JP2002255627A - Lightweight reinforced porcelain and method of producing the same - Google Patents
Lightweight reinforced porcelain and method of producing the sameInfo
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- JP2002255627A JP2002255627A JP2001056210A JP2001056210A JP2002255627A JP 2002255627 A JP2002255627 A JP 2002255627A JP 2001056210 A JP2001056210 A JP 2001056210A JP 2001056210 A JP2001056210 A JP 2001056210A JP 2002255627 A JP2002255627 A JP 2002255627A
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- porcelain
- weight
- fired body
- alumina
- lightweight reinforced
- Prior art date
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- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高強度で、かつ軽
量化した軽量強化磁器及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-strength and lightweight lightweight reinforced porcelain and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】強化磁器を製造するには、磁器の組成に
微細な粒子径のアルミナ粒子を２０％〜４０％程度、磁
器素地中に分散して配合し、磁器素地の強度を増加させ
る方法が一般にとられている。しかしながら、アルミナ
粒子の添加は、アルミナ自身の密度が約４ｇ／ｃｍ3も
あるためアルミナの配合量が増加するに伴い、磁器素地
の嵩密度が増加し、一般に使用されている強化磁器の嵩
密度は約２．８ｇ／ｃｍ 3〜２．９ｇ／ｃｍ3と、一般磁
器の嵩密度約２．４ｇ／ｃｍ3と比べかなり大きくなっ
ている。また、多量のアルミナ粒子が素地中に分散して
いるため、素地の透光性が大きく減少し、磁器としての
美的な付加価値が大きく損なわれる。さらに磁器製品自
体の重量が増加し、レストランやホテルで使用されてい
る業務用食器など、また、航空機内で使用される機内食
用の食器など磁器製品の運搬や移動時及びその取り扱い
において大きな欠点となっている。2. Description of the Related Art To manufacture reinforced porcelain, the composition of the porcelain must be adjusted.
Alumina particles with a fine particle size of about 20% to 40%
Disperse and mix in porcelain base to increase the strength of porcelain base
Generally used. However, alumina
The addition of the particles results in a density of alumina of about 4 g / cm.ThreeAlso
As the amount of alumina increases,
Increases the bulk density of commonly used reinforced porcelain.
Density is about 2.8g / cm Three~ 2.9 g / cmThreeAnd general magnet
Approximately 2.4 g / cmThreeConsiderably larger than
ing. Also, a large amount of alumina particles are dispersed in the substrate
As a result, the translucency of the substrate is greatly reduced,
Aesthetic added value is greatly impaired. Further porcelain products
Increases body weight and is used in restaurants and hotels
Commercial tableware, and in-flight meals used on aircraft
When transporting and moving porcelain products such as tableware for home use and handling
Is a major drawback.
【０００３】そのため、それらの欠点を解決し、素地の
軽量化を実現するため、焼成中に燃焼し素地中に気孔を
形成させる目的で有機物を混入したり、気孔をあらかじ
め素地中に形成させる目的で、無機物で耐火性の中空粒
子を混入したりしている。しかし、有機物を混入すると
陶土の保管期間が長くなった場合、有機物が腐敗して悪
臭を放ったり、カビやコケが生えたりして使用できなく
なることがある。また、無機物で耐火性の中空粒子を混
入した場合は、中空部分すなわち気孔径が大きく十分な
素地の強度が得られず、さらに、強度を増加させるため
に多量のアルミナ粒子を素地中に分散させると、磁器素
地の透光性が得られないという問題も生じる。[0003] Therefore, in order to solve these drawbacks and to reduce the weight of the substrate, an organic substance is mixed in for the purpose of burning during firing to form pores in the substrate, or the purpose of forming pores in the substrate in advance. Therefore, inorganic and refractory hollow particles are mixed. However, when the organic material is mixed, if the storage period of the pottery clay is prolonged, the organic material may decay and give off a bad smell, or mold and moss may grow and become unusable. In addition, when inorganic and refractory hollow particles are mixed, the hollow portion, that is, a large pore size, does not provide sufficient strength of the base material, and further, a large amount of alumina particles are dispersed in the base material to increase the strength. In addition, there arises a problem that the light transmittance of the porcelain body cannot be obtained.
【０００４】そのため、レストランやホテルで使用され
ている業務用食器など、また、航空機内で使用される機
内食用の食器など強化磁器製品のニーズが増える中、磁
器製品の高強度と軽量化の両立、さらに美的付加価値を
持った磁器が望まれている。[0004] For this reason, as needs for reinforced porcelain products such as tableware for business use used in restaurants and hotels and tableware for in-flight meals used in aircraft have increased, compatibility between high strength and light weight of porcelain products has been increasing. Porcelain with more aesthetic value has been desired.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、嵩密度が一
般の磁器と同程度もしくはそれ以下であり、しかも平均
曲げ強度が一般の磁器より大きい１００ＭＰａ以上の物
性を有し、高い透光性を持った軽量強化磁器の提供とそ
の製造方法の提供を課題とする。DISCLOSURE OF THE INVENTION The present invention has a bulk density equal to or lower than that of general porcelain, and has an average bending strength of 100 MPa or more, which is higher than that of general porcelain. It is an object of the present invention to provide a lightweight reinforced porcelain having a characteristic and a method of manufacturing the same.
【０００６】[0006]
【課題を解決するための手段】本発明の第１の軽量強化
磁器は、少なくとも二酸化珪素、アルミナ、五酸化リ
ン、アルカリ金属酸化物からなる焼成体素地からなり、
該焼成体素地中には微細独立気孔が多数形成され、該焼
成体素地の嵩密度が２．６ｇ／ｃｍ3 以下で、平均曲げ
強度が１２０ＭＰａ以上であることを特徴とする。The first lightweight reinforced porcelain of the present invention comprises a fired body comprising at least silicon dioxide, alumina, phosphorus pentoxide, and an alkali metal oxide.
A large number of fine independent pores are formed in the fired body, the bulk density of the fired body is 2.6 g / cm 3 or less, and the average bending strength is 120 MPa or more.
【０００７】本発明の第２の軽量強化磁器は、少なくと
も二酸化珪素、アルミナ、五酸化リン、アルカリ金属酸
化物、フッ素からなる焼成体素地からなり、該焼成体素
地中には微細独立気孔が多数形成され、該焼成体素地の
嵩密度が２．５ｇ／ｃｍ3 以下で、平均曲げ強度が１０
０ＭＰａ以上であることを特徴とする。A second lightweight reinforced porcelain of the present invention comprises a fired body made of at least silicon dioxide, alumina, phosphorus pentoxide, an alkali metal oxide, and fluorine, and has a large number of fine independent pores in the fired body. The sintered body has a bulk density of 2.5 g / cm 3 or less and an average bending strength of 10
It is characterized by being at least 0 MPa.
【０００８】本発明の第１の軽量強化磁器の製造方法
は、珪石、粘土類、長石類、リン酸アルミニウム、酸化
アルミニウムから選ばれた原料を１２００〜１４００℃
で焼成し、少なくとも二酸化珪素、アルミナ、五酸化リ
ン、アルカリ金属酸化物からなり、微細独立気孔を多数
含有し、嵩密度が２．６ｇ／ｃｍ3以下で、平均曲げ強
度が１２０ＭＰａ以上である焼成体素地とすることを特
徴とする。[0008] In the first method for producing a lightweight reinforced porcelain of the present invention, a raw material selected from quartzite, clays, feldspars, aluminum phosphate and aluminum oxide is used at 1200 to 1400 ° C.
Baked with at least silicon dioxide, alumina, phosphorus pentoxide, and alkali metal oxide, containing a large number of fine independent pores, having a bulk density of 2.6 g / cm 3 or less, and an average bending strength of 120 MPa or more. It is characterized by a body base.
【０００９】本発明の第２の軽量強化磁器の製造方法
は、珪石、粘土類、長石類、リン酸アルミニウム、酸化
アルミニウム、フッ化アルミニウムから選ばれた原料を
１２００〜１４００℃で焼成し、少なくとも二酸化珪
素、アルミナ、五酸化リン、アルカリ金属酸化物、フッ
素からなり、微細独立気孔を多数含有し、嵩密度が２．
５ｇ／ｃｍ3以下で、平均曲げ強度が１００ＭＰａ以上
である焼成体素地とすることを特徴とする。In a second method for manufacturing a lightweight reinforced porcelain of the present invention, a raw material selected from quartzite, clays, feldspars, aluminum phosphate, aluminum oxide and aluminum fluoride is fired at 1200 to 1400 ° C. It is composed of silicon dioxide, alumina, phosphorus pentoxide, alkali metal oxide, and fluorine, contains many fine independent pores, and has a bulk density of 2.
It is characterized in that the fired body is 5 g / cm 3 or less and has an average bending strength of 100 MPa or more.
【００１０】[0010]
【発明の実施の形態】本発明の第１の軽量強化磁器にお
けるアルミナは、長石、ペタライト、粘土、イングラン
ドカオリン、オクムラセリサイト、リン酸アルミニウ
ム、酸化アルミニウム、水酸化アルミニウム由来のもの
とするとよい。DETAILED DESCRIPTION OF THE INVENTION The alumina in the first lightweight reinforced porcelain of the present invention is preferably derived from feldspar, petalite, clay, england kaolin, okmurasericite, aluminum phosphate, aluminum oxide, and aluminum hydroxide.
【００１１】アルミナ成分は、焼成後にアルミナ結晶と
してそのまま存在して強度の増加に寄与し、またムライ
ト結晶の生成に寄与する。さらに、本発明の軽量強化磁
器は、焼成時にリン酸ガラスが形成されることを特徴と
するが、アルミナ成分はリン酸ガラス中に熔融してリン
酸アルミニウムと共にガラス相形成に寄与し、また、ガ
ラス相の飽和により再結晶化するリン酸アルミニウムの
生成に寄与する。本発明の軽量強化磁器にあっては、こ
のリン酸アルミニウムの再結晶化により、強度が増加す
るものと考えられる。焼成後におけるアルミナ量は、酸
化物基準組成で２５〜６０重量％、好ましくは３０〜５
０重量％、さらに好ましくは３５〜４５重量％含有させ
ると良い。３０重量％未満であると必要な強度が得られ
ず、６０重量％以上であると焼結温度が高くなり、素地
が磁器化しないという問題が生じる。The alumina component exists as it is as an alumina crystal after firing and contributes to an increase in strength and also to the formation of mullite crystal. Further, the lightweight strengthened porcelain of the present invention is characterized in that phosphate glass is formed during firing, but the alumina component is melted in phosphate glass and contributes to the formation of a glass phase together with aluminum phosphate, It contributes to the formation of recrystallized aluminum phosphate by saturation of the glass phase. In the lightweight reinforced porcelain of the present invention, it is considered that the strength is increased by the recrystallization of the aluminum phosphate. The amount of alumina after calcination is 25 to 60% by weight, preferably 30 to 5% by weight on an oxide basis composition.
The content is preferably 0% by weight, more preferably 35 to 45% by weight. If the amount is less than 30% by weight, the required strength cannot be obtained.
【００１２】また、アルミナ源の一部として、粒径１μ
ｍ〜１０μｍの酸化アルミニウム粒子を使用すると焼成
後にアルミナ結晶としてそのまま存在して強度の増加に
寄与するので好ましい。しかしながら、アルミナ成分に
おける酸化アルミニウム粒子の含有量は５重量％〜５０
重量％、好ましくは１０重量％〜４０重量％とするとよ
く、多すぎるとリン酸ガラス相の形成に寄与せず、好ま
しくない。また、軽量強化磁器の酸化物組成における酸
化アルミニウム粒子の含有量は５重量％〜３０重量％、
好ましくは１０重量％〜２０重量％とするとよい。多す
ぎると嵩密度が増大して好ましくない。Further, as a part of the alumina source, a particle size of 1 μm is used.
The use of aluminum oxide particles of m to 10 μm is preferable because they exist as alumina crystals after firing and contribute to an increase in strength. However, the content of aluminum oxide particles in the alumina component is 5% by weight to 50% by weight.
% By weight, preferably from 10% by weight to 40% by weight. If the amount is too large, it does not contribute to the formation of the phosphate glass phase, which is not preferable. The content of aluminum oxide particles in the oxide composition of the lightweight reinforced porcelain is 5% by weight to 30% by weight,
Preferably, the content is 10% by weight to 20% by weight. If it is too large, the bulk density increases, which is not preferable.
【００１３】アルカリ金属酸化物は、長石類、ペタライ
ト等のアルカリ金属含有物由来のものとするとよく、リ
ン酸アルミニウムと共にガラス相形成に寄与する。含有
量は、焼成後の酸化物基準組成で１〜７重量％、好まし
くは、１〜６重量％、さらに好ましくは、１〜５重量％
するように含有させると良い。１重量％未満であると十
分にガラス相が形成されず素地が焼結しなくなり、７重
量％以上であると焼成中の軟化変形が大きくなるという
問題が生じる。The alkali metal oxide is preferably derived from alkali metal-containing substances such as feldspars and petalite, and contributes to the formation of a glass phase together with aluminum phosphate. The content is 1 to 7% by weight, preferably 1 to 6% by weight, more preferably 1 to 5% by weight, based on the oxide-based composition after firing.
It is good to make it contain. When the amount is less than 1% by weight, a glass phase is not sufficiently formed, and the base material does not sinter. When the amount is more than 7% by weight, there is a problem that softening deformation during firing becomes large.
【００１４】軽量強化磁器における素地中に含有される
五酸化リンは、リン酸アルミニム由来のものとするとよ
いが、アルカリ土類金属リン酸塩以外の不水溶性リン酸
塩のものであれば使用できる。アルカリ土類金属リン酸
塩は、リン酸アルミニウムの再結晶化形成を阻害し、気
泡発生機構を阻害するので好ましくなく、また、水溶性
リン酸塩は、軽量強化磁器の製造方法として原料を水と
混合して陶土泥漿とし、水を除去して陶土とされる際に
水と共に除去されるので好ましくない。リン酸アルミニ
ムは焼成に際してアルカリ金属やアルミナ成分と共にリ
ン酸ガラス相の形成に寄与する。そして、ガラス相の飽
和現象によりリン酸アルミニウムが再結晶化し、強度の
増大が生じるものと考えられる。また、同時に、リン酸
ガラス相が形成する際にアルミニウムの配位数やリンの
原子価数が変化し、余分な酸素がガス状として放出さ
れ、ガラス相中に微細気孔が多数形成され、素地の嵩密
度を小さくする作用を示す。焼成後にあって、五酸化リ
ンは酸化物基準組成で５〜２０重量％、好ましくは５〜
１５重量％、さらに好ましくは、５〜１０重量％含有さ
せると良い。５重量％未満であると効果が少なく、２０
重量％以上であるとガラス相が多量に生成し、焼成軟化
変形が大きくなり、また、形成される気孔径が大きくな
って開気孔となり、素地に吸水性が発生するという問題
が生じる。The phosphorus pentoxide contained in the base material of the lightweight reinforced porcelain may be derived from aluminum phosphate, but may be any water-insoluble phosphate other than alkaline earth metal phosphate. it can. Alkaline earth metal phosphates are not preferred because they hinder the recrystallization formation of aluminum phosphate and hinder the bubble generation mechanism.Water-soluble phosphates use water as a raw material for the production of lightweight reinforced porcelain. Is mixed with water to form porcelain clay, which is not preferable because it is removed together with water when water is removed to form porcelain clay. Aluminum phosphate contributes to the formation of a phosphate glass phase together with the alkali metal and alumina components during firing. Then, it is considered that the aluminum phosphate is recrystallized by the saturation phenomenon of the glass phase, and the strength is increased. At the same time, when the phosphate glass phase is formed, the coordination number of aluminum and the valence number of phosphorus change, and excess oxygen is released as a gaseous state, and many fine pores are formed in the glass phase, and Has the effect of reducing the bulk density. After calcination, phosphorus pentoxide is 5 to 20% by weight, preferably 5 to 20% by weight on an oxide basis.
The content is preferably 15% by weight, more preferably 5 to 10% by weight. If the content is less than 5% by weight, the effect is small.
When the content is more than 10% by weight, a large amount of a glass phase is generated, and the softening deformation during firing becomes large. Further, the pore size to be formed becomes large and the pores become open pores.
【００１５】二酸化珪素は、アルミナ源としての長石、
ペタライト、粘土、イングランドカオリン、オクムラセ
リサイトを使用する際に含有されるに至るものである
が、ほとんどが二酸化珪素からなる珪石由来のものとし
てもよい。二酸化珪素は、ガラス相の形成やムライト結
晶の生成に寄与する。二酸化珪素は、焼成後の酸化物基
準組成で２５〜６０重量％、好ましくは３０〜５０重量
％、さらに好ましくは３５〜４５重量％含有させると良
い。２５重量％未満であるとガラス相やムライトの生成
が阻害され、素地が磁器化しにくいという問題があり、
また、６０重量％以上であるとガラス相が生成しすぎ、
焼成物の焼成変形が大きくなるという問題が生じる。Silicon dioxide is feldspar as a source of alumina,
It is contained when using petalite, clay, england kaolin, and okumura sericite, but may be derived from quartzite, which is mostly composed of silicon dioxide. Silicon dioxide contributes to the formation of a glass phase and the formation of mullite crystals. Silicon dioxide may be contained in an oxide-based composition after firing at 25 to 60% by weight, preferably 30 to 50% by weight, and more preferably 35 to 45% by weight. If the content is less than 25% by weight, the formation of a glass phase or mullite is inhibited, and there is a problem that the base material is hard to be porcelain,
On the other hand, when the content is 60% by weight or more, a glass phase is excessively generated,
There is a problem that firing deformation of the fired product becomes large.
【００１６】また、アルカリ土類金属酸化物は、炭酸塩
由来のもの又は天然鉱物及び天然鉱物の不純物由来であ
り、ガラス相形成の補助的な目的として必要に応じて含
有させてもよい。含有量は、焼成後の酸化物基準組成で
０〜２重量％、好ましくは０〜１重量％、さらに好まし
くは０〜０．５重量％含有させると良い。２重量％以上
であると焼成中の軟化変形が大きくなり、また、焼成温
度幅が狭くなる。The alkaline earth metal oxide is derived from a carbonate or from a natural mineral or an impurity of a natural mineral, and may be contained as necessary for the purpose of forming a glass phase. The content is 0 to 2% by weight, preferably 0 to 1% by weight, and more preferably 0 to 0.5% by weight based on the oxide-based composition after firing. If the content is 2% by weight or more, the softening deformation during firing becomes large, and the firing temperature range becomes narrow.
【００１７】また、酸化第二鉄及び酸化チタンは、含有
しないことが好ましいが、天然鉱物に不純物として含有
されるため１重量％未満とすることが好ましい。１重量
％以上含有すると、素地の呈色が灰色または薄い茶色と
なって美的価値を損なうという問題が生じる本発明の軽
量強化磁器の作製に際して使用できる原料について、生
の状態での酸化物組成を表１に、また、１１００℃で焼
成後の状態での酸化物組成を表２に示しておく。なお、
表中、ＡＰは燐酸アルミニウム、Ａｌ2 Ｏ3 は酸化アル
ミニウム粒子、ＡＦはフッ化アルミニウムを示す。Further, ferric oxide and titanium oxide are preferably not contained, but are preferably less than 1% by weight because they are contained as impurities in natural minerals. When the content is 1% by weight or more, the color of the base material becomes gray or light brown, which causes a problem that the aesthetic value is impaired. Table 1 shows the oxide composition after firing at 1100 ° C., and Table 2 shows the oxide composition. In addition,
In the table, AP indicates aluminum phosphate, Al 2 O 3 indicates aluminum oxide particles, and AF indicates aluminum fluoride.
【００１８】[0018]
【表１】 [Table 1]
【００１９】[0019]
【表２】 [Table 2]
【００２０】本発明の第１の軽量強化磁器は、酸化物基
準で二酸化珪素２５〜６０重量％、アルミナ２５〜６０
重量％、五酸化リン５〜２０重量％、アルカリ金属酸化
物１〜７重量％からなる基本構成を有し、必要に応じて
アルカリ土類金属酸化物０〜２重量％を含有するもので
あるが、本発明におけるリン酸ガラス相の形成と共にリ
ン酸アルミニウムの再結晶化現象を発現させるために
は、リン酸アルミニウム１００重量部に対して、アルカ
リ金属酸化物由来の原料をアルカリ金属酸化物換算で５
重量部〜６０重量部、アルミナ由来の原料をアルミナ換
算で１３５重量部〜９１０重量部の割合で混合し、焼成
するとよい。The first lightweight reinforced porcelain of the present invention is composed of 25 to 60% by weight of silicon dioxide and 25 to 60% of alumina based on oxides.
It has a basic composition of 5% by weight, 5 to 20% by weight of phosphorus pentoxide, and 1 to 7% by weight of an alkali metal oxide, and optionally contains 0 to 2% by weight of an alkaline earth metal oxide. However, in order to exhibit the recrystallization phenomenon of aluminum phosphate together with the formation of the phosphate glass phase in the present invention, a raw material derived from an alkali metal oxide is converted to an alkali metal oxide with respect to 100 parts by weight of aluminum phosphate. At 5
It is preferable that the raw material derived from alumina is mixed at a ratio of 135 parts by weight to 910 parts by weight in terms of alumina, and then fired.
【００２１】次に、本発明の第２の軽量強化磁器は、上
述した第１の軽量強化磁器における基本組成において、
更に、微細気孔量を増加させ素地の嵩密度を減少させる
目的として、フッ素成分を含有させるものである。フッ
素成分はフッ化アルミニウム由来のものを原料として使
用するとよく、含有量は焼成後の酸化物基準組成で０〜
６重量％、好ましくは０〜５重量％、さらに好ましくは
０〜４重量％含有させると良い。６重量％以上含有させ
ると素地中に気孔が多量に発生し、十分な強度が得られ
ないという問題が生じる。Next, the second lightweight reinforced porcelain of the present invention has the following basic composition in the first lightweight reinforced porcelain:
Further, a fluorine component is contained for the purpose of increasing the amount of fine pores and decreasing the bulk density of the substrate. The fluorine component is preferably used as a raw material derived from aluminum fluoride, and its content is from 0 to 0 based on the oxide composition after firing.
The content is preferably 6% by weight, preferably 0 to 5% by weight, and more preferably 0 to 4% by weight. If it is contained in an amount of 6% by weight or more, a large amount of pores are generated in the base material, which causes a problem that sufficient strength cannot be obtained.
【００２２】本発明の軽量強化磁器は、原料を水と混合
して陶土泥漿とし、水を除去して陶土とされ、成形され
た後、１２００℃〜１４００℃の焼成温度で焼成され
る。通常の磁器の強度は８０ＭＰａ程度であるのに対し
て、本発明の第１の軽量強化磁器にあっては１２０ＭＰ
ａ〜２４０ＭＰａの強度のものとでき、また、第２の軽
量強化磁器にあっては１００ＭＰａ〜１９０ＭＰａの強
度のものとできる。The lightweight reinforced porcelain of the present invention is obtained by mixing a raw material with water to form a clay clay, removing water to form a clay, and then firing at a firing temperature of 1200 ° C. to 1400 ° C. While the strength of ordinary porcelain is about 80 MPa, the first lightweight reinforced porcelain of the present invention has a strength of 120 MPa.
The strength of the second lightweight reinforced porcelain can be 100 MPa to 190 MPa.
【００２３】また、本発明の軽量強化磁器には多数の独
立微細気泡を有するものとできるが、独立微細気泡とし
ては、その径が１〜２０μｍ、好ましくは１〜１０μ
ｍ、更に好ましくは１〜５μｍとされるとよい。通常の
磁器の嵩密度は２．４ｇ／ｃｍ 3程度であるのに対し
て、第１の軽量強化磁器にあっては２．２〜２．６ｇ／
ｃｍ3の嵩密度のものとでき、また、第２の軽量強化磁
器にあっては２．２〜２．５ｇ／ｃｍ3の嵩密度のもの
とできる。Also, the lightweight reinforced porcelain of the present invention has many independent structures.
It can have standing microbubbles, but it can be closed microbubbles.
The diameter is 1 to 20 μm, preferably 1 to 10 μm
m, more preferably 1 to 5 μm. Normal
Porcelain bulk density is 2.4g / cm ThreeAbout
For the first lightweight reinforced porcelain, 2.2 to 2.6 g /
cmThreeAnd a second lightweight reinforced magnetic material.
2.2-2.5 g / cmThreeOf bulk density
And can be.
【００２４】焼成後の磁器素地は、厚みを１ｍｍ〜４ｍ
ｍ程度とされるが、磁器特有の透光性を有するものとで
きる。The fired porcelain body has a thickness of 1 mm to 4 m.
m, but can have a light transmission characteristic of porcelain.
【００２５】次に、本発明の軽量強化磁器の製造工程を
説明する。 （１） 珪石、長石類及び粘土類又は、リン酸アルミニ
ウム、酸化アルミニウム及び水酸化アルミニウム等の原
料や、フッ化アルミニウム等の添加剤を素地組成となる
ように配合し、ボールミルで平均粒子径が約２μｍとな
るように粉砕及び混合を行って陶土泥漿とし、調製した
泥漿は、フィルタープレスなどで脱水して陶土とする。 （２） 陶土は、ローラーマシン成形などのロクロ成形
や、鋳込み成形または、プレス成形等の成形方法で成形
し、乾燥後その成形体を約８００℃、８時間で素焼きを
行い、それに下絵付けなどの加飾を行った後、施釉して
１２００〜１４００℃、好ましくは１２５０℃〜１３５
０℃、更に好ましくは１２８０℃〜１３３０℃で３時間
〜２４時間で本焼き焼成される。本焼き焼成品は、イン
グレーズや上絵付けの加飾をされて軽量強化磁器製品と
なる。Next, the manufacturing process of the lightweight reinforced porcelain of the present invention will be described. (1) A raw material such as silica stone, feldspar and clay, or aluminum phosphate, aluminum oxide and aluminum hydroxide, and an additive such as aluminum fluoride are blended so as to have a base composition. Crushing and mixing are performed to about 2 μm to obtain clay clay, and the prepared slurry is dewatered by a filter press or the like to obtain clay. (2) Porcelain clay is molded by a molding method such as roller molding, such as roller molding, cast molding, or press molding. After drying, the molded body is unglazed at about 800 ° C. for 8 hours, and the underpainting is performed. After decorating, it is glazed at 1200-1400 ° C, preferably 1250 ° C-135.
The baking is performed at 0 ° C., more preferably at 1280 ° C. to 1330 ° C. for 3 hours to 24 hours. The baked product is a lightweight reinforced porcelain product which is decorated with inglaze and overpainting.
【００２６】また、成形体を１２００℃〜１４００℃の
焼成温度で締め焼きした後、施釉して釉焼を行い軽量強
化磁器製品とすることもできるが、下絵とイングレーズ
や上絵は、加飾を行わない場合もある。Also, after compacting the compact at a sintering temperature of 1200 ° C. to 1400 ° C., it can be glazed and glazed to produce a lightweight reinforced porcelain product. In some cases, decoration is not performed.
【００２７】[0027]
【実施例】以下、実施例により本発明を詳細に説明す
る。 （実施例１〜３４）下記の表３〜表８に記載の割合でそ
れぞれ配合し、ポールミルにて湿式法で粉砕・混合し、
平均粒子径２μｍとした後、フィルターでプレスして陶
土を調製した。調製した陶土を鋳込み成形し、自然乾燥
させた後、ローラーハースキルンを使用して、焼成温度
１３００℃、還元雰囲気中で４．５時間本焼き焼成し
て、本発明の第１及び第２の軽量強化磁器を作製した。The present invention will be described below in detail with reference to examples. (Examples 1 to 34) Compounded at the ratios shown in Tables 3 to 8 below, pulverized and mixed by a wet method using a pole mill,
After having an average particle diameter of 2 μm, the clay was prepared by pressing with a filter. The prepared porcelain clay was cast-molded and air-dried, and thereafter, was calcined at a firing temperature of 1300 ° C. in a reducing atmosphere for 4.5 hours using a roller hearth kiln, thereby obtaining the first and second present inventions. A lightweight reinforced porcelain was made.
【００２８】なお、下記の表３〜表５における蛙目粘土
は土岐口蛙目粘土特級粘土、ペライトはブラジル・ビキ
タ産ペタライト、アルミナはアルミナ粒子（平均粒子径
４μｍ、日本軽金属（株）製「Ａ−３４」）、リン酸ア
ルミニウムはリン酸アルミニウム（太平窯業薬品（株）
製「タイボリーＬ２）、イングランドカオリンはイング
ランドカオリンＳＰ、益田長石は益田長石ＦＧグレー
ド、フッ化アルミニウムはフッ化アルミニウム（森田化
学工業（株）製）である。In Tables 3 to 5 below, the frog eyes clay is a special grade clay of Tokiguchi frog eyes clay, perite is petalite from Bikita, Brazil, and alumina is alumina particles (average particle diameter 4 μm, manufactured by Nippon Light Metal Co., Ltd.) A-34 "), and aluminum phosphate is aluminum phosphate (Taira Ceramics Co., Ltd.)
"Tyvoly L2), England kaolin is England kaolin SP, Masuda feldspar is Masuda feldspar FG grade, and aluminum fluoride is aluminum fluoride (Morita Chemical Industries, Ltd.).
【００２９】[0029]
【表３】 [Table 3]
【００３０】[0030]
【表４】 [Table 4]
【００３１】[0031]
【表５】 [Table 5]
【００３２】得られた軽量強化磁器における酸化物組成
をそれぞれの原料の酸化物組成と配合量から計算して求
めた結果を下記表６〜表１１に示す。Tables 6 to 11 show the results obtained by calculating the oxide composition in the obtained lightweight reinforced porcelain from the oxide composition and the compounding amount of each raw material.
【００３３】また、得られた軽量強化磁器の曲げ強度
（三点曲げ強度）はＪＩＳ Ｒ １６０１−１９９５
（ファインセラミックスの曲げ強さ試験法）に準拠し、
試料寸法を縦７ｍｍ×横５０ｍｍ×高さ５ｍｍとし、
（株）島津製作所製「オートグラフＡＧＳ−５ｋＮＤ」
により測定し、同様に下記表６〜表１１に示す。The bending strength (three-point bending strength) of the obtained lightweight reinforced porcelain is JIS R 1601-1995.
(Bending strength test method for fine ceramics)
The sample size is 7mm long x 50mm wide x 5mm high,
"Autograph AGS-5kND" manufactured by Shimadzu Corporation
And similarly shown in Tables 6 to 11 below.
【００３４】また、吸水率と嵩密度をＡＳＴＭ Ｃ ３
７３−８８（和訳名、陶器製品の吸水率、嵩密度、見掛
け気孔率、見掛け比重の標準試験法）を使用して測定
し、同様に下記表６〜表１１に示す。Further, the water absorption and the bulk density were measured according to ASTM C 3
It is measured using 73-88 (Japanese name, water absorption rate of ceramic products, bulk density, apparent porosity, standard test method of apparent specific gravity), and similarly shown in Tables 6 to 11 below.
【００３５】また、図１に実施例１で作製した軽量強化
磁器断面の粒子構造についての走査型電子顕微鏡（３０
００倍）写真を示す。図１からわかるように、本発明の
軽量強化磁器は、気泡が粒子状に多数点在するものであ
ることが看取される。FIG. 1 shows a scanning electron microscope (30) of the particle structure of the cross section of the lightweight reinforced ceramic produced in Example 1.
(00 ×) A photograph is shown. As can be seen from FIG. 1, it can be seen that the lightweight reinforced porcelain of the present invention has many bubbles scattered in particles.
【００３６】[0036]
【表６】 [Table 6]
【００３７】[0037]
【表７】 [Table 7]
【００３８】[0038]
【表８】 [Table 8]
【００３９】[0039]
【表９】 [Table 9]
【００４０】[0040]
【表１０】 [Table 10]
【００４１】[0041]
【表１１】 [Table 11]
【００４２】[0042]
【発明の効果】本発明の軽量強化磁器は、焼成体素地
が、少なくとも二酸化珪素、アルミナ、五酸化リン、ア
ルカリ金属酸化物からなるか、または、さらに該組成に
加えてフッ素からなるものであり、焼成体素地中には微
細独立気孔が多数形成されることにより、従来の強化磁
器と同等の強度、嵩密度及び高い透光性を兼ね備えたも
のとできる。すなわち、本発明の軽量強化磁器は、従来
の強化磁器と同等以上の平均曲げ強度を有しながら、従
来の強化磁器よりも小さい２．６ｇ／ｃｍ3以下の嵩密
度を持つため、強化磁器製品の重量を軽量化することが
でき、しかも美しい透光性を持った軽量強化磁器とでき
る。According to the lightweight reinforced porcelain of the present invention, the fired body comprises at least silicon dioxide, alumina, phosphorus pentoxide, or an alkali metal oxide, or further comprises fluorine in addition to the composition. Since a large number of fine independent pores are formed in the sintered body, the sintered body can have the same strength, bulk density and high light transmittance as those of the conventional reinforced porcelain. That is, the lightweight reinforced porcelain of the present invention has an average bending strength equal to or higher than that of the conventional reinforced porcelain, but has a bulk density of 2.6 g / cm 3 or less, which is smaller than that of the conventional reinforced porcelain. Can be reduced in weight, and can be made a lightweight reinforced porcelain with beautiful translucency.
【図面の簡単な説明】[Brief description of the drawings]
【図１】 図１は、本発明における実施例１で作製した
軽量強化磁器の断面の粒子構造を示す走査型電子顕微鏡
（３０００倍）写真である。FIG. 1 is a scanning electron microscope (× 3000) photograph showing a grain structure of a cross section of a lightweight reinforced porcelain manufactured in Example 1 of the present invention.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０４Ｂ 38/02 Ｃ０４Ｂ 38/02 Ｚ 35/18 Ｚ Ｆターム(参考） 4G019 JA01 4G030 AA01 AA02 AA03 AA04 AA07 AA08 AA16 AA27 AA36 AA37 AA41 AA58 BA15 BA20 CA09 HA01 HA05 HA15 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C04B 38/02 C04B 38/02 Z 35/18 Z F Term (Reference) 4G019 JA01 4G030 AA01 AA02 AA03 AA04 AA07 AA08 AA16 AA27 AA36 AA37 AA41 AA58 BA15 BA20 CA09 HA01 HA05 HA15
Claims (4)
化リン、アルカリ金属酸化物からなる焼成体素地からな
り、該焼成体素地中には微細独立気孔が多数形成され、
該焼成体素地の嵩密度が２．６ｇ／ｃｍ3 以下で、平均
曲げ強度が１２０ＭＰａ以上であることを特徴とする軽
量強化磁器。1. A fired body comprising at least silicon dioxide, alumina, phosphorus pentoxide, and an alkali metal oxide, wherein a large number of fine independent pores are formed in the fired body.
A lightweight reinforced porcelain, wherein the fired body has a bulk density of 2.6 g / cm 3 or less and an average bending strength of 120 MPa or more.
化リン、アルカリ金属酸化物、フッ素からなる焼成体素
地からなり、該焼成体素地中には微細独立気孔が多数形
成され、該焼成体素地の嵩密度が２．５ｇ／ｃｍ3 以下
で、平均曲げ強度が１００ＭＰａ以上であることを特徴
とする軽量強化磁器。2. A fired body comprising at least silicon dioxide, alumina, phosphorus pentoxide, an alkali metal oxide, and fluorine, wherein a large number of fine independent pores are formed in the fired body, and the volume of the fired body is increased. A lightweight reinforced porcelain having a density of 2.5 g / cm 3 or less and an average bending strength of 100 MPa or more.
ウム、酸化アルミニウムから選ばれた原料を１２００〜
１４００℃で焼成し、少なくとも二酸化珪素、アルミ
ナ、五酸化リン、アルカリ金属酸化物からなり、微細独
立気孔を多数含有し、嵩密度が２．６ｇ／ｃｍ3以下
で、平均曲げ強度が１２０ＭＰａ以上である焼成体素地
とすることを特徴とする軽量強化磁器の製造方法。3. A raw material selected from quartzite, clays, feldspars, aluminum phosphate, and aluminum oxide,
Baking at 1400 ° C., consisting of at least silicon dioxide, alumina, phosphorus pentoxide, and alkali metal oxide, containing many fine independent pores, having a bulk density of 2.6 g / cm 3 or less, and an average bending strength of 120 MPa or more. A method for producing a light-weight reinforced porcelain, wherein the sintered body is a fired body.
ウム、酸化アルミニウム、フッ化アルミニウムから選ば
れた原料を１２００〜１４００℃で焼成し、少なくとも
二酸化珪素、アルミナ、五酸化リン、アルカリ金属酸化
物、フッ素からなり、微細独立気孔を多数含有し、嵩密
度が２．５ｇ／ｃｍ3以下で、平均曲げ強度が１００Ｍ
Ｐａ以上である焼成体素地とすることを特徴とする軽量
強化磁器の製造方法。4. A raw material selected from silica stone, clays, feldspars, aluminum phosphate, aluminum oxide, and aluminum fluoride is fired at 1200 to 1400 ° C., and at least silicon dioxide, alumina, phosphorus pentoxide, alkali metal oxide And a large number of fine independent pores, a bulk density of 2.5 g / cm 3 or less, and an average bending strength of 100 M
A method for producing a lightweight reinforced porcelain, wherein the sintered body is Pa or more.
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|---|---|---|---|
| JP2001056210A JP3926110B2 (en) | 2001-03-01 | 2001-03-01 | Lightweight reinforced porcelain and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001056210A JP3926110B2 (en) | 2001-03-01 | 2001-03-01 | Lightweight reinforced porcelain and manufacturing method thereof |
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| JP3926110B2 JP3926110B2 (en) | 2007-06-06 |
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ID=18916267
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101265946B1 (en) * | 2010-11-26 | 2013-05-21 | 한국세라믹기술원 | Composite of body for lightweight ceramic ware including glass hollow microsphere and manufacturing method of the body for lightweight ceramic ware |
| KR20190029624A (en) * | 2016-06-30 | 2019-03-20 | 이머테크 에스아에스 | Sedimentation for Dry Fine Particle Refractory Compositions |
-
2001
- 2001-03-01 JP JP2001056210A patent/JP3926110B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101265946B1 (en) * | 2010-11-26 | 2013-05-21 | 한국세라믹기술원 | Composite of body for lightweight ceramic ware including glass hollow microsphere and manufacturing method of the body for lightweight ceramic ware |
| KR20190029624A (en) * | 2016-06-30 | 2019-03-20 | 이머테크 에스아에스 | Sedimentation for Dry Fine Particle Refractory Compositions |
| JP2019527184A (en) * | 2016-06-30 | 2019-09-26 | イメルテック ソシエテ パル アクシオン サンプリフィエ | Sintering aids for dry particle refractory compositions |
| KR102403083B1 (en) * | 2016-06-30 | 2022-05-26 | 이머테크 에스아에스 | Sintering Agent for Dry Particulate Refractory Composition |
| JP7136704B2 (en) | 2016-06-30 | 2022-09-13 | イメルテック ソシエテ パル アクシオン サンプリフィエ | Sintering aid for dry particle refractory compositions |
| US11608300B2 (en) | 2016-06-30 | 2023-03-21 | Calderys France S.A.S. | Sintering agent for dry particulate refractory composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3926110B2 (en) | 2007-06-06 |
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