JP2008081327A - Inorganic molded product - Google Patents

Inorganic molded product Download PDF

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JP2008081327A
JP2008081327A JP2006260329A JP2006260329A JP2008081327A JP 2008081327 A JP2008081327 A JP 2008081327A JP 2006260329 A JP2006260329 A JP 2006260329A JP 2006260329 A JP2006260329 A JP 2006260329A JP 2008081327 A JP2008081327 A JP 2008081327A
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inorganic
wood
mass
lightweight body
organic
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JP4950611B2 (en
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Fumihiro Asakura
文宏 朝倉
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Nichiha Corp
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Nichiha Corp
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/29—Frost-thaw resistance
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inorganic molded product which reduces the weight as a product by reducing specific gravity and is excellent in various physical properties such as freeze-thawing resistance. <P>SOLUTION: The inorganic molded product comprises a hydraulic inorganic material, a silicic acid-containing material, a woody reinforcing material, an inorganic lightweight product, and an organic lightweight product. The woody reinforcing material is wood flour and woody fibers; the inorganic lightweight product is a fired foam; and the organic lightweight product is a resin foam. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、セメントなどの水硬性無機質材料とケイ酸質含有材料と木質補強材とを主成分とする無機質成形体に関するものである。   The present invention relates to an inorganic molded body mainly composed of a hydraulic inorganic material such as cement, a siliceous material, and a wood reinforcing material.

従来から木片などの木質補強材とセメント等の水硬性無機質材料とを主原料として、型板の上に混合した原料を散布し圧締する、いわゆる乾式、半乾式製法による木片セメント板の製造方法がある。
これらの木片セメント板は、型板に予め凹凸を施しておくことで、製品に凹凸が転写されるので、非常に見栄えのよい木片セメント板となる。
しかしながら、原料を散布した後に、かなり圧締しないと表面意匠性が悪くなり、シャープな表面柄が表現できないので、どうしても製品の比重が高くなり、製品としての重量も重くなる傾向にあった。
そのため、いろいろと軽量化が検討されているが、まだまだ顕著な改善には至っていないのが、現状である。
特許第２９３１７６８号公報 特許第３３５２０６１号公報 特許第３４３４７５４号公報 Conventionally, a wood chip cement board manufacturing method using a so-called dry or semi-dry method, in which wood reinforcing materials such as wood chips and hydraulic inorganic materials such as cement are used as main raw materials, and the mixed raw material is sprayed and pressed. There is.
Since these wooden piece cement boards are uneven | corrugated to a product by giving an unevenness | corrugation to a template beforehand, it will become a very good-looking wood piece cement board.
However, after spraying the raw material, if the surface is not pressed considerably, the surface design is deteriorated and a sharp surface pattern cannot be expressed, so that the specific gravity of the product inevitably increases and the product weight tends to increase.
For this reason, various weight reductions are being considered, but the current situation is that no significant improvement has yet been achieved.
Japanese Patent No. 2931768 Japanese Patent No. 3352061 Japanese Patent No. 3434754

本発明は、比重を低くすることで、製品としての重量を軽量にしつつ、さらに耐凍結融解性能のような諸物性に優れた無機質成形体を提供せんとするものである。   The present invention aims to provide an inorganic molded body having excellent physical properties such as freeze-thaw resistance while reducing the specific gravity to reduce the weight as a product.

本請求項１に記載の無機質成形体は、水硬性無機質材料と、ケイ酸質含有材料と、木質補強材と、無機質軽量体と、有機質軽量体とからなることを特徴とする。   The inorganic molded body according to claim 1 is composed of a hydraulic inorganic material, a siliceous material, a wood reinforcing material, an inorganic lightweight body, and an organic lightweight body.

また、請求項２に記載の無機質成形体は、請求項１に記載の無機質成形体において、前記木質補強材は木粉及び木質ファイバーであり、前記無機質軽量体は焼成発泡体であり、前記有機質軽量体は樹脂発泡体であることを特徴とする。   The inorganic molded body according to claim 2 is the inorganic molded body according to claim 1, wherein the wooden reinforcing material is wood powder and wood fiber, the inorganic lightweight body is a fired foam, and the organic The lightweight body is a resin foam.

また、請求項３に記載の無機質成形体は、請求項１又は請求項２に記載の無機質成形体において、全固形分に対して、前記水硬性無機質材料は２５〜５０質量％であり、前記ケイ酸質含有材料は５〜５０質量％であり、前記木質補強材は６〜２５質量％であり、前記無機質軽量体は１５〜４４質量％であり、前記有機質軽量体は１〜５質量％であることを特徴とする。 Moreover, the inorganic molded body according to claim 3 is the inorganic molded body according to claim 1 or 2, wherein the hydraulic inorganic material is 25 to 50% by mass with respect to the total solid content, The siliceous material is 5 to 50% by mass, the wood reinforcing material is 6 to 25% by mass, the inorganic lightweight body is 15 to 44% by mass, and the organic lightweight body is 1 to 5% by mass. It is characterized by being.

また、請求項４に記載の無機質成形体は、請求項１〜３のいずれかに記載の無機質成形体において、前記木質補強材は木粉及び木質ファイバーであって、前記木粉は平均粒径０．５〜１．０ｍｍであり、前記木質ファイバーは平均繊維長５〜２０ｍｍかつ平均繊維長１．０ｍｍであり、前記無機質軽量体は平均粒径５０〜１００μｍであり、前記有機質軽量体は平均粒径３〜５ｍｍであることを特徴とする。 Moreover, the inorganic molded body according to claim 4 is the inorganic molded body according to any one of claims 1 to 3, wherein the wooden reinforcing material is wood powder and wood fiber, and the wood powder has an average particle diameter. 0.5 to 1.0 mm, the wood fiber has an average fiber length of 5 to 20 mm and an average fiber length of 1.0 mm, the inorganic lightweight body has an average particle size of 50 to 100 μm, and the organic lightweight body has an average The particle size is 3 to 5 mm.

本発明によれば、比重を低くすることで、製品としての重量を軽量にしつつ、さらに耐凍結融解性能のような諸物性に優れた無機質成形体を提供することができる。   According to the present invention, by reducing the specific gravity, it is possible to provide an inorganic molded body excellent in various physical properties such as freeze-thaw resistance while reducing the weight as a product.

以下、本発明を実施するための最良の形態を説明する。
本発明の無機質成形体は、水硬性無機質材料と、ケイ酸質含有材料と、木質補強材と、無機質軽量体と、有機質軽量体とからなる。 Hereinafter, the best mode for carrying out the present invention will be described.
The inorganic molded body of the present invention comprises a hydraulic inorganic material, a siliceous material, a wood reinforcing material, an inorganic lightweight body, and an organic lightweight body.

［水硬性無機質材料］
水硬性無機質材料とは、水と接触することで、水和反応が起こり、硬化が始まるもので、セメントや石灰等がある。
本発明に使用する水硬性無機質材料としては、ポルトランドセメント、シリカセメント、フライアッシュセメント、アルミナセメント等のセメントや、高炉スラグ、消石灰等があるが、ポルトランドセメント、特に普通ポルトランドセメントを使用することが好ましい。 [Hydraulic inorganic material]
A hydraulic inorganic material is one in which a hydration reaction occurs when it comes into contact with water and hardening begins, and includes cement and lime.
Examples of the hydraulic inorganic material used in the present invention include cements such as Portland cement, silica cement, fly ash cement, and alumina cement, blast furnace slag, slaked lime, etc., but Portland cement, particularly ordinary Portland cement may be used. preferable.

［ケイ酸質含有材料］
ケイ酸質含有材料とは、化学組成として、ケイ酸（ＳｉＯ２）を含有している材料で、ケイ砂や珪藻土等がある。
本発明に使用するケイ酸質含有材料としては、ケイ砂、珪石粉、珪藻土、シリカフューム、フライアッシュ、ボトムアッシュ、高炉スラグ、鋼鉄スラグ、シラスバルーン、パーライト等があるが、特にシリカフュームを使用することが好ましい。 [Silica-containing material]
The siliceous-containing material is a material containing silicic acid (SiO 2 ) as a chemical composition, and includes siliceous sand and diatomaceous earth.
Examples of the siliceous material used in the present invention include silica sand, silica powder, diatomaceous earth, silica fume, fly ash, bottom ash, blast furnace slag, steel slag, shirasu balloon, pearlite, etc. Is preferred.

［木質補強材］
木質補強材としては、木粉、木片、木毛、木繊維、パルプ、木質繊維束、木質ファイバー等があり、本発明に使用する木質補強材としては、木粉や木片、パルプ、木質繊維束、木質ファイバー等があるが、木粉と木質ファイバーとの組み合わせが好ましい。
さらに、木粉としては平均粒径が０．５〜１．０ｍｍであるものが好ましく、木質ファイバーとしては平均繊維長５〜２０ｍｍでかつ平均繊維径が１．０ｍｍの木質ファイバーが好ましい。
比較的短く、比較的細くて、柔らかい平均繊維長５〜２０ｍｍかつ平均繊維径が１．０ｍｍの木質ファイバーを使用することで、有機質軽量体がかなり大きめであっても、有機質軽量体の周りに木質ファイバーが上手く回り込み、その結果造形性に優れる。 [Wood reinforcement]
Examples of the wood reinforcing material include wood powder, wood pieces, wood hair, wood fiber, pulp, wood fiber bundle, wood fiber, etc. The wood reinforcement material used in the present invention includes wood powder, wood piece, pulp, wood fiber bundle. There are wood fibers and the like, but a combination of wood powder and wood fibers is preferable.
Further, the wood powder preferably has an average particle diameter of 0.5 to 1.0 mm, and the wood fiber is preferably a wood fiber having an average fiber length of 5 to 20 mm and an average fiber diameter of 1.0 mm.
By using wood fibers that are relatively short, relatively thin and have a soft average fiber length of 5 to 20 mm and an average fiber diameter of 1.0 mm, even if the organic lightweight body is quite large, The wood fiber goes around well, and as a result, it has excellent formability.

［無機質軽量体］
本発明に使用する無機質軽量体としては、パーライト、シラスバルーン、バーミキュライト等の無機焼成発泡体や、フライアッシュバルーンや製紙スラッジ焼却灰等の焼却灰などがあるが、焼成発泡体、特に、シラスバルーンが好ましい。
特に好ましいのは、平均粒径５０〜１００μｍのシラスバルーンである。
平均粒径が１００μｍよりも大き過ぎると成形体の表面性が悪くなり、５０μｍよりも細かすぎると軽量体として働かない。 [Inorganic lightweight body]
Examples of the inorganic lightweight body used in the present invention include inorganic fired foams such as perlite, shirasu balloon and vermiculite, and incineration ash such as fly ash balloon and papermaking sludge incineration ash. Is preferred.
Particularly preferred is a shirasu balloon having an average particle size of 50 to 100 μm.
If the average particle diameter is too large, the surface properties of the molded article will be poor, and if it is too fine, it will not work as a lightweight body.

［有機質軽量体］
本発明に使用する有機質軽量体として好ましいのは、樹脂発泡体であり、特に好ましいのは、スチレン樹脂発泡ビーズで、発泡倍率が５〜１０倍と少し固めで、発泡後の平均粒径が３〜５ｍｍとかなり大きめのものが好ましい。
平均粒径が５ｍｍよりも大きいと成形体の表面性が悪化し、３ｍｍよりも細かいと、顕著な軽量効果が得られない。 [Organic lightweight body]
The organic lightweight body used in the present invention is preferably a resin foam, particularly preferably a styrene resin foam bead, with a foaming ratio of 5 to 10 times, and an average particle diameter after foaming of 3 A considerably large one of ˜5 mm is preferable.
When the average particle diameter is larger than 5 mm, the surface property of the molded article is deteriorated. When the average particle diameter is smaller than 3 mm, a remarkable light weight effect cannot be obtained.

［その他］
これら主成分のほか、マイカやベントナイト等の鉱物物質、無機質成形体の粉砕物やリジェクト等のリターン原料、ミョウバンや水ガラス、アルミン酸塩等の少量の硬化促進剤や、ロウ、ワックス、パラフィン、界面活性剤、シリコン等の防水剤や撥水剤、ポリビニルアルコール等の合成樹脂成分、ポリプロピレン繊維などの有機繊維や、ワラストナイト等の無機繊維等が適宜混合されてもよい。 [Others]
In addition to these main components, mineral materials such as mica and bentonite, return raw materials such as crushed and rejected inorganic molded bodies, a small amount of hardening accelerators such as alum, water glass, aluminate, wax, wax, paraffin, A surfactant, a waterproofing agent such as silicon, a water repellent, a synthetic resin component such as polyvinyl alcohol, an organic fiber such as polypropylene fiber, an inorganic fiber such as wollastonite, and the like may be appropriately mixed.

［原料組成配合］
次に、本発明に係る無機質成形体の原料組成の配合について説明する。
本発明においては、全固形分に対して、軽量体は２０〜４５質量％であり、さらに前記軽量体に対して、前記有機質軽量体は０．０２〜０．２質量％である。
軽量体が２０質量％よりも少ないと、顕著な軽量効果が得られず、また、４５質量％よりも多いと、成形性に問題が生じる。
さらに、この軽量体に対して、有機軽量体が０．０２質量％より少ないと、軽量効果が得られないとともに、耐凍結融解性も劣化する。
また、０．２質量％よりも多いと、成形性に問題が生じる。
全固形分に対しては、無機質軽量体は１５〜４４質量％、有機質軽量体は１〜５質量％である。
水硬性無機質材料は２５〜５０質量％が好ましく、ケイ酸質含有材料は５〜５０質量％が好ましい。
また、木質補強材としては木粉が１〜２０質量％、木質ファイバーが５〜２０質量％が好ましく、全木質補強材としては、６〜２５質量％が好ましい。
木質ファイバーが５質量％よりも少ないと、軽量体周りへの、ファイバーの回り込みが少なくなってしまい、そのため、造形性が不良になってしまって、結果凍結融解性能が低下する。 [Raw material composition]
Next, the blending of the raw material composition of the inorganic molded body according to the present invention will be described.
In this invention, a lightweight body is 20-45 mass% with respect to the total solid, Furthermore, the said organic lightweight body is 0.02-0.2 mass% with respect to the said lightweight body.
If the lightweight body is less than 20% by mass, a remarkable light weight effect cannot be obtained, and if it is more than 45% by mass, there is a problem in moldability.
Further, when the organic lightweight body is less than 0.02% by mass with respect to this lightweight body, the light weight effect cannot be obtained and the freeze-thaw resistance is also deteriorated.
Moreover, when more than 0.2 mass%, a problem will arise in a moldability.
The inorganic lightweight body is 15 to 44% by mass and the organic lightweight body is 1 to 5% by mass with respect to the total solid content.
The hydraulic inorganic material is preferably 25 to 50% by mass, and the siliceous material is preferably 5 to 50% by mass.
The wood reinforcing material is preferably 1 to 20% by mass of wood powder and 5 to 20% by mass of wood fiber, and the total wooden reinforcing material is preferably 6 to 25% by mass.
When the amount of the wood fiber is less than 5% by mass, the wraparound of the fiber around the lightweight body is reduced, resulting in poor formability, resulting in a decrease in freeze-thaw performance.

［製造方法］
次に本発明に係る無機質成形体の製造方法について説明する。
まず、上記原料を適量の水と混合して原料混合物とする。
シリカフュームは粉体での添加よりも、水に溶かした状態での添加が作業上好ましい。
この原料混合物を型板上に散布してマットとし、このマットを圧縮プレスし、その後、約６０℃で８時間硬化養生（一次養生）が行われ、さらに、１６０〜１７０℃、７時間前後でオートクレーブ養生する。
プレスはスペーサーによる厚み管理で行った。
プレス圧力は、３〜５ＭPaであることが好ましい。
プレス圧力を３MPa以上とすることで、よりシャープな表面柄が表現できる。
さらにマットは、表裏層と芯層との３層構造とされてもよい。 [Production method]
Next, the manufacturing method of the inorganic molded object which concerns on this invention is demonstrated.
First, the raw material is mixed with an appropriate amount of water to obtain a raw material mixture.
Silica fume is preferably added in a dissolved state in water rather than in powder form.
This raw material mixture is sprayed on a template to form a mat, and the mat is compression-pressed. Thereafter, curing curing (primary curing) is performed at about 60 ° C. for 8 hours, and further at 160 to 170 ° C. for about 7 hours. Autoclave curing.
The press was performed by controlling the thickness with a spacer.
The pressing pressure is preferably 3 to 5 MPa.
By setting the press pressure to 3 MPa or more, a sharper surface pattern can be expressed.
Furthermore, the mat may have a three-layer structure of front and back layers and a core layer.

以下に本発明の実施例を挙げる。
表１に示す原料配合、製造条件にて、実施例１〜５、比較例１〜４を製造した。
無機質軽量体には、平均粒径７５μｍのシラスバルーンを使用した。
有機質軽量体には、平均粒径４ｍｍの発泡スチレンビーズを使用した。
比較例で使用した有機質軽量体は平均粒径１ｍｍの発泡スチレンビーズである。
防水剤として脂肪酸エステルを固形分換算で０．２５質量％、硬化剤には、ナトリウム明礬と水ガラスをそれぞれ固形分換算で１．７５質量％ずつ、全固形分に対して外添で添加した。
諸物性を表２に示す。
曲げ強度は、ＪＩＳ Ａ １４０８に準じ測定した。
厚み膨潤率は、オートクレーブ養生の前後の厚み測定による膨潤率である。
耐凍結融解性膨潤率は、耐凍結融解試験（ＪＩＳ Ａ １４３５ に基づく気中凍結水中融解法）６００サイクル後の厚み膨潤率である。
耐クラック性は、吸水４時間、炭酸化（ＣＯ２濃度５％）４時間、乾燥１００℃１５〜１６時間を１サイクルとし、１０サイクル後の目視判断でクラックなし→○、クラック少々→△、クラック多→×、とした。
寸法安定性は、吸水１５日後の吸水伸び変化で、問題なし→○、伸び発生→△、伸び大→×、とした。 Examples of the present invention will be given below.
Examples 1 to 5 and Comparative Examples 1 to 4 were produced under the raw material composition and production conditions shown in Table 1.
As the inorganic lightweight body, a shirasu balloon having an average particle diameter of 75 μm was used.
For the organic lightweight body, expanded styrene beads having an average particle diameter of 4 mm were used.
The organic lightweight body used in the comparative example is expanded styrene beads having an average particle diameter of 1 mm.
Fatty acid ester as a waterproofing agent is 0.25% by mass in terms of solid content, and sodium alum and water glass are added as hardeners by 1.75% by mass in terms of solid content by external addition to the total solid content. .
Various physical properties are shown in Table 2.
The bending strength was measured according to JIS A 1408.
The thickness swelling ratio is a swelling ratio measured by thickness measurement before and after the autoclave curing.
The freeze-thaw resistance swelling rate is the thickness swelling rate after 600 cycles of the freeze-thaw test (the method of thawing in air in frozen water based on JIS A 1435).
Crack resistance is 4 hours for water absorption, 4 hours for carbonation (CO2 concentration 5%), and 1 cycle of drying at 100 ° C. for 15 to 16 hours. No visual crack after 10 cycles → ○, a little crack → △, crack Many → x.
The dimensional stability was a change in water absorption elongation after 15 days of water absorption, with no problem → ○, elongation generation → Δ, and large elongation → ×.

表２によれば、実施例１〜５はすべて絶乾比重０．６５〜０．７２と、目標とした絶乾比重０．７０前後の非常に顕著な軽量化を得ることができ、しかも、絶乾比重が低いことで懸念される耐凍結融解性能も、問題のない値が得られた。
大径の発泡ビーズを用いず、小径の発泡ビーズ（平均粒径１ｍｍ、発泡倍率２０倍）を用いた比較例１は、強度が低めであり、耐凍結融解性能が悪い。
無機質軽量体を用いない比較例２は、プレス圧が上がらず、曲げ強度が低く、厚み膨潤率、耐凍結融解性に劣る。
発泡ビーズを用いない比較例３も、プレス圧が上がらず、耐凍結融解性能に劣る。
発泡ビーズを５質量％より多く使用した比較例４は、厚み膨潤率、耐凍結融解性能ともに劣り、さらに耐クラック性、寸法安定性も悪い。 According to Table 2, all of Examples 1 to 5 can obtain an extremely dry weight with an absolute dry specific gravity of 0.65 to 0.72 and a target absolute dry specific gravity of around 0.70, Freezing and thawing performance, which is a concern due to the low absolute specific gravity, was also satisfactory.
Comparative Example 1 using small diameter expanded beads (average particle diameter 1 mm, expansion ratio 20 times) without using large diameter expanded beads has low strength and poor freeze-thaw resistance.
Comparative Example 2 not using an inorganic lightweight body does not increase the press pressure, has low bending strength, and is inferior in thickness swelling rate and freeze-thaw resistance.
In Comparative Example 3 in which no expanded beads are used, the press pressure does not increase and the freeze-thaw resistance is poor.
Comparative Example 4 using more than 5% by mass of foamed beads is inferior in both the thickness swelling rate and freeze-thaw resistance, and also in poor crack resistance and dimensional stability.

Claims (4)

水硬性無機質材料と、ケイ酸質含有材料と、木質補強材と、無機質軽量体と、有機質軽量体とからなることを特徴とする無機質成形体。 An inorganic molded body comprising a hydraulic inorganic material, a siliceous material, a wood reinforcing material, an inorganic lightweight body, and an organic lightweight body. 前記木質補強材は木粉及び木質ファイバーであり、前記無機質軽量体は焼成発泡体であり、前記有機質軽量体は樹脂発泡体であることを特徴とする請求項１に記載の無機質成形体。 2. The inorganic molded body according to claim 1, wherein the wood reinforcing material is wood powder and wood fiber, the inorganic lightweight body is a fired foam, and the organic lightweight body is a resin foam. 全固形分に対して、前記水硬性無機質材料は２５〜５０質量％であり、前記ケイ酸質含有材料は５〜５０質量％であり、前記木質補強材は６〜２５質量％であり、前記無機質軽量体は１５〜４４質量％であり、前記有機質軽量体は１〜５質量％であることを特徴とする請求項１又は請求項２に記載の無機質成形体。 The hydraulic inorganic material is 25 to 50% by mass, the siliceous material is 5 to 50% by mass, the wood reinforcing material is 6 to 25% by mass, and the total solid content is 6 to 25% by mass. The inorganic lightweight body according to claim 1 or 2, wherein the inorganic lightweight body is 15 to 44% by mass, and the organic lightweight body is 1 to 5% by mass. 前記木質補強材は木粉及び木質ファイバーであって、前記木粉は平均粒径０．５〜１．０ｍｍであり、前記木質ファイバーは平均繊維長５〜２０ｍｍかつ平均繊維長１．０ｍｍであり、前記無機質軽量体は平均粒径５０〜１００μｍであり、前記有機質軽量体は平均粒径３〜５ｍｍであることを特徴とする請求項１〜３のいずれかに記載の無機質成形体。 The wood reinforcing material is wood powder and wood fiber, and the wood powder has an average particle size of 0.5 to 1.0 mm, and the wood fiber has an average fiber length of 5 to 20 mm and an average fiber length of 1.0 mm. The inorganic lightweight body according to any one of claims 1 to 3, wherein the inorganic lightweight body has an average particle diameter of 50 to 100 µm, and the organic lightweight body has an average particle diameter of 3 to 5 mm.
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JPH0489341A (en) * 1990-07-31 1992-03-23 Sekisui Chem Co Ltd Cement composition to be extrusion-molded
JPH0632643A (en) * 1992-07-16 1994-02-08 Sekisui Chem Co Ltd Hydraulic inorganic composition
JPH09328350A (en) * 1996-05-31 1997-12-22 Nichiha Corp Backing material for roof and its production
JP2931768B2 (en) * 1994-12-22 1999-08-09 ニチハ株式会社 Method for producing inorganic molded plate
JPH11310480A (en) * 1998-04-27 1999-11-09 Nichiha Corp Lightweight inorganic plate
JP2002187759A (en) * 2000-12-21 2002-07-05 Nichiha Corp Production process for cemented wood board
JP2002321305A (en) * 2001-04-23 2002-11-05 Sekisui Chem Co Ltd Cemented chip laminated board
JP2003137633A (en) * 2001-10-29 2003-05-14 Sekisui Chem Co Ltd Wood chip cement board
JP2005343740A (en) * 2004-06-03 2005-12-15 Nichiha Corp Manufacturing process of wood cement board

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0489341A (en) * 1990-07-31 1992-03-23 Sekisui Chem Co Ltd Cement composition to be extrusion-molded
JPH0632643A (en) * 1992-07-16 1994-02-08 Sekisui Chem Co Ltd Hydraulic inorganic composition
JP2931768B2 (en) * 1994-12-22 1999-08-09 ニチハ株式会社 Method for producing inorganic molded plate
JPH09328350A (en) * 1996-05-31 1997-12-22 Nichiha Corp Backing material for roof and its production
JPH11310480A (en) * 1998-04-27 1999-11-09 Nichiha Corp Lightweight inorganic plate
JP2002187759A (en) * 2000-12-21 2002-07-05 Nichiha Corp Production process for cemented wood board
JP2002321305A (en) * 2001-04-23 2002-11-05 Sekisui Chem Co Ltd Cemented chip laminated board
JP2003137633A (en) * 2001-10-29 2003-05-14 Sekisui Chem Co Ltd Wood chip cement board
JP2005343740A (en) * 2004-06-03 2005-12-15 Nichiha Corp Manufacturing process of wood cement board

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