JPH0256298B2 - - Google Patents
Info
- Publication number
- JPH0256298B2 JPH0256298B2 JP61088036A JP8803686A JPH0256298B2 JP H0256298 B2 JPH0256298 B2 JP H0256298B2 JP 61088036 A JP61088036 A JP 61088036A JP 8803686 A JP8803686 A JP 8803686A JP H0256298 B2 JPH0256298 B2 JP H0256298B2
- Authority
- JP
- Japan
- Prior art keywords
- calcium silicate
- manufacturing
- asbestos
- amount
- filler
- 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
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 239000000378 calcium silicate Substances 0.000 claims description 17
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 17
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 7
- 229920001131 Pulp (paper) Polymers 0.000 claims description 6
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- 239000010456 wollastonite Substances 0.000 claims description 5
- 229910052882 wollastonite Inorganic materials 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 4
- 239000012783 reinforcing fiber Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000010025 steaming Methods 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 239000010425 asbestos Substances 0.000 description 14
- 229910052895 riebeckite Inorganic materials 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 3
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 235000012222 talc Nutrition 0.000 description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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
- C04B28/18—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 mixtures of the silica-lime type
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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
産業上の利用分野
本発明は、ケイ酸カルシウム質フロア板の製造
法に関するものである。
従来の技術
ケイ酸カルシウム質板状成形体からなるフロア
板は公知であるが、従来のものは、石綿を補強材
に用いることにより床材として必要な強度を確保
したものであつた。
石綿を補強材に用いたケイ酸カルシウム板は、
石綿のすぐれた補強作用により強度と加工性がす
ぐれ、また製造も容易であるが、近年、資源の枯
渇あるいは切断加工時に飛散する石綿による環境
汚染などの問題から石綿の使用が困難になるにつ
れて、石綿を使用せずに、石綿使用品と同等の性
能を有するケイ酸カルシウム系フロア板を製造す
る方法の開発が望まれるようになつた。しかしな
がら、石綿以外の繊維を補強材として用いた場合
は、原料混合物の成形性が悪化するとともに、製
品が切削、穿孔等の二次加工に耐えられず、曲げ
強度も劣るものとなり易い。曲げ強度の不足は鉄
板を裏張りすることで補うことができる。二次加
工性低下の問題を解決することは至難であつた。
発明が解決しようとする問題点
本発明の目的は、石綿を使用せずにケイ酸カル
シウム質フロア板を製造する場合における上述の
ような課題を克服し、強度と二次加工性の両面で
石綿使用品に匹敵するフロア板の製造法を提供す
ることにある。
問題点を解決するための手段
上記目的を達成することに成功した本発明のフ
ロア板製造法は、ケイ酸質原料および石灰質原料
に特定の充填材および補強用繊維を特定量配合し
たケイ酸カルシウム質成形体形成性水性スラリー
を脱水プレス成形したのち蒸熱処理してフロア板
を得るものであつて、充填材として５〜25％の繊
維状ウオラスナイトおよび10〜15％のタルク粉末
を用い、補強用繊維として４〜８％の木材パルプ
を用いることを特徴とする（但し％はスラリー中
の全固形分当りの重量％を意味する）。
以下、この製法を工程順に説明する。
ケイ質原料および石灰質原料としては、各種ケ
イ酸カルシウム成形体の製造に普通に用いられる
もの、例えばケイ石粉末、シリコンダスト、フエ
ロシリコンダスト、消石灰、生石灰、セメント等
を用いることができる。これらケイ酸質原料およ
び石灰質原料は、望ましくはCaO／SiO2がモル
比で1.0±0.2になるような比率で配合する。
繊維状ウオラストナイトとしては、市販品たと
えば米国インターペース社のNYARD−Ｇやイ
ンドのウオルケムプライベート社のケモリツト
を、そのまま用いることができる。本発明の製法
において、繊維状ウオラストナイトは、成形性を
よくするとともに、一定の添加率までは製品強度
を向上させるのに役立つ。さらに、僅かではある
が二次加工性をよくする作用もある。適量は５〜
25％、特に好ましい量は10〜25％である。
タルク粉末としては、普通に市販されている
325メツシユ篩通過程度（平均粒径10μ程度）の
ものを使うことができる。本発明の製法におい
て、タルク粉末は、そのへき開性に基づき、製品
の切削加工時に生じる割れの伝播を防ぐととも
に、切削面と工具との間で固体潤滑剤として作用
し、快削性を実現する。但し製品強度を低下させ
る傾向があり、効果が顕著で強度低下が許容でき
る10〜15％の範囲で使われる。
補強用の木材パルプとしては、針葉樹の未漂白
クラフトパルプが補強力大であり最も好ましい
が、これらに限られるわけではない。補強用繊維
は、多すぎると製品の密度を低くするとともにケ
イ酸カルシウムの水和反応を阻害して強度低下を
招くもので、その配合率は８％以下、望ましくは
５〜７％とする。木材パルプは単に補強作用がす
ぐれているだけでなく、微粉末状原料が脱水成形
時に漏出するのを抑制する能力がすぐれている。
木材パルプはその一部を他の有機繊維または無機
繊維にかえてもよいが、石綿を併用することはも
ちろん好ましくない。
上記の諸原料は、重量比で約２〜４倍量の水と
よく混合してスラリー化する。
原料スラリーの成形は、脱水プレス法によるケ
イ酸カルシウム系板状成形体成形の常法に従つて
行うことができる。
得られた生成形体は型から取出し、５〜10Kg／
cm2程度の水蒸気により約７〜14時間処理して、含
水ケイ酸カルシウム結晶をマトリツクスとする硬
化物を形成させる。この蒸熱養性のあと乾燥し
て、ケイ酸カルシウム質フロア板を得る。
本発明の製法によるフロア板は、そのままでフ
ロア板として使うこともできるが、製造後または
製造工程の任意の段階で、裏面から鉄板で補強し
ておけば、より高度の耐荷重強度を有するものと
なる。
発明の効果
本発明の製法によれば、石綿を補強に用いたも
のに匹敵する二次加工性を有するケイ酸カルシウ
ム質フロア板を、石綿を全く使用することなしに
容易に製造することが可能である。
したがつて、本発明によれば製造工程および製
品の二次加工工程における石綿粉塵発生が原因の
健康障害のおそれもなくなり、断熱性、制電性、
不燃性など多くの特長を有し歩行感もすぐれてい
るケイ酸カルシウム質フロア板を従来以上に広く
利用することが可能になる。
実施例
以下、実施例を示して本発明を説明する。
実施例 １
ケイ石粉末、消石灰（CaO／SiO2＝１）、充填
材および針葉樹末漂白パルプ（全固形分当り６
％）の混合物に３倍量の水を加えて撹拌し、得ら
れた原料スラリーを型枠に入れ、プレス圧5000
Kg／cm2でプレスして厚さ15mmの板状に成形する。
得られた生成生体をオートクレーブに移し、10
Kg／cm2の水蒸気圧下で９時間蒸熱養生した後、
105℃で乾燥する。
上記方法によりフロア板を製造した場合、充填
材として繊維状ウオラストナイト、タルク粉末ま
たはこれらの両方を用いたときの製品物性の変化
は第１表および第２表のとおりで、ウオラストナ
イトとタルクの併用によつて初めて、二次加工性
がよく強度もあるフロア板が得られた。
またの場合、脱水成形工程における漏れによる
粉体原料の損失は１〜３％程度であつたが、木材
パルプのかわりに岩綿、耐アルカリ性ガラス繊
維、レーヨンスフ等を用いると、損失量は５〜12
％であつた（但しウオラストナイトとタルクを10
％ずつ配合した場合）。
INDUSTRIAL APPLICATION FIELD OF THE INVENTION The present invention relates to a method for manufacturing calcium silicate floorboards. BACKGROUND OF THE INVENTION Floor boards made of calcium silicate plate-shaped molded bodies are known, but the conventional ones have secured the strength necessary for flooring by using asbestos as a reinforcing material. Calcium silicate plates using asbestos as a reinforcing material are
Asbestos has excellent strength and workability due to its excellent reinforcing properties, and is easy to manufacture. However, in recent years, asbestos has become difficult to use due to problems such as resource depletion and environmental pollution caused by asbestos scattered during cutting. It has become desirable to develop a method for manufacturing a calcium silicate floor board that does not use asbestos and has the same performance as products that use asbestos. However, when fibers other than asbestos are used as a reinforcing material, the moldability of the raw material mixture deteriorates, and the product is likely to be unable to withstand secondary processing such as cutting and perforation, and its bending strength is likely to be poor. The lack of bending strength can be compensated for by lining it with a steel plate. It has been extremely difficult to solve the problem of decreased secondary workability. Problems to be Solved by the Invention The purpose of the present invention is to overcome the above-mentioned problems in manufacturing calcium silicate floor boards without using asbestos, and to overcome the problems described above when manufacturing calcium silicate floor boards without using asbestos. The purpose is to provide a method for manufacturing floor boards comparable to used products. Means for Solving the Problems The floor board manufacturing method of the present invention, which has succeeded in achieving the above object, consists of calcium silicate, which is made by blending specific amounts of specific fillers and reinforcing fibers with silicate raw materials and calcareous raw materials. A floor board is obtained by dehydrating and press-molding a quality molded body-forming aqueous slurry and then steaming it, using 5 to 25% fibrous volasnite and 10 to 15% talc powder as fillers for reinforcement. It is characterized by using 4 to 8% of wood pulp as the fiber (where % means weight % based on the total solid content in the slurry). Hereinafter, this manufacturing method will be explained step by step. As the siliceous raw material and calcareous raw material, those commonly used in the production of various calcium silicate molded bodies, such as silica powder, silicon dust, ferrosilicon dust, slaked lime, quicklime, and cement, can be used. These siliceous raw materials and calcareous raw materials are desirably blended in such a ratio that the molar ratio of CaO/SiO 2 is 1.0±0.2. As the fibrous wollastonite, commercially available products such as NYARD-G manufactured by Interpace, Inc. in the United States and Chemorite manufactured by Walchem Private Limited in India can be used as they are. In the production method of the present invention, fibrous wollastonite improves moldability and is useful for improving product strength up to a certain addition rate. Furthermore, it also has the effect of improving secondary processability, albeit slightly. The appropriate amount is 5~
25%, particularly preferred amounts are 10-25%. Talc powder is commonly available commercially.
A material that can pass through a 325 mesh sieve (average particle size of about 10μ) can be used. In the manufacturing method of the present invention, talcum powder prevents the propagation of cracks that occur during cutting of the product due to its cleavability, and also acts as a solid lubricant between the cutting surface and the tool, achieving free machinability. . However, it tends to reduce the strength of the product, so it is used within a range of 10 to 15% where the effect is significant and the strength reduction is acceptable. As the reinforcing wood pulp, unbleached coniferous kraft pulp is most preferable as it has great reinforcing power, but it is not limited to these. If the amount of reinforcing fiber is too large, it will lower the density of the product and inhibit the hydration reaction of calcium silicate, resulting in a decrease in strength, so the blending ratio should be 8% or less, preferably 5 to 7%. Wood pulp not only has an excellent reinforcing effect, but also has an excellent ability to suppress leakage of fine powder raw materials during dehydration and molding.
Although a portion of the wood pulp may be replaced with other organic or inorganic fibers, it is of course not preferable to use asbestos in combination. The above raw materials are thoroughly mixed with water in an amount of about 2 to 4 times by weight to form a slurry. The raw material slurry can be shaped according to the conventional method of forming a calcium silicate plate-shaped body by a dehydrating press method. The obtained green body is taken out from the mold and weighs 5 to 10 kg/
A cured product having a matrix of hydrated calcium silicate crystals is formed by treatment with water vapor of about cm 2 for about 7 to 14 hours. This steam-curing process is followed by drying to obtain a calcium silicate floorboard. The floor board manufactured by the method of the present invention can be used as a floor board as is, but if it is reinforced with a steel plate from the back side after manufacturing or at any stage during the manufacturing process, it will have a higher load-bearing strength. becomes. Effects of the Invention According to the manufacturing method of the present invention, it is possible to easily manufacture calcium silicate floor boards that have secondary processability comparable to those using asbestos for reinforcement, without using asbestos at all. It is. Therefore, according to the present invention, there is no fear of health problems caused by the generation of asbestos dust during the manufacturing process and the secondary processing process of products, and the present invention has improved insulation, antistatic,
Calcium silicate floorboards, which have many features such as non-combustibility and provide an excellent walking feel, can now be used more widely than ever before. Examples Hereinafter, the present invention will be explained with reference to Examples. Example 1 Silica stone powder, slaked lime (CaO/SiO 2 = 1), filler and bleached softwood pulp (6% per total solids)
%), add 3 times the amount of water and stir, put the obtained raw material slurry into a mold and press at a pressure of 5000.
Press at Kg/cm 2 and form into a plate with a thickness of 15 mm.
Transfer the obtained living organism to an autoclave and incubate for 10
After steam curing for 9 hours under water vapor pressure of Kg/ cm2 ,
Dry at 105℃. Tables 1 and 2 show the changes in product physical properties when fibrous wollastonite, talc powder, or both are used as fillers when manufacturing floor boards using the above method. By using talc in combination, a floor board with good secondary processability and strength was obtained for the first time. In this case, the loss of powder raw material due to leakage during the dehydration molding process was about 1 to 3%, but if rock wool, alkali-resistant glass fiber, rayon cloth, etc. were used instead of wood pulp, the loss was about 5 to 3%. 12
% (however, wollastonite and talc were added at 10%).
%).
【表】【table】
【表】【table】
Claims (1)
強用繊維を主材とするケイ酸カルシウム成形体形
成性の水性スラリーを脱水プレス成形したのち蒸
熱処理してケイ酸カルシウム質フロア板を製造す
るに当たり、スラリー中の全固形分基準で５〜25
重量％の繊維状ウオラストナイトおよび10〜15重
量％のタルク粉末を充填材として、また４〜６重
量％の木材パルプを補強用繊維として、それぞれ
用いることを特徴とするケイ酸カルシウム系フロ
ア板の製造法。1. In producing a calcium silicate floor board by dehydrating press molding an aqueous slurry capable of forming a calcium silicate molded body, which is mainly composed of a silicic acid raw material, a calcareous raw material, a filler, and a reinforcing fiber, and then steaming it. , 5 to 25 based on the total solid content in the slurry
A calcium silicate floor board characterized by using fibrous wollastonite in an amount of 10 to 15% by weight as a filler, and talc powder in an amount of 10 to 15% by weight as a filler, and wood pulp as a reinforcing fiber in an amount of 4 to 6% by weight. manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8803686A JPS62246855A (en) | 1986-04-18 | 1986-04-18 | Manufacture of floor board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8803686A JPS62246855A (en) | 1986-04-18 | 1986-04-18 | Manufacture of floor board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62246855A JPS62246855A (en) | 1987-10-28 |
| JPH0256298B2 true JPH0256298B2 (en) | 1990-11-29 |
Family
ID=13931597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8803686A Granted JPS62246855A (en) | 1986-04-18 | 1986-04-18 | Manufacture of floor board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62246855A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07115902B2 (en) * | 1988-05-06 | 1995-12-13 | 信越化学工業株式会社 | Cement composition for extrusion molding |
| JP2506208B2 (en) * | 1988-12-28 | 1996-06-12 | 株式会社アスク | Asbestos inorganic cured product and method for producing the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51114426A (en) * | 1975-03-31 | 1976-10-08 | Matsushita Electric Works Ltd | Solid compound |
| JPS54109653A (en) * | 1978-01-30 | 1979-08-28 | Johns Manville | Highhdensity nonnasbestos tvelumolite heat insulator |
| JPS58156567A (en) * | 1982-03-10 | 1983-09-17 | 松下電工株式会社 | Manufacture of fiber reinforced cement board |
| JPS5964558A (en) * | 1982-09-30 | 1984-04-12 | 三菱電機株式会社 | Manufacture of heat-resistant soft composite body |
| JPS6126547A (en) * | 1984-07-13 | 1986-02-05 | ニチアス株式会社 | Manufacture of cementitious board |
-
1986
- 1986-04-18 JP JP8803686A patent/JPS62246855A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51114426A (en) * | 1975-03-31 | 1976-10-08 | Matsushita Electric Works Ltd | Solid compound |
| JPS54109653A (en) * | 1978-01-30 | 1979-08-28 | Johns Manville | Highhdensity nonnasbestos tvelumolite heat insulator |
| JPS58156567A (en) * | 1982-03-10 | 1983-09-17 | 松下電工株式会社 | Manufacture of fiber reinforced cement board |
| JPS5964558A (en) * | 1982-09-30 | 1984-04-12 | 三菱電機株式会社 | Manufacture of heat-resistant soft composite body |
| JPS6126547A (en) * | 1984-07-13 | 1986-02-05 | ニチアス株式会社 | Manufacture of cementitious board |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62246855A (en) | 1987-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2010222190A (en) | Method for producing calcium silicate board | |
| JPH0256298B2 (en) | ||
| JP2956039B2 (en) | Manufacturing method of wet cement board | |
| CN116239361A (en) | Calcium silicate board prepared by using calcium silicate fiber crystals and preparation method thereof | |
| JP5000902B2 (en) | Lightweight inorganic plate and method for producing the same | |
| JP5118738B2 (en) | Wood cement board and manufacturing method thereof | |
| JPH02141454A (en) | Production of high-strength calcium silicate molded body | |
| JP4127749B2 (en) | Calcium silicate material for inner wall material or ceiling material and method for producing the same | |
| JPH0780166B2 (en) | Manufacturing method of calcium silicate compact | |
| JP2019151521A (en) | Calcium silicate plate and method for producing the same | |
| JP2004010402A (en) | Fiber-containing gypsum board and its manufacturing process | |
| JP4886196B2 (en) | Manufacturing method of lightweight inorganic board | |
| JP4312872B2 (en) | Calcium silicate molded body and method for producing the same | |
| JP3376410B2 (en) | Natural porous soil wall material and its dry production method | |
| JPH0354978B2 (en) | ||
| JPS61261247A (en) | Manufacture of cementitious board | |
| JP3550269B2 (en) | Manufacturing method of inorganic plate | |
| JP2601781B2 (en) | Cement fiberboard | |
| KR100885202B1 (en) | Preparation method of slag board having no asbestos | |
| CN116283127A (en) | Plant fiber reinforced calcium silicate board with high hanging property and preparation method thereof | |
| JPS6374949A (en) | Manufacture of calcium silicate formed body | |
| CN1029223C (en) | Mixture for manufacture of shaped articles | |
| JP4249833B2 (en) | Method for producing calcium silicate molded body | |
| CN117510174A (en) | Novel calcium silicate board for passive fireproof system | |
| JP4814411B2 (en) | Calcium silicate plate and method for producing the same |