JP2003211425A - Method for producing inorganic concrete plate - Google Patents
Method for producing inorganic concrete plateInfo
- Publication number
- JP2003211425A JP2003211425A JP2002017802A JP2002017802A JP2003211425A JP 2003211425 A JP2003211425 A JP 2003211425A JP 2002017802 A JP2002017802 A JP 2002017802A JP 2002017802 A JP2002017802 A JP 2002017802A JP 2003211425 A JP2003211425 A JP 2003211425A
- Authority
- JP
- Japan
- Prior art keywords
- inorganic cement
- cement
- producing
- inorganic
- slurry
- 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
Landscapes
- Producing Shaped Articles From Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、瓦や外装材等の建
築材料として用いられる無機質セメント板の製造方法に
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 cement board used as a building material such as roof tiles and exterior materials.
【０００２】[0002]
【従来の技術】従来から瓦や外装材等の建築材料として
の無機質セメント板の曲げ強度を向上させるためにセメ
ントを主材として補強繊維としてのパルプ繊維を水に分
散してスラリーとなし、このスラリーを抄造して脱水し
て無機質セメント生板を成形し、その後この無機質セメ
ント生板をプレス機により圧締して養生硬化して無機質
セメント板を製造する無機質セメント板の製造方法は、
知られている。しかしながら、例えばセメント８０重量
％、パルプ繊維２０重量％を水に分散してスラリーとな
し、このスラリーを抄造して脱水して無機質セメント生
板を成形し、その後この無機質セメント生板をプレス機
により圧締して養生硬化して無機質セメント板を製造す
ると曲げ強度が３２ＭＰａであった。同様にして、セメ
ント５０重量％、パルプ繊維５０重量％とすると曲げ強
度が３４ＭＰａであった。2. Description of the Related Art Conventionally, in order to improve the bending strength of an inorganic cement board as a building material such as a roof tile and an exterior material, pulp is used as a main material and pulp fibers as reinforcing fibers are dispersed in water to form a slurry. A method for producing an inorganic cement board for producing an inorganic cement board by molding the slurry to dehydrate and molding the inorganic cement board, then pressing and curing this inorganic cement board with a press machine,
Are known. However, for example, 80% by weight of cement and 20% by weight of pulp fiber are dispersed in water to form a slurry, and the slurry is made into paper and dehydrated to form an inorganic cement green plate, and then this inorganic cement green plate is pressed by a press machine. When the inorganic cement board was manufactured by pressing and curing and curing, the bending strength was 32 MPa. Similarly, when the cement content was 50% by weight and the pulp fiber content was 50% by weight, the bending strength was 34 MPa.
【０００３】このようにセメントとパルプ繊維とを多く
すると曲げ強度は強くなるが、不燃性に問題があった。
又、珪砂やパーライト等の骨材を混入するとさらに曲げ
強度が下がるという問題があった。これは、パルプ繊維
は繊維とセメントとの親和性が低く、繊維の比表面積が
小さいため、セメント等のマトリックスとの密着力が弱
いためである。又、スラリーの濃度が高いほど、パルプ
繊維の分散が困難になり、曲げ強度に悪影響を与えてい
た。When the amount of cement and pulp fiber is increased in this way, the bending strength becomes strong, but there is a problem in noncombustibility.
Further, there has been a problem that the bending strength is further lowered when an aggregate such as silica sand or pearlite is mixed. This is because the pulp fiber has a low affinity between the fiber and the cement, and the specific surface area of the fiber is small, so that the adhesive force with the matrix such as the cement is weak. Further, the higher the concentration of the slurry, the more difficult it becomes to disperse the pulp fibers, which adversely affects the bending strength.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記問題点の
解決を目的とするものであり、セメントと珪石紛とを主
成分として、補強繊維を配合した材料を高濃度のスラリ
ー濃度に調整したスラリーを抄造して無機質セメント生
板を成形し、該無機質セメント生板を養生硬化して無機
質セメント板を製造する無機質セメント板の製造方法に
おいて、パルプ繊維とセメントとの親和性を改良して高
強度で不燃性の高い無機質セメント板の製造方法を提供
するものである。SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and a material containing cement and silica powder as main components and reinforcing fibers is adjusted to a high concentration slurry concentration. In a method for producing an inorganic cement plate by forming a slurry to form an inorganic cement green plate and curing and curing the inorganic cement green plate to improve the affinity between pulp fiber and cement to be high. It is intended to provide a method for producing an inorganic cement board that is strong and highly incombustible.
【０００５】[0005]
【課題を解決するための手段】本発明の請求項１記載の
無機質セメント板の製造方法は、セメントと珪石紛とを
主成分として、補強繊維を配合した材料を高濃度のスラ
リー濃度に調整したスラリーを抄造して無機質セメント
生板を成形し、該無機質セメント生板を養生硬化して無
機質セメント板を製造する無機質セメント板の製造方法
において、補強繊維としてディスクリファイナーにて解
繊・叩解したパルプ繊維を配合することを特徴とする方
法である。In the method for producing an inorganic cement board according to the first aspect of the present invention, a material containing cement and silica powder as main components and reinforcing fibers is adjusted to a high slurry concentration. In a method for producing an inorganic cement plate by forming a slurry to form an inorganic cement green plate, and curing and curing the inorganic cement green plate, a pulp defibrated and beaten by a disc refiner as a reinforcing fiber. This is a method characterized by blending fibers.
【０００６】したがって、セメントと珪石紛とを主成分
としても、ディスクリファイナーにてパルプ繊維を解繊
・叩解しているので、パルプ繊維とセメントとの親和性
が改良され高強度で且つ不燃性の高い無機質セメント板
が得られるものである。Therefore, even if cement and silica powder are the main components, since the pulp fiber is defibrated and beaten by the disc refiner, the affinity between the pulp fiber and the cement is improved, and the pulp fiber has high strength and is nonflammable. A high inorganic cement board can be obtained.
【０００７】本発明の請求項２記載の無機質セメント板
の製造方法は、請求項１記載の高濃度のスラリー濃度が
３０乃至６０％に調整したことを特徴とするものであ
る。The method for producing an inorganic cement board according to a second aspect of the present invention is characterized in that the high concentration slurry concentration according to the first aspect is adjusted to 30 to 60%.
【０００８】したがって、スラリー濃度が高い場合に
は、パルプ繊維の叩解度を上げると曲げ強度が高いもの
となる。Therefore, when the slurry concentration is high, the bending strength becomes high when the beating degree of the pulp fiber is increased.
【０００９】[0009]
【発明の実施の形態】図１及び図２に示したように、本
発明の無機質セメント板の製造方法は、セメント１と珪
石紛２とを主成分として、補強繊維３を配合した材料を
高濃度のスラリー濃度に調整したスラリー４を抄造して
無機質セメント生板５を成形し、この無機質セメント生
板５を養生室６で養生硬化して無機質セメント板７を製
造する無機質セメント板の製造方法において、補強繊維
としてディスクリファイナーにて解繊・叩解したパルプ
繊維を配合することを特徴とするものである。尚、養生
室６に入る前にプレス機８で模様付けを行っても良い。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, in the method for producing an inorganic cement board of the present invention, a material containing cement 1 and silica stone powder 2 as main components and reinforcing fibers 3 mixed therein is used. A method for manufacturing an inorganic cement plate, in which a slurry 4 adjusted to a slurry concentration is formed into a paper to form an inorganic cement green plate 5, and the inorganic cement green plate 5 is cured and hardened in a curing chamber 6 to produce an inorganic cement plate 7. In the above, the pulp fiber defibrated and beaten by a disc refiner is blended as a reinforcing fiber. The press machine 8 may be used for patterning before entering the curing room 6.
【００１０】このとき、セメント１はポルトランドセメ
ント等が用いられセメント１が４０重量％、珪石紛２が
４０重量％を主成分として、補強繊維３としてディスク
リファイナーにて解繊・叩解したパルプ繊維が７〜８重
量％を水と配合して長網式抄造機や、丸網式抄造機で抄
造して無機質セメント生板５を成形し、この無機質セメ
ント生板５を養生硬化して無機質セメント板７を製造す
るものである。At this time, as the cement 1, Portland cement or the like is used, with 40% by weight of cement 1 and 40% by weight of silica powder 2 as main components, and pulp fibers defibrated and beaten by a disc refiner as reinforcing fibers 3 are used. 7-8% by weight of water is blended with water to form an inorganic cement raw board 5 by making a paper with a Fourdrinier paper making machine or a round netting paper making machine, and the inorganic cement raw board 5 is cured and cured to obtain an inorganic cement board. 7 is manufactured.
【００１１】さらに、図２のように、この高濃度のスラ
リー濃度に調整したスラリー４を従来の無機質セメント
生板５上に積層して無機質セメント化粧板９を製造する
ようにすればより曲げ強度の高い無機質セメント化粧板
９を製造することができる。（実施例）Further, as shown in FIG. 2, if the slurry 4 adjusted to the high slurry concentration is laminated on the conventional inorganic cement raw board 5 to produce the inorganic cement decorative board 9, the bending strength is further improved. It is possible to manufacture a high-quality inorganic cement decorative board 9. (Example)
【００１２】水とパルプ繊維とを混練し、このパルプ繊
維をパルパーにて解繊し、さらにディスクリファイナー
にて叩解した後、ポルトランドセメントと珪石紛とを
１：１の割合で混合してスラリーとする。このスラリー
を長網式抄造機で抄造・脱水して無機質セメント生板を
成形する。その後、この無機質セメント生板を１５０ｋ
ｇｆ/ｃｍ２でプレスし、１７０℃、５時間オートクレ
ーブ養生にて無機質セメント板を得た。このサンプルに
ついて、ディスクリファイナーによる叩解条件を変え、
種々の叩解度のパルプにて評価を行った。この叩解度
は、カナダ標準ろ水度（ＣＳＦ）で７００ｍｌ、５００
ｍｌ、３００ｍｌの３水準で行い、スラリー濃度は１０
％、４０％の２水準にて行った。その結果、下表１のよ
うにスラリー濃度とパルプ繊維の叩解度と曲げ強度との
関係が示された。After water and pulp fibers are kneaded, the pulp fibers are defibrated with a pulper, beaten with a disc refiner, and Portland cement and silica powder are mixed at a ratio of 1: 1 to form a slurry. To do. This slurry is subjected to paper making and dehydration with a Fourdrinier paper making machine to form an inorganic cement green board. After that, 150k of this inorganic cement raw board
It was pressed at gf / cm 2 and cured at 170 ° C. for 5 hours in an autoclave to obtain an inorganic cement board. For this sample, change the beating condition by the disc refiner,
The evaluation was performed with pulps of various beating degrees. This freeness is 700 ml in Canadian Standard Freeness (CSF), 500
ml and 300 ml, and the slurry concentration is 10
% And 40%. As a result, as shown in Table 1 below, the relationship between the slurry concentration, the beating degree of the pulp fiber and the bending strength was shown.
【表１】 [Table 1]
【００１３】上表の実施例のように、スラリー濃度が４
０％と高い場合には、パルプ繊維の叩解度を上げると曲
げ強度が上がる傾向を示した。逆に、スラリー濃度が１
０％と低い場合には、やや曲げ強度が上がる傾向を示す
が、叩解度を上げ過ぎる３００ｍｌと低下傾向になっ
た。（よく叩解されているほど、叩解度は低い値を示
す。）したがって、高濃度のスラリーの場合、パルプ繊
維をディスクリファイナーにて叩解すると、曲げ強度が
向上することがわかった。特に高濃度のスラリーの場
合、パルプ繊維をダブルディスクリファイナー（ＤＤ
Ｒ）にて叩解すると、曲げ強度が飛躍的に向上すること
がわかったAs in the examples in the above table, the slurry concentration is 4
When it was as high as 0%, bending strength tended to increase as the beating degree of pulp fiber was increased. Conversely, the slurry concentration is 1
When it was as low as 0%, the bending strength tended to be slightly increased, but the beating degree was excessively increased to 300 ml, which was a tendency to decrease. (The better the beating, the lower the beating degree.) Therefore, in the case of high-concentration slurry, it was found that beating pulp fibers with a disc refiner improves the bending strength. Especially in the case of high-concentration slurries, pulp fibers are double-disc refiner (DD
It was found that the beating strength in (R) dramatically improved the bending strength.
【００１４】特に、高濃度のスラリー濃度が３０％未満
であればスラリー濃度が１０％の場合と、同様に曲げ強
度が弱い傾向を示し、スラリー濃度が６０％を越えると
パルプ繊維を多量に配合しなければならないので不燃性
が問題となるので、スラリー濃度は３０％乃至６０％に
調整することが好ましい。In particular, if the slurry concentration of the high concentration is less than 30%, the bending strength tends to be weak as in the case of the slurry concentration of 10%, and if the slurry concentration exceeds 60%, a large amount of pulp fiber is blended. Since it must be done, non-combustibility becomes a problem, so the slurry concentration is preferably adjusted to 30% to 60%.
【００１５】[0015]
【発明の効果】上述の如く、本発明の請求項１記載の無
機質セメント板の製造方法は、セメントと珪石紛とを主
成分として、補強繊維を配合した材料を高濃度のスラリ
ー濃度に調整したスラリーを抄造して無機質セメント生
板を成形し、該無機質セメント生板を養生硬化して無機
質セメント板を製造する無機質セメント板の製造方法に
おいて、補強繊維としてディスクリファイナーにて解繊
・叩解したパルプ繊維を配合しているので、セメントと
珪石紛とを主成分としても、ディスクリファイナーにて
パルプ繊維を解繊・叩解することで、パルプ繊維とセメ
ントとの親和性が改良され高強度で且つ不燃性の高い無
機質セメント板が得られるものである。As described above, in the method for producing an inorganic cement board according to the first aspect of the present invention, a material containing cement and silica powder as main components and reinforcing fibers is adjusted to a high concentration slurry concentration. In a method for producing an inorganic cement plate by forming a slurry to form an inorganic cement green plate, and curing and curing the inorganic cement green plate, a pulp defibrated and beaten by a disc refiner as a reinforcing fiber. Since the fiber is mixed, even if cement and silica stone powder are the main components, by disintegrating and beating pulp fiber with a disc refiner, the affinity between pulp fiber and cement is improved and high strength and noncombustibility It is possible to obtain an inorganic cement board having high properties.
【００１６】本発明の請求項２記載の無機質セメント板
の製造方法は、高濃度のスラリー濃度が３０乃至６０％
に調整することで、スラリー濃度が高い場合には、パル
プ繊維の叩解度を上げると曲げ強度が高いものとなる。In the method for producing an inorganic cement board according to claim 2 of the present invention, the high-concentration slurry concentration is 30 to 60%.
When the slurry concentration is high, the flexural strength becomes high when the beating degree of the pulp fiber is increased by adjusting the above.
【図１】本発明の無機質セメント板の製造方法の工程を
示す斜視図である。FIG. 1 is a perspective view showing steps of a method for manufacturing an inorganic cement board of the present invention.
【図２】本発明の異なる無機質セメント板の製造方法の
工程を示す斜視図である。FIG. 2 is a perspective view showing a process of a method for producing a different inorganic cement board according to the present invention.
１ セメント ２ 珪石紛 ３ 補強繊維 ４ スラリー ５ 無機質セメント生板 ６ 養生室 ７ 無機質セメント板 ８ プレス機 ９ 無機質セメント化粧板 1 cement 2 silica stone powder 3 reinforcing fibers 4 slurry 5 Inorganic cement raw board 6 curing room 7 Inorganic cement board 8 press machines 9 Inorganic cement decorative board
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０４Ｂ 111:20 Ｃ０４Ｂ 111:28 111:28 Ｆターム(参考） 4G012 PA04 PA22 PC11 PC12 PC15 PE04 PE06 RA03 RA05 RC01 4G052 GA02 GA18 GA25 GB81 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) C04B 111: 20 C04B 111: 28 111: 28 F term (reference) 4G012 PA04 PA22 PC11 PC12 PC15 PE04 PE06 RA03 RA05 RC01 4G052 GA02 GA18 GA25 GB81
Claims (2)
強繊維を配合した材料を高濃度のスラリー濃度に調整し
たスラリーを抄造して無機質セメント生板を成形し、該
無機質セメント生板を養生硬化して無機質セメント板を
製造する無機質セメント板の製造方法において、補強繊
維としてディスクリファイナーにて解繊・叩解したパル
プ繊維を配合することを特徴とする無機質セメント板の
製造方法。1. An inorganic cement green board is formed by forming a slurry containing a cement and silica stone powder as a main component and a reinforcing fiber mixed therein to a high concentration slurry, and the inorganic cement green board is cured. A method for producing an inorganic cement board, which comprises mixing pulp fiber defibrated and beaten by a disc refiner as a reinforcing fiber in the method for producing an inorganic cement board by curing to produce an inorganic cement board.
０％に調整したことを特徴とする請求項１記載の無機質
セメント板の製造方法。2. The high-concentration slurry concentration is 30 to 6
The method for producing an inorganic cement board according to claim 1, wherein the method is adjusted to 0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002017802A JP2003211425A (en) | 2002-01-28 | 2002-01-28 | Method for producing inorganic concrete plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002017802A JP2003211425A (en) | 2002-01-28 | 2002-01-28 | Method for producing inorganic concrete plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003211425A true JP2003211425A (en) | 2003-07-29 |
Family
ID=27653365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002017802A Pending JP2003211425A (en) | 2002-01-28 | 2002-01-28 | Method for producing inorganic concrete plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003211425A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008247650A (en) * | 2007-03-29 | 2008-10-16 | Kubota Matsushitadenko Exterior Works Ltd | Fiber cement board |
| KR101537928B1 (en) * | 2011-03-07 | 2015-07-20 | 니치하 가부시키가이샤 | Inorganic board and a method of manufacturing said inorganic board |
| CN110434994A (en) * | 2019-07-29 | 2019-11-12 | 福建筑可丽建材科技有限公司 | A kind of multichannel with automatic mode discloses pulp grinder |
-
2002
- 2002-01-28 JP JP2002017802A patent/JP2003211425A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008247650A (en) * | 2007-03-29 | 2008-10-16 | Kubota Matsushitadenko Exterior Works Ltd | Fiber cement board |
| KR101537928B1 (en) * | 2011-03-07 | 2015-07-20 | 니치하 가부시키가이샤 | Inorganic board and a method of manufacturing said inorganic board |
| CN110434994A (en) * | 2019-07-29 | 2019-11-12 | 福建筑可丽建材科技有限公司 | A kind of multichannel with automatic mode discloses pulp grinder |
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