is a mixture of water-soluble glass powder (200 mesh or less) with monovalent Ag powder and monovalent silver compound.
「焼成温度」は６００〜８００度Cが適している。この理由は６００度以下であると球体が壊れ易く、８００度以上であるとＡｇイオンの機能が低下するからである。 The “calcination temperature” is suitably 600 to 800 ° C. This is because if the angle is 600 degrees or less, the sphere is easily broken, and if it is 800 degrees or more, the function of Ag ions is lowered.
「球状に成形」する場合、大きさは直径６．０ｍｍ位が適している。 In the case of “molding into a spherical shape”, a size of about 6.0 mm in diameter is suitable.
「Ag」以外に、Pt，Ge，Ti等を少量（5.0％位）添加することもできる。 In addition to “Ag”, a small amount (about 5.0%) of Pt, Ge, Ti, etc. can be added.
アルミナ調整品をコアとし、１０パーセンン程度のＡｇイオンを含む水溶性ガラスの粉体に、セラミックの主原料として１．０パーセント以下のバインダーを含むアルミナ９０パーセントを７５０°Cで除熱・除冷することによりボール状に成型（直径６．０ｍｍ位）する。 Heat removal and cooling at 750 ° C with 90% alumina containing 1.0% or less binder as the main raw material of ceramic in water-soluble glass powder containing about 10% Ag ion with alumina preparation as the core By doing so, it is molded into a ball shape (about 6.0 mm in diameter).
この実施例で製造した抗菌性セラミックボール（抗菌性セラミック体）の抗菌試験を次のように行った。
a. 試料名
・精製水（比較対照液）
・抗菌性セラミックボール（Ag１）
（銀コーティング量1.2ｇ）
・抗菌性セラミックボール（Ag２）
（銀コーティング量2.4ｇ）
・抗菌性セラミックボール（Ag３）
（銀コーティング量3.6ｇ）
b.試験項目 E.coli（大腸菌）
c.試験方法
・標準平板培養法
(1).試験品20gをコニカルビーカーに入れ高圧蒸気滅菌したのち、滅菌精製水100mlを加えたものを試料とする。
(2).E.coli培養液（Bio Ball E.coliをSCDブイヨンで増菌）を滅菌精製水で希釈し、1×108cfu/mlの菌液を調製する。
(3).(1)で作成した試料に菌液を1mlずつ接種する（菌濃度１×104cfu/ml）。
(4).36°Cで振とうし、３時間後、７時間後、24時間後の菌数を標準平板培養法にて測定する。
ｄ.試験結果
The antibacterial test of the antibacterial ceramic ball (antibacterial ceramic body) manufactured in this example was performed as follows.
a. Sample name
・ Purified water (Comparative solution)
・ Antimicrobial ceramic ball (Ag1)
(Silver coating amount 1.2g)
・ Antimicrobial ceramic ball (Ag2)
(Silver coating amount 2.4g)
・ Antimicrobial ceramic ball (Ag3)
(Silver coating amount 3.6g)
b. Test item E.coli
c. Test method / Standard plate culture method
(1). Put 20 g of the test product in a conical beaker and sterilize by autoclaving, and then add 100 ml of sterilized purified water as a sample.
(2) E.coli culture solution (Bio Ball E.coli is enriched with SCD broth) is diluted with sterilized purified water to prepare a 1 × 10 8 cfu / ml bacterial solution.
(3) Inoculate the sample prepared in (1) with 1 ml of bacterial solution (bacterial concentration 1 × 10 4 cfu / ml).
(4) Shake at 36 ° C and measure the number of bacteria after 3 hours, 7 hours and 24 hours by standard plate culture method.
d. Test results
この発明に係る抗菌性セラミック体は、Agイオンが水溶性ガラスを介してセラミックに混合されているため、接触した液体（湿気）によってガラス成分を溶出し、Agイオンがこのガラスの溶解に応じて徐々に抗菌力を発揮する。長期にわたって、均一の割合で殺菌効果を発揮できる。産業上の利用可能性は極めて高いものである。
In the antibacterial ceramic body according to the present invention, Ag ions are mixed with the ceramic via the water-soluble glass, so the glass component is eluted by the liquid (humidity) in contact, and the Ag ions are dissolved according to the dissolution of the glass. Gradually exerts antibacterial activity. It can exhibit a bactericidal effect at a uniform rate over a long period. Industrial applicability is extremely high.
Claims (5)
水溶性ガラスの粉状物にAg粉体，銀化合物を混合することによって製造されることを特徴とする請求項１，請求項２，請求項３又は請求項４の抗菌性セラミック体。
The water-soluble glass powder containing monovalent Ag ions is
5. The antibacterial ceramic body according to claim 1, wherein the antibacterial ceramic body is manufactured by mixing Ag powder and a silver compound into a water-soluble glass powder.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2012106426A JP6010834B2 (en) | 2012-05-08 | 2012-05-08 | Antibacterial ceramic body |
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| JP2012106426A JP6010834B2 (en) | 2012-05-08 | 2012-05-08 | Antibacterial ceramic body |
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| JP6010834B2 JP6010834B2 (en) | 2016-10-19 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017043564A (en) * | 2015-08-27 | 2017-03-02 | 株式会社コバテクノロジー | Bacteriocidal granular material, process for producing bacteriocidal granular material, and liquid spoilage suppressing device |
| US9622483B2 (en) | 2014-02-19 | 2017-04-18 | Corning Incorporated | Antimicrobial glass compositions, glasses and polymeric articles incorporating the same |
| US11039621B2 (en) | 2014-02-19 | 2021-06-22 | Corning Incorporated | Antimicrobial glass compositions, glasses and polymeric articles incorporating the same |
| US11039620B2 (en) | 2014-02-19 | 2021-06-22 | Corning Incorporated | Antimicrobial glass compositions, glasses and polymeric articles incorporating the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102582713B1 (en) * | 2021-03-16 | 2023-09-25 | 엘지전자 주식회사 | Antibacterial composite glass composition and home electric appliance using the same |
Citations (4)
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| JPH09157000A (en) * | 1995-11-30 | 1997-06-17 | Nippon Adoola Nachiyuraru:Kk | Tourmaline ceramic and its production |
| JPH1157729A (en) * | 1997-08-11 | 1999-03-02 | Yaskawa Electric Corp | Water purifier |
| JP2003136074A (en) * | 2001-11-05 | 2003-05-13 | Kokichi Aoki | Water modifier, water modifying apparatus and method for utilizing the apparatus |
| JP2004269427A (en) * | 2003-03-07 | 2004-09-30 | Kokichi Aoki | Powdery bath preparation, formed bath preparation, and container and showerhead containing the same, and facewash |
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2012
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09157000A (en) * | 1995-11-30 | 1997-06-17 | Nippon Adoola Nachiyuraru:Kk | Tourmaline ceramic and its production |
| JPH1157729A (en) * | 1997-08-11 | 1999-03-02 | Yaskawa Electric Corp | Water purifier |
| JP2003136074A (en) * | 2001-11-05 | 2003-05-13 | Kokichi Aoki | Water modifier, water modifying apparatus and method for utilizing the apparatus |
| JP2004269427A (en) * | 2003-03-07 | 2004-09-30 | Kokichi Aoki | Powdery bath preparation, formed bath preparation, and container and showerhead containing the same, and facewash |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9622483B2 (en) | 2014-02-19 | 2017-04-18 | Corning Incorporated | Antimicrobial glass compositions, glasses and polymeric articles incorporating the same |
| US11039619B2 (en) | 2014-02-19 | 2021-06-22 | Corning Incorporated | Antimicrobial glass compositions, glasses and polymeric articles incorporating the same |
| US11039621B2 (en) | 2014-02-19 | 2021-06-22 | Corning Incorporated | Antimicrobial glass compositions, glasses and polymeric articles incorporating the same |
| US11039620B2 (en) | 2014-02-19 | 2021-06-22 | Corning Incorporated | Antimicrobial glass compositions, glasses and polymeric articles incorporating the same |
| US11464232B2 (en) | 2014-02-19 | 2022-10-11 | Corning Incorporated | Antimicrobial glass compositions, glasses and polymeric articles incorporating the same |
| US11470847B2 (en) | 2014-02-19 | 2022-10-18 | Corning Incorporated | Antimicrobial glass compositions, glasses and polymeric articles incorporating the same |
| US11751570B2 (en) | 2014-02-19 | 2023-09-12 | Corning Incorporated | Aluminosilicate glass with phosphorus and potassium |
| JP2017043564A (en) * | 2015-08-27 | 2017-03-02 | 株式会社コバテクノロジー | Bacteriocidal granular material, process for producing bacteriocidal granular material, and liquid spoilage suppressing device |
| CN106472567A (en) * | 2015-08-27 | 2017-03-08 | 株式会社小林科技 | Bactericidal properties coccoid, the manufacture method of bactericidal properties coccoid and liquid addle restraining device |
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|---|---|
| JP6010834B2 (en) | 2016-10-19 |
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