JPH0653624B2 - Inorganic fiberboard manufacturing method - Google Patents
Inorganic fiberboard manufacturing methodInfo
- Publication number
- JPH0653624B2 JPH0653624B2 JP60060032A JP6003285A JPH0653624B2 JP H0653624 B2 JPH0653624 B2 JP H0653624B2 JP 60060032 A JP60060032 A JP 60060032A JP 6003285 A JP6003285 A JP 6003285A JP H0653624 B2 JPH0653624 B2 JP H0653624B2
- Authority
- JP
- Japan
- Prior art keywords
- organic binder
- glaze
- inorganic
- inorganic fiber
- temperature
- 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.)
- Expired - Lifetime
Links
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Description
【発明の詳細な説明】 ［技術分野］ 本発明は、ロックウール、ガラスウール等の無機質繊維
が配合されて成形された無機質繊維板の製造法に関する
ものである。Description: TECHNICAL FIELD The present invention relates to a method for producing an inorganic fiber board formed by mixing inorganic fibers such as rock wool and glass wool.
［背景技術］ ロックウール、ガラスウール等の無機質繊維を用いた非
住宅用の繊維板は、吸音性、遮音性、断熱性等に優れて
いるが、一般に無機質繊維板は有機物をバインダーとし
て使用しているために、無機質繊維の素材そのものの耐
火温度以下の熱で破損、燃焼する場合があり、またその
有機質バインダーが湿度、温度等の環境条件によっては
接着強度が低下し、無機質繊維板に変形等を生じる場合
があった。（例えば特公昭５４−１６５３６号公報参
照） ［発明の目的］ 本発明は上記の点に鑑みて成されたものであって、有機
質バインダーを除去することによって耐火性を上げるこ
とができると共に、また湿度や温度等の影響によって接
着強度が低下することのない無機質繊維板の製造法を提
供することを目的とするものである。[Background Art] Non-residential fiberboards made of inorganic fibers such as rock wool and glass wool are excellent in sound absorption, sound insulation, and heat insulation. In general, inorganic fiberboards use organic substances as binders. Therefore, it may be damaged or burned by heat below the refractory temperature of the material of the inorganic fiber itself, and the organic binder may be reduced in adhesive strength depending on environmental conditions such as humidity and temperature, and transformed into an inorganic fiber board. And so on. (See, for example, Japanese Examined Patent Publication No. 54-16536) [Object of the Invention] The present invention has been made in view of the above points, and it is possible to improve the fire resistance by removing the organic binder. An object of the present invention is to provide a method for producing an inorganic fiber board in which the adhesive strength does not decrease due to the influence of humidity, temperature and the like.
［発明の開示］ すなわち、本発明の無機質繊維板は、無機質繊維と、澱
粉より成る有機質バインダーと、焼成温度が上記無機質
繊維の耐火温度以下であって５５０℃〜８５０℃の領域
に融点を有する釉薬とが配合されて混練された混練物を
成形して有機質バインダーにて保形された生板を作製
し、次いでこの生板を高温焼成することにより、溶融し
た釉薬によって無機質繊維同士を結合すると共に有機質
バインダーを燃焼除去して上記目的を達成したものであ
る。DISCLOSURE OF THE INVENTION That is, the inorganic fiber board of the present invention has an inorganic fiber, an organic binder made of starch, and a melting point in the region of 550 ° C. to 850 ° C. at a firing temperature not higher than the refractory temperature of the inorganic fiber. A kneaded product mixed with a glaze is molded to form a raw plate that is shaped by an organic binder, and then the raw plate is fired at a high temperature to bond the inorganic fibers to each other by the molten glaze. At the same time, the organic binder is burned and removed to achieve the above object.
以下本発明を詳細に説明する。無機質繊維としては、ロ
ックウールやガラスウール及び補強繊維としてのアスベ
スト等を使用することができる。また、有機質バインダ
ーとしては澱粉を使用する。この澱粉は、生板の段階で
生板の保形材（型崩れ防止材）として使用されるもので
ある。釉薬は融点が上記無機質繊維の耐火温度以下の焼
成温度を有するものを使用するもので、融点が５５０〜
８５０℃程度の釉薬を使用することができる。このよう
に澱粉の融点よりも高く且つ無機質繊維の融点よりも低
い領域に融点を有する釉薬を使用することによって、生
板を釉薬の融点以上の温度で焼成した場合、釉薬よりも
融点の低い澱粉は焼成時の熱によって除去されると共
に、釉薬が溶融して無機質繊維同士を結合させることが
できる。また無機質繊維の融点は釉薬の融点よりも高い
ので、釉薬の溶融時に無機質繊維が溶融するおそれはな
い。そして、これらの無機質繊維、補強繊維、有機質バ
インダー及び釉薬を水に分散させて混練し、含水率１０
０〜２００％程度のペースト状とした後、板状に成形し
て生板を作成する。次いで、生板を含水率２％以下にま
で乾燥させ、その後上記釉薬の融点以上の温度、例えば
８００℃程度で生板を焼成するのである。この焼成によ
って、有機質バインダーは燃焼除去されると共に、釉薬
が溶融して無機質繊維同士を結合することになる。The present invention will be described in detail below. Rock wool, glass wool, and asbestos as a reinforcing fiber can be used as the inorganic fiber. Starch is used as the organic binder. This starch is used as a shape-retaining material (shape-preventing material) for the raw plate at the stage of the raw plate. The glaze has a melting point which has a firing temperature not higher than the refractory temperature of the above-mentioned inorganic fibers, and has a melting point of 550 to
A glaze at about 850 ° C can be used. By using a glaze having a melting point higher than the melting point of the starch and lower than the melting point of the inorganic fiber in this way, when the raw plate is baked at a temperature higher than the melting point of the glaze, the starch having a lower melting point than the glaze is used. Is removed by heat during firing, and the glaze can be melted to bond the inorganic fibers to each other. Further, since the melting point of the inorganic fiber is higher than the melting point of the glaze, there is no possibility that the inorganic fiber melts when the glaze melts. Then, these inorganic fibers, reinforcing fibers, organic binder and glaze are dispersed in water and kneaded to obtain a water content of 10
A green board is prepared by forming a paste with a content of 0 to 200% and then shaping into a plate. Then, the green plate is dried to a water content of 2% or less, and then the green plate is baked at a temperature equal to or higher than the melting point of the glaze, for example, about 800 ° C. By this firing, the organic binder is burned and removed, and the glaze melts to bond the inorganic fibers together.
しかして、無機質繊維と有機質バインダーと釉薬とが配
合されて混練された混練物を成形することにより、有機
質バインダーによって保形し、この混練物を板状に成形
することができるものであり、その後生板を焼成するこ
とにより、釉薬を溶融させて無機質繊維同士をこの釉薬
で結合することができる。このように溶融した釉薬にて
無機質繊維同士を結合させることができる一方で、有機
質バインダーは焼成時の熱によって除去されて無機質繊
維板中に含有されないものとなり、従って、耐火性及び
耐湿性に優れた完全無機質の無機質繊維板を得ることが
できるものである。ここで、生板は釉薬の融点以上の温
度で焼成するのが好ましい。また、釉薬の融点は５５０
〜８５０℃程度のものを使用するのが好ましく、融点が
５５０℃未満の場合には無機質繊維板の耐火性が劣るこ
とになり、また釉薬の融点が８５０℃を超える場合には
焼成温度が高くなると共に、無機質繊維が溶融する恐れ
があるものである。また、その際有機質バインダーは加
熱によって燃焼除去されることになり、得られた無機質
繊維板の耐火温度が上がると共に有機質バインダーの存
在によって生じる温度・湿度条件の変化による無機質繊
維板の変形等を少なくすることができるものである。例
えば、従来のロックウール板では湿度・温度条件による
寸法変化率が０．０３％であったが、本発明に係る無機
質繊維板では寸法変化率は０．０１％となり、無機質繊
維板の変形を少なくすることができるものとなった。し
かも、有機質バインダーは焼成時の型崩れ防止の為だけ
に配合しているので、この有機質バインダーで接着強度
を付与させる必要はなく、従って有機質バインダーの配
合量を少なくして原材料のコストダウンを行える上に、
また従来の有機質バインダーで無機質繊維を保形してい
る場合のように湿気等による接着性の低下もないもので
ある。Then, by shaping the kneaded product in which the inorganic fiber, the organic binder, and the glaze are mixed and kneaded, the shape is maintained by the organic binder, and the kneaded product can be formed into a plate shape, and thereafter. By firing the green plate, the glaze can be melted and the inorganic fibers can be bonded to each other by the glaze. While it is possible to bond the inorganic fibers to each other with the molten glaze in this way, the organic binder is removed by the heat at the time of firing and is not contained in the inorganic fiber board, and therefore excellent in fire resistance and moisture resistance. It is possible to obtain a completely inorganic inorganic fiberboard. Here, the green plate is preferably baked at a temperature equal to or higher than the melting point of the glaze. The melting point of glaze is 550.
It is preferable to use a material having a melting point of about 850 ° C or less. If the melting point is less than 550 ° C, the fire resistance of the inorganic fiber board will be poor, and if the melting point of the glaze exceeds 850 ° C, the firing temperature will be high. In addition, the inorganic fibers may melt. In addition, at that time, the organic binder will be burned and removed by heating, and the fire resistance temperature of the obtained inorganic fiber board will increase and the deformation of the inorganic fiber board due to the change in temperature and humidity conditions caused by the presence of the organic binder will be reduced. Is what you can do. For example, the conventional rock wool board had a dimensional change rate of 0.03% depending on the humidity and temperature conditions, whereas the inorganic fiber board of the present invention had a dimensional change rate of 0.01%, and the inorganic fiber board was not deformed. It can be reduced. Moreover, since the organic binder is blended only for preventing the shape loss during firing, it is not necessary to impart adhesive strength with this organic binder, and therefore the blending amount of the organic binder can be reduced to reduce the cost of raw materials. above,
In addition, the adhesiveness is not deteriorated by moisture or the like as in the case where the inorganic fiber is shaped by a conventional organic binder.
以下本発明を実施例に基づいて具体的に説明する。The present invention will be specifically described below based on examples.
実施例 無機質繊維としてロックウール８０重量％、有機質バイ
ンダーとして澱粉３重量％、補強繊維としてアスベスト
４重量％及び釉薬１３重量％を水に分散させて混練し、
板状に成形して含水率１００〜２００％の生板を作成し
た。次に、この生板の含水率が２％以下になるまで乾燥
し、その後８００℃で２０分間焼成して無機質繊維板を
得た。Example 80% by weight of rock wool as an inorganic fiber, 3% by weight of starch as an organic binder, 4% by weight of asbestos as a reinforcing fiber and 13% by weight of glaze were dispersed in water and kneaded,
A green plate having a water content of 100 to 200% was formed by molding into a plate shape. Next, the green board was dried until the water content was 2% or less, and then baked at 800 ° C. for 20 minutes to obtain an inorganic fiber board.
得られた無機質繊維板は約８００℃程度まで破損、燃焼
せず、また湿気や温度の影響によって強度が低下せず、
また変形も少ないものであった。The obtained inorganic fiber board does not break or burn up to about 800 ° C, and its strength does not decrease due to the influence of humidity and temperature.
Also, the deformation was small.
［発明の効果］ 上記のように本発明は、無機質繊維と、澱粉より成る有
機質バインダーと、焼成温度が上記無機質繊維の耐火温
度以下であって５５０℃〜８５０℃の領域に融点を有す
る釉薬とが配合されて混練された混練物を成形して有機
質バインダーにて保形された生板を作製し、次いでこの
生板を高温焼成することにより、溶融した釉薬によって
無機質繊維同士を結合すると共に有機質バインダーを焼
結除去するという製造法を採用したことにより、無機質
繊維板中から有機質バインダーを完全に除去することが
でき、無機質繊維板の耐火温度が上昇して焼成温度まで
は変形しない完全無機質の無機質繊維板を得ることがで
き、しかも有機質バインダーは生板の焼成時の型崩れ防
止のためだけに配合されるので、有機質バインダーの存
在によって生じる湿度、温度等の環境条件の変化による
接着強度の低下等がなく、耐火性に優れ、湿気の影響な
どによる無機質繊維板の変形等を少なくすることができ
るという利点がある。[Advantages of the Invention] As described above, the present invention includes: an inorganic fiber, an organic binder made of starch, and a glaze having a melting point in the range of 550 ° C to 850 ° C which is lower than the fireproof temperature of the inorganic fiber. Is mixed and kneaded to form a kneaded product to form a raw plate with an organic binder, and then the raw plate is fired at a high temperature to bond the inorganic fibers with each other by the molten glaze and By adopting a manufacturing method that removes the binder by sintering, the organic binder can be completely removed from the inorganic fiber board, and the fire resistance temperature of the inorganic fiber board rises and does not deform to the firing temperature. Inorganic fiber board can be obtained, and since the organic binder is added only to prevent the shape of the green board from breaking during firing, the presence of the organic binder Adhesive strength does not decrease due to changes in environmental conditions such as humidity and temperature, which is excellent in fire resistance, and it is possible to reduce deformation of the inorganic fiber board due to the influence of humidity.
Claims (1)
ダーと、焼成温度が上記無機質繊維の耐火温度以下であ
って５５０℃〜８５０℃の領域に融点を有する釉薬とが
配合されて混練された混練物を成形して有機質バインダ
ーにて保形された生板を作製し、次いでこの生板を高温
焼成することにより、溶融した釉薬によって無機質繊維
同士を結合すると共に有機質バインダーを焼結除去する
ことを特徴とする無機質繊維板の製造法。1. A kneading method in which inorganic fibers, an organic binder made of starch, and a glaze having a melting point in the region of 550 ° C. to 850 ° C. having a firing temperature not higher than the refractory temperature of the inorganic fibers are mixed and kneaded. By molding the product to make a raw plate shape-retained with an organic binder, and then firing the raw plate at a high temperature, it is possible to bond the inorganic fibers to each other by the molten glaze and remove the organic binder by sintering. A method for producing a characteristic inorganic fiberboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60060032A JPH0653624B2 (en) | 1985-03-25 | 1985-03-25 | Inorganic fiberboard manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60060032A JPH0653624B2 (en) | 1985-03-25 | 1985-03-25 | Inorganic fiberboard manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61219771A JPS61219771A (en) | 1986-09-30 |
| JPH0653624B2 true JPH0653624B2 (en) | 1994-07-20 |
Family
ID=13130321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60060032A Expired - Lifetime JPH0653624B2 (en) | 1985-03-25 | 1985-03-25 | Inorganic fiberboard manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0653624B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4976912A (en) * | 1972-11-27 | 1974-07-24 | ||
| GB1599550A (en) * | 1977-06-09 | 1981-10-07 | Acna | Water-insoluble monoazo dyes |
| JPS5711873A (en) * | 1980-06-24 | 1982-01-21 | Kurosaki Refractories Co | Plate brick for sliding nozzle |
-
1985
- 1985-03-25 JP JP60060032A patent/JPH0653624B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61219771A (en) | 1986-09-30 |
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