JP2601785B2 - Manufacturing method of inorganic plate - Google Patents
Manufacturing method of inorganic plateInfo
- Publication number
- JP2601785B2 JP2601785B2 JP17179292A JP17179292A JP2601785B2 JP 2601785 B2 JP2601785 B2 JP 2601785B2 JP 17179292 A JP17179292 A JP 17179292A JP 17179292 A JP17179292 A JP 17179292A JP 2601785 B2 JP2601785 B2 JP 2601785B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- mixture
- fiber
- inorganic plate
- added
- 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 - Fee Related
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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Producing Shaped Articles From Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は外壁材、内壁材、屋根材
等の建築用板材として用いられる無機質板の製造方法に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an inorganic plate used as a building plate such as an outer wall material, an inner wall material and a roof material.
【０００２】[0002]
【従来の技術】上記無機質板としては、従来セメント等
の水硬性無機物質に補強材として石綿を添加し成形硬化
させたものが提供されていたが、近年石綿の微粉による
環境汚染が問題視されており、石綿に代えて木片、パル
プ等の木質繊維を補強材として使用した無機質板が提供
されている（例えば特公昭３９−１２９５０号等）。2. Description of the Related Art Conventionally, as the above-mentioned inorganic plate, there has been provided a material obtained by adding asbestos as a reinforcing material to a hydraulic inorganic material such as cement and molding and hardening the same. An inorganic plate using wood fibers such as wood chips and pulp as a reinforcing material instead of asbestos has been provided (for example, Japanese Patent Publication No. 39-12950).
【０００３】しかしながら上記木質繊維は可燃物である
から、一般に添加量が５重量％を越えると耐火性が極端
に低下すると言われている。上記無機質板の補強繊維と
して金属繊維が考えられている（特開昭５８−６０６５
７号、特開平２−１９６６０５号）。上記従来技術にお
いてはセメントに金属繊維を添加してスラリーとし、こ
れを抄造するかまたは注型することによって無機質板が
製造される。However, since the above-mentioned wood fibers are combustible, it is generally said that if the added amount exceeds 5% by weight, the fire resistance is extremely reduced. Metal fibers have been considered as reinforcing fibers for the inorganic plate (Japanese Patent Application Laid-Open No. 58-6065).
7, JP-A-2-196605). In the above prior art, an inorganic plate is manufactured by adding a metal fiber to cement to form a slurry, and then forming or slurrying the slurry.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら上記金属
繊維を補強材として使用した従来例では、セメントに金
属繊維を添加してスラリーとしているため、分散性を考
慮すれば金属繊維は強い絡み合いを形成しないアスペク
ト比（長さ／線径）の小さいものに限られ、しかも小さ
いアスペクト比の金属繊維を選択してもスラリーから該
金属繊維が比重差によって沈降分離し易く、その結果金
属繊維による補強効果は充分なものが得られない。However, in the conventional example using the above metal fibers as a reinforcing material, since the metal fibers are added to the cement to form a slurry, the metal fibers do not form a strong entanglement in consideration of dispersibility. It is limited to those having a small aspect ratio (length / wire diameter), and even if a metal fiber having a small aspect ratio is selected, the metal fiber is liable to settle and separate from the slurry due to a difference in specific gravity. Not enough is available.
【０００５】[0005]
【課題を解決するための手段】本発明は上記従来の課題
を解決するための手段として、水硬性無機物質に対して
木質繊維を１〜８重量％、アスペクト比３０〜２５０の
金属繊維を１〜６重量％添加した混合物に所定量の水を
添加した上で型板上に散布してマットとし、該マットを
加圧し、圧締して加熱硬化させた後、自然養生もしくは
オートクレーブ養生する半乾式の無機質板の製造方法を
提供するものである。According to the present invention, as a means for solving the above-mentioned conventional problems, 1 to 8% by weight of a wood fiber and 1 to 5% by weight of a metal fiber having an aspect ratio of 30 to 250 with respect to a hydraulic inorganic substance. After a predetermined amount of water is added to the mixture added to the mixture, the mixture is dispersed on a template to form a mat. The mat is pressurized, pressed and heat-cured, and then subjected to natural curing or autoclave curing. It is intended to provide a method for producing a dry inorganic plate.
【０００６】〔水硬性無機物質〕本発明に用いられる水
硬性無機物質はセメント、石膏等の水和反応によって硬
化する無機物質である。上記水硬性無機物質にはケイ
砂、ケイ石粉、シリカヒューム、シラスバルーン等のケ
イ酸含有物質を添加することが望ましい。上記水硬性無
機物質と上記ケイ酸含有物質との混合比は通常４０：６
０〜６０：４０重量比とする。上記ケイ酸含有物質は水
分存在下にセメントや石膏のカルシウムとケイ酸カルシ
ウム反応によって反応して硬化を促進するものである。[Hydraulic inorganic substance] The hydraulic inorganic substance used in the present invention is an inorganic substance which is hardened by a hydration reaction of cement, gypsum or the like. It is desirable to add a silicic acid-containing substance such as silica sand, silica stone powder, silica fume, and shirasu balloon to the hydraulic inorganic substance. The mixing ratio between the hydraulic inorganic substance and the silicic acid-containing substance is usually 40: 6.
0 to 60:40 weight ratio. The silicic acid-containing substance reacts with calcium in cement or gypsum by a calcium silicate reaction in the presence of moisture to promote hardening.
【０００７】〔軽量骨材〕上記水硬性無機物質には更に
火山れき、バーミキュライト焼成物、ヒアロプサイト焼
成物、パーライト焼成物、フライアッシュ、石炭殻等の
軽量骨材が添加されてもよい。[Lightweight Aggregate] Lightweight aggregates such as volcanic rubble, calcined vermiculite, calcined hyalopsite, calcined pearlite, fly ash, and coal hull may be added to the hydraulic inorganic substance.
【０００８】〔木質繊維〕本発明に用いられる木質繊維
は木片、木毛、木質パルプ、木質繊維束等、従来から繊
維セメント板等に用いられているものである。[Wood fibers] Wood fibers used in the present invention are wood chips, wood wool, wood pulp, wood fiber bundles and the like which have been conventionally used for fiber cement boards and the like.
【０００９】〔金属繊維〕本発明に用いられる金属繊維
は鉄、銅、アルミニウム、ステンレススチール等の金属
または合金の繊維であるが、耐蝕性を考慮すればステン
レススチール繊維は好ましい金属繊維である。そして本
発明ではアスペクト比が３０〜２５０の金属繊維が用い
られる。アスペクト比が３０未満では金属繊維の絡み合
いが充分でなく、したがって補強効果も充分でない。ま
たアスペクト比が２５０を越えると金属繊維の絡み合い
が強すぎて均一な混合物が得られにくゝなる。[Metal Fiber] The metal fiber used in the present invention is a metal or alloy fiber such as iron, copper, aluminum, and stainless steel. Stainless steel fiber is a preferable metal fiber in consideration of corrosion resistance. In the present invention, metal fibers having an aspect ratio of 30 to 250 are used. If the aspect ratio is less than 30, the entanglement of the metal fibers is not sufficient, and the reinforcing effect is not sufficient. On the other hand, if the aspect ratio exceeds 250, the entanglement of the metal fibers is too strong to obtain a uniform mixture.
【００１０】〔製造方法〕上記水硬性無機物質、木質繊
維、金属繊維、そして所望なれば軽量骨材とは均一に混
合され、該混合物には所定量の水が添加された上で型板
上に散布される。上記木質繊維は上記混合物中に１〜８
重量％で添加される。木質繊維が１重量％未満では得ら
れる無機質板の強度が充分でなく、また８重量％を越え
ると耐火性が劣化する。上記金属繊維は上記混合物中に
１〜６重量％望ましくは３〜４重量％添加される。金属
繊維が１重量％未満では上記木質繊維の添加量範囲で耐
火性が充分でなく、６重量％を越えると重量が増大する
しまた切断加工性が悪くなる。上記水分は上記水硬性無
機物質が硬化するために充分な量添加されるべきであ
り、通常は上記混合物中に３０〜４５重量％となるよう
に添加される。[Production method] The above-mentioned hydraulic inorganic substance, wood fiber, metal fiber and, if desired, light-weight aggregate are uniformly mixed, and a predetermined amount of water is added to the mixture. Sprayed on. The wood fibers are 1 to 8 in the mixture.
It is added in weight%. If the wood fiber content is less than 1% by weight, the strength of the obtained inorganic plate is not sufficient, and if it exceeds 8% by weight, the fire resistance deteriorates. The metal fiber is added to the mixture in an amount of 1 to 6% by weight, preferably 3 to 4% by weight. If the metal fiber content is less than 1% by weight, the fire resistance is not sufficient within the above-mentioned range of the wood fiber content. If it exceeds 6% by weight, the weight increases and the cutting processability deteriorates. The water should be added in an amount sufficient for the hydraulic inorganic material to be hardened, and is usually added in an amount of 30 to 45% by weight in the mixture.
【００１１】上記したように該混合物は水分を添加され
た上で下型板上にマット状に散布され、該マットは所望
なればロール等によって若干押圧されてから上型板を載
置し、通常圧力２０〜３０Kgf ／cm2Gで加圧後、クラン
ピングして圧締加熱して硬化される。加熱条件は通常温
度６０〜８０℃、時間２０〜３０時間程度であり、加熱
は通常蒸気によって行なわれる。上記圧締加熱により無
機質板中の水硬性無機物質は略硬化するが、更に該硬化
を完全に進めるために、その後自然養生して１〜２週間
養生するかオートクレーブ養生を行なう。オートクレー
ブ養生の条件は通常圧力７〜１０Kgf ／cm2G、温度１６
０〜１８０℃、時間５〜１０時間である。このようにし
て本発明の無機質板が製造されるが、本発明の無機質板
にあっては下型板および／または上型板の面に凹凸模様
を付することによって該無機質板の表面に凹凸模様を付
してもよい。As described above, the mixture is sprinkled on a lower mold plate in the form of a mat after adding water, and the mat is slightly pressed by a roll or the like, if necessary, and then the upper mold plate is placed thereon. Usually, after pressurizing at a pressure of 20 to 30 kgf / cm 2 G, it is cured by clamping, heating and pressing. The heating conditions are usually a temperature of 60 to 80 ° C. and a time of about 20 to 30 hours, and the heating is usually performed by steam. The hydraulic inorganic substance in the inorganic plate is substantially hardened by the above-mentioned pressing and heating, but in order to further advance the hardening, natural hardening is then performed, followed by hardening for one to two weeks or autoclave hardening. The conditions for autoclaving are usually a pressure of 7 to 10 kgf / cm 2 G and a temperature of 16
0-180 ° C, time 5-10 hours. Thus, the inorganic plate of the present invention is manufactured. In the inorganic plate of the present invention, the surface of the lower mold plate and / or the upper mold plate is provided with an uneven pattern so that the surface of the inorganic plate is uneven. You may attach a pattern.
【００１２】[0012]
【作用】本発明においては、水硬性無機物質、木質繊維
および金属繊維を主体とする混合物をスラリー状とする
ことなく所定量の水を添加し、型板上に散布してマット
とする半乾式法が適用されるから、アスペクト比が２５
０までの絡み合いの強い金属繊維が使用出来、そして該
金属繊維は分離することなく均一な混合物が得られる。In the present invention, a predetermined amount of water is added to a mixture mainly composed of hydraulic inorganic substance, wood fiber and metal fiber without forming a slurry, and the mixture is dispersed on a template to form a mat. Since the law is applied, the aspect ratio is 25
Strongly entangled metal fibers up to zero can be used, and the metal fibers give a homogeneous mixture without separation.
【００１３】その結果として金属繊維の添加量を得られ
る無機質板の重量が大きくならない程度の最小限、即ち
６重量％以下としても、金属繊維の補強効果により無機
質板の強度は大きくなる。該金属繊維はそれ自体の不燃
性と、良好な熱導伝性にもとづく熱分散作用により、木
質繊維を５重量％以上８重量％まで添加しても無機質板
に良好な耐火性を与える。As a result, the strength of the inorganic plate is increased by the reinforcing effect of the metal fibers, even if the amount of the metal fiber added is set to a minimum that does not increase the weight of the inorganic plate, ie, 6% by weight or less. Due to the non-combustibility of the metal fiber itself and the heat dispersing action based on good thermal conductivity, even if the wood fiber is added in an amount of from 5% by weight to 8% by weight, the inorganic plate has good fire resistance.
【００１４】[0014]
〔実施例および比較例〕表１の組成を混合し、該混合物
に水を添加して含水率４０重量％とした上で下型板上に
散布して厚さ５５mmのマットとし、該マット上に上型板
を当接し、圧力２０Kgf ／cm2Gで加圧後、クランピング
して圧締加熱する。加熱条件は温度７０℃にて２５時間
圧締加熱硬化を行なう。得られた板状体は厚さ１５mmで
あり、該板状体はその後オートクレーブ中にて蒸気圧力
７．２Kgf ／cm2G、温度１６５℃にて７時間養生され
る。このようにして得られた無機質板について物性およ
び耐火性を試験した。その結果は表１に示される。[Examples and Comparative Examples] The compositions shown in Table 1 were mixed, water was added to the mixture to make the water content 40% by weight, and then the mixture was sprayed on a lower mold plate to form a mat having a thickness of 55 mm. , And pressurized at a pressure of 20 kgf / cm 2 G, then clamped and heated by pressing. Heating is performed by pressing and curing at 70 ° C. for 25 hours. The plate obtained is 15 mm thick and is then cured in an autoclave at a steam pressure of 7.2 kgf / cm 2 G and a temperature of 165 ° C. for 7 hours. The physical properties and fire resistance of the obtained inorganic plate were tested. The results are shown in Table 1.
【００１５】[0015]
【表１】 [Table 1]
【００１６】表１によれば、ステンレススチール繊維を
含まない比較例は難燃性、耐火性において極めて劣る結
果をみたが、本発明の実施例１，２においては優れた難
燃性、耐火性が得られる。According to Table 1, the comparative example containing no stainless steel fiber showed extremely inferior flame retardancy and fire resistance. However, in Examples 1 and 2 of the present invention, excellent flame retardancy and fire resistance were obtained. Is obtained.
【００１７】[0017]
【発明の効果】したがって本発明においては耐火性が極
めて大きくかつ強度の高いしかも軽量な無機質板が得ら
れる。As described above, according to the present invention, a lightweight inorganic plate having extremely high fire resistance and high strength can be obtained.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０４Ｂ 16:02 14:48） ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification number Agency reference number FI Technical display location C04B 16:02 14:48)
Claims (1)
重量％、アスペクト比３０〜２５０の金属繊維を１〜６
重量％添加した混合物に所定量の水を添加した上で型板
上に散布してマットとし、該マットを加圧し、圧締して
加熱硬化させた後、自然養生もしくはオートクレーブ養
生することを特徴とする無機質板の製造方法1. A wood fiber is used in an amount of 1 to 8 with respect to a hydraulic inorganic substance.
1% to 6% by weight of a metal fiber having an aspect ratio of 30 to 250.
After adding a predetermined amount of water to the mixture added by weight, the mixture is sprayed on a template to form a mat. The mat is pressurized, pressed and heat-cured, and then cured naturally or autoclaved. Method for producing inorganic plate
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17179292A JP2601785B2 (en) | 1992-06-05 | 1992-06-05 | Manufacturing method of inorganic plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17179292A JP2601785B2 (en) | 1992-06-05 | 1992-06-05 | Manufacturing method of inorganic plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05339040A JPH05339040A (en) | 1993-12-21 |
| JP2601785B2 true JP2601785B2 (en) | 1997-04-16 |
Family
ID=15929786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17179292A Expired - Fee Related JP2601785B2 (en) | 1992-06-05 | 1992-06-05 | Manufacturing method of inorganic plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2601785B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7178597B2 (en) * | 2004-07-02 | 2007-02-20 | Halliburton Energy Services, Inc. | Cement compositions comprising high aspect ratio materials and methods of use in subterranean formations |
-
1992
- 1992-06-05 JP JP17179292A patent/JP2601785B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05339040A (en) | 1993-12-21 |
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