JPS6061210A - Manufacture of inorganic cured body - Google Patents

Manufacture of inorganic cured body

Info

Publication number
JPS6061210A
JPS6061210A JP17021583A JP17021583A JPS6061210A JP S6061210 A JPS6061210 A JP S6061210A JP 17021583 A JP17021583 A JP 17021583A JP 17021583 A JP17021583 A JP 17021583A JP S6061210 A JPS6061210 A JP S6061210A
Authority
JP
Japan
Prior art keywords
inorganic
papermaking
fibers
cured
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
Application number
JP17021583A
Other languages
Japanese (ja)
Inventor
保 赤阪
和夫 瀬戸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP17021583A priority Critical patent/JPS6061210A/en
Publication of JPS6061210A publication Critical patent/JPS6061210A/en
Pending legal-status Critical Current

Links

Landscapes

  • Producing Shaped Articles From Materials (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) [Summary] 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〕 この発明は、長網式抄造機を用いた無機硬化体の製法に
関する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for producing an inorganic cured product using a fourdrinier paper machine.

〔背景技術〕[Background technology]

無ate化体(特に無機糸ボード)を大量に生産する方
法として、代表的なものに丸網式および長網式の二つの
抄造法がある。従来より、一般には、長網式よりも丸網
式の方が使用されることが多い。丸網式抄造法では、ハ
チニック抄造機(丸網式抄造機)を用いて、セメント類
、補強繊維、その他を含むスラリー抄き上げ、得られた
無機質の薄f@(厚み約1〜2mII)を複数枚重ね合
わせることにより成形し、プレス等を行って無機硬化体
を得る。しかし、この方法には、厚み方向に何層にも薄
1@を奄ねるようにするため、得られる無機硬化体の耐
凍害性が悪く、層間剥離が生じる恐れが多いという問題
があった。
There are two typical methods for mass-producing ate-free bodies (particularly inorganic yarn boards): a circular net method and a fourdrinier method. Conventionally, the circular net type is more often used than the fourdrinier type. In the circular mesh papermaking method, a Hachinik papermaking machine (circular mesh papermaking machine) is used to create a slurry containing cement, reinforcing fibers, etc., and the resulting inorganic thin f@ (thickness approximately 1 to 2 mII) A cured inorganic body is obtained by stacking a plurality of sheets and molding them, and performing pressing or the like. However, this method has a problem in that since the inorganic cured product obtained has poor freeze damage resistance and is likely to cause delamination, since a thin layer of 1@ is applied in many layers in the thickness direction.

そこで、数年前から、一層で成形する長網式の抄造法が
広く用いられるようになってきた。長編式抄造機を用い
る長網式抄造法では、一層で成形するために、複数枚で
成形する丸網式抄造法に比べ、得られる無機硬化体の声
凍害性が優れたものとなり、しかも、生産スピードが速
いという利点を持つ、長網式の抄造スピードは、一般に
8〜12m/分程度である。他方、丸網式の抄造スピー
ドは、一般に40〜60m/分程度であるが、普通は5
〜6枚のMT@をlねるようにするので、重ねたあとの
ものとして抄造スピードを換算すると6〜10m/分程
度となる。
Therefore, for several years now, the Fourdrinier papermaking method, which involves forming paper in one layer, has been widely used. In the Fourdrinier papermaking method using a long-length papermaking machine, the resulting inorganic hardened material has better resistance to frost damage than the circular wire papermaking method in which multiple sheets are formed. Fourdrinier papermaking speed, which has the advantage of high production speed, is generally about 8 to 12 m/min. On the other hand, the papermaking speed of the round net method is generally about 40 to 60 m/min, but it is usually about 5 m/min.
Since ~6 sheets of MT@ are rolled, the papermaking speed after stacking is approximately 6 to 10 m/min.

しかしながら、長編式抄造法にも問題があった。すなわ
ち、原材料と多量の水とを混合することにより得られた
スラリーを、フェルト等を用いて連続的に濾過していく
ので、抄造中にスラリーの固・液分離が起こり易くなる
。そのため、得られる抄造体のフェルト等に面した側(
下面Wi)ではセメント類等のマトリックスが多くなり
、逆側(上面r@)では補強繊維等の繊維類のような比
較的軽いものが多くなって、両層の組成が同じにならず
に異なったものとなることが多いという問題である。こ
のようなことは、得られる無機硬化体の物性や品質等に
悪影響を及ぼす。前記のような層分離を防ぐため、スラ
リー濃度を濃くしたり、原材料として微粒の粒子、細か
い繊維を使用したりする等の方策がとられているが、こ
れらの方策には抄造スピードが低くなる(濾過スピード
が落ちる)という欠点がある。
However, the long-form papermaking method also had problems. That is, since a slurry obtained by mixing raw materials and a large amount of water is continuously filtered using felt or the like, solid/liquid separation of the slurry is likely to occur during papermaking. Therefore, the side facing the felt etc. of the resulting paper product (
On the lower surface Wi), there is more matrix such as cement, and on the opposite side (upper surface r@), there are many relatively light materials such as reinforcing fibers, and the compositions of both layers are not the same but different. The problem is that it often becomes a problem. Such a situation adversely affects the physical properties, quality, etc. of the obtained inorganic cured product. In order to prevent the above-mentioned layer separation, measures have been taken such as increasing the slurry concentration and using fine particles and fine fibers as raw materials, but these measures slow down the papermaking speed. (The filtration speed decreases).

〔発明の目的〕[Purpose of the invention]

この発明は、このような事情に鑑みなされたもので、生
産スピードを速くすることができるとともに、全体が均
質の無機硬化体を得ることができる、長網式抄造機を用
いた無機硬化体の製法を提供することを目的としている
This invention was made in view of the above circumstances, and is a method for producing inorganic cured products using a fourdrinier paper making machine, which can speed up the production speed and obtain homogeneous inorganic cured products as a whole. The purpose is to provide a manufacturing method.

〔発明の開示〕[Disclosure of the invention]

前記のような目的を達成するため、この発明は、セメン
ト類および補強繊維を含むスラリーを長網式抄造機によ
り抄き上げて一層からなる成形体をつくったのち、これ
を養生硬化して無機硬化体をつくるにあたり、補強繊維
として、ショツパー濾水度を30〜60°SRに調整し
たパルプを配合1京材料の固形分基準で1〜7宙量%用
いることを特徴とする無機硬化体の製法をその要旨とし
ている。以下に、この発明の詳細な説明する。
In order to achieve the above-mentioned object, the present invention involves forming a single-layer molded product by using a fourdrinier paper machine to form a slurry containing cement and reinforcing fibers, and then curing and hardening this to form an inorganic material. An inorganic hardened body characterized in that, in producing the hardened body, pulp whose Schopper freeness is adjusted to 30 to 60°SR is used as a reinforcing fiber in an amount of 1 to 7% by volume based on the solid content of the blended material. The gist is the manufacturing method. The present invention will be explained in detail below.

ここで、セメント類とは、普通ポルトランドセメンI−
、高炉セメントフライアッシュセメント、アルミナセメ
ント等、無機硬化体の製造で用いられる一般のセメント
類を指す。
Here, cement refers to ordinary Portland cement I-
Refers to general cements used in the production of inorganic hardened bodies, such as blast furnace cement, fly ash cement, and alumina cement.

補強繊維としては、フィブリル化等によりショツパー濾
水度が30〜60°SRとなるように調整したパルプを
用いる。このようなパルプは、径の細い繊維が多いとと
もに嵩高い(ボリューム量が多い)ので、長網式抄造機
を用いて抄造を行う。
As the reinforcing fibers, pulp that has been adjusted to have a Schopper freeness of 30 to 60°SR by fibrillation or the like is used. Since such pulp has many fibers with a small diameter and is bulky (has a large volume), it is made into paper using a fourdrinier paper making machine.

とき、スラリーの固・液分離が起こる(パルプ。When solid/liquid separation of the slurry occurs (pulp.

セメント類、水が互いに分離する)恐れが非常に少なく
なるのである。
This greatly reduces the risk of cement and water separating from each other.

後述するように、この発明では、パルプの使用量は配合
原材料の固形分基準で1〜7重量%であるが、ショツパ
ー濾水度が30°SR未満のパルプの使用量が7重量%
未満ではスラリーの固・液分離が発生する想れが多くな
る。ショツパー濾水度が60°SRを越えるパルプを使
用した場合、スラリーの固・液分離が発生する恐れはな
いが、スラリーの濾水性が極端に悪くなり抄造スピード
が落ちてしまう。
As described later, in this invention, the amount of pulp used is 1 to 7% by weight based on the solid content of the blended raw materials, but the amount of pulp used with a Schopper freeness of less than 30° SR is 7% by weight.
If it is less than that, solid/liquid separation of the slurry is likely to occur. If a pulp with a Schopper freeness exceeding 60°SR is used, there is no risk of solid/liquid separation of the slurry, but the freeness of the slurry will be extremely poor and the papermaking speed will be reduced.

ショツパー濾水度を30〜60″SRに調整したパルプ
としては、饅初からこのようなショツパー濾水度の範囲
に含まれているパルプに限られず、ショツパー濾水度の
異なる複数のパルプを混合すると前記のようなショツパ
ー濾水度の範囲に入る場合の複数のパルプの組合わせも
含まれるものとする。たとえば、未叩解でショツパー濾
水度が20°SR以下のパルプと、叩解等してショツパ
ー濾水度が60°SR以上となったパルプを併用し、両
者が混合されたときにショツパー濾水度が30〜60°
SRの範囲となるようであってもよい。
Pulp with a Schottspar freeness adjusted to 30 to 60"SR is not limited to pulp that falls within this range of Schottspar freeness, but can also be a mixture of multiple pulps with different Schottspar freenesses. This also includes combinations of multiple pulps that fall within the range of Schopper freeness as described above.For example, unbeaten pulp with a Schopper freeness of 20°SR or less, and pulp that has been beaten, etc. Pulp with a Schopper freeness of 60°SR or higher is used in combination, and when the two are mixed, the Schopper freeness is 30 to 60°.
It may be within the range of SR.

パルプの他に別の補強繊維が併用されるようであっても
よい。併用される補強繊維としては、たとえば、ガラス
繊維、“ロックウール、カーボンファイバー等の無機繊
維、スチールファイバー等の金属繊維、ビニロン、ポリ
エチレン、ポリプロピレン、アクリル等の有機繊維があ
げられる。
Other reinforcing fibers may be used in addition to pulp. Examples of reinforcing fibers used in combination include glass fibers, inorganic fibers such as rock wool and carbon fibers, metal fibers such as steel fibers, and organic fibers such as vinylon, polyethylene, polypropylene, and acrylic fibers.

この発明にかかる無機硬化体の製法でも、従来の製法と
同様、補強繊維としてアスベスト繊維を用いてもよいが
アスベスト繊維は公害を発生させる恐れが多いので、で
きるだけ使用しないようにするのがよい。アスベスト繊
維は、繊維径が細く、セメント類や水とのなじみがよい
等の理由により、抄造法用の補強繊維として用いるのに
非常に適しているため、従来広く用いられてきたのであ
るが、前記したように公害を発生させる恐れが多い。抄
造法では、アスベスト繊維のような繊維径が細くセメン
ト類や水とのなじみがよい繊維が必須であるが、この発
明ではそのような繊維としてパルプを使用するのでアス
ベスト繊維を全く使用しなくてもよいのである。
In the method for producing an inorganic cured product according to the present invention, asbestos fibers may be used as reinforcing fibers, as in the conventional production method, but asbestos fibers are likely to cause pollution, so it is best to avoid using them as much as possible. Asbestos fibers have been widely used in the past because they are very suitable for use as reinforcing fibers in papermaking methods due to their small fiber diameter and good compatibility with cement and water. As mentioned above, there is a high risk of causing pollution. In the papermaking method, fibers such as asbestos fibers, which have a small fiber diameter and are compatible with cement and water, are essential, but in this invention, pulp is used as such fibers, so asbestos fibers are not used at all. It is also good.

セメント類、補強繊維のほか必要に応じて充填材等が用
いられる。
In addition to cement and reinforcing fibers, fillers and the like are used as necessary.

セメント類、補強繊維等を多量の水の存在下において混
合攪拌して無機水硬性のスラリーをつくる。バルブは、
配合原材料の固形分基準で1〜7虫量%用いるようにす
る。パルプの使用量が7重量%を越えると、得られる無
機硬化体が不燃性テストに不合格となる確率が非常に高
くなるからである。
An inorganic hydraulic slurry is created by mixing and stirring cement, reinforcing fibers, etc. in the presence of a large amount of water. The valve is
It should be used in an amount of 1 to 7% based on the solid content of the raw materials. This is because if the amount of pulp used exceeds 7% by weight, there is a very high probability that the obtained inorganic cured product will fail the nonflammability test.

バルブの他に別の有機繊維を併用する場合は、バルブお
よびこれと併用される有機繊維の合計の使用口を、配合
原材料の固形分基準で7重量%以下とするのが好ましい
、7重量%を越えると得られるノ!((機硬化体が不燃
性テストに不合格となる恐れが多くなるからである。
When using other organic fibers in addition to the valve, it is preferable that the total usage of the valve and the organic fibers used together is 7% by weight or less based on the solid content of the blended raw materials, 7% by weight. You can get it by exceeding! (This is because there is a high possibility that the machine-cured material will fail the nonflammability test.

長11i!I代抄造機を用いて前記スラリーを連続濾過
し、一層からなる成形体を得る(一層成形する)。ここ
でいう長網式抄造機とは、要するに金網ネットやフェル
ト等により連続的にスラリーを濾過して、一層成形を行
いうる装置であって、一般にいわれる長網式抄造機を部
分的に改造したもの等も含まれる。得られた成形体を必
要に応じて加圧プレスしたあと、養生硬化させて無機硬
化体を得る。
Long 11i! The slurry is continuously filtered using an I-pass paper making machine to obtain a molded article consisting of one layer (single layer molding). The fourdrinier papermaking machine referred to here is basically a device that can perform one-layer molding by continuously filtering slurry using a wire mesh net or felt, and is a partially modified version of the generally known fourdrinier papermaking machine. It also includes things that have been done. The obtained molded body is pressed under pressure if necessary, and then cured and cured to obtain an inorganic cured body.

この発明にかかる無機硬化体の製法では、ショツパー濾
水度を30〜60″SRに調整したパルプを補強繊維と
して用いるので、抄造時にスラリーの固・液分離が起こ
る認れがほとんどなく、そのため、全体が均質の無機硬
化体を得ることができる。また、抄造時にスラリーの濾
過スピードが速く、抄造スピードが速いので、無機硬化
体の生産スピードを速くすることができる。
In the method for producing an inorganic cured product according to the present invention, pulp whose Schopper freeness is adjusted to 30 to 60''SR is used as the reinforcing fiber, so there is almost no evidence of solid/liquid separation of the slurry during papermaking. It is possible to obtain an inorganic cured product that is homogeneous throughout.Also, since the slurry filtration speed during papermaking is fast and the papermaking speed is fast, the production speed of the inorganic cured product can be increased.

つぎに、実施例および比較例について説明する実施例1
〜5および比較例1〜3では、つぎのようにして無機硬
化体をつくった。まず、第1表に示されている配合で1
京材料を使用し、多量の水の存在下で原材料を混合して
スラリーをつくった(以 下 余 白) つぎに、第1表に示されている抄造条件により得られた
スラリーを長網式抄造機で抄造し、抄造体をプレス圧力
40kg/cdで加圧して厚み約611IInの成形体
とした。このあと、成形体を温度60℃、湿度95%R
FI以上で2週間湿熱#住して無機硬化体(無機ボード
)を得た。得られた無機硬化体の外観、比重9曲げ強度
を稠べるとともに凍害テスト(ASTM■法300回)
を行った。その結果を第2表に示す。第2表中、外観お
よび凍害テストの結果において、○は合格、×は不合格
をあられす。
Next, Example 1 to explain Examples and Comparative Examples
-5 and Comparative Examples 1 to 3, inorganic cured bodies were produced in the following manner. First, with the composition shown in Table 1, 1
Using Kyoto materials, a slurry was made by mixing the raw materials in the presence of a large amount of water (see the margin below).Next, the slurry obtained under the papermaking conditions shown in Table 1 was processed using a fourdrinier method. The paper was made using a paper making machine, and the paper product was pressed at a press pressure of 40 kg/cd to form a molded product having a thickness of about 611 IIn. After this, the molded body was heated at a temperature of 60°C and a humidity of 95%R.
A cured inorganic body (inorganic board) was obtained by heating with moist heat for 2 weeks at FI or above. The appearance and bending strength of the obtained inorganic cured product with a specific gravity of 9 were examined, and a freeze damage test (ASTM ■ method 300 times) was conducted.
I did it. The results are shown in Table 2. In Table 2, in terms of appearance and frost damage test results, ○ means pass, and × means fail.

(以 下 余 白) 第2表より、実施例1〜5で得られた無機硬化体は、い
ずれも、比較例1で得られたものに比べ、表裏面の質の
差がほとんどなく、耐凍害性も優れており、そのうえ、
裏面側より荷重した場合の曲げ強度も高くなっているこ
ともわかる。
(Margins below) From Table 2, all of the inorganic cured bodies obtained in Examples 1 to 5 have almost no difference in quality between the front and back surfaces compared to that obtained in Comparative Example 1. It has excellent frost damage resistance, and
It can also be seen that the bending strength is higher when a load is applied from the back side.

また、第1表中、実施例1〜5および比較例1〜3の抄
造スピードを比べると、比較例2および3の抄造スピー
ドは他のものに比べて遅くなっているが、これは、比較
例2および3ではこれ以上抄造スピードを速くすること
ができなかったためである。すなわち、実施例1〜5で
は比較例2および3よりもスラリーの抄造スピードを上
げて無機硬化体の生産スピードを速くすることができた
のである。
Also, in Table 1, when comparing the papermaking speeds of Examples 1 to 5 and Comparative Examples 1 to 3, the papermaking speeds of Comparative Examples 2 and 3 are slower than the others; This is because in Examples 2 and 3, it was not possible to increase the papermaking speed any further. That is, in Examples 1 to 5, it was possible to increase the speed of papermaking of the slurry and increase the production speed of the inorganic cured body compared to Comparative Examples 2 and 3.

〔発明の効果〕〔Effect of the invention〕

この発明にかかる無機硬化体の製法では、セメン)II
JIおよび補強繊維を含むスラリーを長網式抄造機によ
り抄き上げて一層からなる成形体をつくったのち、これ
を養生硬化して無機硬化体をつくるにあたり、補強繊維
として、ショツパー濾水度を30〜60°SRに調整し
たバルブを配合原材料の固形分基準で1〜7重量%用い
るので、生産スピードを速くすることができるとともに
、全体が均質な無機硬化体を得ることができる。
In the method for producing an inorganic cured body according to this invention, cement) II
A slurry containing JI and reinforcing fibers is drawn up using a fourdrinier machine to make a single-layer molded product, and then this is cured and cured to create an inorganic hardened product. Since the valve adjusted to 30 to 60° SR is used in an amount of 1 to 7% by weight based on the solid content of the blended raw materials, the production speed can be increased and an inorganic cured product that is homogeneous as a whole can be obtained.

代理人 弁理士 松 本 武 彦Agent: Patent Attorney Takehiko Matsumoto

Claims (1)

【特許請求の範囲】[Claims] (1) セメント類および補強繊維を含むスラリーを長
網式抄造機により抄き上げて一層からなる成形体をつく
ったのち、これを養生硬化して無機硬化体をつくるにあ
たり、補強繊維として、ショツパー濾水度を30〜60
°SRに調整したパルプを配合原材料の固形分基準で1
〜7宙量%用いることを特徴とする無機硬化体の製法。
(1) A slurry containing cement and reinforcing fibers is made using a Fourdrinier paper machine to make a single-layer molded product, and then this is cured and cured to create an inorganic hardened product. Freeness level 30-60
The pulp adjusted to °SR is 1% based on the solid content of the blended raw materials.
A method for producing an inorganic cured body characterized by using ~7% air volume.
JP17021583A 1983-09-14 1983-09-14 Manufacture of inorganic cured body Pending JPS6061210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17021583A JPS6061210A (en) 1983-09-14 1983-09-14 Manufacture of inorganic cured body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17021583A JPS6061210A (en) 1983-09-14 1983-09-14 Manufacture of inorganic cured body

Publications (1)

Publication Number Publication Date
JPS6061210A true JPS6061210A (en) 1985-04-09

Family

ID=15900801

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17021583A Pending JPS6061210A (en) 1983-09-14 1983-09-14 Manufacture of inorganic cured body

Country Status (1)

Country Link
JP (1) JPS6061210A (en)

Similar Documents

Publication Publication Date Title
EP0027705B1 (en) Starch bound non-asbestos paper
US4637860A (en) Boards and panels
US2156308A (en) Art of manufacturing cement-fibrous products
JPS6159259B2 (en)
JPS599300A (en) Paper cover sheet for gypsum board, production thereof and produced gypsum board
JPH0225857B2 (en)
US3354031A (en) Cement-asbestos products and improvement in the manufacture thereof
EP0047158B2 (en) A process for the manufacture of fibre reinforced shaped articles
US20200207663A1 (en) Cellulose filaments reinforced cement composite board and method for the manufacture of the same
IE45447B1 (en) Improvements relating to asbestos-free fibre reinforced cementitious products
JPS6061210A (en) Manufacture of inorganic cured body
JPS5973463A (en) Inorgnic hardened body
JPS6186473A (en) Manufacture of inorganic formed article
JPS605049A (en) Manufacture of inorganic hardened body
KR100328266B1 (en) Non-asbestos slate and method of preparing the same
EP0027706A1 (en) Latex bound non-asbestos paper
JPS59203747A (en) Manufacture of inorganic hardened body
JPS63235600A (en) Production of mineral fiberboard
JP3324929B2 (en) Manufacturing method of inorganic plate
JPS616167A (en) Hydraulic inorganic papered product and manufacture
JPS615940A (en) Laminated board
JPS58156100A (en) Production of high strength fire retardant heat insulating board
JPS60161362A (en) Fiber reinforced hydraulic inorganic paper product and manufacture
JPS59232805A (en) Manufacture of fiber reinforced cement board
JPH07292845A (en) Production of hydraulic cement board