JPS586696B2 - Method for manufacturing mineral fiberboard - Google Patents
Method for manufacturing mineral fiberboardInfo
- Publication number
- JPS586696B2 JPS586696B2 JP12427280A JP12427280A JPS586696B2 JP S586696 B2 JPS586696 B2 JP S586696B2 JP 12427280 A JP12427280 A JP 12427280A JP 12427280 A JP12427280 A JP 12427280A JP S586696 B2 JPS586696 B2 JP S586696B2
- Authority
- JP
- Japan
- Prior art keywords
- mineral
- weight
- fiberboard
- mineral fiberboard
- retention
- 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
Links
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Paper (AREA)
Description
【発明の詳細な説明】
本発明は岩綿、鉱滓綿、グラスウール等の鉱物質繊維を
繊維成分とする鉱物質繊維板の製造方法に関するもので
あり、人体に悪影響を与えるアスベストを用いることな
しに、硬度、強度、耐火性等の諸性能に優れた鉱物質繊
維板を製造する方法を提供するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a mineral fiberboard whose fiber components are mineral fibers such as rock wool, mineral wool, and glass wool, without using asbestos, which has an adverse effect on the human body. The present invention provides a method for producing mineral fiberboard with excellent properties such as hardness, strength, and fire resistance.
一般に、鉱物質繊維板の製造方法には、鉱物質繊維を適
正量の結合剤や添加剤と共に、10〜100倍に相当す
る多量の水中に均一に分散せしめて水性スラリーとし、
これを抄造、成型した後、乾燥、硬化せしめる湿式抄造
法、及び鉱物質繊維に適正量の結合剤や添加剤を添加せ
しめた混合物に、該混合物の2〜3倍の水を加え、これ
をペースト状に練り、押出、または圧延して板状に成型
し、更に乾燥、固化せしめるペースト法がある。Generally, the manufacturing method of mineral fiberboard involves uniformly dispersing mineral fibers in a large amount of water equivalent to 10 to 100 times the amount of mineral fibers together with appropriate amounts of binders and additives to form an aqueous slurry.
After papermaking and molding, the wet papermaking method is used to dry and harden the paper, and 2 to 3 times as much water as the mixture is added to a mixture of mineral fibers and appropriate amounts of binders and additives. There is a paste method in which the material is kneaded into a paste, extruded or rolled to form a plate, and then dried and solidified.
特に、前者の湿式抄造法においては、量産での生産性に
優れているのが特徴であり、その固形成分中の一成分と
して、有機結合削のリテンション作用、及び固着作用が
著しく優れているアスベストを使用することが必要、不
可欠の要件とされている。In particular, the former wet papermaking method is characterized by its excellent productivity in mass production, and as one of its solid components, asbestos, which has extremely excellent retention and fixation effects for organic bond cutting, is It is necessary and essential to use the
この湿式抄造法において、有機結合剤の使用量を少なく
し、得られる鉱物質繊維板の耐火性を維持しつつ、尚、
且つ鉱物質繊維板に要求される硬度と強度とを満足せし
めるためには、前述のアスベストをリテンション、固着
材として使用することが必須の要件とされているのが実
情である。This wet papermaking method reduces the amount of organic binder used and maintains the fire resistance of the resulting mineral fiberboard.
In addition, in order to satisfy the hardness and strength required for mineral fiberboards, the actual situation is that it is essential to use the above-mentioned asbestos as a retention and fixing material.
然しなから、前記アスベストは天然物であるために原料
が枯渇し価格が高くなってきていること、更に、アスベ
スト粉塵が肺がんの原因となる恐れがあるため、使用環
境の制限が強化され、且つ労働省からもその使用量を5
%以下に抑えるよう勧告されていること等により、アス
ベストの使用量をできるだけ少量にした、或いは全く使
用しないで鉱物質繊維板を得る方法が望まれている。However, since asbestos is a natural product, the raw materials are depleted and the price is rising, and furthermore, asbestos dust may cause lung cancer, restrictions on the environment in which it can be used have been tightened. The Ministry of Labor also announced that the amount of
% or less, there is a desire for a method of obtaining mineral fiberboard using asbestos as little as possible, or without using it at all.
本発明は特許請求の範囲に記載せる構成とすることによ
り、前記アスベストを全く使用することなしに、耐火性
のみならず、硬度、強度のいずれにも優れた性能を具備
する鉱物質繊維板を得る方法を提供するものである。By having the configuration described in the claims, the present invention provides a mineral fiberboard that has excellent performance not only in fire resistance but also in hardness and strength, without using any asbestos. It provides a way to obtain
以下本発明の鉱物質繊維板の製造方法の構成を説明する
。The configuration of the method for manufacturing a mineral fiberboard of the present invention will be explained below.
本発明では、第1工程として、岩綿、鉱滓綿、グラスウ
ール等の鉱物質繊維50〜90重量%、パルプ、生澱粉
、煮沸澱粉、ポリビニルアルコール、ガーガム、酢酸ビ
ニルエマルジョン等の有機質結合剤2〜20重量%、リ
テンション、固着材たるアタパルジャイト1〜40重量
%、及び必要に応じてポリアクリルアミド、ポリアクリ
ルアミド変性物、硫酸アルミニウム等の結合助削3重量
%以下とを組成成分とする固形成分を10〜100倍に
相当する水中に分散し、前述の各固形成分が水中に分散
せしめられた1〜8重量%程度の分散液からなる水性ス
ラリーを形成する。In the present invention, as a first step, 50 to 90% by weight of mineral fibers such as rock wool, mineral wool, and glass wool, organic binder such as pulp, raw starch, boiled starch, polyvinyl alcohol, gar gum, vinyl acetate emulsion, etc. 20% by weight, 1 to 40% by weight of attapulgite as a retention and fixing agent, and 3% by weight or less of a binding aid such as polyacrylamide, polyacrylamide modified product, aluminum sulfate, etc. as necessary. to 100 times as much water to form an aqueous slurry consisting of a dispersion of about 1 to 8% by weight of each of the aforementioned solid components dispersed in water.
第2工程として、前記第1工程で得られた水性スラリー
を、フオードリニャー、丸網型等の抄造機を使用して抄
造、脱水する。As a second step, the aqueous slurry obtained in the first step is formed into paper and dehydrated using a paper making machine such as a paper mill, a circular mesh type, or the like.
更に最終工程として、得られた抄造シートを成型した後
、乾燥、硬化を完了せしめるものである。Furthermore, as a final step, after the obtained paper sheet is molded, drying and curing are completed.
本発明の鉱物質繊維板の製造方法は以上の通りの構成か
ら成るものであり、従来の鉱物質繊維板の製造方法にお
いて、リテンション、固着材として使用されているアス
ベストの代りに、アクパルジャイトを使用したことが特
長である。The method for manufacturing a mineral fiberboard of the present invention has the above-mentioned configuration, and in place of asbestos, which is used as a retention and fixing material in the conventional method for manufacturing a mineral fiberboard, acpulgite is used as a retention and fixing material. The feature is that it uses .
尚、本発明においてリテンション、固着材として使用す
るアクパルジャイトは、天然物であるため一定の化学式
では表示し難いが、例えば化学式Mg5SiBO20・
4H20等で示される複鎖構造型粘土であり、直径10
0A、長さ1〜数μ程度の針状結晶をなしており、水中
ではコロイド状に分散する性質を有し、その表面積は2
10m2/gと極めて大きく、高度の吸着性能を有する
ものである。Acpulgite used as a retention and fixing material in the present invention is a natural product, so it is difficult to express it with a certain chemical formula, but for example, it has the chemical formula Mg5SiBO20.
It is a double-chain structure type clay represented by 4H20, etc., and has a diameter of 10
0A, it forms needle-shaped crystals with a length of about 1 to several micrometers, and has the property of dispersing colloidally in water, with a surface area of 2
It is extremely large at 10 m2/g and has high adsorption performance.
本発明の鉱物質繊維板の製造方法においては、湿式抄造
用の水性スラリー中で、前記アタパルジャイトがコロイ
ド状をなし、その極めて大きな表面積と高度の吸着性能
により、水性スラリー中の有機結合剤のリテンションを
良好ならしめる作用を果し、有機結合削による鉱物質繊
維の結合を一層強固ならしめる作用を果すものである。In the method for manufacturing mineral fiberboard of the present invention, the attapulgite forms a colloid in the aqueous slurry for wet papermaking, and its extremely large surface area and high adsorption performance improve the retention of the organic binder in the aqueous slurry. It has the effect of making the mineral fibers better, and it also has the effect of making the bond of mineral fibers by organic bonding even stronger.
以下本発明の鉱物質繊維板の製造方法の具体的な構成を
実施例を以って説明し、併せ得られた鉱物質繊維板の性
質を、比較例で製造された鉱物質繊維板の性質と比較し
、説明する。Hereinafter, the specific structure of the method for manufacturing mineral fiberboard of the present invention will be explained with reference to Examples, and the properties of the mineral fiberboard obtained will also be explained. Compare and explain.
実施例1〜8
後記第1表の実施例1〜8欄に記載した各組成成分から
なる固形成分の4重量%水分散液による,水性スラリを
作製し、得られた水性スラリーを、実験室のテスト抄造
機で抄造、減圧脱水し、次いでプレス成型機でプレス成
型する。Examples 1 to 8 An aqueous slurry was prepared using a 4% by weight aqueous dispersion of the solid components consisting of the respective composition components listed in the Examples 1 to 8 columns of Table 1 below, and the resulting aqueous slurry was tested in a laboratory. Paper is made using a test paper making machine, dehydrated under reduced pressure, and then press molded using a press forming machine.
得られたプレス成型物を乾燥炉中で140℃、4時間乾
燥、硬化させ、厚さ12mmの8種類の鉱物質繊維板(
1)〜(■)を得た。The obtained press moldings were dried and cured in a drying oven at 140°C for 4 hours to form 8 types of mineral fiberboards with a thickness of 12 mm (
1) to (■) were obtained.
なお、固形成分中の有機質結合剤の1種である「パルプ
セルロース」は、パルプを叩解してTAPPI Sta
ndard Sheet Machineによる濾水時
間が400秒のゲル状セルローズ繊維の原液を、固形分
2重量%に相当する分量だけ添し加た。In addition, "pulp cellulose", which is a type of organic binder in the solid component, is obtained by beating the pulp and making it into TAPPI Sta.
A stock solution of gel-like cellulose fiber with a filtration time of 400 seconds using a ndard Sheet Machine was added in an amount corresponding to a solid content of 2% by weight.
また、結合助剤とじてのポリアクリルアミドは分子量5
0万のものを使用した。In addition, polyacrylamide as a binding agent has a molecular weight of 5
00,000 was used.
比較例1〜3
後記第1表の比較例1〜3欄に記載した各組成成分から
なる固形成分の4重量%水分散液による水性スラリーを
作製し、以後実施例と同様に操作し、3種類の鉱物質繊
維板(■)〜(XI)を得た。Comparative Examples 1 to 3 Aqueous slurries were prepared using 4% by weight aqueous dispersions of solid components consisting of the respective composition components listed in Comparative Examples 1 to 3 columns of Table 1 below, and thereafter operated in the same manner as in Examples. Types of mineral fiber boards (■) to (XI) were obtained.
以上の実施例及び比較例で使用した水性スラリーの成型
性、及び得られた鉱物質繊維板の密度、曲げ強度、圧縮
強度、灼熱収縮率等を併せ第1表に示す。Table 1 shows the moldability of the aqueous slurry used in the above Examples and Comparative Examples, as well as the density, bending strength, compressive strength, burning shrinkage rate, etc. of the obtained mineral fiberboard.
尚、水性スラリーの成型性は、各水性スラリ一を金網の
目の粗さ50メッシュ、金網部の大きさ400X400
mm,成型時の脱水部の真空度が1500mm水柱のテ
スト抄造機にて抄造する際の脱水時間である。The moldability of each aqueous slurry was determined by molding each aqueous slurry into a wire mesh with a mesh size of 50 mesh and a wire mesh section size of 400 x 400.
This is the dewatering time when papermaking is performed using a test papermaking machine with a vacuum degree of 1500mm water column in the dewatering section during molding.
また、得られた鉱物質繊維板の曲げ強度は、JISA5
907に従って測定した値であり、圧縮強度は繊維板を
厚さ方向に0.5mm/mmの速度で圧縮し、厚さが8
5%となったときの応力を面積で除した値で、灼熱収縮
率は繊維板を800±50℃で1時間灼熱したときのた
て方向及び横方向のそれぞれの寸法収縮率(%)である
。In addition, the bending strength of the obtained mineral fiberboard is JISA5
907, and the compressive strength is the value measured by compressing the fiberboard in the thickness direction at a rate of 0.5 mm/mm.
It is the value obtained by dividing the stress at 5% by the area, and the scorching shrinkage rate is the dimensional shrinkage rate (%) in the vertical and horizontal directions when the fiberboard is scorched at 800 ± 50 ° C for 1 hour. be.
第1表の結果より、水性スラリーの成型性を示す抄造時
濾水時間は、アクパルジャイトの添加量の増大とともに
急激に長くなるが、このことは生産速度が低下すること
を意味し、アタパルジャイトの添加量が40重量%を越
えることは生産効率の点から好ましくないことが明らか
である。From the results in Table 1, the drainage time during papermaking, which indicates the formability of aqueous slurry, increases rapidly as the amount of axapulgite added increases, but this means that the production rate decreases, and attapulgite It is clear that it is not preferable to add more than 40% by weight from the viewpoint of production efficiency.
また、得られる鉱物質繊維板の曲げ強さは、アクパルジ
ャイトが20重量%に達するまでは添加量とともに増大
するが、30重量%を越えると添加量の増大とともに逆
に低下してくる。Further, the bending strength of the obtained mineral fiberboard increases with the addition amount until the amount of acpulgite reaches 20% by weight, but conversely decreases as the addition amount exceeds 30% by weight.
これはアタパルジャイトが30重量%を越えると繊維板
中の鉱物質繊維の比率が60重量%を下回るため、この
ような結果が生じるものと思われる。It is thought that this result occurs because when the content of attapulgite exceeds 30% by weight, the ratio of mineral fibers in the fiberboard falls below 60% by weight.
圧縮強度は、アクパルジャイトが40重量%までは添加
量の増大とともに増大している。The compressive strength increases as the amount of acpulgite added increases up to 40% by weight.
これは鉱物質繊維間に充填されるアタパルジャイトの量
が増大するために、鉱物質繊維板が圧縮されにくくなる
ことによると思われる。This is thought to be because the amount of attapulgite filled between the mineral fibers increases, making it difficult for the mineral fiberboard to be compressed.
灼熱収縮率は、アクパルジャイト添加量が10重量%で
急激に向上しでいる。The ignition shrinkage rate sharply improved when the amount of acpulgite added was 10% by weight.
これは10重量%のアタパルジャイトの添加で有機結合
剤のリテンション作用が十分に発現され、鉱物質繊維の
結合が十分に強固になるためと思われる。This is thought to be because the addition of 10% by weight of attapulgite sufficiently exhibits the retention effect of the organic binder, making the bond between the mineral fibers sufficiently strong.
なお、リテンション、固着材としてアスベストを使用し
た場合と比較すると、添加量が同一の場合には、水性ス
ラリーの成型性を示す濾水時間、及び得られる鉱物質繊
維板の各物性とも略同等であり、アスベストによるリテ
ンション、固着材の代替物としてアクパルジャイトを使
用することにより、十分に満足される鉱物質繊維板を得
ることができることが明らかである。In addition, when compared with the case where asbestos is used as a retention and adhesion material, when the amount added is the same, the drainage time, which indicates the formability of the aqueous slurry, and the physical properties of the resulting mineral fiberboard are approximately the same. It is clear that a fully satisfactory mineral fiberboard can be obtained by using acpulgite as an alternative to asbestos retention and bonding material.
更に、第1表の結果より、特に20〜30重量%程度の
アクパルジャイトをリテンション、固着材として使用す
ることにより、水性スラリーの抄造時の濾水性を余り悪
化させることなく、工業的規模での高生産性を十分に維
持しつつ、しかも曲げ強度、圧縮強度等に優れた性質を
有する鉱物質繊維板を製造することができることが明ら
かである。Furthermore, from the results in Table 1, it is clear that by using 20 to 30% by weight of acpulgite as a retention and fixing material, it can be used on an industrial scale without significantly deteriorating the freeness of aqueous slurry during papermaking. It is clear that it is possible to produce a mineral fiberboard having excellent properties such as bending strength and compressive strength while sufficiently maintaining high productivity.
本発明の鉱物質繊維板の製造方法は以上の通りの構成か
ら成るものであり、従来の湿式抄造法における鉱物質繊
維板の製造でリテンション、固着材として使用していた
アスベストを全く用いることなしに、しかも生産性を低
下させることなく、硬度、強度、耐火性等に優れた性質
を有する鉱物質繊維板を製造することができ、価格の面
のみならず、操業者の健康、衛生の面からも多犬のメリ
ットを有するものである。The method for manufacturing mineral fiberboard of the present invention has the above-described structure, and does not use any asbestos, which is used as a retention and fixing material in the manufacturing of mineral fiberboard using the conventional wet papermaking method. Moreover, it is possible to produce mineral fiberboard with excellent properties such as hardness, strength, and fire resistance without reducing productivity, which is not only cost-effective but also improves the health and hygiene of operators. It also has the advantage of having multiple dogs.
Claims (1)
0重量%、リテンション、固着材たるアタパルジャイト
1〜40重量%、及び必要に応じて更に3重量%以下の
結合助剤を組成成分とする固形成分を水中に分散せしめ
て得られる水性スラリーを、抄造、成型した後、乾燥、
硬化せしめることを特徴とする鉱物質繊維板の製造方法
。1 Mineral fiber 50-90% by weight, organic binder 2-2
An aqueous slurry obtained by dispersing in water a solid component containing 0% by weight, retention, 1 to 40% by weight of attapulgite as a fixing agent, and optionally 3% by weight or less of a binding aid. , after molding, drying,
A method for producing a mineral fiberboard, which comprises curing the mineral fiberboard.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12427280A JPS586696B2 (en) | 1980-09-08 | 1980-09-08 | Method for manufacturing mineral fiberboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12427280A JPS586696B2 (en) | 1980-09-08 | 1980-09-08 | Method for manufacturing mineral fiberboard |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5747751A JPS5747751A (en) | 1982-03-18 |
JPS586696B2 true JPS586696B2 (en) | 1983-02-05 |
Family
ID=14881224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12427280A Expired JPS586696B2 (en) | 1980-09-08 | 1980-09-08 | Method for manufacturing mineral fiberboard |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS586696B2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60122711A (en) * | 1983-12-08 | 1985-07-01 | Oji Paper Co Ltd | Manufacture of porous carbon board |
JPS63235600A (en) * | 1987-03-20 | 1988-09-30 | 日東紡績株式会社 | Production of mineral fiberboard |
JPS6461599A (en) * | 1987-08-26 | 1989-03-08 | Nitto Boseki Co Ltd | Mineral fiberboard |
JPH01201054A (en) * | 1988-02-04 | 1989-08-14 | Masahiro Kobayashi | Production of unsintered ceramics |
JP2007291585A (en) * | 2006-04-25 | 2007-11-08 | Showa Kde Co Ltd | Filament-like palygorskite powder excellent in heat resistance, chemical resistance, abrasion resistance and the like, and method for producing the same |
CN106904880A (en) * | 2015-12-23 | 2017-06-30 | 北新集团建材股份有限公司 | A kind of mineral wool board with antibacterial functions and preparation method thereof |
CN115768944A (en) * | 2020-07-10 | 2023-03-07 | 株式会社巴川制纸所 | Flame-retardant sheet |
-
1980
- 1980-09-08 JP JP12427280A patent/JPS586696B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5747751A (en) | 1982-03-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1197863A (en) | Boards and sheets | |
US7621087B2 (en) | Inorganic board and method for manufacturing thereof | |
US3804706A (en) | Inorganic fiber board with binder of thermosetting resin and thermoplastic vinylic resin | |
US2705198A (en) | Wallboard composition and method of making same | |
DE2520156A1 (en) | MONOLITHIC BALL | |
JP5006425B2 (en) | Wood cement board and manufacturing method thereof | |
JPS586696B2 (en) | Method for manufacturing mineral fiberboard | |
US4352719A (en) | Method for producing combustion resistant fibrous products | |
DE1246515B (en) | Process for the production of building and insulating panels | |
US2326516A (en) | Compressed and densified product and the method of making the same | |
EP0367023A1 (en) | Production of mouldings based on a particulate additive, and a binding agent containing an acrylate polymer | |
US2944930A (en) | Fiberboard | |
JPS6054440B2 (en) | Method for manufacturing mineral fiberboard | |
US1978923A (en) | Composition board | |
JPH0238720B2 (en) | ||
JP3282920B2 (en) | Manufacturing method of inorganic plate | |
US2639989A (en) | Treatment of cellulosic pulps | |
JPS61296200A (en) | Production of mineral fiberboard | |
JPS59112100A (en) | Non-asbesto flexible sheet material | |
DE898964C (en) | Process for the production of lightweight building materials from waste wood | |
JPH0438705B2 (en) | ||
JP5714923B2 (en) | INORGANIC PLATE AND METHOD FOR PRODUCING INORGANIC PLATE | |
JPS582817B2 (en) | Manufacturing method of rock wool board | |
JPS5839062B2 (en) | Method for producing a lightweight plate-like body made of rice husk as the main material | |
CH567638A5 (en) | Fibre panel - bonded with a starch reacted with phthalic or succinic anhydride in alkaline medium |