JPH07242471A - Surface-smoothened porous body - Google Patents
Surface-smoothened porous bodyInfo
- Publication number
- JPH07242471A JPH07242471A JP3582294A JP3582294A JPH07242471A JP H07242471 A JPH07242471 A JP H07242471A JP 3582294 A JP3582294 A JP 3582294A JP 3582294 A JP3582294 A JP 3582294A JP H07242471 A JPH07242471 A JP H07242471A
- Authority
- JP
- Japan
- Prior art keywords
- porous body
- binder
- inorganic particles
- particles
- smoothed
- 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
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
- C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
- C04B38/0058—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity open porosity
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00336—Materials with a smooth surface, e.g. obtained by using glass-surfaced moulds
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/82—Coloured materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Building Environments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、建築物の内外装材、防
音壁、床材などに用いるに適した表面を平滑化した多孔
体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 body having a smoothed surface suitable for use as an interior / exterior material for buildings, soundproof walls, flooring and the like.
【０００２】[0002]
【従来の技術】建築物の内外装材や防音壁や床材とし
て、従来から無機質の多孔体が広く使用されている。こ
のような多孔体は、例えば陶磁器等の無機質粒子を釉薬
等の結合剤で結合したものであって、その内部の連通気
孔によって吸音効果を発揮するものである。ところが従
来のこの種の多孔体は、表面が無機質粒子の粒度に応じ
た凹凸面となっているので、屋外に設置される防音壁等
として使用するには支障がないものの、建築物の内装材
として使用するには見栄えが悪いという問題があった。
また、人体や衣服が強く接触したときには、凹凸面によ
ってけがをしたり破れたりする可能性があった。2. Description of the Related Art Conventionally, inorganic porous materials have been widely used as interior and exterior materials for buildings, soundproof walls and floor materials. Such a porous body is obtained by binding inorganic particles such as ceramics with a binder such as glaze, and exhibits a sound absorbing effect by the internal ventilation holes. However, since this type of conventional porous body has an uneven surface corresponding to the particle size of the inorganic particles, it does not hinder the use as a soundproof wall installed outdoors, but it is an interior material for buildings. There was a problem that it looked bad to use as.
Further, when the human body or clothes come into strong contact, the uneven surface may cause injury or tear.
【０００３】[0003]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解決して、従来品と同様の吸音効果や透水効
果を有し、しかも外観がよく人体や衣服が接触しても安
全な多孔体を提供するためになされたものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and has the same sound absorbing effect and water permeating effect as those of the conventional products, and has a good appearance and is safe even when contacted by a human body or clothes. It was made in order to provide a transparent porous body.
【０００４】[0004]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明は、粒子と結合剤とからなる多数の
連通気孔を持つ多孔体の表面を、研摩または切断により
表面粗さの平均値が20μm 以下の平滑面としたことを特
徴とするものである。なお、粒子部分の表面粗さの平均
値が20μm 以下、気孔率は20〜60％であることが好まし
い。DISCLOSURE OF THE INVENTION The present invention, which has been made to solve the above-mentioned problems, has a method of polishing or cutting the surface of a porous body having a large number of open pores composed of particles and a binder to obtain surface roughness. It is characterized in that it has a smooth surface with an average value of 20 μm or less. The average surface roughness of the particle portion is preferably 20 μm or less, and the porosity is preferably 20 to 60%.
【０００５】本発明では無機質粒子として、陶磁器の焼
成物を粉砕したものや、陶磁器原料を造粒し焼成したも
ののほか、花崗岩などの自然石を粉砕したもの、焼却汚
泥等の産業廃棄物を粉砕したもの、軽量骨材等の各種の
無機質粒子を使用することができる。陶磁器の焼成物は
白色であるのが普通であるが、陶磁器原料中に顔料を混
入することにより任意の色に着色することができる。ま
た自然石の場合にはそれぞれ特有の色を持っている。無
機質粒子の形状は多角形、球形等の任意の形状とするこ
とができる。また、有機質粒子としては、ポリエステル
樹脂、ポリ塩化ビニル樹脂等の合成樹脂ビーズを使用す
ることができる。In the present invention, as the inorganic particles, in addition to those obtained by pulverizing a ceramic ware, pulverizing and firing a ceramic raw material, pulverizing natural stone such as granite, and pulverizing industrial waste such as incineration sludge It is possible to use various types of inorganic particles such as the above-mentioned materials and lightweight aggregates. The fired product of ceramics is usually white, but it can be colored in any color by incorporating a pigment into the raw material of ceramics. In addition, each natural stone has its own unique color. The shape of the inorganic particles can be any shape such as a polygon or a sphere. As the organic particles, synthetic resin beads such as polyester resin and polyvinyl chloride resin can be used.
【０００６】これらの無機質粒子や有機質粒子の平均粒
度は0.1 〜10mmの範囲とすることが好ましい。平均粒度
が10mmよりも大きくなりすぎると粒子間の間隙（連通気
孔）のサイズが大きくなり、多孔体としての空気の流れ
抵抗が小さくなって吸音効果や透水効果が低下する。ま
た平均粒度が0.1mm よりも小さくなると粒子間の間隙
（連通気孔）のサイズが小さくなり、多孔体としての特
性が失われて吸音効果や透水効果が低下する。このため
平均粒度は0.1 〜10mmの範囲とするが、より好ましくは
0.5 〜２mmの範囲である。The average particle size of these inorganic particles and organic particles is preferably in the range of 0.1 to 10 mm. If the average particle size is too large than 10 mm, the size of the gap between the particles (communicating air holes) becomes large, the flow resistance of the air as a porous body becomes small, and the sound absorbing effect and water permeating effect decrease. On the other hand, if the average particle size is smaller than 0.1 mm, the size of the spaces between the particles (communicating air holes) becomes small, the properties of the porous body are lost, and the sound absorbing effect and water permeating effect decrease. Therefore, the average particle size should be in the range of 0.1 to 10 mm, but more preferably
It is in the range of 0.5 to 2 mm.
【０００７】結合剤は、無機材料、有機材料のいずれで
あってもよい。無機材料は釉薬、フリット釉、ガラス等
の高温で軟化するものや、セメント等のように水和によ
って固化するものや無機バインダー等を使用することが
できる。有機材料としては、ポリエステル、エポキシ等
の樹脂を使用することもできる。これらの結合剤にも顔
料による任意の着色が可能である。The binder may be an inorganic material or an organic material. As the inorganic material, a glaze, a frit glaze, a material that softens at a high temperature such as glass, a material that solidifies by hydration such as cement, or an inorganic binder can be used. Resins such as polyester and epoxy can be used as the organic material. These binders can also be pigmented in any color.
【０００８】多孔体は、無機質粒子または有機質粒子と
液状または粉末状にした結合剤、成形助剤などの所定量
を混合し、板状等の形状に成形したのち、高温で焼成し
たり常温または高温で硬化させたりする方法で製造され
る。無機質粒子または有機質粒子や結合剤は必要に応じ
て顔料等によって着色する。成形助剤は澱粉糊（水溶
液）、水ガラス、樹脂等の粘着性や可塑性があり、乾燥
や加熱によって固化するもので、主に釉薬等の高温で軟
化する結合剤のように粘着性や可塑性のない無機材料を
結合剤としたときに用いられるものである。成形助剤は
無機質粒子や有機質粒子の表面に結合剤がコーティング
され易くしたり、多孔体の成形性を良くしたり、焼成前
の成形品に強度を与えて手扱いに耐えるようにするもの
である。成形助剤の添加量は上記のコーティング性等を
得るために必要な最低量が好ましい。なお、成形助剤は
多孔体のい焼成時に消失するかガラスとなって残留す
る。無機質粒子や有機質粒子に対する結合剤の添加量は
２〜30％が好ましい。無機質粒子や有機質粒子と結合剤
等の混合により、無機質粒子の表面に結合剤等がコーテ
ィングされた状態の混合物となる。The porous material is formed by mixing inorganic particles or organic particles with a predetermined amount of a liquid or powdery binder, a molding aid, etc., and molding it into a plate-like shape, followed by firing at a high temperature or at room temperature. It is manufactured by a method of curing at high temperature. The inorganic particles or the organic particles and the binder are colored with a pigment or the like as necessary. Molding aids have adhesiveness and plasticity such as starch paste (water solution), water glass, resin, etc., which solidify by drying or heating, and are mainly adhesive or plastic like binders that soften at high temperatures such as glaze. It is used when a non-inorganic material is used as a binder. The molding aid is used to facilitate the coating of the binder on the surface of the inorganic or organic particles, improve the moldability of the porous body, and impart strength to the molded product before firing to withstand handling by hand. is there. The addition amount of the molding aid is preferably the minimum amount necessary for obtaining the above coating properties and the like. The molding aid disappears or remains as glass when the porous body is baked. The addition amount of the binder to the inorganic particles and the organic particles is preferably 2 to 30%. By mixing the inorganic particles or the organic particles with the binder or the like, a mixture is obtained in which the surface of the inorganic particles is coated with the binder or the like.
【０００９】この混合物を金型等に所定量を充填し平滑
に均した後、加圧成形、振動成形、振動加圧成形などに
より所定の寸法に成形する。充填量は多孔体の密度や気
孔率等を考慮して設定する。なお、成形方法は押し出し
成形、射出成形などの方法でもよい。After a predetermined amount of this mixture is filled in a mold or the like and smoothed, it is molded into a predetermined size by pressure molding, vibration molding, vibration pressure molding or the like. The filling amount is set in consideration of the density and porosity of the porous body. The molding method may be extrusion molding, injection molding or the like.
【００１０】成形後は脱型し、直接焼成または硬化させ
て多孔体とするか、または乾燥したり一次硬化させたり
して手扱いに耐える程度に固化した後、トンネル窯、ロ
ーラーハースキルン等で焼成したり硬化室で硬化させた
りして多孔体を得る。釉薬等の高温で軟化する結合剤を
用いた多孔体は結合剤の軟化溶融温度を無機質材料と同
じかそれ以下とし、結合剤の軟化溶融する温度で焼成す
る。樹脂を結合剤とした場合には、加圧したまま金型内
で加熱硬化（ホットプレス）させてもよい。また、有機
質粒子の場合には、結合剤を無くして高温で加熱して粒
子同志を結合させて、多孔体とすることもできる。After molding, the product is removed from the mold and directly fired or cured to form a porous body, or it is dried or primary cured to solidify so that it can be handled by hand, and then it is subjected to tunnel kiln, roller hearth kiln, etc. A porous body is obtained by firing or curing in a curing chamber. A porous body using a binder that softens at high temperature, such as glaze, has a softening melting temperature of the binder equal to or lower than that of the inorganic material, and is fired at a temperature at which the softening melting of the binder occurs. When a resin is used as the binder, it may be heated and cured (hot press) in the mold while being pressurized. In the case of organic particles, it is also possible to remove the binder and heat at high temperature to bond the particles together to form a porous body.
【００１１】樹脂やセメントを結合剤とした場合の多孔
体は、無機質粒子や有機粒子の表面を結合剤が覆い、該
結合剤を介して無機質粒子が相互に連結され、無機質粒
子間には表裏に連通する細孔が生じている。釉薬等の高
温で軟化する結合剤を用いた場合の多孔体は、無機質粒
子の表面を覆った結合剤が軟化溶融し一部は無機質粒子
と反応し融合しており、該結合剤を介して無機質粒子が
相互に連結され、無機質粒子間には表裏に連通する細孔
が生じている。また多孔体の厚さは数mm以上の製造が可
能である。In the case of using a resin or cement as a binder, the porous material covers the surface of the inorganic particles or organic particles with the binder, and the inorganic particles are interconnected through the binder, and the inorganic particles have front and back surfaces. There are pores communicating with. When a binder that softens at a high temperature such as glaze is used, the binder that covers the surface of the inorganic particles is softened and melted, and a part of the binder reacts with the inorganic particles and is fused. The inorganic particles are connected to each other, and pores communicating with the front and back are formed between the inorganic particles. Further, it is possible to manufacture the porous body with a thickness of several mm or more.
【００１２】このようにして製造した多数の連通孔を持
つ多孔体の気孔率は20〜60％、好ましくは30〜50％とす
る。気孔率が20％より小さいと空気の流れ抵抗が大きく
なって吸音効果が低下し、気孔率が60％より大きくなる
と空気の流れ抵抗が小さくなってやはり吸音効果が低下
する。The porosity of the porous body having a large number of communicating pores produced in this manner is 20 to 60%, preferably 30 to 50%. When the porosity is less than 20%, the flow resistance of air increases and the sound absorbing effect decreases, and when the porosity exceeds 60%, the flow resistance of air decreases and the sound absorbing effect also decreases.
【００１３】なお、空気の流れ抵抗が大きくなると吸音
効果が低下する理由は、入射音が多孔体の表面で反射さ
れやすくなるためである。また空気の流れ抵抗が小さす
ぎても吸音効果が低下する理由は、多孔体の気孔中の空
気の粘性摩擦抵抗が小さすぎるため音響インピーダンス
密度の抵抗分が小さくなり、音波が入射しても空気の運
動による摩擦損失が小さくなるためである。The reason why the sound absorption effect decreases when the air flow resistance increases is that the incident sound is easily reflected on the surface of the porous body. The reason why the sound absorption effect is reduced if the air flow resistance is too small is that the viscous friction resistance of the air in the pores of the porous body is too small, so the resistance component of the acoustic impedance density becomes small, and even if a sound wave enters the air This is because the friction loss due to the movement of is small.
【００１４】このように無機質粒子や有機質粒子を結合
剤により結合して得られた多孔体の表面は、無機質粒子
の粒度以下の平滑面とされる。多孔体の表面をこのよう
な平滑面とするには、多孔体の表面を砥石やバフにより
研摩したり、ダイヤモンドカッターやレーザー等により
多孔体を切断する方法を取ることができる。もちろん、
切断面を研摩することも可能である。その結果、従来品
と同様の吸音効果を有ししかも表面が平滑で光沢があり
外観がよく、人体や衣服が接触しても安全な多孔体を得
ることができる。上記の効果を得るために、この平滑面
の表面粗さの最大値は200 μm 以下であり、好ましくは
100 μm 以下、より好ましくは20μm 以下である。ま
た、粒子部分の平滑面の表面粗さの平均値は20μm 以下
であり、好ましくは2 μm 以下である。研摩後の平滑な
多孔体の表面粗さは、触針式表面粗さ計を用いJIS B 06
01-1982 の方法に準じて気孔部分を除いた粒子部分につ
いて平均粗さと最大粗さを測定したものである。The surface of the porous body obtained by binding the inorganic particles and the organic particles with a binder in this manner is a smooth surface having a particle size equal to or smaller than that of the inorganic particles. In order to make such a smooth surface on the surface of the porous body, a method of polishing the surface of the porous body with a grindstone or a buff, or cutting the porous body with a diamond cutter, a laser or the like can be used. of course,
It is also possible to polish the cut surface. As a result, it is possible to obtain a porous body which has a sound absorbing effect similar to that of the conventional product, has a smooth surface, is glossy and has a good appearance, and is safe even when contacted by a human body or clothes. In order to obtain the above effect, the maximum value of the surface roughness of this smooth surface is 200 μm or less, preferably
It is 100 μm or less, more preferably 20 μm or less. The average value of the surface roughness of the smooth surface of the particle portion is 20 μm or less, preferably 2 μm or less. For the surface roughness of the smooth porous body after polishing, use a stylus-type surface roughness meter, and use JIS B 06
According to the method of 01-1982, the average roughness and the maximum roughness of the particle portion excluding the pore portion are measured.
【００１５】なお、本発明の表面を平滑化した多孔体に
は種々の方法で模様付けを行うことができる。例えば、
着色および未着色無機質粒子単独または複数使用、着
色および未着色結合剤の単独または複数使用、前述の無
機質粒子と結合剤の組み合わせ使用を混合時、成形時等
に行うことにより生じたさまざまな模様を研摩後に浮き
出るようにする方法、成形後色をつけた結合剤をスプ
レーして多孔体内部に含浸させ、研摩後に浮き出るよう
にする方法、混合時、成形時に有機物のかたまりや軽
量骨材等焼成によって消失するか収縮するものを添加し
ておき、研摩後る虫食い状の模様を浮き出す方法、多
孔体の表面を部分的に研摩して模様を付けたり、全面研
摩後に部分的にブラスト等によって粗面とする模様付け
方法、等をあげることができる。このようにして得られ
た多孔体の表面は、無機質粒子、結合剤等の研摩面が組
み合わされ、石目調等の種々の模様となって浮き出てい
る。The surface-smoothed porous material of the present invention can be patterned by various methods. For example,
Various patterns produced by using colored and uncolored inorganic particles singly or plurally, using colored and uncolored binders singly or plurally, and combining the aforementioned inorganic particles and binder at the time of mixing and molding. Method of making it stand out after polishing, spraying a colored binder after molding to impregnate the inside of the porous body, and making it stand out after polishing. Add a material that disappears or shrinks, and then lift out the worm-eaten pattern after polishing, partially polish the surface of the porous body to give a pattern, or partially blast after full polishing. The surface patterning method, etc. can be mentioned. The surface of the porous body thus obtained is combined with abrasive surfaces such as inorganic particles and a binder, and various patterns such as a stone tone are projected.
【００１６】[0016]
【作用】本発明の表面を平滑化した多孔体は、多数の連
通気孔を有することは従来の多孔体と同じであるため、
従来の多孔体と同様の吸音効果や透水効果を有し、防音
壁や吸音材や吸音効果のある内外装材や床材として用い
るに適したものである。しかも多孔体の表面を研摩また
は切断により表面粗さの平均値が20μm 以下の平滑面と
したものであるから、表面に光沢がある石目調の優れた
外観を持ち、また人体や衣服が接触しても安全である。The porous material having a smoothed surface according to the present invention has a large number of continuous air holes, which is the same as the conventional porous material.
It has the same sound absorbing effect and water permeable effect as the conventional porous body, and is suitable for use as a soundproof wall, a sound absorbing material, an interior / exterior material having a sound absorbing effect, or a floor material. Moreover, since the surface of the porous body is polished or cut to form a smooth surface with an average surface roughness of 20 μm or less, the surface has a glossy, stone-like appearance and is in contact with the human body or clothing. It's safe to do.
【００１７】[0017]
【実施例】以下に本発明の実施例を示す。碍子製造用の
白色磁器を粉砕し、振動ふるいを通して平均粒度１mm
（粒度分布0.1 〜２mm）に分級した無機質粒子と、顔料
により着色した釉薬粉末である結合剤と、でんぷん糊の
水溶液である成形助剤とを準備した。無機質粒子と結合
剤とを８：２の重量割合で計量して混合機に入れ、更に
成形助剤を少量加えながら５分間程度混合した後、混合
物を金型に入れて振動加圧成形して厚さが32mmとなるよ
うに成形した。EXAMPLES Examples of the present invention will be shown below. Crush white porcelain for insulator production and pass through a vibrating screen to obtain an average particle size of 1 mm.
Inorganic particles classified to (particle size distribution 0.1 to 2 mm), a binder which was a glaze powder colored with a pigment, and a molding aid which was an aqueous solution of starch paste were prepared. The inorganic particles and the binder were weighed in a weight ratio of 8: 2 and put in a mixer, and after mixing for about 5 minutes while adding a small amount of a molding aid, the mixture was put in a mold and subjected to vibration pressure molding. It was molded to have a thickness of 32 mm.
【００１８】成形後、成形品を金型の内部に敷いた鉄板
ごと脱型し、乾燥台車に積み乾燥室で乾燥した。乾燥品
をキルンカー上に棚組みした炭化珪素板の上に載せ、ト
ンネル炉内で1350℃で焼成して厚さが約32mmの多孔体を
得た。その表面は図１の研摩前の欄に示した通りであ
り、外周が結合材１により包まれた多数の無機質粒子の
間隙に、多数の連通気孔２が存在している。またこの多
孔体の表面は１mm程度の凹凸を持つ粗面となっている。After the molding, the molded product was released from the mold together with the iron plate laid inside the mold, loaded on a drying trolley and dried in a drying chamber. The dried product was placed on a silicon carbide plate shelved on a kiln car and fired at 1350 ° C. in a tunnel furnace to obtain a porous body having a thickness of about 32 mm. The surface is as shown in the column before polishing in FIG. 1, and a large number of continuous air holes 2 are present in the gaps of a large number of inorganic particles whose outer periphery is wrapped with the binder 1. The surface of this porous body is a rough surface having irregularities of about 1 mm.
【００１９】この多孔体を研摩機にセットし、化学砥石
を用いて片側の表面を研摩して表面が平滑面とされた厚
さが30mmの多孔体を得た。研摩は#400、#800、#1500 の
順に次第に目の細かい砥石を使用して行った。得られた
多孔体の表面は図１の研摩後の欄に示した通りであり、
外周が結合材１により包まれた無機質粒子３の一部が研
摩され、無機質粒子３の粒度以下の平滑度を持つ平滑面
４となっている。かつ多孔体の表面には無機質粒子の白
と着色釉の研摩面が複雑に混じった模様ができており、
しかも従来と同様の多数の連通気孔２を備えている。得
られた多孔体の気孔率は40％、表面粗さの平均値は1 μ
m 以下であり流れ抵抗は660N・S/m3、透水係数は0.3cm/
sec であった。This porous body was set in a polishing machine, and one surface was polished with a chemical grindstone to obtain a porous body having a smooth surface and a thickness of 30 mm. Polishing was carried out in order of # 400, # 800, # 1500 using a fine grindstone. The surface of the obtained porous body is as shown in the column after polishing in FIG.
A part of the inorganic particles 3 having the outer periphery wrapped with the binder 1 is polished to form a smooth surface 4 having a smoothness equal to or smaller than the particle size of the inorganic particles 3. Moreover, the surface of the porous body has a pattern in which the white of the inorganic particles and the polished surface of the colored glaze are intricately mixed,
Moreover, it has a large number of continuous ventilation holes 2 similar to the conventional one. The porosity of the obtained porous body is 40%, and the average surface roughness is 1 μ.
Flow resistance of 660 N ・ S / m 3 and permeability of 0.3 cm /
It was sec.
【００２０】この多孔体を直径100mm の円板に切断し、
JIS A 1405「管内法による垂直入射吸音率測定方法」に
規定される方法に従って、研摩面を音源側とし、背後空
気層を50mmとして垂直入射吸音率を測定した。その結果
を図２のグラフに示す。This porous body is cut into a disc with a diameter of 100 mm,
According to the method specified in JIS A 1405 "Measurement method for normal incidence sound absorption coefficient by in-pipe method", the polished surface was used as the sound source side and the back air layer was 50 mm to measure the normal incidence sound absorption coefficient. The results are shown in the graph of FIG.
【００２１】また、無機質粒子の粒度、結合材の混合割
合、金型への充填度等を変え、流れ抵抗が55 N・S/m3、
130N・S/m3、340N・S/m3、1450 N・S/m3、1950 N・S/m3
の多孔体をそれぞれ製造し、上記と同じ方法で垂直入射
吸音率を測定した結果を図２のグラフにあわせて示し
た。図２のグラフから、流れ抵抗が100 〜1500 N・S/m3
の範囲にある多孔体は幅広い周波数範囲にわたり高い吸
音特性を示すことが分かる。Further, the flow resistance is 55 N · S / m 3 , by changing the particle size of the inorganic particles, the mixing ratio of the binder, the filling degree in the mold, etc.
130 N / S / m 3 , 340 N / S / m 3 , 1450 N / S / m 3 , 1950 N / S / m 3
Each of the above porous bodies was manufactured, and the normal incident sound absorption coefficient was measured by the same method as above. The results are also shown in the graph of FIG. From the graph of Figure 2, the flow resistance is 100-1500 N · S / m 3
It can be seen that the porous body in the range of 1 shows high sound absorption characteristics over a wide frequency range.
【００２２】[0022]
【発明の効果】以上に説明したとおり、本発明の表面を
平滑化した多孔体は従来の多孔体と同様の吸音効果や透
水効果を有し、しかも多孔体の表面を研摩または切断に
より表面粗さの平均値が20μm 以下の平滑面としたもの
であるから、表面に光沢がある石目調の優れた外観を持
ち、また人体や衣服が接触しても安全であるという利点
がある。さらに、粒子を着色または結合剤を着色し、こ
れらの配列、組合せにより図柄や模様を形成させて外観
を向上させることができるという利点もある。As described above, the porous body having a smoothed surface of the present invention has the same sound absorbing effect and water permeating effect as the conventional porous body, and moreover, the surface of the porous body is roughened by polishing or cutting. Since it is a smooth surface with an average value of 20 μm or less, it has an advantage that it has a glossy surface with an excellent stone-tone appearance and is safe even if it comes into contact with human bodies or clothes. Furthermore, there is an advantage that the particles can be colored or the binder can be colored, and a pattern or pattern can be formed by the arrangement and combination of these to improve the appearance.
【図１】本発明の多孔体の表面状態を示す平面図と側面
図である。FIG. 1 is a plan view and a side view showing a surface state of a porous body of the present invention.
【図２】本発明の多孔体の垂直入射吸音率のグラフであ
る。FIG. 2 is a graph of the normal incidence sound absorption coefficient of the porous body of the present invention.
１ 結合材、２ 連通気孔、３ 無機質粒子、４ 平滑
面1 binder, 2 continuous vents, 3 inorganic particles, 4 smooth surface
Claims (4)
を持つ多孔体の表面を、研摩または切断により、平滑面
にしたことを特徴とする表面を平滑化した多孔体。1. A porous body having a smoothed surface, characterized in that the surface of a porous body having a large number of continuous air holes consisting of particles and a binder is made smooth by polishing or cutting.
下、気孔率が20〜60％である請求項１に記載の表面を平
滑化した多孔体。2. The surface smoothed porous body according to claim 1, wherein the average value of the surface roughness of the particle portion is 20 μm or less and the porosity is 20 to 60%.
結合剤が着色してあり、これらの配列、組合せにより、
平滑化した多孔体の表面に図柄や模様を形成させた請求
項１に記載の表面を平滑化した多孔体。3. The particles are colored, and / or the binder is colored, and the arrangement and the combination of these are preferable.
The surface-smoothed porous body according to claim 1, wherein a pattern or pattern is formed on the surface of the smoothed porous body.
体の表面を部分的に研摩してその部分の表面粗さをその
他の部分と変化させることによって、平滑化した多孔体
の表面に図柄や模様を形成させた表面を平滑化した多孔
体。4. A surface of a porous body smoothed by partially polishing the surface of the porous body having a smoothed surface according to claim 1 to change the surface roughness of that portion to that of the other portion. A porous body with a smooth surface on which patterns and patterns are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3582294A JPH07242471A (en) | 1994-03-07 | 1994-03-07 | Surface-smoothened porous body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3582294A JPH07242471A (en) | 1994-03-07 | 1994-03-07 | Surface-smoothened porous body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07242471A true JPH07242471A (en) | 1995-09-19 |
Family
ID=12452650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3582294A Pending JPH07242471A (en) | 1994-03-07 | 1994-03-07 | Surface-smoothened porous body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07242471A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007066840A1 (en) * | 2005-12-09 | 2007-06-14 | Richstone Limited | Decoration method of ceramics |
| JP2008150861A (en) * | 2006-12-18 | 2008-07-03 | Tobishima Corp | Sound absorbing panel |
-
1994
- 1994-03-07 JP JP3582294A patent/JPH07242471A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007066840A1 (en) * | 2005-12-09 | 2007-06-14 | Richstone Limited | Decoration method of ceramics |
| JP2008150861A (en) * | 2006-12-18 | 2008-07-03 | Tobishima Corp | Sound absorbing panel |
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