JPH0532449A - Calcium silicate molded product and its production - Google Patents
Calcium silicate molded product and its productionInfo
- Publication number
- JPH0532449A JPH0532449A JP18758791A JP18758791A JPH0532449A JP H0532449 A JPH0532449 A JP H0532449A JP 18758791 A JP18758791 A JP 18758791A JP 18758791 A JP18758791 A JP 18758791A JP H0532449 A JPH0532449 A JP H0532449A
- Authority
- JP
- Japan
- Prior art keywords
- calcium silicate
- fibrous
- potassium titanate
- raw material
- molded product
- 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
Classifications
-
- 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
- C04B28/18—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 mixtures of the silica-lime type
- C04B28/186—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 mixtures of the silica-lime type containing formed Ca-silicates before the final hardening step
Landscapes
- 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)
- Inorganic Compounds Of Heavy Metals (AREA)
- Producing Shaped Articles From Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は断熱性の優れた軽量の珪
酸カルシウム成形体及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightweight calcium silicate compact having excellent heat insulating properties and a method for producing the same.
【０００２】[0002]
【従来の技術】珪酸カルシウム成形体は、珪酸質原料と
石灰質原料を反応させて珪酸カルシウム水和物を生成
し、且つ成形体としたものであり、軽量で断熱性に優れ
たものとして各種分野での応用が検討されている。2. Description of the Related Art Calcium silicate compacts are formed by reacting a siliceous raw material with a calcareous raw material to produce calcium silicate hydrate, and are compacts, which are lightweight and have excellent heat insulating properties in various fields. Is being considered for application.
【０００３】[0003]
【発明が解決しようとする課題】前述した珪酸カルシウ
ム成形体の一般的性質として、成形体の軽量化を図ると
強度が低下すると共に、低比重化に伴い高温での断熱性
が低下するという問題が生じる。As a general property of the above-mentioned calcium silicate compact, there is a problem that when the weight of the compact is reduced, the strength is lowered and the heat insulating property at high temperature is lowered due to the low specific gravity. Occurs.
【０００４】一方、珪酸カルシウム成形体の断熱性を向
上させるために輻射エネルギーを散乱等する無機不活性
物質を添加することが研究されているが、無機不活性物
質の添加により強度が低下するという問題がある。On the other hand, it has been studied to add an inorganic inactive substance that scatters radiant energy in order to improve the heat insulating property of the calcium silicate compact, but the addition of the inorganic inactive substance decreases the strength. There's a problem.
【０００５】したがって、従来、軽量で断熱性の優れた
珪酸カルシウム成形体を得ることはできなかった。Therefore, conventionally, it has not been possible to obtain a lightweight calcium silicate compact having excellent heat insulating properties.
【０００６】本発明はこのような事情に鑑み、軽量且つ
高強度で断熱性に優れた珪酸カルシウム成形体及びその
製造方法を提供することを目的とする。In view of such circumstances, it is an object of the present invention to provide a calcium silicate compact which is lightweight, has high strength and is excellent in heat insulation, and a method for producing the same.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成する本発
明に係る珪酸カルシウム成形体は、繊維状チタン酸カリ
ウムを含有する珪酸カルシウム成形体であって、上記繊
維状チタン酸カリウムが繊維状珪酸カルシウム水和物と
凝集体を形成した状態で含有されていることを特徴と
し、また、その製造方法は、珪酸質原料、石灰質原料、
繊維状チタン酸カリウム及び水からなる原料スラリーを
加圧下で加熱攪拌して繊維状珪酸カルシウム水和物と繊
維状チタン酸カリウムとの混合凝集体を得、これを成形
乾燥することを特徴とする。A calcium silicate compact according to the present invention for achieving the above object is a calcium silicate compact containing fibrous potassium titanate, wherein the fibrous potassium titanate is a fibrous silicic acid. It is characterized in that it is contained in a state of forming aggregates with calcium hydrate, and the manufacturing method thereof is a siliceous raw material, a calcareous raw material,
A raw material slurry composed of fibrous potassium titanate and water is heated and stirred under pressure to obtain a mixed agglomerate of fibrous calcium silicate hydrate and fibrous potassium titanate, which is molded and dried. .
【０００８】本発明の珪酸カルシウム成形体では、含有
される繊維状チタン酸カリウムが輻射エネルギーを散
乱、反射するように働くので、輻射伝熱が低下してお
り、したがって、断熱性が向上する。また、繊維状チタ
ン酸カリウムは、繊維状珪酸カルシウム水和物との凝集
体となって含有されているので、例えば粉体状のチタン
酸カリウムが単に珪酸カルシウム水和物と混在した状態
で存在している場合より、均一な分散状態を可能にし、
断熱性能の向上が飛躍的に大きい。さらに、繊維状チタ
ン酸カリウムが繊維状珪酸カルシウムとの凝集体となっ
て化学的にも物理的にも結合されているので、繊維状チ
タン酸カリウムの添加による強度への悪影響が発現せ
ず、高強度のものとなる。In the calcium silicate compact of the present invention, the contained fibrous potassium titanate acts so as to scatter and reflect the radiant energy, so that the radiative heat transfer is reduced, and therefore the heat insulating property is improved. Further, since fibrous potassium titanate is contained as an aggregate with fibrous calcium silicate hydrate, for example, powdery potassium titanate exists simply in a state of being mixed with calcium silicate hydrate. It enables a more evenly distributed state than when
Greatly improved thermal insulation performance. Furthermore, since fibrous potassium titanate is chemically and physically bound as an aggregate with fibrous calcium silicate, the addition of fibrous potassium titanate does not exert an adverse effect on strength, It has high strength.
【０００９】本発明で、珪酸カルシウム原料及び石灰質
原料としては、従来と同様、公知の粉末状の材料を使用
することができる。例えば、珪酸質原料としては、珪石
粉末を主として用いることができ、また、所望する比重
により、嵩比重の低いパーライトあるいは非晶質の珪酸
質原料である珪藻土、シリカヒューム等を、珪石粉末の
代りに一部または全量置換することも可能である。ま
た、例えば石灰質原料としては、生石灰、消石灰及びセ
メント等を挙げることができる。In the present invention, as the calcium silicate raw material and the calcareous raw material, known powdery materials can be used as in the prior art. For example, silica stone powder can be mainly used as the siliceous raw material, and perlite or amorphous siliceous raw material diatomaceous earth, silica fume or the like having a low bulk specific gravity can be used instead of the silica stone powder depending on the desired specific gravity. It is also possible to replace a part or the whole amount with. Examples of calcareous raw materials include quick lime, slaked lime and cement.
【００１０】一方、本発明で繊維状チタン酸カリウム
は、粉末状ではなく繊維状となったチタン酸カリウムで
あり、市販品としてはチタン酸カリウムウィスカー（チ
タン工業（株）製；商品名：ＨＴ−２００）を挙げるこ
とができる。また、繊維状チタン酸カリウムは、珪酸質
原料、石灰質原料及び水の原料スラリー中、５〜４０重
量％含有させるのが好ましい。含有量が上記範囲より少
ないと断熱性向上の効果が顕著には発現せず、一方、上
記範囲を越えると十分な強度が得られにくくなるからで
ある。さらに、本発明では本発明の効果を損わない範囲
で従来から使用されている繊維状ワラストナイト、マイ
カ粉末等の無機質充填材等を添加することができる。こ
こで、本発明で繊維状チタン酸カリウム（Ｋ2 Ｏ・６Ｔ
ｉＯ2 ）の好適な性状は繊維長が１０〜５０μｍで繊維
径（太さ）が0.2 〜1.5 μｍのものを用いるのがよい。On the other hand, in the present invention, fibrous potassium titanate is not powder but fibrous potassium titanate. As a commercial product, potassium titanate whiskers (manufactured by Titanium Industry Co., Ltd .; trade name: HT -200). The fibrous potassium titanate is preferably contained in the siliceous raw material, the calcareous raw material, and the raw material slurry of water in an amount of 5 to 40% by weight. This is because if the content is less than the above range, the effect of improving the heat insulating property is not remarkably exhibited, while if it exceeds the above range, it becomes difficult to obtain sufficient strength. Furthermore, in the present invention, conventionally used inorganic fillers such as fibrous wollastonite and mica powder may be added within a range that does not impair the effects of the present invention. Here, in the present invention, fibrous potassium titanate (K 2 O · 6T) is used.
The preferred properties of iO 2 ) are those having a fiber length of 10 to 50 μm and a fiber diameter (thickness) of 0.2 to 1.5 μm.
【００１１】本発明の珪酸カルシウム成形体を得るに
は、珪酸質原料、石灰質原料及び繊維状チタン酸カリウ
ム、並びに必要に応じて他の添加材を予め十分に混合し
た後、水性スラリーとし、これを加熱下、加圧下で攪拌
しながら結晶成長することにより、繊維状珪酸カルシウ
ム水和物とチタン酸カリウムの繊維とが十分に絡合した
凝集体となるようにし、その後、成形乾燥すればよい。In order to obtain the calcium silicate compact of the present invention, a siliceous raw material, a calcareous raw material, fibrous potassium titanate, and, if necessary, other additives are sufficiently mixed in advance to form an aqueous slurry, which is then prepared. By heating and stirring under pressure to grow crystals, the fibrous calcium silicate hydrate and potassium titanate fibers are sufficiently entangled to form an agglomerate, which may be subsequently molded and dried. .
【００１２】[0012]
【実施例】以下、本発明を実施例に基づいて説明する。EXAMPLES The present invention will be described below based on examples.
【００１３】表１に示す配合で下記製造法に従って珪酸
カルシウム成形体を製造し、その曲げ強度及び熱伝導率
を測定した。これらの結果も併せて表１に示す。
（製造方法）生石灰（ＣａＯ９４％を１２倍量の温水に
投入し消化（水和）させる。次いで、珪石粉末（ＳｉＯ
2 ９８％）をＣａＯ／ＳｉＯ2 モル比が1.0 になるよう
に添加し、水／固形分（生石灰＋ケイ石）の重量比が２
０倍となるように添加し、スラリー状物を形成する。こ
の得られたスラリー状物をオートクレーブ中で攪拌しな
がら、１９５℃で１０時間反応させる。この珪酸カリシ
ウム水和物１００重量部に、ガラス繊維５重量部を添加
して、混合後脱水成形し、嵩密度0.14（ｇ／cm3 ）の板
状成形体を得た。この板状成形体を１０５℃で２４時間
乾燥することによりケイ酸カリシウム成形体を得た。
実施例１〜３：繊維状チタン酸カリウムの添加量を１０
部，２０部，４０部と変化させた以外は同様に操作し
た。
比較例１：繊維状チタン酸カリウムを添加しない以外
は、同様に操作した。
比較例２：繊維状チタン酸カリウムの代りに、粉末チタ
ン酸カリウムを添加した以外は同様に操作した。
比較例３：繊維状チタン酸カリウムの代りに、粉末チタ
ン酸カリウムを添加した以外は同様に操作した。
比較例４：実施例２において、オートクレーブ中で攪拌
せずに反応させた以外は実施例２と同様に操作した。
・繊維状チタン酸カリウム
繊維長 １０〜２０μｍ
太さ 0.5 〜1.0 μｍ
・酸化チタン ＴｉＯ2 ９５％
平均粒径 1.2 μｍ
・チタン酸カリウム粉末
平均粒径 0.9 μｍCalcium silicate compacts were produced with the formulations shown in Table 1 according to the following production method, and their bending strength and thermal conductivity were measured. The results are also shown in Table 1. (Manufacturing method) Quick lime (94% of CaO is added to 12 times the amount of warm water to digest (hydrate).
Was added 2 98%) as CaO / SiO 2 molar ratio is 1.0, the weight ratio of water / solids (quick lime + quartzite) 2
It is added to be 0 times to form a slurry. The obtained slurry is reacted in an autoclave at 195 ° C. for 10 hours while stirring. To 100 parts by weight of this calcium silicate hydrate, 5 parts by weight of glass fibers were added, mixed and dehydrated to obtain a plate-shaped molded product having a bulk density of 0.14 (g / cm 3 ). The plate-shaped molded body was dried at 105 ° C. for 24 hours to obtain a calcium silicate molded body. Examples 1 to 3: Addition amount of fibrous potassium titanate to 10
The same operation was carried out except that the number of parts, 20 parts, and 40 parts was changed. Comparative Example 1: The same operation was performed except that fibrous potassium titanate was not added. Comparative Example 2: The same operation was performed except that powdered potassium titanate was added instead of fibrous potassium titanate. Comparative Example 3: The same operation was performed except that powdered potassium titanate was added instead of fibrous potassium titanate. Comparative Example 4: The same operation as in Example 2 was carried out except that the reaction was carried out in Example 2 in the autoclave without stirring.・ Fibrous potassium titanate fiber length 10 to 20 μm thickness 0.5 to 1.0 μm ・ Titanium oxide TiO 2 95% average particle size 1.2 μm ・ Potassium titanate powder average particle size 0.9 μm
【００１４】[0014]
【表１】 [Table 1]
【００１５】表１に示す結果より、本発明の珪酸カルシ
ウム成形体は、繊維状の珪酸カルシウム水和物と繊維状
チタン酸カリウムとが絡み合った凝集体により曲げ強度
及び断熱性が向上しているものと推定される。From the results shown in Table 1, the calcium silicate compact of the present invention has improved flexural strength and heat insulation due to the aggregate of the fibrous calcium silicate hydrate and the fibrous potassium titanate entangled with each other. It is estimated that
【００１６】[0016]
【発明の効果】以上説明したように、本発明によれば、
軽量且つ高強度で高断熱性の珪酸カルシウム硬化体を得
ることができ、保温材及び断熱材の分野で有効利用可能
なものである。As described above, according to the present invention,
It is possible to obtain a light-weight, high-strength, highly heat-insulating calcium silicate cured product, which can be effectively used in the fields of heat insulating materials and heat insulating materials.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０４Ｂ 14:38） Ｚ 2102−4Ｇ ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 5 Identification code Office reference number FI technical display area C04B 14:38) Z 2102-4G
Claims (2)
カルシウム成形体であって、上記繊維状チタン酸カリウ
ムが繊維状珪酸カルシウム水和物と凝集体を形成した状
態で含有されていることを特徴とする珪酸カルシウム成
形体。1. A calcium silicate compact containing fibrous potassium titanate, wherein the fibrous potassium titanate is contained in the form of aggregates with fibrous calcium silicate hydrate. And a calcium silicate compact.
酸カリウム及び水からなる原料スラリーを加圧下で加熱
攪拌して繊維状珪酸カルシウム水和物と繊維状チタン酸
カリウムとの混合凝集体を得、これを成形乾燥すること
を特徴とする珪酸カルシウム成形体の製造方法。2. A raw material slurry comprising a siliceous raw material, a calcareous raw material, fibrous potassium titanate and water is heated and stirred under pressure to form a mixed aggregate of fibrous calcium silicate hydrate and fibrous potassium titanate. A method for producing a calcium silicate compact, which comprises obtaining and drying this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18758791A JPH0532449A (en) | 1991-07-26 | 1991-07-26 | Calcium silicate molded product and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18758791A JPH0532449A (en) | 1991-07-26 | 1991-07-26 | Calcium silicate molded product and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0532449A true JPH0532449A (en) | 1993-02-09 |
Family
ID=16208720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18758791A Pending JPH0532449A (en) | 1991-07-26 | 1991-07-26 | Calcium silicate molded product and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532449A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100945083B1 (en) * | 2009-04-01 | 2010-03-05 | 강토중공업(주) | Multi-grapple for excavator |
-
1991
- 1991-07-26 JP JP18758791A patent/JPH0532449A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100945083B1 (en) * | 2009-04-01 | 2010-03-05 | 강토중공업(주) | Multi-grapple for excavator |
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