JPH08253378A - Foamed ceramic molded plate - Google Patents
Foamed ceramic molded plateInfo
- Publication number
- JPH08253378A JPH08253378A JP9293095A JP9293095A JPH08253378A JP H08253378 A JPH08253378 A JP H08253378A JP 9293095 A JP9293095 A JP 9293095A JP 9293095 A JP9293095 A JP 9293095A JP H08253378 A JPH08253378 A JP H08253378A
- Authority
- JP
- Japan
- Prior art keywords
- molded plate
- ceramic
- ceramic molded
- foamed
- fine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】 本発明は建造物に使用する外壁
材、床材、天井材、瓦、吸音材、タイル用基材、透水性
舗装材等の建築・土木用部材、その他フィルター、散気
板等に使用される発泡セラミック成形板に関するもので
ある。The present invention relates to building and civil engineering members such as outer wall materials, flooring materials, ceiling materials, roof tiles, sound absorbing materials, tile base materials, and water-permeable pavement materials used for buildings, and other filters and powders. The present invention relates to a foamed ceramic molded plate used for air plates and the like.
【０００２】[0002]
【従来の技術】 従来、発泡セラミック成形板あるいは
多孔質セラミック成形板には次の様なものがあった。即
ち陶石や長石および粘土などの天然鉱物の混合物や酸化
物系セラミック粉体に結合材を添加しこれに無機あるい
は有機系発泡剤を加えて混練成形後１０００℃以上の高
温で焼成するものが知られている。2. Description of the Related Art Conventionally, there have been the following types of foam ceramic molded plates or porous ceramic molded plates. That is, a mixture of natural minerals such as porcelain stone, feldspar, and clay, or an oxide-based ceramic powder to which a binder is added, an inorganic or organic foaming agent is added thereto, and the mixture is kneaded and molded and then fired at a high temperature of 1000 ° C. or higher. Are known.
【０００３】又、セラミック粉体とバインダーを含むス
ラリーに多孔化剤又は発泡剤を添加し、このスラリーを
成形焼成した発泡セラミック板。又無機質微細発泡体や
セラミックの破片等をバインダーによって結合したセラ
ミック多孔成形板などが広く用いられている。A foamed ceramic plate obtained by adding a porosifying agent or a foaming agent to a slurry containing a ceramic powder and a binder and molding and firing the slurry. Further, a ceramic porous molded plate in which an inorganic fine foamed material, ceramic fragments, and the like are bonded by a binder is widely used.
【０００４】しかるに原料に陶石や長石および粘土等天
然鉱物を使用するものは良質のものが次第に減少しその
入手が困難になっている。又多孔化剤を用いる方法は高
気孔率かつ高気孔径を有する発泡セラミック成形板を作
るために多量の多孔化剤を用いねばならず、この多孔化
剤がスラリー中に分散して焼成時に飛散し発泡セラミッ
ク成形板を損傷するため品質の安定が困難である。[0004] However, in the case of using natural minerals such as porcelain stone, feldspar and clay as a raw material, good quality materials are gradually decreasing and it is difficult to obtain them. Further, in the method using a porosifying agent, a large amount of the porosifying agent must be used in order to produce a foamed ceramic molded plate having a high porosity and a high pore diameter, and the porosifying agent is dispersed in the slurry and scattered during firing. It is difficult to stabilize the quality because it damages the foam ceramic molded plate.
【０００５】発泡剤を用いる方法は規則性のある微細中
空洞を設計通り形成することが困難である。無機質微細
発泡体やセラミック破片等をバインダーによって結合し
たものは無機質微細発泡体やセラミック破片等の形状が
不定形であり、これらの表面が滑らかでないためバイン
ダーの吸収が大きくなり品質の安定性に劣り良質の発泡
セラミック成形板にはならないのである。In the method using a foaming agent, it is difficult to form regular fine hollows as designed. Inorganic microfoam or ceramic shards that are bound by a binder have irregular shapes such as inorganic microfoam or ceramic shards, and the surface of these is not smooth, which results in large absorption of binder and poor quality stability. It does not result in a good quality foam ceramic molded plate.
【０００６】以上の様に従来の発泡セラミック成形板あ
るいは多孔質セラミック成形板はセラミック成形板内部
に微細な空洞のあるもの、あるいは微細発泡体の周囲が
単にバインダー等で固結されているものであった。この
ため発泡セラミック成形板中には空気が貫通することが
できないものか又は散気板、フィルターを目的としたも
のでは逆に空気の流通孔が大きなものしかなく、このた
め断熱性は低く火災に対する抵抗力も有していなかった
のである。As described above, the conventional foamed ceramic molded plate or porous ceramic molded plate has a fine void inside the ceramic molded plate, or the periphery of the fine foamed body is simply solidified with a binder or the like. there were. For this reason, in the foamed ceramic molded plate, air cannot penetrate, or in the case of the diffuser plate and the one intended for a filter, conversely, there are only large air circulation holes. He had no resistance.
【０００７】焼成バーミキュライトやシラスバルーンを
水ガラス及び水ガラス硬化剤で加圧成形する技術が特公
平５−５９０６１にあるが、シラスバルーンは圧縮強度
が僅か８０ｋｇｆ／ｃｍ２しかなくしかも重量の２分の
１、容積の３分の１が未発泡物である。このため原料混
練時及び加圧成形時でさらにシラスバルーンは破壊し成
形体を軽量化することはできない。まして発泡中空粒子
同士を点接合し空気の流通するミクロン単位の微細な毛
細管状の空気流通孔を形成せしめることは不可能であ
る。Japanese Patent Publication No. 5-59061 discloses a technique for press-molding baked vermiculite or shirasu balloon with water glass and a water glass curing agent, but shirasu balloon has a compressive strength of only 80 kgf / cm 2 and a weight of 2 minutes. No. 1, 1/3 of the volume is unfoamed. For this reason, the shirasu balloon is further destroyed during the kneading of the raw materials and the pressure molding, and the weight of the molded body cannot be reduced. Furthermore, it is impossible to form point-to-point contact between the foamed hollow particles to form fine capillary-shaped air flow holes in the micron unit through which air flows.
【０００８】焼成バーミキュライトは単なるオープンポ
ァの発泡体であるため単に水ガラスで硬めても軽量化で
きず、発泡中空粒子でないので当然空気を流通するミク
ロン単位の微細な毛細管状の空気流通孔を形成すること
はできない。Since calcined vermiculite is a mere open-pore foam, it cannot be made lighter by simply hardening it with water glass, and since it is not a hollow foamed particle, it naturally forms micron-sized microscopic air flow holes through which air flows. It is not possible.
【０００９】又特公平５−５９０６１で使用している水
ガラス硬化剤は劇物とされている珪弗化ナトリウムであ
るため産業上利用することはできないのである。Further, the water glass curing agent used in JP-B-5-59061 cannot be industrially used because it is a deleterious substance such as sodium fluorosilicate.
【００１０】[0010]
【発明が解決しようとする課題】本発明は上記したよう
な従来の発泡セラミック成形板の問題点を解決したもの
で軽量でしかも強度があり、空気が流通するミクロン単
位の微細な毛細管状の空気流通孔を有することによっ
て、空気は貫通するが水は貫通せず吸水性能がきわめて
高くしかも断熱性能に優れ、火炎に対して裏面の温度上
昇がきわめて低い優れた発泡セラミック成形板を提供す
ることを目的とする。DISCLOSURE OF THE INVENTION The present invention solves the problems of the conventional foamed ceramic molded plate as described above, is lightweight and has strength, and is a microcapillary air having a micron unit through which air flows. By having a flow hole, it is possible to provide an excellent foamed ceramic molded plate that allows air to pass through but does not allow water to pass therethrough, has extremely high water absorption performance and excellent heat insulation performance, and has an extremely low backside temperature rise against a flame. To aim.
【００１１】[0011]
【課題を解決するための手段】上記の課題は発泡セラミ
ック成形板が無数の完全球体微細中空粒子からなり、そ
の微細中空粒子相互が点で連結することによって各微細
中空粒子間にミクロン単位の毛細管状の空気流通孔を有
することにより解決することができるのである。[Means for Solving the Problems] The above-mentioned problem is that the foamed ceramic molded plate is composed of innumerable perfect spherical fine hollow particles, and the fine hollow particles are connected to each other by points, so that microcapillary capillaries are provided between the fine hollow particles. It is possible to solve the problem by having the air flow holes in the shape of a circle.
【００１２】本発明は発泡セラミック成形板中に無数の
ミクロン単位の毛細管状の空気流通孔を保有せしめるた
め、高強度のセラミック微細中空粒子同士をアルカリ金
属珪酸塩水溶液と表面を不溶性あるいは難溶性の反応層
を形成するよう表面処理した３成分系以上のリン酸塩ガ
ラス粉末による硬化組成分によって点接合させるのであ
る。According to the present invention, since a large number of micron-sized capillary air flow holes are retained in the foamed ceramic molded plate, the high-strength ceramic fine hollow particles are insoluble or hardly soluble in the surface of the alkali metal silicate aqueous solution. The point bonding is carried out by the hardened component of the phosphate glass powder of three or more components which has been surface-treated so as to form a reaction layer.
【００１３】即ち圧縮強度６００ｋｇｆ／ｃｍ２以上で
嵩比重０．３〜０．５ｇ／ｃｍ３、融点１５００℃以上
のセラミック微細中空粒子１００重量部とアルカリ金属
珪酸塩水溶液４０〜１８０重量部と表面を不溶性あるい
は難溶性の反応層を形成するよう表面処理した３成分系
以上のリン酸塩ガラス粉末１６〜９０重量部からなる粉
末状組成物を混練し、５０〜５００ｋｇｆ／ｍ２の圧力
で加圧成形することを特徴とする。That is, 100 parts by weight of ceramic fine hollow particles having a compressive strength of 600 kgf / cm 2 or more, a bulk specific gravity of 0.3 to 0.5 g / cm 3 , and a melting point of 1500 ° C. or more, an alkali metal silicate aqueous solution of 40 to 180 parts by weight, and a surface. Was kneaded with a powdery composition consisting of 16 to 90 parts by weight of a phosphate glass powder of three or more components whose surface was treated to form an insoluble or sparingly soluble reaction layer, and the mixture was added at a pressure of 50 to 500 kgf / m 2. It is characterized by being pressure molded.
【００１４】着色発泡セラミック成形体はセラミック微
細中空粒子に予め泥漿状着色無機顔料を噴露し、乾燥さ
せた着色セラミック微細中空粒子を使用することによっ
て着色発泡セラミック成形板とすることができるのであ
る。The colored foamed ceramic molded body can be made into a colored foamed ceramic molded plate by spraying the sludge-like colored inorganic pigment on the ceramic fine hollow particles in advance and using the dried colored ceramic fine hollow particles. .
【００１５】[0015]
【作用】本発明に使用したるセラミック微細中空粒子
は、従来の微細中空発泡体に比較して特に圧縮強度が高
いものであり発泡セラミック成形体製造過程で生ずる高
い応力・剪断力に対して耐え得ることができるものであ
る。さらに加圧成形することによって軽量であるにもか
かわらず緻密な発泡セラミック成形板とすることができ
るのである。The ceramic fine hollow particles used in the present invention have particularly high compressive strength as compared with the conventional fine hollow foams, and can withstand the high stress and shearing force generated in the process of producing the foamed ceramic molded body. Is what you can get. Further, by pressure molding, it is possible to obtain a dense foam ceramic molded plate despite its light weight.
【００１６】微細中空発泡体の圧縮強度とは耐水圧強度
と同意語であり、圧縮強度の測定は、微細中空発泡体を
水中で加圧し水に加えられた圧力が微細中空発泡体に伝
わり微細中空発泡体が破壊する圧力を圧縮強度とするの
である。The compressive strength of the fine hollow foam is synonymous with the hydrostatic strength. The compressive strength is measured by pressurizing the fine hollow foam in water and transmitting the pressure applied to the water to the fine hollow foam. The pressure at which the hollow foam breaks is the compressive strength.
【００１７】優れた性能を示すことのできる発泡セラミ
ック成形板は、攪拌・混練工程が充分でなければなら
ず、均一な製品で品質の良い発泡セラミック成形板には
特に重要である。本発明におけるが如き粉末状組成物に
対して充分な攪拌・混練を行う場合セラミック微細中空
粒子に加わる応力及び剪断力は、約４００ｋｇｆ／ｃｍ
２前後になると言われている。従来の微細中空発泡体に
は、このような高圧に耐え得るものが無かったので、か
かる発泡セラミック成形板として使用し充分な性能が得
られるものは皆無であった。即ち大部分が破壊してしま
うからである。The foamed ceramic molded plate capable of exhibiting excellent performance must have a sufficient stirring / kneading process, and is particularly important for a foamed ceramic molded plate of a uniform product and of good quality. When the powdery composition as in the present invention is sufficiently stirred and kneaded, the stress and shearing force applied to the ceramic fine hollow particles are about 400 kgf / cm.
It is said to be around 2 . Since no conventional fine hollow foam can withstand such a high pressure, none of them can be used as such a foamed ceramic molded plate and have sufficient performance. That is, most of them will be destroyed.
【００１８】次にセラミック微細中空粒子を発泡セラミ
ック成形板に使用する場合重要なことは熱伝導率であ
る。微細中空発泡体はその粒径によるが一般に０．１
（ｋｃａｌ／ｍｈｒ℃）前後であり、充填した微細中空
発泡体の半分が破壊されたものである場合熱伝導率は大
体０．２（ｋｃａｌ／ｍｈｒ℃）に低下する。破壊され
ない完全な微細中空発泡体が使用された場合にのみ優れ
た効果が得られるのである。本発明に使用するセラミッ
ク微細中空粒子は従来の微細中空発泡体であるシラスバ
ルーン、ガラスバルーン、シリカバルーン、フライアッ
シュバルーンなどに比較して格段に圧縮強度が高いもの
であり、発泡セラミック成形板の中空体は１００％完全
なものである。従来の微細中空発泡体の圧縮強度は８０
〜３００ｋｇｆ／ｃｍ２である。Next, when the ceramic fine hollow particles are used in the foamed ceramic molded plate, what is important is thermal conductivity. The fine hollow foam depends on its particle size, but is generally 0.1.
The thermal conductivity is around (kcal / mhr ° C), and when half of the filled fine hollow foam is destroyed, the thermal conductivity is lowered to about 0.2 (kcal / mhr ° C). The excellent effect is obtained only when a perfectly fine hollow foam which is not broken is used. The ceramic fine hollow particles used in the present invention have significantly higher compressive strength than conventional fine hollow foams such as shirasu balloon, glass balloon, silica balloon, fly ash balloon, and the like. The hollow body is 100% complete. The compressive strength of conventional fine hollow foam is 80
˜300 kgf / cm 2 .
【００１９】本発明に使用するセラミック微細中空粒子
の融点は１５００℃以上である。セラミック微細中空粒
子はその材質に起因するのは当然であるが一般的に融点
の高いもの程圧縮強度も高くなる。圧縮強度を６００ｋ
ｇｆ／ｃｍ２以上とするならばその融点は１５００℃以
上にしなければならないのである。The melting point of the ceramic fine hollow particles used in the present invention is 1500 ° C. or higher. Naturally, fine ceramic hollow particles are caused by their material, but generally, the higher the melting point, the higher the compressive strength. Compressive strength of 600k
If it is set to gf / cm 2 or more, its melting point must be 1500 ° C. or more.
【００２０】以上により本発明において使用するセラミ
ック微細中空粒子はシリカ５８〜６２％、アルミナ３８
〜４２％、その他１．５〜２．０％からなるセラミック
組成物を発泡生成せしめたものを使用し、その物性は圧
縮強度７００ｋｇｆ／ｃｍ２、融点１６００℃、嵩比重
０．３〜０．５ｇ／ｃｍ３、熱伝導率０．１（ｋｃａｌ
／ｍｈｒ℃）で完全な中空粒子のみで構成されている。
セラミック微細中空粒子の粒径は、２０〜３５０μｍの
範囲のものを使用し、細目２０〜７５μｍ、中目７５〜
１５０μｍ、荒目１５０〜３５０μｍとして粒度調整に
より混合使用する。嵩比重は粒度の細かいものは重く、
荒いものは軽くなる。このため嵩比重の範囲は０．３〜
０．５ｇ／ｃｍ３となる。As described above, the ceramic fine hollow particles used in the present invention are 58 to 62% silica and 38 alumina.
-42%, other ceramic composition comprising 1.5 to 2.0% using what was allowed foamed product, its properties are compressive strength 700 kgf / cm 2, melting point 1600 ° C., bulk density from 0.3 to 0. 5 g / cm 3 , thermal conductivity 0.1 (kcal
/ Mhr ° C.) and is composed entirely of hollow particles.
The fine ceramic hollow particles have a particle size in the range of 20 to 350 μm, fine 20 to 75 μm, medium 75 to
The particle size is adjusted to 150 μm and the roughness is 150 to 350 μm, and mixed and used. Bulk specific gravity is heavy for fine particles,
Rough things get lighter. Therefore, the range of bulk specific gravity is 0.3 to
It becomes 0.5 g / cm 3 .
【００２１】本発明に使用するアルカリ金属珪酸塩水溶
液は優れた強固なガラス状膜を形成するもので一般式は
Ｍ２Ｏ・ｍＳｉＯ２・ｎＨ２Ｏで表わされ、アルカリ金
属Ｍの種類はナトリウム、カリウム、リチウムなどがあ
り特殊なものとして第４級アンモニウム塩がある。The alkali metal silicate aqueous solution used in the present invention forms an excellent and strong glassy film, and the general formula is represented by M 2 O.mSiO 2 .nH 2 O. There are sodium, potassium, lithium, etc., and there is a special quaternary ammonium salt.
【００２２】アルカリ金属珪酸塩硬化剤はアルカリ金属
珪酸塩水溶液を強固なガラス状の硬化体にするために添
加するものであり珪弗化ナトリウム、珪弗化マグネシウ
ム、塩化アンモニウム等の酸類、酸化亜鉛、アルミナ、
水酸化アルミニウム、セメント、珪酸カルシウム等の多
価金属酸化物、亜鉛、アルミニウム等の多価金属粉末、
リン酸アルミニウム、リン酸マグネシウム、ホウ酸アル
ミニウム、ホウ酸カルシウム等の酸性酸化物の金属塩等
が使用できる。The alkali metal silicate curing agent is added in order to make the alkali metal silicate aqueous solution into a strong glass-like cured body. Acids such as sodium silicate fluoride, magnesium silicate fluoride and ammonium chloride, and zinc oxide. ,alumina,
Aluminum hydroxide, cement, polyvalent metal oxides such as calcium silicate, polyvalent metal powders such as zinc and aluminum,
Metal salts of acidic oxides such as aluminum phosphate, magnesium phosphate, aluminum borate and calcium borate can be used.
【００２３】しかし上記においては珪弗化ナトリウム、
珪弗化マグネシウム等短時間で硬化するが劇薬、毒物と
され環境保全上使用することが出来ない。その他も耐水
性、耐エフロレッセンス性が悪いとか硬化時間が調節で
きないものが多い。However, in the above, sodium silicofluoride,
Although it hardens in a short time such as magnesium fluorosilicate, it cannot be used for environmental protection because it is a powerful drug and a poison. In addition, many have poor water resistance and efflorescence resistance, or the curing time cannot be adjusted.
【００２４】本考案においては、アルカリ金属珪酸塩水
溶液硬化体の最大の欠点とされていた耐水性、耐エフロ
レッセンス性に優れしかも硬化時間を任意に調節可能な
表面を不溶性あるいは難溶性の反応層を形成するよう表
面処理した３成分系以上のリン酸塩ガラス粉末をアルカ
リ金属珪酸塩硬化剤として使用するのである。In the present invention, a reaction layer which is excellent in water resistance and efflorescence resistance, which has been regarded as the greatest drawback of the alkali metal silicate aqueous solution cured product, and whose surface is insoluble or sparingly soluble, can be optionally adjusted in curing time. Thus, a phosphate glass powder of three or more components which has been surface-treated so as to form the above is used as an alkali metal silicate curing agent.
【００２５】セラミック微細中空粒子は細目、中目、荒
目を粒度調整し、１００重量部に対し、アルカリ金属珪
酸塩水溶液を４０〜１８０重量部加える。アルカリ金属
珪酸塩水溶液が４０重量部以下では充分な点接合ができ
ずセラミック微細中空粒子間の固着強度が上がらない。
又１８０重量部以上では発泡セラミック成形板中の溶融
体が多すぎて毛細管状の空気流通孔ができなくなる。The fine ceramic particles have fine, medium, and coarse particle sizes adjusted, and 40 to 180 parts by weight of an aqueous alkali metal silicate solution is added to 100 parts by weight. When the amount of the alkali metal silicate aqueous solution is 40 parts by weight or less, sufficient point bonding cannot be performed and the bonding strength between the ceramic fine hollow particles cannot be increased.
On the other hand, when the amount is 180 parts by weight or more, the amount of the melted material in the foamed ceramic molded plate is too large to form the capillary air flow holes.
【００２６】アルカリ金属珪酸塩水溶液の硬化剤となる
表面を不溶性あるいは難溶性の反応層を形成するように
表面処理した３成分系以上のリン酸塩ガラス粉末は、ア
ルカリ金属珪酸塩水溶液１００重量部に対して４０〜５
０重量部添加する。硬化時間は表面処理の程度によって
３０分から１８０分迄任意に調整することができる。100 parts by weight of an alkali metal silicate aqueous solution is a phosphate glass powder of three or more components whose surface serving as a curing agent for the alkali metal silicate aqueous solution is surface-treated to form an insoluble or sparingly soluble reaction layer. For 40 to 5
Add 0 parts by weight. The curing time can be arbitrarily adjusted from 30 minutes to 180 minutes depending on the degree of surface treatment.
【００２７】発泡セラミック成形板は所定形状の型枠に
粉末状組成物を敷設しプレス等により加圧成形するか、
コンベア上に粉末状組成物を供給しロールによる加圧を
行ない連続的に成形することも可能である。加圧成形後
特に加熱乾燥を行なうことなく約４０〜６０分程度の養
生時間で完全硬化し発泡セラミック成形板が生成され
る。The foamed ceramic molded plate is prepared by laying the powdery composition on a mold having a predetermined shape and press-molding it with a press or the like.
It is also possible to supply the powdery composition onto a conveyor and pressurize it with a roll to continuously form the composition. After the pressure molding, the foaming ceramic molded plate is completely cured by curing for about 40 to 60 minutes without heating and drying.
【００２８】発泡セラミック成形板は、強度の高いセラ
ミック微細中空粒子同士が接合し、この部分がアルカリ
金属珪酸塩水溶液と表面を不溶性あるいは難溶性の反応
層を形成するように表面処理した３成分系以上のリン酸
塩ガラス粉末からなる組成分の硬化体で固着されている
ためきわめて軽量で、発泡セラミック成形板の比重は
０．５〜０．７（ｇ／ｃｍ３）となる。又成形時に５０
〜５００ｋｇｆ／ｍ２で加圧するため発泡セラミック成
形板は緻密になり強度も高くなる。The foamed ceramic molded plate is a three-component system in which high-strength ceramic fine hollow particles are bonded to each other, and this part is surface-treated with an aqueous alkali metal silicate solution to form an insoluble or sparingly soluble reaction layer. It is extremely lightweight because it is fixed by the hardened material of the composition comprising the above phosphate glass powder, and the specific gravity of the foamed ceramic molded plate is 0.5 to 0.7 (g / cm 3 ). Also 50 at the time of molding
Since the pressure is applied at up to 500 kgf / m 2 , the foamed ceramic molded plate becomes dense and has high strength.
【００２９】強度の高いセラミック微細中空粒子は、発
泡セラミック成形板中に完全に中空体の形で存在するこ
とができるため、セラミック微細中空粒子間が点接合に
より固着することによって点接合以外の部分に無数の毛
細管状の空気流通孔が存在することを見出したのであ
る。Since the ceramic fine hollow particles having high strength can be completely present in the foamed ceramic molded plate in the form of a hollow body, the ceramic fine hollow particles are fixed to each other by the point bonding so that the portions other than the point bonding are not bonded. It was found that there are innumerable capillary-shaped air circulation holes.
【００３０】この無数の網の目状に張りめぐらされた毛
細管状の空気流通孔によって僅か１ｋｇｆ／ｃｍ２程度
の低い空気圧でも空気は発泡セラミック成形板の表面か
ら流れる。すなわち表面からの空気は発泡セラミック成
形板の裏面のみならず発泡セラミック板の四周に迄流れ
る。特に高熱空気の場合は表面から大部分が上方に流れ
発泡セラミック成形板の上端から放散する。Due to the innumerable mesh-shaped capillary air circulation holes, air flows from the surface of the foam ceramic molded plate even at a low air pressure of only about 1 kgf / cm 2 . That is, the air from the surface flows not only to the back surface of the foam ceramic molded plate but also to the four circumferences of the foam ceramic plate. Particularly in the case of high-heat air, most of it flows upward from the surface and diffuses from the upper end of the foam ceramic molded plate.
【００３１】このため本発明になる発泡セラミック板表
面に火炎がかかっても火炎による高熱の空気は、発泡セ
ラミック成形板全体に均等に流れ、裏面温度の上昇は少
なく発泡セラミック成形板全体が放熱板として作用する
のである。Therefore, even if a flame is applied to the surface of the foamed ceramic plate of the present invention, high-heat air due to the flame flows evenly throughout the foamed ceramic molded plate, and the rise of the back surface temperature is small, and the entire foamed ceramic molded plate is entirely radiated. Acts as.
【００３２】発泡セラミック成形板を水平に置きその表
面に水を滴下した場合、滴下された水は即座に吸収する
ことができる。即ち発泡セラミック成形板中に網の目の
如く張りめぐらされた毛細管状の空気流通孔内に滴下さ
れた水はただちに流れ吸収されるのである。そしてこの
吸収された水は水平方向に流れ次第に下方に向かって流
れるため裏面に直ちに貫通することはない。水は発泡セ
ラミック成形板の毛細管状空気流通孔に流れ、吸水量は
発泡セラミック成形板重量とほぼ同じ位になる。When the foamed ceramic molded plate is placed horizontally and water is dripped on its surface, the dripped water can be immediately absorbed. That is, the water dripped into the capillary-shaped air flow holes which are stretched like a mesh in the foam ceramic molded plate immediately flows and is absorbed. The absorbed water does not immediately penetrate the back surface because it flows horizontally and gradually flows downward. Water flows into the capillary air circulation holes of the foam ceramic molded plate, and the amount of water absorption is almost the same as the weight of the foam ceramic molded plate.
【００３３】本発明における発泡セラミック成形板は圧
縮強度６００ｋｇｆ／ｃｍ２以上で嵩比重０．３〜０．
５ｇ／ｃｍ３、融点１５００℃以上のセラミック微細中
空粒子とアルカリ金属珪酸塩水溶液と表面を不溶性ある
いは難溶性の反応層を形成するように表面処理した３成
分系以上のリン酸塩ガラス粉末からなる組成分が主要構
成材であるが、この他に水系バインダーと水を添加し必
要に応じて性状向上を図るため分散剤として各種の界面
活性剤、抗菌・抗かび剤、凍結防止剤、安定剤等やその
他の混和剤及び無機質体質顔料などを用いても良い。The foamed ceramic molded plate according to the present invention has a compressive strength of 600 kgf / cm 2 or more and a bulk specific gravity of 0.3 to 0.
Consists of ceramic fine hollow particles with a melting point of 1500 ° C. or more, an alkali metal silicate aqueous solution of 5 g / cm 3 , and a phosphate glass powder of three or more components whose surface is surface-treated to form an insoluble or sparingly soluble reaction layer. The composition is the main constituent material, but in addition to this, various surfactants, antibacterial / antifungal agents, antifreeze agents, stabilizers are added as dispersants to improve the properties as necessary by adding an aqueous binder and water. Etc. and other admixtures and inorganic extender pigments may be used.
【００３４】発泡セラミック成形板を着色せしめるため
セラミック微細中空粒子に噴霧着色する泥漿状着色無機
顔料としては釉薬粉、長石粉、フリット粉、珪酸ジルコ
ニウムに着色顔料および金属酸化物を加え混合したもの
などを水又は溶剤に混合して使用することができる。噴
霧着色はセラミック微細中空粒子全面に行ない乾燥させ
て使用する。Examples of the sludge-like colored inorganic pigment for spray-coloring fine ceramic hollow particles for coloring the foamed ceramic molded plate include glaze powder, feldspar powder, frit powder, zirconium silicate to which a color pigment and a metal oxide are added and mixed. Can be used as a mixture with water or a solvent. Spray coloring is applied to the entire surface of the ceramic fine hollow particles and dried.
【００３５】[0035]
【実施例】以下本発明の実施例について詳述するが本発
明はその要旨を越えない限り実施例に限定されるもので
はない。EXAMPLES Examples of the present invention will be described in detail below, but the present invention is not limited to the examples as long as the gist thereof is not exceeded.
【００３６】実施例 圧縮強度７００ｋｇｆ／ｃｍ２で
嵩比重０．３〜０．５ｇ／ｃｍ３、融点１６００℃、熱
伝導率０．１（ｋｃａｌ／ｍｈｒ℃）で完全な中空粒子
のみで構成されているセラミック微細中空粒子１００重
量部とアルカリ金属珪酸塩水溶液８０重量部、表面を不
溶性あるいは難溶性の反応層を形成するように表面処理
した３成分系以上のリン酸塩ガラス粉末３２重量部に混
和剤として分散剤、安定剤等を１．２重量部を加えて攪
拌しこれに水系バインダー２重量部と水１０重量部を加
えた組成物を充分攪拌・混練した後型枠に打設して板状
とし３００ｋｇｆ／ｍ２の圧力で加圧成形した。加圧成
形後常温で６０分養生し発泡セラミック成形板を作製し
た。Example: Only a completely hollow particle having a compressive strength of 700 kgf / cm 2 , a bulk specific gravity of 0.3 to 0.5 g / cm 3 , a melting point of 1600 ° C. and a thermal conductivity of 0.1 (kcal / mhr ° C.). 100 parts by weight of fine ceramic hollow particles, 80 parts by weight of an aqueous solution of an alkali metal silicate, and 32 parts by weight of phosphate glass powder of three or more components whose surface is surface-treated to form an insoluble or sparingly soluble reaction layer. 1.2 parts by weight of a dispersant, a stabilizer and the like as an admixture were added and stirred, and a composition obtained by adding 2 parts by weight of an aqueous binder and 10 parts by weight of water was sufficiently stirred and kneaded, and then placed in a mold. And plate-shaped at a pressure of 300 kgf / m 2 . After pressure molding, it was cured at room temperature for 60 minutes to produce a foam ceramic molded plate.
【００３７】発泡セラミック成形板の寸法は５００×５
００×３０ｍｍである。セラミック微細中空粒子は細目
１０重量部、中目２０重量部、荒目３０重量部に粒子調
整したものを使用した。水系バインダーとして使用した
のはポリエチレングリコールである。The size of the foam ceramic molded plate is 500 × 5.
It is 00 × 30 mm. The fine ceramic particles used were prepared by adjusting the fine particles to 10 parts by weight, the intermediate particles to 20 parts by weight, and the coarse particles to 30 parts by weight. Polyethylene glycol was used as the aqueous binder.
【００３８】アルカリ金属珪酸塩水溶液は市販のＮａ２
Ｏ ９．４重量％、ＳｉＯ２ ２９．４重量％よりなる
珪酸ソーダ水溶液を用いた。３成分系以上の組成よりな
るリン酸塩ガラス表面処理物からなる硬化剤は３成分系
以上のリン酸塩ガラス粉末を用いその表面をこのリン酸
塩ガラス粉末と反応して不溶性あるいは難溶性の層を形
成するように表面処理したものを使用した（Ｃ社製）。
リン酸塩ガラス粉末は無水リン酸（Ｐ２Ｏ５）とアルミ
ナ（Ａｌ２Ｏ３）、酸化亜鉛（ＺｎＯ）、酸化カルシウ
ム（ＣａＯ）等の金属酸化物等から製造されたものであ
る。The alkali metal silicate aqueous solution is commercially available Na 2
An aqueous sodium silicate solution containing 9.4 wt% O and 29.4 wt% SiO 2 was used. As the curing agent composed of a phosphate glass surface-treated product having a composition of three or more components, a phosphate glass powder of three or more components is used, and the surface thereof is insoluble or hardly soluble by reacting with the phosphate glass powder. What was surface-treated so as to form a layer was used (manufactured by Company C).
The phosphate glass powder is manufactured from phosphoric anhydride (P 2 O 5 ), alumina (Al 2 O 3 ), zinc oxide (ZnO), calcium oxide (CaO) and other metal oxides.
【００３９】 比較例１ 比較例１ 実施例で使用したセラミック微細中空粒子の
代りにシラスバルーン（Ｓ社製）を用いた。他は実施例
と同じである。Comparative Example 1 Comparative Example 1 Shirasu balloon (manufactured by S Co.) was used instead of the ceramic fine hollow particles used in the examples. Others are the same as the embodiment.
【００４０】比較例２ 実施例で使用したセラミック微
細中空粒子の代りにガラスバルーン（Ａ社製）を用い
た。他は実施例と同じである。Comparative Example 2 Instead of the ceramic fine hollow particles used in the examples, glass balloons (manufactured by A company) were used. Others are the same as the embodiment.
【００４１】実施例及び比較例１及び２の各種物性比較
を表１にまとめた。作製した各供試体はいずれも５００
×５００×３０ｍｍである。本発明になる発泡セラミッ
ク成形板の比重はセラミック微細中空粒子の破壊が全く
ないため０．６０でありきわめて軽量である。シラスバ
ルーンはもともと完全中空発泡体が重量で３分の１、容
積で２分の１でありその上攪拌・混練及び加圧成形によ
って大部分破壊したため比重は１．３８と非常に重くな
る。ガラスバルーンも約６０％前後破壊したため重くな
ったと言える。Table 1 shows a comparison of various physical properties of Examples and Comparative Examples 1 and 2. Each of the produced specimens is 500
It is × 500 × 30 mm. The specific gravity of the foamed ceramic molded plate according to the present invention is 0.60 because the fine ceramic hollow particles are not broken at all, which is extremely lightweight. Originally, the hollow hollow foam had a one-third weight and one-half volume, and the specific gravity was 1.38, which was very heavy because most of it was destroyed by stirring, kneading, and pressure molding. It can be said that the glass balloon was destroyed by about 60% and became heavier.
【００４２】[0042]
【表１】 [Table 1]
【００４３】圧縮強度は実施例が最も強く、比較例はバ
ルーンの破壊により硬化組成分による結合が完全に行な
われず充分な強度を発現することができていない。発泡
セラミック成形板表面から裏面に向けて空気圧１ｋｇｆ
／ｃｍ２で空気を当てた場合表面から裏面へ空気が透過
するかどうかを試験した結果、透過したのは実施例のみ
であり、比較例はバルーンの破壊によって内部にミクロ
ン単位の微細な毛細管状の空気流通孔が生成されず空気
が透過することができなかった。The compressive strength is the highest in the example, and in the comparative example, the balloons are broken so that the bonding due to the hardened components is not completely performed and the sufficient strength cannot be exhibited. Air pressure 1kgf from front to back of ceramic foam plate
As a result of testing whether or not air permeates from the front surface to the back surface when air is applied at / cm 2 , only the examples are permeated, and the comparative examples are microcapillary in the micron unit inside due to the destruction of the balloon. No air flow holes were generated and the air could not permeate.
【００４４】各供試体の吸水率および表面から裏面への
水の透過性試験結果を対重量比で示した。実施例は発泡
セラミック成形板重量の１２０％迄吸水し１１７％吸水
時に表面からの水が裏面に滲み出ることを示している。
比較例はいずれも成形体中にミクロン単位の微細な毛細
管状の空気流通孔が生成されておらず発泡体として不完
全なものであるため水の透過性は不可であった。The water absorption rate of each test piece and the result of the water permeability test from the front surface to the back surface are shown by weight ratio. The examples show that up to 120% of the weight of the foamed ceramic molded plate is absorbed, and at the time of absorbing 117% of the weight, water from the front surface oozes out to the back surface.
In each of the comparative examples, water permeability was not possible because fine capillary-shaped air flow pores in the micron unit were not formed in the molded product and it was an incomplete foam.
【００４５】各供試体にガスバーナーの火炎先端を当て
て裏面の温度を測定した。ガスバーナーの先端は約１２
００℃で火炎照射時間は１０分である。実施例の場合火
炎により上昇した空気は発泡セラミック成形板全体に広
がり裏面の温度上昇はきわめて低い。The flame front of a gas burner was applied to each sample, and the temperature of the back surface was measured. The tip of the gas burner is about 12
Flame irradiation time at 00 ° C. is 10 minutes. In the case of the embodiment, the air raised by the flame spreads over the entire foam ceramic molded plate, and the temperature rise on the back surface is extremely low.
【００４６】[0046]
【発明の効果】以上述べた如く本発明に係る発泡セラミ
ック成形板は、高強度のセラミック微細中空粒子を使用
することによって軽量にしてしかも強度が高く空気を流
通するミクロン単位の微細な毛細管状の空気流通孔が網
の目の如くに張りめぐらされる。発泡セラミック成形板
は空気は貫通するが水は貫通せず吸水性能がきわめて高
く、吸水した水は外部に滲み出ることはなく自然に蒸発
散する。このため発泡セラミック成形板を水平に置いて
表面から水を滴下しても裏面から発泡セラミック成形板
の飽和吸水量迄垂れ落ちることはない。又断熱性能に優
れ火炎に対して裏面の温度上昇がきわめて低い優れた発
泡セラミック成形板であり各種建築部材はもとよりフィ
ルター、散気板等にも好適に使用できるものである。As described above, the foamed ceramic molded plate according to the present invention is made of fine micro-capillary particles of micron unit which are made lightweight by using high strength ceramic fine hollow particles and have high strength and allow air to flow therethrough. The air circulation holes are stretched like a mesh. The foamed ceramic molded plate penetrates air but does not penetrate water and has a very high water absorbing performance, and the absorbed water does not seep outside and evaporates naturally. Therefore, even if the foam ceramic molded plate is placed horizontally and water is dropped from the front surface, the saturated water absorption amount of the foam ceramic molded plate does not drip from the back surface. Further, it is an excellent foamed ceramic molded plate which has excellent heat insulating properties and has a very low temperature rise on the back side against a flame, and can be suitably used not only for various building members but also for filters, diffuser plates and the like.
Claims (3)
〜４２％、その他１．５〜２．０％からなる組成物を発
泡生成して圧縮強度６００ｋｇｆ／ｃｍ２以上、嵩比重
０．３〜０．５ｇ／ｃｍ３、融点１５００℃以上有する
セラミック微細中空粒子を１００重量部にアルカリ金属
珪酸塩水溶液４０〜１８０重量部と表面を不溶性あるい
は難溶性の反応層を形成するように表面処理した３成分
系以上のリン酸塩ガラス粉末１６〜９０重量部からなる
粉末状組成物を５０〜５００ｋｇｆ／ｍ２の圧力で加圧
成形することを特徴とする発泡セラミック成形板。1. SiO 2 58 to 62%, Al 2 O 3 38
-42%, and other composition of 1.5-2.0% is foamed to form a fine ceramic having a compressive strength of 600 kgf / cm 2 or more, a bulk specific gravity of 0.3 to 0.5 g / cm 3 , and a melting point of 1500 ° C. or more. 16 to 90 parts by weight of three or more component phosphate glass powders in which 100 to parts by weight of hollow particles are treated with 40 to 180 parts by weight of an alkali metal silicate aqueous solution and the surface is surface-treated so as to form an insoluble or sparingly soluble reaction layer. A foamed ceramic molded plate, which is obtained by press-molding a powdery composition comprising the composition at a pressure of 50 to 500 kgf / m 2 .
空気を流通するミクロン単位の微細な毛細管状の空気流
通孔を形成することを特徴とする請求項１記載の発泡セ
ラミック成形板。2. The foamed ceramic molded plate according to claim 1, wherein the ceramic fine hollow particles are point-joined to each other to form micron-sized fine capillary-shaped air flow holes through which air flows.
に泥漿状着色無機顔料を噴霧して乾燥させた着色セラミ
ック微細中空粒子を使用することにより着色発泡セラミ
ック成形板とすることを特徴とする請求項１記載の発泡
セラミック成形板。3. A colored foamed ceramic molded plate is obtained by using the colored ceramic fine hollow particles obtained by spraying and drying the sludge-like colored inorganic pigment on the ceramic fine hollow particles according to claim 1. Item 1. A foamed ceramic molded plate according to item 1.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9293095A JPH08253378A (en) | 1995-03-15 | 1995-03-15 | Foamed ceramic molded plate |
| CA 2171038 CA2171038C (en) | 1995-03-15 | 1996-03-05 | Expanded ceramic molded plate |
| AU48022/96A AU681550B2 (en) | 1995-03-15 | 1996-03-11 | Expanded ceramic molded plate |
| US08/613,311 US5679452A (en) | 1995-03-15 | 1996-03-11 | Expanded ceramic molded plate |
| DE1996110001 DE19610001A1 (en) | 1995-03-15 | 1996-03-14 | Press-moulded expanded ceramic plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9293095A JPH08253378A (en) | 1995-03-15 | 1995-03-15 | Foamed ceramic molded plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08253378A true JPH08253378A (en) | 1996-10-01 |
Family
ID=14068221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9293095A Pending JPH08253378A (en) | 1995-03-15 | 1995-03-15 | Foamed ceramic molded plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08253378A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008126760A1 (en) * | 2007-04-10 | 2008-10-23 | Inax Corporation | Humidity-controlling building material, and method for production thereof |
-
1995
- 1995-03-15 JP JP9293095A patent/JPH08253378A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008126760A1 (en) * | 2007-04-10 | 2008-10-23 | Inax Corporation | Humidity-controlling building material, and method for production thereof |
| JPWO2008126760A1 (en) * | 2007-04-10 | 2010-07-22 | 株式会社Inax | Humidity control building material and manufacturing method thereof |
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