JPS63107849A - Manufacture of inorganic hardened body - Google Patents
Manufacture of inorganic hardened bodyInfo
- Publication number
- JPS63107849A JPS63107849A JP25491886A JP25491886A JPS63107849A JP S63107849 A JPS63107849 A JP S63107849A JP 25491886 A JP25491886 A JP 25491886A JP 25491886 A JP25491886 A JP 25491886A JP S63107849 A JPS63107849 A JP S63107849A
- Authority
- JP
- Japan
- Prior art keywords
- pulp
- water
- slurry
- strength
- water repellent
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 239000005871 repellent Substances 0.000 claims description 20
- 230000002940 repellent Effects 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 14
- 125000002091 cationic group Chemical group 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000014759 maintenance of location Effects 0.000 description 5
- 239000012779 reinforcing material Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- -1 Polypropylene Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 241001061127 Thione Species 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000013055 pulp slurry Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009864 tensile test Methods 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
- C04B28/02—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
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)
- Dental Preparations (AREA)
- Glass Compositions (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［技術分野Ｊ
本発明は、パルプを補強材としで用いたセメント板など
無機質硬化体の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field J] The present invention relates to a method for manufacturing an inorganic hardened body such as a cement board using pulp as a reinforcing material.
【背景技術］
パルプはセメント系の水硬性物質に対しでは十分な補強
効果を有し、またスラリーを抄造する湿式抄造法で成形
をおこなう場合、スラリーにおいてセメント系水硬性物
質とパルプとは分散性が良好であるため、この場合の補
強材としてパルプは特に適している。しかし、パルプは
吸水すると強度が低下するためにパルプを補強材として
用いたＳＲ質硬化体は吸水時の強度保持率が低くなると
いう問題があり、吸水しないアスベストや有機繊維など
が補強材として主に用いられでいるのが現状である。[Background technology] Pulp has a sufficient reinforcing effect on cement-based hydraulic substances, and when forming a slurry using the wet papermaking method, the cement-based hydraulic substances and pulp are dispersible in the slurry. Pulp is particularly suitable as a reinforcing material in this case because of its good properties. However, the strength of pulp decreases when it absorbs water, so SR cured materials using pulp as a reinforcing material have a problem in that the strength retention rate when absorbing water is low, and asbestos and organic fibers, which do not absorb water, are mainly used as reinforcing materials. Currently, it is used for
［発明の目的］
本発明は、上記の点に鑑みて為されたものであり、吸水
時の強度保持率を低下させることなくパルプを補強材と
して使用できる無機質硬化体の製造方法を提供すること
を目的とするものである。[Objective of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to provide a method for producing an inorganic cured material in which pulp can be used as a reinforcing material without reducing the strength retention rate upon water absorption. The purpose is to
［発明の開示］
しかして本発明に係る無機質硬化体の製造方法は、パル
プを水に分散した状態でカチオン性撥水剤をパルプに吸
着させ、これを水硬性物質とともに混合してスラリーを
′Ｗ！４Ｓ！シ、このスラリーを成形して養生硬化する
ことを特徴とするものであり、以下本発明の詳細な説明
する。[Disclosure of the Invention] According to the method for producing an inorganic cured product according to the present invention, a cationic water repellent is adsorbed to the pulp in a state where the pulp is dispersed in water, and this is mixed with a hydraulic substance to form a slurry. W! 4S! The present invention is characterized in that this slurry is molded and cured.The present invention will be described in detail below.
本発明においてはパルプを検水剤で処理した状態で用い
るものであり、撥水剤としてはカチオン系の紙サイズ剤
や樹脂、そのエマルジＢンなどを用いることができ、構
造中にカチオン基を有して撥水性を有するものであれば
原則的に何でも用いることができるが、なかでも石油樹
脂系サイズ剤やアクリル系力チオンエマルシ１ンが適し
ている。In the present invention, the pulp is used after being treated with a water test agent, and cationic paper sizing agents, resins, emulsions thereof, etc. can be used as the water repellent. In principle, any material can be used as long as it has water repellency, but petroleum resin sizing agents and acrylic thione emulsions are particularly suitable.
これらのものとして例示すれば次のものが挙げられる。Examples of these include the following.
■近代化学社製「Ｈ−７ＡＪ
■近代化学社１１ＮＳ−７１５」
ＯＨＯＨ
■近代化学社！！！ｒＡＤＴ−１０Ｊ
■近代化学社′９１「ポリプロ」
ポリプロピレンを端末アミ７基でカチオン化したボリプ
ロビレンエマルジａン
そしてまず、パルプを解繊したのちにこれを水に分散さ
せ、このパルプスラリー中に上記撥水剤を加えて混合す
ることによってパルプに撥水剤を吸着させる。このよう
にパルプを水中に分散させた状態において、カチオン系
の撥水剤はパルプに均一に作用してパルプの表面に容易
に吸着され、効率良くパルプの撥水処理をおこなうこと
ができる０次にこの撥水剤で処理したパルプスフリーに
セメントや石膏等の水硬性物質やその他必要に応じて充
填材などを配合して混合し、成形用のスラリーを＊＊す
る。そしてこのスラリーを抄造などの操作でシート状に
成形し、これをプレス成形、養生硬化、乾燥等の工程を
経てパルプ補強のｍ磯質硬化体を得るのである。■Kinda Kagakusha "H-7AJ ■Kinda Kagakusha 11NS-715" OHOH ■Kinda Kagakusha! ! ! rADT-10J ■Kinda Kagakusha '91 "Polypro" Polypropylene emulsion a made by cationizing polypropylene with 7 terminal amino groups.First, after defibrating the pulp, it is dispersed in water, and in this pulp slurry. By adding and mixing the water repellent, the water repellent is adsorbed onto the pulp. In this state where the pulp is dispersed in water, the cationic water repellent acts uniformly on the pulp and is easily adsorbed on the surface of the pulp, resulting in a zero-order water repellent that can efficiently perform water repellent treatment on the pulp. The pulp-free treated with this water repellent is mixed with hydraulic substances such as cement and gypsum, and other fillers as necessary to form a slurry for molding. Then, this slurry is formed into a sheet by an operation such as paper making, and this is subjected to processes such as press molding, curing, drying, etc. to obtain a pulp-reinforced hardened rock material.
上記のようにして得たＳ８！質硬化体において、パルプ
は撥水剤によって撥水処理がされでいるため、無機質硬
化体が吸水してもパルプがこの水分を吸水することを撥
水剤の作用で防止することができ、吸水時の無機質硬化
体の強度低下が低減されるものである。S8 obtained as above! In the hardened material, the pulp has been treated with water repellent using a water repellent, so even if the inorganic hardened material absorbs water, the action of the water repellent can prevent the pulp from absorbing this water. This reduces the decrease in strength of the inorganic cured product.
次に本発明を実施例によって具体的に説明する。Next, the present invention will be specifically explained using examples.
Ｋ胤４
パルプ（ＬＵＫＰ、ＮＵＫＰ）を４重量％濃度になるよ
うに水に配合してミキサーで４分間解繊したのちに、撥
水剤をこれに添加してさらに３分間攪拌してパルプに検
水剤を定着させた０次にこれにｆｌｓ１表の配合になる
ようにポルトランドセメント、高炉水砕スラグ、石膏、
炭酸カルシウムを加えると共にスラリー濃度が６重量％
になるように水を追加し、２分間攪拌して成形用のスラ
リーを得た。このスラリーをプラナ−ロートを大型にし
た３００Ｘ３００ｍａ＋の角型ろ過器によってろ過する
ことによって厚み１３ｍｍのケーキを作成し、このケー
キをプレス圧２０ｋｇ／ａｍ２で成形して厚さが１０ｍ
＋＊で含水率（水／（固形分土水））が約３５％の生板
を得た。K-tane 4 Pulp (LUKP, NUKP) was mixed with water to a concentration of 4% by weight and defibrated for 4 minutes in a mixer, then a water repellent was added to it and stirred for another 3 minutes to form pulp. After fixing the water test agent, add Portland cement, granulated blast furnace slag, gypsum,
With the addition of calcium carbonate, the slurry concentration is 6% by weight.
Water was added to the mixture and stirred for 2 minutes to obtain a slurry for molding. A cake with a thickness of 13 mm was created by filtering this slurry through a 300 x 300 ma+ rectangular filter with a large planar funnel, and this cake was molded with a press pressure of 20 kg/am2 to a thickness of 10 m.
A green board with a moisture content (water/(solid content soil water)) of about 35% was obtained with +*.
この生板を温度８０℃で３日間蒸気養生して硬化させ、
さらに温度８０℃の乾燥機中で約１０時間乾燥させて無
機質硬化体を得た。This raw board was steam-cured for 3 days at a temperature of 80°C to harden it.
Furthermore, it was dried for about 10 hours in a dryer at a temperature of 80°C to obtain an inorganic cured product.
ここで、撥水剤としては前出のｒＨ−７ＡＪ、［Ｎ５−
７１５Ｊ、ｒＡＤＴ−１０Ｊ、「ポリプロ」をそれぞれ
用い、さらにこれらの検水剤の処理量を変化させて用い
るようにした。撥水剤の種類及び処理量を第２表に示す
。Here, as the water repellent, the aforementioned rH-7AJ, [N5-
715J, rADT-10J, and "Polypro" were used, and the amounts of these water test agents were varied. Table 2 shows the types and amounts of water repellents used.
駁１４
パルプに対する撥水剤の処理をしない他は実施例と同様
にして無機質硬化体を得た。14 An inorganic cured product was obtained in the same manner as in Example except that the pulp was not treated with a water repellent.
上記のようにして実施例及び比較例で得たｓ機質硬化体
のを幅２０１１長さ３００ｍｍにカットし、これを６０
℃で２４時間乾燥して乾燥強度測定サンプルを作成する
と共に、また水中に２４時間浸漬して吸水させて吸水強
度測定サンプルを作成した。そして高滓製作所製オート
グラフを用い、チャック距離２００＋ｍ、ヘッドスピー
ド１情−／憔；ｎの条件でこの各サンプルの引張強度を
測定した。この引張試験における乾燥強度測定サンプル
の引張強度を「乾燥強度」として、吸水強度測定サンプ
ルの引張強度を「吸水強度」としてそれぞれ第２表に示
し、また（吸水強度／乾燥強度）を「強度保持率」とし
て第２表に示した。尚、上記サンプルの密度はいずれも
１．０５〜１．１０（６０℃恒温）であつ第２表の結果
、パルプを撥水剤で処理した各実施例のものでは吸水強
度の低下が小さくて強度保持率を高く維持することがで
きるのに対して、撥水剤で処理しないパルプを用いた比
較例のものでは吸水強度が大きく低下して強度保持率を
商（維持することができないことが確認される。また乾
燥強度においても各実施例のものは比較例のものよりも
高いが、これはカチオン系の撥水剤によってスラリー中
でのパルプの分散性が向上することになるためではない
かと考えられる。The S texture cured bodies obtained in the Examples and Comparative Examples as described above were cut into 201 mm in width and 300 mm in length.
A dry strength measurement sample was prepared by drying at ℃ for 24 hours, and a water absorption strength measurement sample was also prepared by immersing it in water for 24 hours to absorb water. Then, the tensile strength of each sample was measured using an autograph manufactured by Takasugi Seisakusho under conditions of a chuck distance of 200+ m and a head speed of 1 -/n. The tensile strength of the dry strength measurement sample in this tensile test is shown as "dry strength" and the tensile strength of the water absorption strength measurement sample is shown as "water absorption strength" in Table 2. It is shown in Table 2 as "rate". The densities of the above samples are all 1.05 to 1.10 (at a constant temperature of 60°C), and as shown in Table 2, the decrease in water absorption strength is small for each example in which the pulp was treated with a water repellent. While the strength retention rate can be maintained at a high level, in the case of the comparative example using pulp that is not treated with a water repellent, the water absorption strength decreases significantly and the strength retention rate is Also, the dry strength of each example is higher than that of the comparative example, but this is not because the cationic water repellent improves the dispersibility of the pulp in the slurry. I think so.
［発明の効果］
上述のように本発明にあっては、パルプを水に分散した
状態でカチオン系検水剤をパルプに吸着させ、これを水
硬性物質とともに混合してスラリーを調製し、このスラ
リーを成形して養生硬化するようにしたので、無機質硬
化体に水分が作用してもパルプがこの水分を吸水するこ
とを撥水剤の作用で防止することができ、パルプの強度
低下を防止して吸水時の無機質硬化体の強度低下を小さ
くすることができるものであって、吸水時の強度保持率
を高めることができるものである。[Effect of the invention] As described above, in the present invention, a cationic water test agent is adsorbed to the pulp in a state where the pulp is dispersed in water, and this is mixed with a hydraulic substance to prepare a slurry. Since the slurry is molded and cured, even if water acts on the inorganic cured product, the water repellent prevents the pulp from absorbing this water, thereby preventing a decrease in the strength of the pulp. This makes it possible to reduce the decrease in strength of the inorganic cured product upon water absorption, and to increase the strength retention rate upon water absorption.
Claims (1)
パルプに吸着させ、これを水硬性物質とともに混合して
スラリーを調製し、このスラリーを成形して養生硬化す
ることを特徴とする無機質硬化体の製造方法。(1) A cationic water repellent is adsorbed onto the pulp while the pulp is dispersed in water, this is mixed with a hydraulic substance to prepare a slurry, and this slurry is molded and cured. A method for producing an inorganic cured body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25491886A JPS63107849A (en) | 1986-10-27 | 1986-10-27 | Manufacture of inorganic hardened body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25491886A JPS63107849A (en) | 1986-10-27 | 1986-10-27 | Manufacture of inorganic hardened body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63107849A true JPS63107849A (en) | 1988-05-12 |
Family
ID=17271665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25491886A Pending JPS63107849A (en) | 1986-10-27 | 1986-10-27 | Manufacture of inorganic hardened body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63107849A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5089776A (en) * | 1989-09-25 | 1992-02-18 | Nkk Corporation | Apparatus for detecting defects in a moving steel strip with a magnetizing yoke and a sensor placed on opposite sides of the strip |
| US5235275A (en) * | 1990-02-22 | 1993-08-10 | Nkk Corporation | Magnetic inspection apparatus for thin steel strip having magnetizer and detection coil within a hollow roller rotated by the steel strip |
| US5512821A (en) * | 1991-06-04 | 1996-04-30 | Nkk Corporation | Method and apparatus for magnetically detecting defects in an object with compensation for magnetic field shift by means of a compensating coil |
| JP2004510672A (en) * | 2000-10-04 | 2004-04-08 | ジェイムズ ハーディー リサーチ ピーティーワイ．リミテッド | Fiber cement composite material using cellulose fibers filled with inorganic and / or organic substances |
| JP2004527664A (en) * | 2000-10-04 | 2004-09-09 | ジェイムズ ハーディー リサーチ ピーティーワイ．リミテッド | Fiber cement composites using sized cellulose fibers |
| US7857906B2 (en) | 2001-03-09 | 2010-12-28 | James Hardie Technology Limited | Fiber reinforced cement composite materials using chemically treated fibers with improved dispersibility |
| US7942964B2 (en) | 2003-01-09 | 2011-05-17 | James Hardie Technology Limited | Fiber cement composite materials using bleached cellulose fibers |
| US7998571B2 (en) | 2004-07-09 | 2011-08-16 | James Hardie Technology Limited | Composite cement article incorporating a powder coating and methods of making same |
| US8182606B2 (en) | 2000-03-14 | 2012-05-22 | James Hardie Technology Limited | Fiber cement building materials with low density additives |
| US8993462B2 (en) | 2006-04-12 | 2015-03-31 | James Hardie Technology Limited | Surface sealed reinforced building element |
-
1986
- 1986-10-27 JP JP25491886A patent/JPS63107849A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5089776A (en) * | 1989-09-25 | 1992-02-18 | Nkk Corporation | Apparatus for detecting defects in a moving steel strip with a magnetizing yoke and a sensor placed on opposite sides of the strip |
| US5235275A (en) * | 1990-02-22 | 1993-08-10 | Nkk Corporation | Magnetic inspection apparatus for thin steel strip having magnetizer and detection coil within a hollow roller rotated by the steel strip |
| US5512821A (en) * | 1991-06-04 | 1996-04-30 | Nkk Corporation | Method and apparatus for magnetically detecting defects in an object with compensation for magnetic field shift by means of a compensating coil |
| US8182606B2 (en) | 2000-03-14 | 2012-05-22 | James Hardie Technology Limited | Fiber cement building materials with low density additives |
| JP2004510672A (en) * | 2000-10-04 | 2004-04-08 | ジェイムズ ハーディー リサーチ ピーティーワイ．リミテッド | Fiber cement composite material using cellulose fibers filled with inorganic and / or organic substances |
| JP2004527664A (en) * | 2000-10-04 | 2004-09-09 | ジェイムズ ハーディー リサーチ ピーティーワイ．リミテッド | Fiber cement composites using sized cellulose fibers |
| US7857906B2 (en) | 2001-03-09 | 2010-12-28 | James Hardie Technology Limited | Fiber reinforced cement composite materials using chemically treated fibers with improved dispersibility |
| US7942964B2 (en) | 2003-01-09 | 2011-05-17 | James Hardie Technology Limited | Fiber cement composite materials using bleached cellulose fibers |
| US7998571B2 (en) | 2004-07-09 | 2011-08-16 | James Hardie Technology Limited | Composite cement article incorporating a powder coating and methods of making same |
| US8993462B2 (en) | 2006-04-12 | 2015-03-31 | James Hardie Technology Limited | Surface sealed reinforced building element |
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