JPS5991008A - Paper forming method for cement-based board materials - Google Patents
Paper forming method for cement-based board materialsInfo
- Publication number
- JPS5991008A JPS5991008A JP20157382A JP20157382A JPS5991008A JP S5991008 A JPS5991008 A JP S5991008A JP 20157382 A JP20157382 A JP 20157382A JP 20157382 A JP20157382 A JP 20157382A JP S5991008 A JPS5991008 A JP S5991008A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- forming method
- board materials
- paper forming
- based board
- 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
(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】
不発明は七メント系板利の抄造成形法の改良に関するイ
）のである。DETAILED DESCRIPTION OF THE INVENTION The non-invention relates to (a) an improvement in the method for forming and molding a seven-mention type plate.
一しメント系＆利の製造方法の一つとして抄造成ｔｈｅ
法がある。この方法においては、セメントを主成分と１
７、百にｈｌ、バルブ等の繊維を添加したスラリーをバ
ットに供給し、バット内の丸網シリンターによって繊維
含有セメントを抄取り、このシリンター−１この抄取り
膜をシリンダーに接して回転中のフェルトベルトに移し
、このベル１−１の抄取り膜をそのベルトに接して回転
中のメーキングロールで巻取り、巻取り厚みが所定厚（
５〜１０ ｍｍ ）に達すると、巻取積層体を切開して
メーキングロールから分離１７、次いで、これを養生硬
化しており、この養生硬化に至るまでの未硬化乃至半硬
化の段階に、所定寸法への切断、切断片の積載等の諸］
−：程がある。As one of the manufacturing methods of Ichishimento & Ri, the
There is a law. In this method, cement is the main component and
7. Supply the slurry to which fibers such as HL, valve, etc. have been added to a vat, and remove the fiber-containing cement using a circular syringe in the vat. Transfer it to a felt belt, and wind up the paper film of this belt 1-1 with a rotating making roll in contact with the belt until the winding thickness is a predetermined thickness (
5 to 10 mm), the wound laminate is cut open and separated from the making roll 17, and then cured and cured. Cutting to size, loading cut pieces, etc.]
-: Moderate.
ところで、上記の抄造法において、抄造シリンダーによ
るセメント固彫物の抄」―げ効率を向上させるために、
セメントスラリー（水量は固形分の１０− ５０倍）に
セメント凝結促進剤を添加し、セメントをその微粒子の
凝結によりフロック抜上することか公知である。By the way, in the above-mentioned paper-making method, in order to improve the efficiency of making solid cement carvings using a paper-making cylinder,
It is known that a cement setting accelerator is added to a cement slurry (the amount of water is 10 to 50 times the solid content), and the cement is flocculated by coagulation of fine particles thereof.
□而るに、セメン）・粒子の凝結性は、凝結中心となる
核の発生１７易ざが微妙に関与し、セメント粒子Ｆ Ｗ
の局所を、接近−イオンにより電場的に刺激すれば核の
発生を促ずこ七かでき、従つＣ、アルカリ金属の塩類の
添加はセメン） ％子の凝結促進に有効である。しかし
ながら、これら塩類を上記スラリーに添加しても、セメ
ントのフロック化は起らず、従って、セメント固形物の
抄１げ効率の向−１，という面からは、その添加は無意
味である。□However, the setting property of particles (cement) is subtly affected by the generation rate of the nucleus, which is the center of setting, and the cement particle FW
If the local area of C is stimulated by an electric field using approaching ions, this can be done without promoting the generation of nuclei. Therefore, the addition of C and alkali metal salts is effective in accelerating the coagulation of C and C. However, even if these salts are added to the slurry, flocculation of cement does not occur, and therefore, their addition is meaningless in terms of improving the efficiency of milling cement solids.
か＼る事実にもか＼わらず、本発明者等の実験ホー、果
によれば、上記塩類の添加は抄−４−げから１記σ）最
終養生に至るまでの間において未硬化乃ろく半硬佳品の
凝結を促進し、前記したり断、積・伐工稈での半製品の
クランク防止に有効であることが明らかとなった。Despite this fact, according to the results of experiments conducted by the present inventors, the addition of the above-mentioned salts was effective in preventing uncured particles from the time of cutting to the final curing. It has been found that it is effective in promoting the coagulation of semi-hard products and preventing cranking of semi-finished products during cutting, piling, and logging as described above.
セメントスラリー中から抄き上げられたセメント粒子は
、その粒子表面が多量の水で洗われて活性が低ドしてい
るため、凝結し難く、この２にめ、上記した半製品段階
（未養生〜半養生）での強度が著し、く小さく、従来に
おいては、上記の積載、切断工程でのクラック発生率が
相当に大きく問題となっていた。Cement particles extracted from cement slurry have a low activity due to the surface of the particles being washed with a large amount of water, making them difficult to set. The strength after half-curing is extremely low, and in the past, the rate of crack occurrence during the above-mentioned loading and cutting processes was quite large, which was a problem.
本発明はか＼る不利を上記塩類の添加によって角了ン肖
することにある。The present invention aims to overcome these disadvantages by adding the above-mentioned salts.
すなわち、本発明に係るセメント系仮相の抄造成Ｊｉｔ
法は、セメントを主成分とするスラリーから抄造法によ
りセメント系板材を製造する方法において、Ｌｊ、Ｏ６
，Ｎａ１ｌ、 ＫＯ７，Ｎａ２ＳＯ４，Ｋ２ＳＯ４等の
塩類の少なくとも一＝一種をセメント固形分に対し０．
２５〜５，０％の範囲内で添加することを特徴とする方
法である。That is, the cement-based temporary phase paper-making JIT according to the present invention
The method is a method of manufacturing cement-based board materials from a slurry whose main component is cement by a papermaking method, in which Lj, O6
, Na1l, KO7, Na2SO4, K2SO4, etc. at least one salt is added to the cement solid content in an amount of 0.
This method is characterized by adding within the range of 25 to 5.0%.
本発明において塩類の添加量をセメント固形分に対し０
．２５〜５．０％（重量％）とした理由は、０．２５％
以下では塩類添加による凝結促進効果が発現ぜす、５，
０％以上では製品強度が低下するからである。In the present invention, the amount of salts added is 0 to the solid content of cement.
．． The reason for setting it to 25 to 5.0% (weight%) is 0.25%
In the following, the effect of accelerating coagulation due to the addition of salts appears, 5.
This is because if it exceeds 0%, the strength of the product decreases.
この塩類の添加は、スラリー（水量は固形分の１０〜５
０倍）、抄造シリンダー、抄造ヘルドの何れにおいても
行うことかできる。This addition of salts is made into a slurry (the amount of water is 10 to 5% of the solid content).
(0x), it can be carried out in either a papermaking cylinder or a papermaking heald.
本発明に係るセメント系板利の抄造成形法によれば、Ｋ
２ＳＯ４等の塩類のために、最終的な養生硬化までにお
ける未硬化ないし半硬化のセメント系仮相の凝結を促進
し得、その仮相の強度を増大できるから、未硬化ないし
半硬化段階における切断、積載時での板材のクラック発
生を防止できる。According to the paper forming method for cement-based plate according to the present invention, K
Salts such as 2SO4 can promote the solidification of the unhardened or semi-hardened cementitious phase until the final curing and hardening, and can increase the strength of the temporary phase. , it is possible to prevent the occurrence of cracks in the plate materials during loading.
Claims (1)
、１、り士メント系板４」を製造する方法において、Ｌ
ｉｅ／、 Ｎａ１ｊ／！、 ＫＯ７！、 Ｎａ２ＳＯ４
，Ｋ２ＳＯ４等の塩類の少なく吉も−・種をセメント固
形分に対し０．２５〜５．０％の１ｌｉｔｌｔ囲内で添
加するこ七を特徴と゛するセメンｊ・系＆利の抄造成形
法。0) In the papermaking method from a slurry whose main component is cement,
ie/, Na1j/! , KO7! , Na2SO4
, K2SO4, etc., are added in an amount of 0.25 to 5.0% to the cement solid content within 1 liter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20157382A JPS5991008A (en) | 1982-11-16 | 1982-11-16 | Paper forming method for cement-based board materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20157382A JPS5991008A (en) | 1982-11-16 | 1982-11-16 | Paper forming method for cement-based board materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5991008A true JPS5991008A (en) | 1984-05-25 |
Family
ID=16443296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20157382A Pending JPS5991008A (en) | 1982-11-16 | 1982-11-16 | Paper forming method for cement-based board materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5991008A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986000612A1 (en) * | 1984-07-17 | 1986-01-30 | Shigetomi Komatsu | Resistance heating element |
| JPS62154901A (en) * | 1985-12-27 | 1987-07-09 | Shimada Phys & Chem Ind Co Ltd | coaxial waveguide converter |
-
1982
- 1982-11-16 JP JP20157382A patent/JPS5991008A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986000612A1 (en) * | 1984-07-17 | 1986-01-30 | Shigetomi Komatsu | Resistance heating element |
| JPS62154901A (en) * | 1985-12-27 | 1987-07-09 | Shimada Phys & Chem Ind Co Ltd | coaxial waveguide converter |
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