JPH1149583A - Porous ceramic product and its production - Google Patents
Porous ceramic product and its productionInfo
- Publication number
- JPH1149583A JPH1149583A JP20509997A JP20509997A JPH1149583A JP H1149583 A JPH1149583 A JP H1149583A JP 20509997 A JP20509997 A JP 20509997A JP 20509997 A JP20509997 A JP 20509997A JP H1149583 A JPH1149583 A JP H1149583A
- Authority
- JP
- Japan
- Prior art keywords
- porous ceramic
- ceramic product
- product according
- coarse particles
- producing
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/22—Glass ; Devitrified glass
- C04B14/24—Glass ; Devitrified glass porous, e.g. foamed glass
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0045—Polymers chosen for their physico-chemical characteristics
- C04B2103/0051—Water-absorbing polymers, hydrophilic polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は多孔質セラミック製
品に関するものであり、特に非常に空隙率の高くかつ強
度の大きな多孔質セラミック製品及びその製造方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a porous ceramic product, and more particularly to a porous ceramic product having a very high porosity and a high strength, and a method for producing the same.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来の
多孔質セラミック製品の製造法には、発泡性未焼成セラ
ミック粉体に結合材を混合し、成形後、焼成する方法
や、主原料として黒曜石やシラス等の火山噴出物を用
い、これらに粘土や結合材を混合して、成形後、焼成す
る方法等がある。しかしながら、それら方法により得ら
れた多孔質セラミック製品は、嵩比重が十分に低くな
く、かつ空隙率が十分に多くないものであった。2. Description of the Related Art Conventional methods for producing a porous ceramic product include a method of mixing a binder with foamable unfired ceramic powder, molding the mixture, and firing the mixture. There is a method of using a volcanic ejecta such as obsidian or shirasu, mixing a clay or a binder with them, molding, and firing. However, the porous ceramic products obtained by those methods are not sufficiently low in bulk specific gravity and not sufficiently high in porosity.
【０００３】[0003]
【課題を解決するための手段】本発明者は上記課題を解
決すべく鋭意研究の結果、火山噴出物として多量に産出
する黒曜石、シラス等の加熱発泡球状体粗粒子、すなわ
ち火山噴出物発泡球状粗粒子、例えばパーライトを主原
料とし、あるいは人工発泡ガラス質球状粗粒子、例えば
スラグの加熱発泡球状粗粒子を主原料とし、これに吸水
膨潤した高吸水性ポリマーを均質に含有する未焼成セラ
ミック粉体を含む結合材とが混合された混合物を成形
し、乾燥した後、７５０〜１２００℃で焼成することに
よって、軽量化された多孔質セラミックを提供すること
に成功した。すなわち本発明は、下記構成の多孔質セラ
ミック製品及びその製造方法である。 （１）多数のガラス質中空球状粗粒子の間を多孔質セラ
ミックマトリックス焼結体が結合充填してなり、かつ前
記多孔質セラミックマトリックス焼結体中の多孔質空隙
部が吸水膨潤した高吸水性ポリマーの消失孔であること
を特徴とする多孔質セラミック製品。 （２）粒径０．５〜５．０ｍｍのガラス質中空球状粗粒
子１００重量部に対して、多孔質セラミックマトリック
ス焼結体１０〜５００重量部が均質混在した焼結体であ
り、かつ前記多孔質セラミックマトリックス焼結体中の
多孔質空隙部が吸水膨潤した高吸水性ポリマーの消失孔
であることを特徴とする多孔質セラミック製品。 （３）ガラス質中空球状粗粒子が、天然ガラス質発泡体
粗粒子であることを特徴とする（１）項又は（２）項記
載の多孔質セラミック製品。 （４）ガラス質中空球状粗粒子が、人工発泡ガラス質粗
粒子であることを特徴とする（１）項又は（２）項記載
の多孔質セラミック製品。 （５）多孔質セラミック製品の物理特性が、嵩比重０．
２〜１．５、圧縮強度：５．０〜８０ｋｇｆ／ｃｍ２、
曲げ強度：０．５〜８．０ｋｇｆ／ｃｍ２であることを
特徴とする（１）項ないし（４）項のいずれか１項に記
載の多孔質セラミック製品。Means for Solving the Problems The present inventor has conducted intensive studies to solve the above-mentioned problems, and as a result, as a result of heated research, obsidian, shirasu and other heated foamed spherical coarse particles produced in large quantities as volcanic ejecta, Unfired ceramic powder containing coarse particles, for example, pearlite as a main raw material, or artificially foamed glassy spherical coarse particles, for example, heat-expanded spherical coarse particles of slag as a main raw material, and uniformly containing a water-swollen superabsorbent polymer. A mixture in which a binder including a body was mixed was formed, dried, and then fired at 750 to 1200 ° C., thereby successfully providing a porous ceramic with reduced weight. That is, the present invention is a porous ceramic product having the following configuration and a method for producing the same. (1) A high water absorption in which a porous ceramic matrix sintered body is bonded and filled between a large number of glassy hollow spherical coarse particles, and a porous void portion in the porous ceramic matrix sintered body absorbs and swells. A porous ceramic product characterized by being a disappearing pore of a polymer. (2) A sintered body in which 10 to 500 parts by weight of a porous ceramic matrix sintered body is homogeneously mixed with 100 parts by weight of glassy hollow spherical coarse particles having a particle size of 0.5 to 5.0 mm, and A porous ceramic product, characterized in that the porous voids in the porous ceramic matrix sintered body are pores for disappearance of the superabsorbent polymer swollen by water. (3) The porous ceramic product according to (1) or (2), wherein the vitreous hollow spherical coarse particles are natural vitreous foam coarse particles. (4) The porous ceramic product according to (1) or (2), wherein the vitreous hollow spherical coarse particles are artificial foamed vitreous coarse particles. (5) The physical properties of the porous ceramic product have a bulk specific gravity of 0.1.
2 to 1.5, compressive strength: 5.0 to 80 kgf / cm 2 ,
Flexural strength: 0.5 to 8.0 kgf / cm 2 , wherein the porous ceramic product according to any one of the above items (1) to (4).
【０００４】（６）粒径０．５〜５．０ｍｍのガラス質
中空球状粗粒子１００重量部に対して、吸水膨潤した高
吸水性ポリマー３０〜７０重量％を均質に含有する未焼
成セラミック粉体を含む結合材５０〜８００重量部とが
混合された混合物を成形し、乾燥した後、７５０〜１２
００℃で焼成することを特徴とする多孔質セラミック製
品の製造方法。 （７）吸水膨潤した高吸水性ポリマーの粒径が１０〜２
０００μｍであることを特徴とする（６）項記載の多孔
質セラミック製品の製造方法。 （８）結合材中に占める未焼成セラミック粉体が４０〜
７０重量％であることを特徴とする（６）項又は（７）
項記載の多孔質セラミック製品の製造方法。 （９）結合材が、ガラス質粉体を含むことを特徴とする
（６）項ないし（８）項のいずれか１項に記載の多孔質
セラミック製品の製造方法。 （１０）結合材が、粘土鉱物を含むことを特徴とする
（６）項ないし（９）項のいずれか１項に記載の多孔質
セラミック製品の製造方法。 （１１）結合材が、無機結合材を含むことを特徴とする
（６）項〜（１０）項のいずれか１項に記載の多孔質セ
ラミック製品の製造方法。 （１２）結合材が、有機物細粒を含むことを特徴とする
（６）項〜（１１）項のいずれか１項に記載の多孔質セ
ラミック製品の製造方法。 （１３）結合材が、有機質結合材を含むことを特徴とす
る（６）項〜（１２）項のいずれか１項に記載の多孔質
セラミック製品の製造方法。(6) Unfired ceramic powder uniformly containing 30 to 70% by weight of a water-absorbing and swollen superabsorbent polymer per 100 parts by weight of glassy hollow spherical coarse particles having a particle size of 0.5 to 5.0 mm. A mixture in which 50 to 800 parts by weight of a binder including a body is mixed is formed and dried, and then 750 to 12
A method for producing a porous ceramic product, characterized by firing at 00 ° C. (7) The particle size of the superabsorbent polymer swollen by water absorption is 10 to 2
(6) The method for producing a porous ceramic product according to (6), wherein the thickness is 000 μm. (8) Unfired ceramic powder occupying 40 to 40% in the binder
Item (6) or (7), which is 70% by weight.
The method for producing a porous ceramic product according to the above item. (9) The method for producing a porous ceramic product according to any one of the above items (6) to (8), wherein the binder contains a vitreous powder. (10) The method for producing a porous ceramic product according to any one of (6) to (9), wherein the binder contains a clay mineral. (11) The method for producing a porous ceramic product according to any one of (6) to (10), wherein the binder includes an inorganic binder. (12) The method for producing a porous ceramic product according to any one of (6) to (11), wherein the binder contains organic fine particles. (13) The method for producing a porous ceramic product according to any one of (6) to (12), wherein the binder includes an organic binder.
【０００５】[0005]
【発明の実施の形態】本願発明の実施の形態を以下に説
明する。まず、本願発明で主原料として用いらるガラス
質中空球状粗粒子としては、例えば天然ガラス質発泡粗
粒子である黒曜石細片や真珠岩細片等の高温加熱による
発泡粗粒子であるパーライト、人工ガラス質粗粒子であ
る水砕スラグ細片やシリカ細片の高温加熱発泡粗粒子で
あるスラグバルーンやシリカバルーン等が挙げられ、高
温加熱発泡ガラス質中空球状粗粒子の粒径は０．５〜
５．０ｍｍであるものが好ましい。その嵩密度は０．１
／ｃｍ３〜１．０／ｃｍ３のものが好ましい。Embodiments of the present invention will be described below. First, the vitreous hollow spherical coarse particles used as the main raw material in the present invention include, for example, pearlite, artificial coarse expanded particles obtained by heating at a high temperature such as obsidian fine particles and perlite fine particles, which are natural vitreous expanded coarse particles. Examples include slag balloons and silica balloons that are high-temperature heat-expanded coarse particles of granulated slag fine particles and silica fine particles that are vitreous coarse particles, and the particle diameter of the high-temperature heat-expanded vitreous hollow spherical coarse particles is 0.5 to
Those having a diameter of 5.0 mm are preferred. Its bulk density is 0.1
/ Cm 3 to 1.0 / cm 3 are preferable.
【０００６】本願発明は、多くのガラス質中空球状粗粒
子間に多孔質セラミックマトリックス焼結体が焼結充填
された状態の多孔質セラミック製品を提供するものであ
るが、その製造においては、まず成形性を付与させるた
め、ガラス質中空球状粗粒子と吸水膨潤された高吸水性
ポリマー粒子を分散混合させた未焼成セラミックマトリ
ックス生成材料（結合材）との均質混合物を加水あるい
は可塑化材を添加混合して、生地となし、それを一定形
状に成形し、乾燥した後、焼成することが好ましい。前
記未焼成セラミックマトリックス生成材料中に混有させ
る吸水膨潤した高吸水性ポリマー粒子は、１００℃前後
の加熱により大量の膨潤水が容易に蒸散、消失するもの
であり、高吸水性ポリマーとしては、具体的には、デン
プン系（デンプン−アクリロニトリルグラフト重合体加
水分解物等）、セルロース系（セルロース−アクリロニ
トリルグラフト重合体）、タンパク質（コラーゲン等）
多糖類系（ピアルロン酸等）等の天然高分子類、ポリピ
ニルアルコール系（ポリピニルアルコール架橋重合体
等）、アクリル系（ポリアクリル酸ナトリウム架橋体
等）、付加重合体（無水マレイン酸系共重合体等）、ポ
リエーテル系（ポリエチレングリコール・ジアクリレー
ト架橋重合体等）、縮合系ポリマー（エステル系ポリマ
ー等）等の合成高分子類が挙げられるが、アクリル酸ナ
トリウム系重合体の架橋物が工業的に生産が容易で低コ
ストのため好ましい。The present invention provides a porous ceramic product in a state in which a porous ceramic matrix sintered body is sintered and filled between many glassy hollow spherical coarse particles. In order to impart moldability, a homogeneous mixture of glassy hollow spherical coarse particles and a non-fired ceramic matrix forming material (binder) in which water-absorbing and swollen superabsorbent polymer particles are dispersed and mixed, and a water or plasticizer is added. It is preferable that the mixture is mixed to form a dough, formed into a predetermined shape, dried, and fired. The superabsorbent polymer particles that have been subjected to water absorption and swelling to be mixed in the unfired ceramic matrix forming material are those in which a large amount of swelling water easily evaporates and disappears by heating at about 100 ° C. Specifically, starch-based (hydrolyzate of starch-acrylonitrile graft polymer), cellulose-based (cellulose-acrylonitrile graft polymer), protein (collagen, etc.)
Natural polymers such as polysaccharides (pialuronic acid, etc.), polypinyl alcohols (crosslinked polymers of polypinyl alcohol, etc.), acrylics (crosslinked products of sodium polyacrylate, etc.), addition polymers (maleic anhydride, etc.) Synthetic polymers such as polyether-based copolymers), polyether-based polymers (such as crosslinked polyethylene glycol / diacrylate polymers), and condensation polymers (such as ester-based polymers). The product is preferable because it is industrially easy to produce and low in cost.
【０００７】また、焼成によりセラミックスマトリック
スを生成する未焼成セラミックとしては、例えば長石、
陶土、粘土鉱物等のケイ酸アルミニウム系無機材料が挙
げられ、それらには焼結剤としてのアルカリ金属・アル
カリ土類金属ケイ酸塩、ガラス粉、釉薬粉等を添加する
ことが好ましく、さらに無機系粘結材の水溶性アルカリ
ケイ酸塩（水ガラス）や有機質粘結材のコーンスター
チ、ＣＭＣ等を添加したものが好ましい。なお、成形の
ための可塑性付与材としては、通常有機系のもの、例え
ば前記粘結材と同じコーンスターチ、ＣＭＣやアルギン
酸ソーダー、ＰＶＡ、ポリアクリル系エマルジン、多価
アルコール系ワックス等を添加使用することができる。
なお、水溶性アルカリケイ酸塩（水ガラス）は成形用及
び焼結用に共用される可塑性付与材兼焼結剤として好ま
しいものである。[0007] Unfired ceramics that produce a ceramic matrix by firing include, for example, feldspar,
Aluminum silicate-based inorganic materials such as clay and clay minerals, and the like, to which alkali metal or alkaline earth metal silicate as a sintering agent, glass powder, glaze powder and the like are preferably added, It is preferable to add a water-soluble alkali silicate (water glass) as a base binder or corn starch, CMC or the like as an organic binder. In addition, as a plasticity-imparting material for molding, usually, an organic material such as corn starch, CMC or sodium alginate, PVA, polyacrylic emulzine, a polyhydric alcohol-based wax, etc., which are the same as the binder, is used. Can be.
In addition, a water-soluble alkali silicate (water glass) is preferable as a plasticizing agent and a sintering agent commonly used for molding and sintering.
【０００８】本願発明においては、さらに耐熱性補強材
を加配することもできる。このような耐熱性補強材とし
ては、例えば鉱滓、シャモット等が採用でき、これら耐
熱性補強材を加配し、焼結して得られた多孔質セラミッ
ク製品は、高い機械的強度及び耐熱性を備えたものとな
る。さらに、本発明の多孔質セラミック製品中の多孔空
隙を生成させるため、未焼成セラミック粉体を含む結合
材中に有機物細粒を混有させることもできる。 有機質
微細物としては、高温加熱により揮発焼失するもので、
例えば木材・竹材・穀類等の植物微細物、脂肪微細物、
プランクトン等の動物微細物、ポリスチロール、ポリエ
チレン、ポリプロピレン等の合成樹脂微細物が挙げられ
る。さらに、有機質短繊維、例えばナイロン短繊維、ポ
リプロピレン短繊維等も使用できる。米細粒、うどん細
粒、籾がら粉等も使用できる。それら、有機物細粒部は
焼成時に酸化焼失して焼失孔となる。In the present invention, a heat-resistant reinforcing material can be further provided. As such a heat-resistant reinforcing material, for example, slag, chamotte, etc. can be adopted, and a porous ceramic product obtained by disposing and sintering these heat-resistant reinforcing materials has high mechanical strength and heat resistance. It will be. Further, in order to generate porous voids in the porous ceramic product of the present invention, organic fine particles can be mixed in a binder containing unfired ceramic powder. As organic fine matter, it is volatile and burned off by heating at high temperature.
For example, fine plant matter such as wood, bamboo and cereals, fine fat matter,
Examples include animal fines such as plankton and synthetic resin fines such as polystyrene, polyethylene, and polypropylene. Further, organic short fibers such as nylon short fibers and polypropylene short fibers can also be used. Rice fines, udon fines, chaff, etc. can also be used. These organic fine particles are oxidized and burned out during firing, resulting in burned-out holes.
【０００９】上記のようなガラス質中空球状粗粒子に、
フライアッシュ及び吸水膨潤された高吸水性ポリマー粒
子を含む結合材を均質に混合した混合物を所要形状に成
形した後、乾燥し、７５０〜１２００℃程度の焼成温度
域において焼結させることにより、多孔質セラミック製
品を得ることができる。[0009] The vitreous hollow spherical coarse particles as described above,
After forming a mixture obtained by homogeneously mixing a binder containing fly ash and a water-absorbing and swollen superabsorbent polymer particle into a required shape, drying and sintering in a firing temperature range of about 750 to 1200 ° C. Quality ceramic products can be obtained.
【００１０】上記発明のセラミックス製品の配合組成に
おいて、ガラス質中空球状粗粒子を用いるのは、該粗粒
子は黒曜石、真珠岩等の天然ガラス等を原料にして多量
に生産され価格も安価で、内部が中空で軽量であり、か
つ一定の強度も備えているため、これを主要構成材料と
することにより製品の軽量化及びある程度の強度向上に
寄与するためであり、さらにそれがガラス質であるか
ら、その周りに接触充填されるセラミックマトリックス
との焼結接合が容易であり、その結果焼成製品はガラス
質球状粗粒子表層とセラミックマトリックスが強固に結
合して、全体強度が向上するのである。そして、主原料
としてガラス質中空球状粗粒子と吸水膨潤された高吸水
性ポリマー粒子及び未焼成セラミックセラミックを含む
結合材を使用したことによりに、製品の空隙率を多大に
確保することができるのである。なお、該セラミック製
品中には、素材中の各ガラス質中空球状粗粒子同士の接
触部分（以下、第１点接触部分という）間に形成される
大きな空隙部（以下、第１空隙部という）、及び第１空
隙部内に充填されたセラミックマトリックス内の吸水膨
潤された高吸水性ポリマー粒子の消失孔である空隙部
（以下、第２空隙部という）の２種の多量の空隙部が存
在するため、全体の空隙率が高く、かつ第１，第２空隙
部が接続状態となって連通する結果、軽量化及び良好な
通気性・通液性が確保される。さらに、ガラス質中空球
状粗粒子は、７５０〜１２００℃に加熱された際に、高
温部（約１０００〜１２００℃）の加熱領域で加熱され
ると、各粗粒子は、熔融、発泡して所々に部分的に発泡
穴が形成されたものとなり、各粗粒子自体がその球状壁
の所々に貫通穴を備えるものとなる結果、より良好な通
気性・通液性が実現される。よって、本発明の多孔質セ
ラミック製品は、下記のような材料として利用できる。
軽量タイル、軽量壁板パネル、断熱材料、吸音材料、濾
過材料、触媒を担持させた触媒、微生物を利用する排水
処理に使用される各種バクテリア、細菌類を担持した微
生物担持排水処理材料、遠赤外線放射材料、各種フェラ
イトなどを組成物素材とした電波吸収性パネル等。In the composition of the ceramic product of the present invention, the glassy hollow spherical coarse particles are used because the coarse particles are produced in large quantities from natural glass such as obsidian, perlite and the like, and are inexpensive. Because the inside is hollow and lightweight and has a certain strength, it is because it is used as a main constituent material to contribute to the weight reduction of the product and the improvement of the strength to some extent, and it is glassy Therefore, it is easy to perform sintering bonding with the ceramic matrix that is contact-filled therearound. As a result, in the fired product, the surface layer of the vitreous spherical coarse particles and the ceramic matrix are firmly bonded, and the overall strength is improved. And since the binder containing the glassy hollow spherical coarse particles, the water-absorbing and swollen superabsorbent polymer particles and the unfired ceramic ceramic is used as the main raw material, the porosity of the product can be largely secured. is there. In the ceramic product, a large void portion (hereinafter, referred to as a first void portion) formed between contact portions (hereinafter, referred to as first point contact portions) of the respective vitreous hollow spherical coarse particles in the material. And a large amount of voids (hereinafter, referred to as second voids) as disappearance pores of the water-absorbed and swollen superabsorbent polymer particles in the ceramic matrix filled in the first voids. As a result, the overall porosity is high, and the first and second void portions are connected to communicate with each other. As a result, light weight and good air permeability and liquid permeability are ensured. Further, when the vitreous hollow spherical coarse particles are heated to 750 to 1200 ° C. and heated in a heating region of a high temperature part (about 1000 to 1200 ° C.), each coarse particle melts and foams, and As a result, foaming holes are partially formed in each of the coarse particles, and each coarse particle itself has through holes in various places on its spherical wall. As a result, better air permeability and liquid permeability are realized. Therefore, the porous ceramic product of the present invention can be used as the following materials.
Light-weight tiles, light-wall panels, heat-insulating materials, sound-absorbing materials, filtration materials, catalysts carrying catalysts, various bacteria used in wastewater treatment using microorganisms, microorganism-bearing wastewater treatment materials carrying bacteria, far-infrared rays Radio wave absorbing panels made of radiating materials and various ferrites as composition materials.
【００１１】[0011]
【実施例】本願発明の実施例を以下に説明する。 ［実施例１］ ガラス質球状粗粒子（粒径１〜２ｍｍ） （パーライト） １００重量部 上記の混合物に、下記組成の結合材を７０重量部を添加
混合した。 ケイ酸ソーダ（３号） ４０重量％ 蛍石粉末 １５重量％ 陶石粉末 ２０重量％ 吸水膨潤された高吸水性ポリマー粒子 １０重量％ メトローズ ５重量％ 水 １０重量％ 得られた上記混合配合物を型枠に投入し低圧成形してタ
イル状成形体を得た後、乾燥し、その後９７０℃の焼成
帯で、９０分間焼結させた。この結果、得られた多孔質
セラミックス製品はカサ比重が１程度であり、圧縮強度
２０〜５０ｋｇ／ｃｍ２、高温耐熱性（１０００℃以
上）・耐熱衝撃性に優れ、かつ通気性・通水性に優れ吸
音率も高いものであった。Embodiments of the present invention will be described below. Example 1 Vitreous spherical coarse particles (particle size: 1 to 2 mm) (Perlite) 100 parts by weight To the above mixture, 70 parts by weight of a binder having the following composition was added and mixed. Sodium silicate (No. 3) 40% by weight Fluorite powder 15% by weight Pottery stone powder 20% by weight Superabsorbent polymer particles swelled by water 10% by weight Metroose 5% by weight Water 10% by weight After being put into a mold and being subjected to low pressure molding to obtain a tile-shaped molded body, it was dried and then sintered in a firing zone at 970 ° C. for 90 minutes. As a result, the obtained porous ceramic product has a bulk specific gravity of about 1, a compressive strength of 20 to 50 kg / cm 2 , excellent high-temperature heat resistance (1000 ° C. or higher), excellent thermal shock resistance, and excellent air permeability and water permeability. Excellent sound absorption rate was also high.
【００１２】［実施例２］ ガラス質球状粗粒子（粒径１〜２ｍｍ） （パーライト） １００重量部 上記の混合物に、下記組成の結合材を１３０重量部を添
加混合した。 蛍石粉末 １５重量％ ガラス粉末 ２０重量％ カオリン粉末 ２０重量％ 吸水膨潤された高吸水性ポリマー粒子 １０重量％ メトローズ ５重量％ 水 ３０重量％ 上記混合物を型枠に入れてタイル状成形体にした後、１
０００℃の焼成帯で、６０分間焼結させた。この結果、
得られた多孔質セラミックス製品はカサ比重が１程度で
あり、圧縮強度２０〜６０ｋｇ／ｃｍ２、高温耐熱性
（１０００℃以上）・耐熱衝撃性に優れ、かつ通気性・
通水性に優れ吸音率も高いものであった。なお、上記実
施例において、高吸水性ポリマーとしては、大阪有機化
学工業社製吸水性ポリマー商品名ＢＬ−１００（吸水前
平均粒度７０〜１５０μｍ、吸水後の粒度３００〜７０
０μｍ）を使用した。「メトローズ」（商品名：信越化
学工業社製）はメチルセルロースである。Example 2 Vitreous spherical coarse particles (particle size: 1 to 2 mm) (pearlite) 100 parts by weight To the above mixture, 130 parts by weight of a binder having the following composition was added and mixed. Fluorite powder 15% by weight Glass powder 20% by weight Kaolin powder 20% by weight Highly water-absorbing polymer particles swollen by water 10% by weight Metroose 5% by weight Water 30% by weight The above mixture was put into a mold to form a tile-shaped molded product. Later, 1
Sintering was performed in a sintering zone at 000 ° C. for 60 minutes. As a result,
The resulting porous ceramic product has a bulk specific gravity of about 1, a compressive strength of 20 to 60 kg / cm 2 , excellent high-temperature heat resistance (1000 ° C. or higher), excellent thermal shock resistance, and air permeability.
It had excellent water permeability and high sound absorption. In the above examples, the superabsorbent polymer was manufactured by Osaka Organic Chemical Industry Co., Ltd. under the trade name of BL-100 (average particle size before water absorption 70 to 150 μm, particle size after water absorption 300 to 70).
0 μm) was used. "Metroze" (trade name: manufactured by Shin-Etsu Chemical Co., Ltd.) is methylcellulose.
【００１３】[0013]
【発明の効果】以上の本願発明によれば下記のような優
れた作用効果が得られる。主原料としてガラス質中空球
状粗粒子と吸水膨潤された高吸水性ポリマー粒子と未焼
成セラミックセラミックを含む結合材を使用したことに
よりに、製品の空隙率を多大に確保することができる。
なお、該セラミック製品は、素材中の吸水膨潤された高
吸水性ポリマー粒子の焼失孔が残存するため、マトリッ
クス部分が連通多孔質となっていて、気液通過性が良好
となる。本発明の多孔質セラミック製品は、安価なガラ
ス質中空球状粗粒子を主原料とするため、製品製造コス
トが低く、軽量建材等として有用となる。According to the present invention described above, the following excellent operational effects can be obtained. The use of a binder containing vitreous hollow spherical coarse particles, water-absorbed and swollen superabsorbent polymer particles and unfired ceramic ceramic as the main raw material makes it possible to ensure a large porosity of the product.
In this ceramic product, since the burned-out pores of the water-absorbing and swollen superabsorbent polymer particles in the raw material remain, the matrix portion is made porous and the gas-liquid permeability is improved. Since the porous ceramic product of the present invention is mainly made of inexpensive glassy hollow spherical coarse particles, the product manufacturing cost is low and it is useful as a lightweight building material or the like.
Claims (13)
質セラミックマトリックス焼結体が結合充填してなり、
かつ前記多孔質セラミツクマトリックス焼結体中の多孔
質空隙部が吸水膨潤した高吸水性ポリマーの消失孔であ
ることを特徴とする多孔質セラミック製品。A porous ceramic matrix sintered body is bonded and filled between a large number of glassy hollow spherical coarse particles,
A porous ceramic product characterized in that the porous void portion in the porous ceramic matrix sintered body is a disappearing hole of the superabsorbent polymer that has swollen by water.
状粗粒子１００重量部に対して、多孔質セラミックマト
リックス焼結体１０〜５００重量部が均質混在した焼結
体であり、かつ前記多孔質セラミックマトリックス焼結
体中の多孔質空隙部が吸水膨潤した高吸水性ポリマーの
消失孔であることを特徴とする多孔質セラミック製品。2. A sintered body in which 10 to 500 parts by weight of a porous ceramic matrix sintered body is homogeneously mixed with 100 parts by weight of glassy hollow spherical coarse particles having a particle size of 0.5 to 5.0 mm, A porous ceramic product, wherein the porous void portion in the porous ceramic matrix sintered body is a disappearing hole of a superabsorbent polymer swollen by water.
発泡体粗粒子であることを特徴とする請求項１又は２記
載の多孔質セラミック製品。3. The porous ceramic product according to claim 1, wherein the vitreous hollow spherical coarse particles are natural vitreous foam coarse particles.
ス質粗粒子であることを特徴とする請求項１又は２記載
の多孔質セラミック製品。4. The porous ceramic product according to claim 1, wherein the glassy hollow spherical coarse particles are artificial foamed glassy coarse particles.
重０．２〜１．５、圧縮強度：５．０〜８０ｋｇｆ／ｃ
ｍ２、曲げ強度：０．５〜８．０ｋｇｆ／ｃｍ２である
ことを特徴とする請求項１ないし４のいずれか１項に記
載の多孔質セラミック製品。5. The physical properties of the porous ceramic product are as follows: bulk specific gravity: 0.2 to 1.5, compressive strength: 5.0 to 80 kgf / c.
m 2, bending strength: porous ceramic product according to any one of claims 1 to 4, characterized in that a 0.5~8.0kgf / cm 2.
状粗粒子１００重量部に対して、吸水膨潤した高吸水性
ポリマー３０〜７０重量％を均質に含有する未焼成セラ
ミック粉体を含む結合材５０〜８００重量部とが混合さ
れた混合物を成形し、乾燥した後、７５０〜１２００℃
で焼成することを特徴とする多孔質セラミック製品の製
造方法。6. An unfired ceramic powder containing uniformly 30 to 70% by weight of a water-absorbed and swollen superabsorbent polymer per 100 parts by weight of vitreous hollow spherical coarse particles having a particle size of 0.5 to 5.0 mm. A mixture obtained by mixing 50 to 800 parts by weight of a binder containing
And producing the porous ceramic product.
０〜２０００μｍであることを特徴とする請求項６記載
の多孔質セラミック製品の製造方法。7. The water-swellable superabsorbent polymer having a particle size of 1
The method for producing a porous ceramic product according to claim 6, wherein the thickness is from 0 to 2000 µm.
４０〜７０重量％であることを特徴とする請求項６又は
７記載の多孔質セラミック製品の製造方法。8. The method for producing a porous ceramic product according to claim 6, wherein the unfired ceramic powder accounts for 40 to 70% by weight of the binder.
とする請求項６ないし８のいずれか１項に記載の多孔質
セラミック製品の製造方法。9. The method for producing a porous ceramic product according to claim 6, wherein the binder contains a vitreous powder.
する請求項６ないし９のいずれか１項に記載の多孔質セ
ラミック製品の製造方法。10. The method for producing a porous ceramic product according to claim 6, wherein the binder contains a clay mineral.
とする請求項６〜１０のいずれか１項に記載の多孔質セ
ラミック製品の製造方法。11. The method for producing a porous ceramic product according to claim 6, wherein the binder contains an inorganic binder.
とする請求項６〜１１のいずれか１項に記載の多孔質セ
ラミック製品の製造方法。12. The method for producing a porous ceramic product according to claim 6, wherein the binder contains organic fine particles.
徴とする請求項６〜１２のいずれか１項に記載の多孔質
セラミック製品の製造方法。13. The method for producing a porous ceramic product according to claim 6, wherein the binder contains an organic binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20509997A JP3994233B2 (en) | 1997-07-30 | 1997-07-30 | Porous ceramic product and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20509997A JP3994233B2 (en) | 1997-07-30 | 1997-07-30 | Porous ceramic product and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1149583A true JPH1149583A (en) | 1999-02-23 |
| JP3994233B2 JP3994233B2 (en) | 2007-10-17 |
Family
ID=16501409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20509997A Expired - Fee Related JP3994233B2 (en) | 1997-07-30 | 1997-07-30 | Porous ceramic product and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3994233B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004071995A1 (en) * | 2003-02-12 | 2004-08-26 | Toagosei Co., Ltd. | Method for producing porous ceramic |
| EP1698388A1 (en) * | 2003-12-26 | 2006-09-06 | Ngk Insulators, Ltd. | Method of producing honeycomb structure body |
| WO2008115378A1 (en) * | 2007-03-20 | 2008-09-25 | Corning Incorporated | Low shrinkage plugging mixture for ceramic filter, plugged honeycomb filter and method of manufacturing same |
| KR100873021B1 (en) | 2008-04-22 | 2008-12-09 | (주)정상 엔지니어링 | Water cut-off layer composition and water cut-off layer holding the heavy metal absorption and self-healing function |
| US8128722B2 (en) * | 2002-02-05 | 2012-03-06 | Ibiden Co., Ltd. | Honeycomb filter for purifying exhaust gases, adhesive, coating material, and manufacturing method of honeycomb filter for purifying exhaust gases |
| JP2013112533A (en) * | 2011-11-25 | 2013-06-10 | Kitakyushu Foundation For The Advancement Of Industry Science & Technology | Porous ceramic using volcanic ash as raw material and method for producing the same |
| CN113402290A (en) * | 2020-03-17 | 2021-09-17 | 西南科技大学 | Method for preparing porous ceramic material by utilizing spodumene flotation tailings through low-temperature sintering |
-
1997
- 1997-07-30 JP JP20509997A patent/JP3994233B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8128722B2 (en) * | 2002-02-05 | 2012-03-06 | Ibiden Co., Ltd. | Honeycomb filter for purifying exhaust gases, adhesive, coating material, and manufacturing method of honeycomb filter for purifying exhaust gases |
| WO2004071995A1 (en) * | 2003-02-12 | 2004-08-26 | Toagosei Co., Ltd. | Method for producing porous ceramic |
| US7537716B2 (en) | 2003-02-12 | 2009-05-26 | Toagosei Co., Ltd. | Method for producing porous ceramic |
| EP1698388A1 (en) * | 2003-12-26 | 2006-09-06 | Ngk Insulators, Ltd. | Method of producing honeycomb structure body |
| EP1698388A4 (en) * | 2003-12-26 | 2007-10-24 | Ngk Insulators Ltd | Method of producing honeycomb structure body |
| WO2008115378A1 (en) * | 2007-03-20 | 2008-09-25 | Corning Incorporated | Low shrinkage plugging mixture for ceramic filter, plugged honeycomb filter and method of manufacturing same |
| KR100873021B1 (en) | 2008-04-22 | 2008-12-09 | (주)정상 엔지니어링 | Water cut-off layer composition and water cut-off layer holding the heavy metal absorption and self-healing function |
| JP2013112533A (en) * | 2011-11-25 | 2013-06-10 | Kitakyushu Foundation For The Advancement Of Industry Science & Technology | Porous ceramic using volcanic ash as raw material and method for producing the same |
| CN113402290A (en) * | 2020-03-17 | 2021-09-17 | 西南科技大学 | Method for preparing porous ceramic material by utilizing spodumene flotation tailings through low-temperature sintering |
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