JPH0674181B2 - Method for producing lightweight inorganic plate-like body - Google Patents
Method for producing lightweight inorganic plate-like bodyInfo
- Publication number
- JPH0674181B2 JPH0674181B2 JP59187030A JP18703084A JPH0674181B2 JP H0674181 B2 JPH0674181 B2 JP H0674181B2 JP 59187030 A JP59187030 A JP 59187030A JP 18703084 A JP18703084 A JP 18703084A JP H0674181 B2 JPH0674181 B2 JP H0674181B2
- Authority
- JP
- Japan
- Prior art keywords
- inorganic plate
- producing
- lightweight inorganic
- lightweight
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 229920001131 Pulp (paper) Polymers 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 14
- 239000010425 asbestos Substances 0.000 claims description 9
- 229910052895 riebeckite Inorganic materials 0.000 claims description 9
- 238000010009 beating Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 239000012783 reinforcing fiber Substances 0.000 claims description 6
- 229910021487 silica fume Inorganic materials 0.000 claims description 6
- 239000011396 hydraulic cement Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 229910001562 pearlite Inorganic materials 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000012763 reinforcing filler Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 11
- 239000000047 product Substances 0.000 description 11
- 239000000123 paper Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010451 perlite Substances 0.000 description 4
- 235000019362 perlite Nutrition 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 238000001723 curing Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 239000012209 synthetic fiber Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229920002978 Vinylon Polymers 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229940034610 toothpaste Drugs 0.000 description 1
- 239000000606 toothpaste Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Description
【発明の詳細な説明】 〔技術分野〕 本発明は水硬性セメントをバインダーとする軽量無機質
板状体の製造方法に関するものであり、主に建築用内、
外壁材を提供する技術に関する。Description: TECHNICAL FIELD The present invention relates to a method for producing a lightweight inorganic plate-like body using a hydraulic cement as a binder, and is mainly used in construction,
The present invention relates to a technique for providing an outer wall material.
従来から水硬性セメントをバインダーとする板状体とし
てアスベストを含有したものが知られている。従来にお
いてアスベストを含有させたのは板状体の補強の役目
と、スラリーから抄造する際の抄造性能の向上の役目の
ためアスベストを含有させていた。ところがアスベスト
は公害を発生するのでアスベストを含まないセメント系
の板状体のハチエック抄造機による製造方法が従来から
検討されている。すなわちアスベストに代わる補強繊維
としては、木質パルプやビニロン、ポリプロピレン等の
如き合成繊維及び針状をした無機物等が用いられてお
り、これらを組合せてようやく物性を確保しているのが
現状である。従つて、得られた製品は初期には従来のア
スベスト含有品と比べて大差ないが、屋外等で長期間使
用していくにつれ、寸法収縮が増大し、周辺部にクラツ
クが発生するものが多い。一方、上記アスベストを含有
しないセメント系の板状体は、前述したアスベスト以外
の高価格の繊維を使用せざるを得ない為、使用量も少な
くして、高強度が発現し得るように比較的、高比重（1.
5以上）で厚みの薄い製品が多い。従つて表面テクスチ
ユアーも必然的にシンプルにならざるを得ないという欠
点があつた。BACKGROUND ART Conventionally, a plate-shaped body containing hydraulic cement as a binder and containing asbestos is known. In the past, asbestos was contained for the purpose of reinforcing the plate-like body and improving the paper-making performance when making paper from the slurry. However, since asbestos causes pollution, a method of manufacturing a cement-based plate-like body containing no asbestos by a Hachiek papermaking machine has been conventionally studied. That is, synthetic fibers such as wood pulp, vinylon and polypropylene, and needle-like inorganic substances are used as reinforcing fibers in place of asbestos, and the physical properties are finally secured by combining these. Therefore, the obtained products are not so different from the conventional products containing asbestos in the initial stage, but as they are used outdoors for a long time, the dimensional shrinkage increases and cracks often occur on the periphery. . On the other hand, the cement-based plate-like body containing no asbestos has to use high-priced fibers other than the above-mentioned asbestos, so the amount used is small and relatively high strength can be expressed. , High specific gravity (1.
5 or more) and many products are thin. Therefore, the surface texture is inevitably simple.
本発明は上記の点に鑑み成されたものであつて、軽量で
凹凸模様がつけ易く、しかも長期使用しても寸法安定性
の優れた軽量無機質板状体の製造方法を提供することを
目的としている。The present invention has been made in view of the above points, and an object thereof is to provide a method for producing a lightweight inorganic plate-like body which is lightweight and is easy to form an uneven pattern, and has excellent dimensional stability even when used for a long period of time. I am trying.
本発明の軽量無機質板状体の製造方法は、カナダ標準ろ
水度［CSF］で木質パルプのろ水度を測定したときその
値が100〜200ccの範囲になるように叩解した木質パルプ
を全固形分重量パーセントで２〜６％含有せしめ、且
つ、平均粒径が200μ以下の人工軽量中空状骨材を全固
形分重量で10〜40パーセント含有せしめ、その他、水硬
性セメント、補強繊維及びフイラーを含有したものを抄
造してグリーンシートを得、このグリーンシートの表面
にプレスを施して凹凸模様を形成して成るものであつ
て、このような構成を採用することで、上記した本発明
の目的を達成することができたものである。The method for producing a light-weight inorganic plate-like body of the present invention is a method of measuring the freeness of wood pulp according to Canadian standard freeness [CSF] so that the value is 100 to 200 cc. 2 to 6% by weight of solid content and 10 to 40% by weight of total solid content of artificial lightweight hollow aggregate having an average particle size of 200μ or less, other hydraulic cement, reinforcing fiber and filler A green sheet is obtained by making a paper containing the above, and the surface of the green sheet is pressed to form an uneven pattern, and by adopting such a configuration, the above-mentioned invention I was able to achieve the purpose.
以下本発明を実施例により詳述する。本発明で用いる木
質パルプは、NUKP、NBKP、NUSP、NBSP、あるいはTMP等
の木質パルプを叩解機によりカナダ標準ろ水度［CSF］
で木質パルプのろ水度を測定したときその値が100〜200
ccの範囲になるように叩解したものであつて、全固形重
量で２〜６％含有せしめるものである。すなわち本発明
で使用する木質パルプは、木質繊維から成るパルプであ
れば良く、パルプ化に際しての処理法は特に限定するも
のではないが、バインダーが水硬性セメントであるた
め、好ましくはリグニン、ヘミセルロース残存量の比較
的少ないクラフト処理パルプが有効である。一方、リン
ターパルプ、綿花、麻等も考えられるが、価格と叩解後
の繊維強度の点では不適である。また本発明に使用する
木質パルプはきよう雑物が少なければ、ダンボールや、
新聞、雑誌等の再生故紙も使用可能である。木質パルプ
を叩解する手段としてはシングルデイスクリフアイナ
ー、ダブルデイスクリフアイナー、ストーンリフアイナ
ー等が好ましいが、特に限定すべきものではない。ここ
で本発明で使用する木質パルプの叩解の目的は、パルプ
繊維を使用するフイブリル（fibril）化することにより
繊維の表面積を上げセメント等、粒状物の捕獲能力を上
げると同時に、パーライト等の中空状軽量骨材がスラリ
ー中で分離するのを抑える作用を持たせる為である。カ
ナダ標準ろ水度でパルプのろ水度を測定したときその値
が200ccより大きくてパルプの叩解度が低いと（すなわ
ちパルプの叩解が不充分であれば）パルプが有するセメ
ント等の凝集能力が低下し、抄造時に白水（シリンダー
バツト排水）濃度が上昇し材料の歩留まりが著しく低下
することになる。一方、叩解しすぎると（カナダ標準ろ
水度でパルプのろ水度を測定したときその値が100cc以
下になると）、スラリーのろ過抵抗が大きすぎて、抄造
スピードが遅くなつて生産効率が低下するのである。し
たがつて本発明においてはカナダ標準ろ水度［CSF］で
木質パルプのろ水度を測定したときその値が100〜200cc
の範囲になるように叩解した木質パルプを用いるのであ
る。Hereinafter, the present invention will be described in detail with reference to Examples. The wood pulp used in the present invention is NUKP, NBKP, NUSP, NBSP, or TMP wood pulp by a beating machine with Canadian standard freeness [CSF].
When the freeness of wood pulp is measured with, the value is 100-200
It was beaten to a range of cc and contained 2 to 6% by total solid weight. That is, the wood pulp used in the present invention may be a pulp composed of wood fibers, the treatment method at the time of pulping is not particularly limited, since the binder is hydraulic cement, preferably lignin, hemicellulose residual A relatively small amount of kraft pulp is effective. On the other hand, linter pulp, cotton, hemp, etc. are also conceivable, but they are not suitable in terms of price and fiber strength after beating. Also, if the wood pulp toothpaste used in the present invention is small, cardboard,
Recycled waste paper such as newspapers and magazines can also be used. As a means for beating the wood pulp, a single disc cliff eyer, a double disc cliff eyer, a stone refiner, etc. are preferable, but not limited thereto. Here, the purpose of beating of the wood pulp used in the present invention is to increase the surface area of fibers by making pulp fibers using fibrils to increase the ability to capture particulate matters such as cement, and at the same time to make hollow fibers such as pearlite. This is because the lightweight aggregate has a function of suppressing separation in the slurry. When the freeness of pulp is measured with Canadian standard freeness and the value is larger than 200cc and the beating degree of the pulp is low (that is, if the beating of the pulp is insufficient), the aggregating ability of the cement etc. of the pulp is The concentration of white water (cylinder but drainage) increases during papermaking, resulting in a significant decrease in material yield. On the other hand, if it is beaten too much (if the freeness of the pulp is 100 cc or less when measured with the Canadian standard freeness), the filtration resistance of the slurry is too high, and the papermaking speed becomes slow and the production efficiency decreases. To do. Therefore, in the present invention, when the freeness of wood pulp is measured by the Canadian standard freeness [CSF], the value is 100 to 200 cc.
Wood pulp that is beaten to be in the range of is used.
次に本発明で使用する中空状の人工軽量骨材について説
明する。人工軽量骨材として最も一般的にはパーライト
が好ましい。パーライトの他、シラスバルーン、フライ
アツシユバルーンあるいはガラス、ビーズ等も使用可能
であるが平均粒径は200μ以下が好ましい。通常市販さ
れているパーライトは、粒度分布が広く平均粒径で限定
するのは困難であるが、200μよりも大きいと通常は発
泡倍率も大きく、それだけ粒子比重が小さくなる傾向に
あり、スラリー中では表面に浮いて分離するトラブルを
生じ易い。スラリー中で分離しにくく且つ硬化体中で高
強度を発現し易いものとしてはより好ましくは平均粒径
50〜100μのものである。一方パーライト以外の例えば
シラスバルーンやフライアツシユバルーンあるいはガラ
ス質中空球状物も使用可能である。使用量は10〜40％が
好ましく10％より少ない場合には軽量化が不充分だけで
なく寸法安定性の良好なものが得られない。一方40％を
越えると軽量骨材が占める割合が大きく硬化体表面がも
ろく、塗膜密着性に不都合が生じることがある。Next, the hollow artificial lightweight aggregate used in the present invention will be described. Most commonly, perlite is preferred as the artificial lightweight aggregate. In addition to perlite, shirasu balloon, fly-ash balloon, glass, beads and the like can be used, but the average particle size is preferably 200 μm or less. Usually commercially available perlite has a wide particle size distribution and it is difficult to limit it by the average particle size, but if it is larger than 200 μ, the expansion ratio is usually large, and the particle specific gravity tends to be small accordingly. Trouble that floats on the surface and separates easily. It is more preferable that the average particle diameter is as a material that is difficult to separate in the slurry and that easily exhibits high strength in the cured body.
It is from 50 to 100μ. On the other hand, other than pearlite, for example, Shirasu balloon, fly Ash balloon or glassy hollow sphere can be used. The amount used is preferably 10 to 40%, and if it is less than 10%, not only is weight reduction insufficient, but also good dimensional stability cannot be obtained. On the other hand, if it exceeds 40%, the proportion of the lightweight aggregate is large and the surface of the cured body is fragile, which may cause inconvenience in the adhesion of the coating film.
次に前記以外の組成物として用いる合成繊維について説
明する。通常本発明の効果を得る為にはポリビニルアル
コール（PVA）系繊維の他にポリエチレン、アクリル系
繊維等が用いられる、繊維長及び径については製品の目
的により異なる為、特に限定すべきではないが、抄造時
の作業性、グリーンシートの切断性を考慮すると5mm〜1
0mm程度が最も効果的である。径についても同様な理由
により10μ〜100μ程度が好ましい。上述の如く本発明
の効果を得る為には特に合成繊維の種類は限定しない
が、特に製品強度に重点を置く場合にはポリビニルアル
コール系繊維が最も効果を発揮する。また抄造機で抄造
する場合に濃度との関係にも依存するが、メーキングロ
ールにて複数層巻き取る場合に層間剥離を生ずる場合が
あり、この場合の手段としてフエロシリコン製造時の副
産物であるシリカヒユームを併用するのが最も効果的で
ある。シリカヒユームを併用することにより、グリーン
シートの層間剥離を減少化させ、同時に硬化後の製品の
強度向上の効果も有する。シリカヒユームの使用量は特
に限定しないが通常、全固形分重量あたり５〜15％の使
用が好ましい。15％よりも多いと生成したケーキの過
抵抗が増大し、生産効率が低下する欠点を有する。一方
５％より少ない場合には抄き取つたグリーンシートの層
間剥離がし易くなり、一方、製品の強度向上も顕著な効
果が発現しにくくなる欠点がある。Next, synthetic fibers used as a composition other than the above will be described. Usually, in order to obtain the effects of the present invention, polyethylene, acrylic fibers, etc. are used in addition to polyvinyl alcohol (PVA) fibers. The fiber length and diameter differ depending on the purpose of the product, but are not particularly limited. , 5 mm to 1 considering workability during papermaking and cutability of green sheet
0mm is the most effective. The diameter is preferably about 10 μ to 100 μ for the same reason. As described above, the type of the synthetic fiber is not particularly limited in order to obtain the effect of the present invention, but the polyvinyl alcohol fiber is most effective when the product strength is particularly emphasized. Also, depending on the relationship with the concentration when making paper with a paper making machine, delamination may occur when winding multiple layers with a making roll, and as a means in this case, it is a by-product at the time of manufacturing ferrosilicon. It is most effective to use silica fume together. By using silica fume together, delamination of the green sheet can be reduced, and at the same time, the strength of the product after curing can be improved. The amount of silica fume used is not particularly limited, but it is usually preferable to use 5 to 15% based on the total solid content weight. If it exceeds 15%, the resulting cake will have an excessive resistance, resulting in a decrease in production efficiency. On the other hand, if it is less than 5%, the green sheet taken out is liable to be peeled off between layers, and on the other hand, the strength of the product is not likely to exhibit a remarkable effect.
以上説明した材料を、ハチエツク抄造機にて抄造するの
であるが、材料の歩留まり向上、生産スピードの向上
等、さらに効率的に生産する為には請求範囲第４項に示
した如く、スラリー過係数;KがＫ≦5cm4/secの範囲に
入るスラリーを用いて抄造することが望ましい。ここで
過係数は下記の如く定義される。すなわち過係数:K
とは、上記濃度のスラリーを実際に使用するハチエツク
抄造機のシーブシリンダー金網と同一の目開き（通常は
50〜60メツシユ）の金網を設置した容器内に、0.5〜1.0
投入し、直ちに液量;v〔cm3〕と、過時間；θ〔s
ec〕を、ｖが100cm3に至るまで測定し、得られる過曲
線;v（θ）から（dv/dθ）を算出し、グラフの縦軸に
（ｄθ/dv）を、横軸にｖをとつた時得られる近似直
線； 〔αは定数〕のｖ＜50cm3までの勾配の平均値；（2/
K′）から算出したＫ′を金網の有効面積;S〔cm3〕で除
した値をＫとする。最も効率良く抄造する場合には、ス
ラリーの過時の抵抗値、過直後のケーキの脱水性及
び過時の白水の濃度等を抄造材に適合した条件に設定
する必要があるが、この為に通常は高分子凝集剤をスラ
リー中に添加するのが望ましい。この時、上述の効率良
い抄造をする為には、本発明者らは、鋭意検討の結果、
過係数;KがＫ≦5cm4/secにすることが望ましいことが
わかつた。過係数;Kは、概して過のし易さを示すフ
アクターであり、例えば、水性が良すぎてシリンダー
バツト内のレベルが確保できない場合にはＫは5cm4/sec
より大きい値になつており、この場合にはスラリー濃度
のアツプ、又は高分子凝集剤の減量を行なつてＫを小さ
くする必要がある。The materials described above are made by a Hachiekku paper making machine. In order to produce the materials more efficiently by improving the yield of the materials, the production speed, etc., the slurry excess coefficient is set as shown in claim 4. It is desirable to carry out papermaking using a slurry in which K falls within the range of K ≦ 5 cm 4 / sec. Here, the over coefficient is defined as follows. I.e. overfactor: K
Is the same opening as the sheave cylinder wire net of the Hachiekku paper making machine that actually uses the slurry of the above concentration (usually
0.5 to 1.0 in a container equipped with a wire mesh of 50 to 60 mesh.
Immediately after the addition, the liquid volume; v [cm 3 ] and over time; θ [s
ec] is measured until v reaches 100 cm 3 , and (dv / dθ) is calculated from the obtained overcurve; v (θ), and the vertical axis of the graph is (dθ / dv) and the horizontal axis is v. An approximate straight line obtained when Average value of gradient of [α is a constant] up to v <50 cm 3 ; (2 /
The value obtained by dividing K ′ calculated from K ′) by the effective area of the wire mesh; S [cm 3 ] is defined as K. For the most efficient papermaking, it is necessary to set the resistance value of the slurry at the time of passing, the dehydration property of the cake immediately after passing, the concentration of white water at the time of passing, etc. to the conditions suitable for the papermaking material, but for this reason, it is usually It is desirable to add a polymeric flocculant into the slurry. At this time, in order to carry out the above-mentioned efficient papermaking, the present inventors have conducted extensive studies,
It has been found that it is desirable that the excess coefficient; K be K ≦ 5 cm 4 / sec. Excess coefficient; K is a factor that generally indicates that it is easy to pass, for example, if the water level is too good to secure the level in the cylinder but K is 5 cm 4 / sec.
The value becomes larger, and in this case, it is necessary to reduce the K by increasing the slurry concentration or reducing the amount of the polymer coagulant.
以上説明した如きスラリーを用いて抄造し、これをメー
キングロールにて所望の板厚に至るまで巻きとつたもの
をプレスにより脱水及び表裏面の模様を必要とあらば付
け、適宜養生硬化することにより軽量無材質板状体を得
ることが出来る。Papermaking using the slurry as described above, by winding it with a making roll to a desired plate thickness, dewatering it with a press and applying a pattern on the front and back if necessary, by curing and curing as appropriate. It is possible to obtain a lightweight non-material plate-shaped body.
無材質板状体をハチエツク抄造機にて抄造した場合、メ
ーキングロールに巻き取つた直後のグリーンシートは軽
量骨材を含有する為に、比較的嵩高いものが得られ、こ
れをプレスすることにより、深い凹凸模様の製品を得る
ことが出来るのである。この場合、加圧時に含有する軽
量骨材の一部が破壊される為、深い模様を付することが
可能となると同時に木質パルプが充分叩解されていてフ
イブリル化しており、軽量骨材が破壊されてもその周辺
で補強繊維量が多いため、強度の低下を抑える為に高強
度及び寸法安定性が得られるのではないかと考えられ
る。When a non-material plate-like body is made by a Hachietuku paper making machine, the green sheet immediately after being wound on a making roll contains a lightweight aggregate, so that a relatively bulky product is obtained, and by pressing this Therefore, it is possible to obtain a product having a deep uneven pattern. In this case, since a part of the lightweight aggregate contained during the pressurization is destroyed, it is possible to add a deep pattern, and at the same time, the wood pulp is sufficiently beaten and fibrillated, and the lightweight aggregate is destroyed. However, it is considered that high strength and dimensional stability can be obtained in order to suppress the decrease in strength because the amount of reinforcing fibers is large around it.
本発明に基く実施例と比較例とを下記の表に示す。使用
した材料は以下に示すとおりである。Examples and comparative examples based on the present invention are shown in the table below. The materials used are as shown below.
木質パルプ NUKP〔南信パルプ（株）製〕 ビニロン RK1502×８〔クラレ（株）製〕 ポリプロピレン PZT×10〔大和紡績（株）製〕 （以下ポリプロと称する） パーライト １型Ｆ〔宇部興産（株）製〕 ミクロシリカ シリカヒユーム〔宇部興産（株）製〕 フライアツシユ 〔関電化工（株）製〕 ガロライト 白石工業（株）のフライアツシユバルン 抄造は３シリンダーハチエツク抄造機にて製造し、グリ
ーンシートを直ちに模様型で加圧成形したものを80℃、
３日間の湿熱養生を実施した。硬化体の各物性は養生後
のサンプルを10日間室内にて風乾したものを測定に供し
た。尚、物性のうち寸法安定性はサンプルを105℃、24
時間乾燥した寸法を基準に、これを水中に２日間浸漬し
た後の寸法の伸び率（％）で示した。また、不燃性につ
いては建設省告示1828号に基づく方法にて実施し、不合
格品は基材試験における温度上昇が50℃以上となつたこ
とに基づくものである。Wood pulp NUKP [Manufactured by Nanshin Pulp Co., Ltd.] Vinylon RK1502 x 8 [Manufactured by Kuraray Co., Ltd.] Polypropylene PZT x 10 [Manufactured by Daiwa Spinning Co., Ltd.] (hereinafter referred to as Polypro) Perlite Type 1 F [Ube Industries Co., Ltd. )] Microsilica Silica HYUM [manufactured by Ube Industries, Ltd.] Fly Atsushiyu [manufactured by Kanden Kako Co., Ltd.] Galois Shiraishi Kogyo Co., Ltd. Fly Atsushi Barun Papermaking was made on a 3-cylinder Hachietuku papermaking machine, and green sheets were immediately produced. 80 ° C of pressure-molded pattern
Wet heat curing was carried out for 3 days. The physical properties of the cured product were measured by air-drying the cured sample in a room for 10 days. Among the physical properties, the dimensional stability of the sample is 105 ℃, 24
Based on the time-dried size, this was expressed as the elongation percentage (%) of the size after being immersed in water for 2 days. Regarding non-combustibility, the method based on the Ministry of Construction Notification 1828 was used, and the rejected products are based on the temperature rise of 50 ° C or more in the base material test.
〔発明の効果〕 本発明にあつては、叙述のように構成したので、軽量高
強度であり、且つ寸法安定性に優れ、深い凹凸模様のあ
る意匠性に富んだ無機質板状体を得ることができたもの
である。 [Effects of the Invention] In the present invention, since it is configured as described above, it is lightweight and has high strength, and also has excellent dimensional stability, and to obtain an inorganic plate-like body rich in design with deep unevenness pattern. Was created.
フロントページの続き (72)発明者 石木 茂 大阪府門真市大字門真1048番地 松下電工 株式会社内 (72)発明者 瀧華 裕之 大阪府門真市大字門真1048番地 松下電工 株式会社内 (56)参考文献 特開 昭55−51755（ＪＰ，Ａ) 特開 昭56−63099（ＪＰ，Ａ)Front page continued (72) Inventor Shigeru Ishiki 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Hiroyuki Takika 1048, Kadoma, Kadoma City, Osaka Matsushita Electric Works, Ltd. (56) Reference References JP 55-51755 (JP, A) JP 56-63099 (JP, A)
Claims (5)
ろ水度を測定したときその値が100〜200ccの範囲になる
ように叩解した木質パルプを全固形分重量パーセントで
２〜６％含有せしめ、且つ、平均粒径が200μ以下の人
工軽量中空状骨材を全固形分重量で10〜40パーセント含
有せしめ、その他、水硬性セメント、補強繊維及びフィ
ラーを含有したものを抄造してグリーンシートを得、こ
のグリーンシートの表面にプレスを施して凹凸模様を形
成して成る軽量無機質板状体の製造方法。1. When the freeness of wood pulp is measured by the Canadian Standard Freeness [CSF], the beating wood pulp is beaten so that the value is in the range of 100 to 200 cc. %, And an average particle size of 200μ or less artificial light weight hollow aggregate containing 10 to 40% by weight of the total solid content, in addition, hydraulic cement, paper containing those containing reinforcing fibers and filler A method for producing a lightweight inorganic plate-like body, comprising obtaining a green sheet and pressing the surface of the green sheet to form an uneven pattern.
とを特徴とする特許請求の範囲第１項記載の軽量無機質
板状体の製造方法。2. The method for producing a lightweight inorganic plate-like body according to claim 1, wherein the artificial lightweight hollow aggregate is pearlite.
であり、且つ、フィラーがフエロシリコン製造時の副産
物である平均粒径が１μｍ以下のシリカヒュームである
ことを特徴とする特許請求の範囲第１項又は第２項記載
の軽量無機質板状体の製造方法。3. The reinforcing fiber is a polyvinyl alcohol fiber, and the filler is silica fume having an average particle size of 1 μm or less, which is a by-product during the production of ferrososilicon. The method for producing a lightweight inorganic plate-like body according to item 1 or 2.
量、スラリー濃度、高分子凝集剤量等を調整することに
より、抄造時のスラリー濾過係数;KがＫ≦5cm4/secの範
囲に入るスラリーを用いてハチエック抄造機により抄造
されたものであることを特徴とする特許請求の範囲第１
項記載の軽量無機質板状体の製造方法。4. The slurry filtration coefficient during papermaking; K falls within the range of K ≦ 5 cm 4 / sec by adjusting the beating degree of pulp, the content of silica fume, the slurry concentration, the amount of polymer flocculant, and the like. Claim 1 characterized in that it is made by a Hachiek paper making machine using a slurry.
A method for producing a lightweight inorganic plate-like body as described in the item.
ことを特徴とする特許請求の範囲第１項記載の軽量無機
質板状体の製造方法。5. The method for producing a lightweight inorganic plate-like body according to claim 1, wherein the reinforcing fiber is asbestos of 5 wt% or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59187030A JPH0674181B2 (en) | 1984-09-06 | 1984-09-06 | Method for producing lightweight inorganic plate-like body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59187030A JPH0674181B2 (en) | 1984-09-06 | 1984-09-06 | Method for producing lightweight inorganic plate-like body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6168378A JPS6168378A (en) | 1986-04-08 |
| JPH0674181B2 true JPH0674181B2 (en) | 1994-09-21 |
Family
ID=16198959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59187030A Expired - Lifetime JPH0674181B2 (en) | 1984-09-06 | 1984-09-06 | Method for producing lightweight inorganic plate-like body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0674181B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63215577A (en) * | 1987-03-04 | 1988-09-08 | ニチハ株式会社 | Lightweight foamed concrete |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5233729Y2 (en) * | 1972-10-11 | 1977-08-01 | ||
| JPS5551755A (en) * | 1978-10-07 | 1980-04-15 | Nisshin Eng | Manufacture of nailldown construction board |
| JPS5663099A (en) * | 1979-10-22 | 1981-05-29 | Nittetsu Mining Co Ltd | Production of ceramic sheet |
| JPS611836Y2 (en) * | 1980-12-23 | 1986-01-21 |
-
1984
- 1984-09-06 JP JP59187030A patent/JPH0674181B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6168378A (en) | 1986-04-08 |
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