JPS63436Y2 - - Google Patents
Info
- Publication number
- JPS63436Y2 JPS63436Y2 JP5352483U JP5352483U JPS63436Y2 JP S63436 Y2 JPS63436 Y2 JP S63436Y2 JP 5352483 U JP5352483 U JP 5352483U JP 5352483 U JP5352483 U JP 5352483U JP S63436 Y2 JPS63436 Y2 JP S63436Y2
- Authority
- JP
- Japan
- Prior art keywords
- gypsum
- gypsum board
- weight
- fibers
- paperboard
- 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
- 239000010440 gypsum Substances 0.000 claims description 72
- 229910052602 gypsum Inorganic materials 0.000 claims description 72
- 239000011087 paperboard Substances 0.000 claims description 18
- 239000011162 core material Substances 0.000 claims description 17
- 239000010456 wollastonite Substances 0.000 claims description 14
- 229910052882 wollastonite Inorganic materials 0.000 claims description 14
- 239000000835 fiber Substances 0.000 description 22
- 239000010425 asbestos Substances 0.000 description 11
- 229910052895 riebeckite Inorganic materials 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000003365 glass fiber Substances 0.000 description 9
- 239000002002 slurry Substances 0.000 description 9
- 239000011490 mineral wool Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000012784 inorganic fiber Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- -1 adhesion aids Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000010455 vermiculite Substances 0.000 description 2
- 235000019354 vermiculite Nutrition 0.000 description 2
- 229910052902 vermiculite Inorganic materials 0.000 description 2
- 206010058467 Lung neoplasm malignant Diseases 0.000 description 1
- 206010027406 Mesothelioma Diseases 0.000 description 1
- 241000283220 Odobenus rosmarus Species 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 201000005202 lung cancer Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Building Environments (AREA)
- Laminated Bodies (AREA)
Description
【考案の詳細な説明】
本考案は、耐火性に優れた建築用不燃性石膏ボ
ードに関する。[Detailed Description of the Invention] The present invention relates to a noncombustible architectural gypsum board with excellent fire resistance.
最近、耐火性建築用内装材として石膏ボードが
広く使用されている。その石膏ボードは、概し
て、繊維補強材、発泡材、接着補助剤、石膏硬化
調整剤等の副資材の少量と石膏とからなる板状の
石膏芯と、これを接着被覆している石膏ボード用
板紙とで構成されている。そして、その石膏芯に
含有される繊維補強材には、有機質と無機質のも
のが有るが、耐火性の点から不燃性の無機質繊維
の使用が好ましく、一般に石綿繊維、ガラス繊維
又は岩綿繊維が広く使用されている。その理由
は、それらの無機繊維の最高安全使用温度（石綿
約400℃、ガラス300〜350℃、岩綿500〜600℃）
が石膏の脱水温度より高いことによるものであ
る。 Recently, gypsum board has been widely used as a fire-resistant architectural interior material. The gypsum board generally consists of a plate-shaped gypsum core made of gypsum and a small amount of auxiliary materials such as fiber reinforcing materials, foam materials, adhesion aids, and gypsum hardening regulators, and a gypsum board that is adhesively coated. It is made up of paperboard. There are organic and inorganic fiber reinforcing materials contained in the gypsum core, but from the viewpoint of fire resistance, it is preferable to use nonflammable inorganic fibers, and generally asbestos fibers, glass fibers, or rock wool fibers are used. Widely used. The reason for this is the maximum safe operating temperature of those inorganic fibers (asbestos approx. 400℃, glass 300-350℃, rock wool 500-600℃).
This is because the temperature is higher than the dehydration temperature of gypsum.
即ち、石膏自体は約21重量％の結晶水を有して
おり、火災の際に100〜200℃で潜熱を吸収してそ
の結晶水を放出し、それで結晶水が消失する迄、
石膏裏面の温度を上記の結晶水放出温度以下に保
つ遮熱効果を発揮するから、石膏を使用すること
により延焼防止効果が得られる。しかし、石膏は
結晶水の放出と同時に体積の収縮を起こし、それ
で亀裂が生じ、その亀裂を通して熱気が通過し或
いは強度が劣化して石膏ボードの形状を保ち得な
くなり、耐火板としての機能を失うに到るので、
予め石膏芯中に前記の最高安全使用温度が約300
℃以上である無機質繊維を含有せしめておくこと
により亀裂の巾を微小におさえて熱気の通過量を
少くし且つ強度低下による形状の崩壊を抑制して
延焼を防止するのである。 That is, gypsum itself has about 21% by weight of water of crystallization, and in the event of a fire, it absorbs latent heat at 100 to 200°C and releases the water of crystallization, until the water of crystallization disappears.
Since it exhibits a heat shielding effect that keeps the temperature on the back side of the gypsum below the above-mentioned crystallized water release temperature, the use of gypsum can prevent the spread of fire. However, gypsum shrinks in volume at the same time as crystal water is released, resulting in cracks, through which hot air passes through or the strength deteriorates, making the gypsum board unable to maintain its shape and losing its function as a fireproof board. So,
The above-mentioned maximum safe operating temperature is approximately 300℃ in advance in the plaster core.
By containing inorganic fibers that have a temperature of at least .degree. C., the width of the cracks is kept small to reduce the amount of hot air passing through, and the collapse of the shape due to a decrease in strength is suppressed, thereby preventing the spread of fire.
しかし乍ら、石綿繊維の使用は、石綿粉じんに
ばく露した労働者に肺ガン又は中皮腫が多発する
ことから社会的に問題とされ各種石綿製品に於い
ては、その代替物の導入が強く要請されている。 However, the use of asbestos fibers has become a social problem due to the frequent occurrence of lung cancer or mesothelioma in workers exposed to asbestos dust, and the introduction of substitutes for various asbestos products has become a problem. It is strongly requested.
又、石綿繊維、ガラス繊維及び岩綿繊維のいず
れの場合も石膏ボードの製造上に問題があつた。
即ち、石綿繊維、ガラス繊維又は岩綿繊維と前記
のその他の副資材及び焼石膏を水で混練してスラ
リーを形成し、そのスラリーを２枚の石膏ボード
用板紙の間に流して板状に成型し、接着、硬化、
乾燥させることからなる石膏ボードの製造に於い
て、石綿繊維、ガラス繊維又は岩綿繊維と焼石膏
との混合が困難であるためにスラリー中に各繊維
が均一に分散されず、従つて製品の品質が一定せ
ず、耐火性に安定した石膏ボードは得られなかつ
た。更に、ガラス繊維に至つては、その取扱い作
業中にその破片が肌について痛く、作業性にも問
題があつた。 Furthermore, problems have arisen in the production of gypsum boards in the case of asbestos fibers, glass fibers, and rock wool fibers.
That is, asbestos fibers, glass fibers, or rock wool fibers, the other auxiliary materials mentioned above, and calcined gypsum are kneaded with water to form a slurry, and the slurry is poured between two sheets of gypsum board paperboard to form a board. Molding, gluing, curing,
In the production of gypsum board, which involves drying, it is difficult to mix asbestos fibers, glass fibers, or rock wool fibers with calcined gypsum, so each fiber is not uniformly dispersed in the slurry, and therefore the product The quality was inconsistent, and gypsum board with stable fire resistance could not be obtained. Furthermore, when it came to glass fibers, the pieces of glass fibers were painful to the skin during handling, and there were problems in workability.
本考案者は、上記の諸欠点を排除すべく鋭意研
究を重ねた結果、石綿繊維やガラス繊維や岩綿繊
維の代替物として繊維状ウオラストナイトを使用
することにより、上記の諸問題が解決されること
を見出した。 As a result of intensive research to eliminate the above-mentioned drawbacks, the inventor of the present invention has solved the above-mentioned problems by using fibrous wollastonite as a substitute for asbestos fibers, glass fibers, and rock wool fibers. I found out that it can be done.
本考案の不燃性の石膏ボードは、図面に示すよ
うに石膏を主体とする芯材１と、これを接着被覆
している石膏ボード用板紙２とからなる石膏ボー
ドに於いて、該芯材１中に繊維状ウオラストナイ
トが含有されていることを特徴とする。図面は本
考案の石膏ボードの断面を示し、１は石膏主体中
に繊維状ウオラストナイトが含有された板状体の
石膏芯であり、２は石膏芯１を接着被覆した石膏
ボード用板紙である。 As shown in the drawing, the non-combustible gypsum board of the present invention is a gypsum board consisting of a core material 1 mainly made of gypsum and a gypsum board paperboard 2 covering the core material 1 with adhesive. It is characterized by containing fibrous wollastonite. The drawing shows a cross section of the gypsum board of the present invention, where 1 is a gypsum core in the form of a plate containing fibrous wollastonite in the main body of gypsum, and 2 is a paperboard for gypsum board coated with adhesive on the gypsum core 1. be.
本考案の石膏ボードは、焼石膏と繊維状ウオラ
ストナイトとを適量の水で混練したスラリーを２
枚の石膏ボード用板紙の間に流して板状に成型
し、接着硬化、乾燥させて得られる。この際の繊
維状ウオラストナイトの添加量は、焼石膏100重
量部当り0.2〜30重量部が好ましく、添加量が0.2
重量部未満では、火災時に於ける前記の延焼防止
効果が小さく、また30重量部を超えると石膏芯と
石膏ボード用板紙との接着が低下するなど、品質
に悪影響を与える。又、繊維の長さについては、
ウオラストナイトは水に沈み易いので、石綿繊維
やガラス繊維や岩綿繊維と異つて、石膏−水系に
おいて分散混合され易く、従つて繊維長さの上限
は問題にならない。繊維長さの下限は、加熱によ
り石膏ボードの表面に生ずる微小クラツクの亀裂
巾を最小にし得る長さである。この長さは、一概
には決められないが、１mm以上のものが好まし
い。 The gypsum board of the present invention is made by mixing two slurries of calcined gypsum and fibrous wollastonite with an appropriate amount of water.
It is obtained by pouring it between sheets of gypsum board, forming it into a plate shape, curing the adhesive, and drying it. The amount of fibrous wollastonite added at this time is preferably 0.2 to 30 parts by weight per 100 parts by weight of calcined gypsum, and the amount added is 0.2 parts by weight.
If the amount is less than 30 parts by weight, the effect of preventing the spread of fire in the event of a fire will be small, and if it exceeds 30 parts by weight, the adhesion between the gypsum core and the paperboard for gypsum board will deteriorate, resulting in an adverse effect on quality. Also, regarding the length of the fiber,
Since wollastonite easily sinks in water, unlike asbestos fibers, glass fibers, and rock wool fibers, it is easily dispersed and mixed in a gypsum-water system, so the upper limit of the fiber length is not a problem. The lower limit of the fiber length is a length that can minimize the width of microcracks that occur on the surface of the gypsum board due to heating. Although this length cannot be determined unconditionally, it is preferably 1 mm or more.
尚、本考案の石膏ボードの製造に際し、目的と
する本考案の石膏ボードの種々の物性を改良する
ために、スラリー中に、石膏の脆さを補強する故
紙パルプ等の有機繊維、軽量化のためのアルキル
ベンゼンスルフオン酸塩やアルキルスルフオン酸
塩等の発泡剤、石膏芯と石膏ボード用板紙との接
着を良好にする澱粉やポリビニルアルコール
（PVA）等の接着補助剤、耐火性向上のための未
焼成ひる石や軽量化するためのパーライト等の骨
材、硫酸塩等の石膏硬化調整剤及びその他の添加
剤を若干量加えることができる。 In addition, when manufacturing the gypsum board of the present invention, in order to improve various physical properties of the gypsum board of the present invention, organic fibers such as waste paper pulp to reinforce the brittleness of gypsum and organic fibers to reduce weight are added to the slurry. Foaming agents such as alkylbenzene sulfonates and alkyl sulfonates to improve the adhesion between the gypsum core and gypsum board paperboard, adhesion aids such as starch and polyvinyl alcohol (PVA) to improve fire resistance. A small amount of aggregate such as uncalcined vermiculite or perlite for weight reduction, a gypsum hardening regulator such as sulfate, and other additives may be added.
又、添加する繊維状ウオラスナイトに長柱状又
は粒状結晶のウオラスナイトが混在していても良
い。 Moreover, long columnar or granular crystals of volath night may be mixed in the fibrous volath night to be added.
更に、石膏ボード用板紙２は、可燃性の板紙
（普通の石膏ボード用板紙）であつてもよく、ま
たウオラスナイト等の無機物をパルプに混入して
抄造した不燃性の石膏ボード用板紙（例えば実願
昭58−33981号明細書（実開昭59−157500号）に
記載のもの）を石膏芯１の少くとも一面に使用し
てもよい。そして、不燃性の石膏ボード用板紙を
使用する時は、それが、耐火性を強化するので、
その分、石膏ボードの板厚を薄くして、同じ耐火
性を維持したまま軽量化することが出来る。 Furthermore, the gypsum board paperboard 2 may be a combustible paperboard (ordinary gypsum board paperboard), or may be a noncombustible gypsum board paperboard made by mixing an inorganic substance such as walrus night into pulp (for example, a real gypsum board paperboard). The material described in Japanese Patent Application No. 58-33981 (Utility Model Application No. 59-157500) may be used on at least one surface of the gypsum core 1. And when using non-combustible drywall paperboard, it enhances fire resistance.
By reducing the thickness of the gypsum board, it is possible to reduce the weight while maintaining the same fire resistance.
また、本考案の石膏ボードの製造に当つては、
通常の石膏ボードの製造装置をそのまま運用でき
る。 In addition, in manufacturing the gypsum board of the present invention,
Regular gypsum board manufacturing equipment can be operated as is.
尚、石膏ボード用板紙を使用しない石膏芯のみ
の板状体やその他の形状であつても繊維状ウオラ
ストナイトは強度の向上や耐火性の向上に有効で
あり、従つて繊維状ウオラストナイトは耐火性に
優れた建築用不燃性石膏板にも使用出来る。 Furthermore, fibrous wollastonite is effective in improving strength and fire resistance even if it is a plate-like body with only a gypsum core or other shapes that do not use gypsum board paperboard, so fibrous wollastonite It can also be used for noncombustible gypsum boards for construction, which have excellent fire resistance.
以下に、本考案の石膏ボードの製造例を示す。 An example of manufacturing the gypsum board of the present invention is shown below.
例 １
焼石膏100重量部、繊維状ウオラストナイト15
重量部、未焼成ひる石５重量部、PVA0.7重量部
及びアルキルベンゼンスルフオン酸ソーダ0.07重
量部を80重量部の水で混練してスラリーを形成
し、このスラリーを２枚の普通の石膏ボード用板
紙の間に流して板状に成型し、接着、硬化、乾燥
させて厚さ12mm、重量9.1Kg／m2の不燃性の石膏
ボードを製造した。Example 1 100 parts by weight of calcined gypsum, 15 parts by weight of fibrous wollastonite
5 parts by weight of uncalcined vermiculite, 0.7 parts by weight of PVA and 0.07 parts by weight of sodium alkylbenzenesulfonate are mixed with 80 parts by weight of water to form a slurry, and this slurry is mixed between two sheets of ordinary gypsum board. The mixture was poured between paperboards to form a plate, adhered, cured, and dried to produce a noncombustible gypsum board with a thickness of 12 mm and a weight of 9.1 kg/m 2 .
例 ２
焼石膏100重量部、繊維状ウオラストナイト15
重量部、PVA0.7重量部、アルキルベンゼンスル
フオン酸ソーダ0.05重量部を80重量部の水で混練
してスラリーを形成し、このスラリーを２枚のウ
オラストナイトを混抄した不燃性の石膏ボード用
板紙の間に流して成型し、接着、硬化、乾燥させ
て厚さ７mm、重量6.2Kg／m2の不燃性の石膏ボー
ドを製造した。Example 2 100 parts by weight of calcined gypsum, 15 parts by weight of fibrous wollastonite
Part by weight, 0.7 part by weight of PVA, and 0.05 part by weight of sodium alkylbenzenesulfonate are mixed with 80 parts by weight of water to form a slurry, and this slurry is mixed with two sheets of wollastonite for use in non-combustible gypsum board. The mixture was molded by pouring it between paperboards, adhesively bonded, cured, and dried to produce a noncombustible gypsum board with a thickness of 7 mm and a weight of 6.2 kg/m 2 .
上記の例−１及び例−２で得られた本考案の不
燃性の石膏ボードは、石膏芯１に含有された繊維
状ウオラストナイトが均一に分散されており、耐
火性にむらがなく、更に、石綿繊維、ガラス繊
維、岩綿繊維等の無機繊維を石膏芯１に含有せし
めた或いは、これに不燃性の石膏ボード用板紙を
被覆した従来の建設省で定める不燃性の石膏ボー
ドと比較して、同等の耐火性を有するばかりでな
く、同等の強度や接着等の物性を有し優るとも劣
らない結果で耐火性建築用内装材として優れたも
のであつた。 The non-combustible gypsum boards of the present invention obtained in Example-1 and Example-2 above have the fibrous wollastonite contained in the gypsum core 1 uniformly dispersed, and have uniform fire resistance. Furthermore, a comparison was made with conventional non-combustible gypsum board specified by the Ministry of Construction, in which the gypsum core 1 contains inorganic fibers such as asbestos fibers, glass fibers, and rock wool fibers, or is coated with non-combustible gypsum board paperboard. As a result, it not only had the same fire resistance, but also the same physical properties such as strength and adhesion, and was superior as a fire-resistant interior material for buildings.
図面は、本考案の石膏ボードの断面図である。
図中、１は石膏主体中に繊維状ウオラストナイ
トが含有された板状体の石膏芯、２は石膏ボード
用板紙である。
The drawing is a cross-sectional view of the gypsum board of the present invention. In the figure, 1 is a gypsum core of a plate-like body in which fibrous wollastonite is mainly contained in gypsum, and 2 is a paperboard for gypsum board.
Claims (1)
ている石膏ボード用板紙２とからなる石膏ボード
に於いて、該芯材１中に繊維状ウオラストナイト
が含有されていることを特徴とする不燃性の石膏
ボード。 A gypsum board consisting of a core material 1 mainly made of gypsum and a gypsum board paperboard 2 adhesively covering the core material 1, characterized in that the core material 1 contains fibrous wollastonite. noncombustible plasterboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5352483U JPS59157816U (en) | 1983-04-11 | 1983-04-11 | plasterboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5352483U JPS59157816U (en) | 1983-04-11 | 1983-04-11 | plasterboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59157816U JPS59157816U (en) | 1984-10-23 |
| JPS63436Y2 true JPS63436Y2 (en) | 1988-01-07 |
Family
ID=30183868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5352483U Granted JPS59157816U (en) | 1983-04-11 | 1983-04-11 | plasterboard |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59157816U (en) |
-
1983
- 1983-04-11 JP JP5352483U patent/JPS59157816U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59157816U (en) | 1984-10-23 |
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