JPH0723244B2 - Calcium silicate compact - Google Patents
Calcium silicate compactInfo
- Publication number
- JPH0723244B2 JPH0723244B2 JP61294773A JP29477386A JPH0723244B2 JP H0723244 B2 JPH0723244 B2 JP H0723244B2 JP 61294773 A JP61294773 A JP 61294773A JP 29477386 A JP29477386 A JP 29477386A JP H0723244 B2 JPH0723244 B2 JP H0723244B2
- Authority
- JP
- Japan
- Prior art keywords
- calcium silicate
- calcium
- nitrate
- hydrothermal synthesis
- synthesis reaction
- 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.)
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Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は珪酸カルシウム成形体に関するものである。こ
の成形体あるいは少量の石綿等の無機繊維を加えて製造
した成形体は、軽量で高強度であり、かつ断熱性、耐熱
性を具備し、保温材、断熱材等の用途に好適なものであ
る。また補強繊維、ラテックス等を加えた珪酸カルシウ
ム成形体は耐熱性、寸法安定性に優れ、高強度で木材と
同様の加工性を具備しており、建築材料としても好適に
使用できるものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a calcium silicate compact. This molded product or a molded product manufactured by adding a small amount of inorganic fiber such as asbestos is lightweight, has high strength, and has heat insulating properties and heat resistance, and is suitable for applications such as heat insulating materials and heat insulating materials. is there. Further, the calcium silicate molded product to which the reinforcing fiber, latex and the like are added has excellent heat resistance and dimensional stability, has high strength and has workability similar to that of wood, and can be suitably used as a building material.
［従来の技術］ 水熱合成反応した珪酸カルシウム（通常はトベルモライ
トあるいはゾノトライト）は軽量で熱的に安定な物質で
あり、この特性を利用した珪酸カルシウム成形体および
その製造方法については多くの報告があり、また実際に
市販もされている。[Prior Art] Calcium silicate (usually tobermorite or xonotlite) that has undergone hydrothermal synthesis is a lightweight and thermally stable substance, and many calcium silicate compacts and manufacturing methods utilizing this characteristic are known. There are reports, and it is actually on the market.
このうち軽量という特性を生かしたものに断熱材、保温
材があり、その製造方法については（１）水熱合成反応
したゾノトライト単独または粘土を添加した珪酸カルシ
ウム成形体（特公昭53−12526号公報）、（２）水熱合
成反応時に苦土原料を加えて耐熱性を改良した珪酸カル
シウム成形体（特開昭48−28400号公報）等が提案され
ている。Among these, there are heat insulating materials and heat insulating materials that take advantage of the characteristic of being lightweight, and the manufacturing method thereof is as follows: (1) Hydrothermally synthesized zonotolite alone or calcium added silicate compact (Japanese Patent Publication No. 53-12526) ), (2) Calcium silicate compacts (Japanese Patent Laid-Open No. 48-28400) in which a magnesium-based material is added during the hydrothermal synthesis reaction to improve heat resistance have been proposed.
また、珪酸カルシウムに補強繊維、ラテックス等を添加
し、嵩密度0.3〜0.7g/cm3に成形して人造木材を製造し
ようとする試みも（１）特開昭60−24625号公報、
（２）特願昭60−261311号（特開昭62−123053号公
報）、（３）特願昭61−76701号（特開昭62−235276号
公報）などに多数提案されている。Further, an attempt to produce artificial wood by adding reinforcing fibers, latex, etc. to calcium silicate and molding it to a bulk density of 0.3 to 0.7 g / cm 3 (1) JP-A-60-24625,
(2) Japanese Patent Application No. 60-261311 (Japanese Patent Application Laid-Open No. 62-123053) and (3) Japanese Patent Application No. 61-76701 (Japanese Patent Application Laid-Open No. 62-235276) have been proposed.
［発明が解決しようとする問題点］ 珪酸カルシウム（通常はゾノトライトあるいはトベルモ
ライト）は水熱合成反応によってつくられ、成形体はこ
の珪酸カルシウムスラリーを脱水成形後、乾燥して製造
されるが以下のような欠点を有している。[Problems to be Solved by the Invention] Calcium silicate (usually xonotlite or tobermorite) is produced by a hydrothermal synthesis reaction, and a molded body is manufactured by dehydrating and molding this calcium silicate slurry and then drying it. It has the following drawbacks.
（１）水熱合成反応に長時間を要する。(1) It takes a long time for the hydrothermal synthesis reaction.
（２）珪酸カルシウム成形体の乾燥収縮が大きい。(2) The dry shrinkage of the calcium silicate compact is large.
（３）珪酸カルシウム単独の成形体は強度が低い。(3) The strength of the formed body of calcium silicate alone is low.
（４）珪酸カルシウム成形体は高温において強度が劣化
し耐熱性が悪い。(4) Calcium silicate compacts have poor strength at high temperatures and poor heat resistance.
（１）の解決法として苦土原料の添加、（３）の解決法
としては粘土の添加が提案されているが、まだ十分な解
決法とはなっていない。Although addition of a magnesia material as a solution to (1) and addition of clay as a solution to (3) have been proposed, they are not yet a sufficient solution.
また、嵩密度0.3〜0.7g/cm3の建築材料用珪酸カルシウ
ム成形体いわゆる人造木材も強度がまだ不十分であり、
さらに多量のラテックスおよび補強繊維を添加している
ため高温での安全性や加工性に問題がある。In addition, the strength of the calcium silicate compact for building materials with a bulk density of 0.3 to 0.7 g / cm 3 , so-called artificial wood, is still insufficient,
Furthermore, since a large amount of latex and reinforcing fibers are added, there are problems in safety and processability at high temperatures.
［問題点を解決するための手段および作用］ 本発明は、硝酸カルシウム、硝酸ナトリウム、塩化カル
シウム、塩化ナトリウム、硝酸、塩酸および酢酸よりな
る群の中から選ばれる少なくとも一種の化合物を、珪酸
質原料、石灰質原料および水にSiO2１モルに対して0.00
1〜0.20モルの割合で配合して水熱合成反応を行い、生
成した珪酸カルシウムスラリーを成形、乾燥して得られ
る珪酸カルシウム成形体に関する。[Means and Actions for Solving Problems] In the present invention, at least one compound selected from the group consisting of calcium nitrate, sodium nitrate, calcium chloride, sodium chloride, nitric acid, hydrochloric acid and acetic acid is used as a siliceous raw material. , 0.002 for 1 mol of SiO 2 in calcareous raw materials and water
The present invention relates to a calcium silicate compact obtained by blending in a proportion of 1 to 0.20 mol, performing a hydrothermal synthesis reaction, shaping the resulting calcium silicate slurry, and drying.
本発明の珪酸カルシウム成形体用の珪酸カルシウムスラ
リーは、一般的には珪酸質原料と石灰質原料よりなる水
性スラリーに硝酸カルシウムなどを添加し、オートクレ
ーブ中で水熱合成反応させて得られる。このようにして
得られた珪酸カルシウムスラリーは、従来の硝酸カルシ
ウムなどを添加しない場合に得られる珪酸カルシウムス
ラリーに比べて合成に要する時間が少なくて済み、また
この珪酸カルシウムスラリーはみかけの比重が0.15〜0.
17g/cm3であり、耐熱性、寸法安定性に優れ、高強度を
有する珪酸カルシウム成形体を提供できる。The calcium silicate slurry for the calcium silicate compact of the present invention is generally obtained by adding calcium nitrate or the like to an aqueous slurry composed of a siliceous raw material and a calcareous raw material and carrying out a hydrothermal synthesis reaction in an autoclave. The calcium silicate slurry thus obtained requires less time for synthesis than the calcium silicate slurry obtained when conventional calcium nitrate or the like is not added, and the calcium silicate slurry has an apparent specific gravity of 0.15. ~ 0.
Since it is 17 g / cm 3 , a calcium silicate compact having excellent heat resistance and dimensional stability and high strength can be provided.
本発明においては水熱合成反応に際して硝酸カルシウ
ム、硝酸ナトリウム、塩化カルシウム、塩化ナトリウ
ム、硝酸、塩酸および酢酸よりなる群の中から選ばれる
少なくとも一種の化合物を使用する。配合比（モル比）
はSiO2:CaO:硝酸カルシウムなど＝1:0.95〜1.10:0.001
〜0.20で好ましくは、SiO2:CaO:硝酸カルシウムなど＝
1:0.95〜1.10:0.001〜0.10である。硝酸カルシウムなど
の添加割合が0.001未満の場合は効果は認められず、添
加割合が0.20を超えると高温安全性や耐水性に問題が生
じる。In the present invention, at least one compound selected from the group consisting of calcium nitrate, sodium nitrate, calcium chloride, sodium chloride, nitric acid, hydrochloric acid and acetic acid is used in the hydrothermal synthesis reaction. Mixing ratio (molar ratio)
Is SiO 2 : CaO: calcium nitrate, etc. = 1: 0.95 to 1.10: 0.001
˜0.20, preferably SiO 2 : CaO: calcium nitrate etc. =
It is 1: 0.95 to 1.10: 0.001 to 0.10. If the addition ratio of calcium nitrate or the like is less than 0.001, no effect is observed, and if the addition ratio is more than 0.20, problems at high temperature safety and water resistance occur.
硝酸カルシウムなどを添加し、水熱合成反応を行って得
た珪酸カルシウムスラリーを後述するような方法で成
形、乾燥すると断熱材、保温材あるいは人造木材として
好適に使用し得る珪酸カルシウム成形体が製造される
が、成形、乾燥時に硝酸カルシウムなどを生じさせる陰
イオンの大部分が流出し、前述の配合比の場合珪酸カル
シウム成形体中に残存する陰イオンの量は10-4〜10-1モ
ル％すなわち1ppm〜0.1重量％である。Calcium silicate slurry obtained by carrying out hydrothermal synthesis reaction by adding calcium nitrate or the like is molded by a method as described below and dried to produce a calcium silicate molded body that can be suitably used as a heat insulating material, heat insulating material or artificial wood. However, most of the anions that cause calcium nitrate, etc. to flow out during molding and drying flow out, and in the case of the above-mentioned mixing ratio, the amount of anions remaining in the calcium silicate compact is 10 -4 to 10 -1 mol. %, That is, 1 ppm to 0.1% by weight.
この硝酸カルシウムなどの添加効果の原因については明
らかでないが、合成に要する時間が短くて済むのは硝酸
カルシウムなどが水熱合成反応を助長する媒晶剤的な作
用を有するものと推定される。Although the cause of the effect of adding calcium nitrate or the like is not clear, it is presumed that the time required for the synthesis is short because calcium nitrate or the like acts as a habit modifier for promoting the hydrothermal synthesis reaction.
石灰質原料としては生石灰、消石灰等があり、珪酸質原
料としては珪石、珪砂、フェロシリコンダストなどが使
用される。The calcareous raw materials include quick lime and slaked lime, and the siliceous raw materials include silica stone, silica sand, and ferrosilicon dust.
また、水とこれら原料との配合割合は水／（石灰質原料
＋珪酸質原料）重量比で５〜15である。The mixing ratio of water and these raw materials is 5 to 15 in terms of water / (calcinous raw material + silicic raw material) weight ratio.
次に本発明の珪酸カルシウム成形体の好適な製造法の一
例を示す。Next, an example of a suitable method for producing the calcium silicate compact of the present invention will be shown.
SiO2/CaO（モル比）が１、硝酸カルシウムなど/CaO（モ
ル比）が0.01〜0.05になるように、珪酸質原料と石灰質
原料と硝酸カルシウムなどを配合し、原料に対して水を
５〜15重量倍加えて水熱合成反応させ、珪酸カルシウム
スラリー詳しくは珪酸カルシウム水和結晶物の水スラリ
ーを得る。水熱合成反応は一般にオートクレーブを使用
して行なわれる。SiO 2 / CaO (molar ratio) is 1 and calcium nitrate, etc. / CaO (molar ratio) is 0.01-0.05, by blending siliceous raw material, calcareous raw material, calcium nitrate, etc. Approximately 15 times by weight is added and hydrothermal synthesis reaction is performed to obtain a calcium silicate slurry, specifically, an aqueous slurry of calcium silicate hydrated crystals. The hydrothermal synthesis reaction is generally performed using an autoclave.
珪酸カルシウムスラリーの固形分100重量部に対して石
綿、ガラス繊維等を１〜10重量部添加混合した後、嵩密
度0.1〜0.4g/cm3になるように成形、乾燥された成形体
は断熱材、保温材として好適である。1 to 10 parts by weight of asbestos, glass fibers, etc. are added to 100 parts by weight of the solid content of the calcium silicate slurry, and mixed, and then molded to a bulk density of 0.1 to 0.4 g / cm 3 , and the dried molded body is thermally insulated. Suitable as a material and heat insulating material.
珪酸カルシウムスラリーの固形分100重量部に対して、
１〜20重量部のスチレン−ブタジエン共重合体、エチレ
ン−酢酸ビニル共重合体等の重合体エマルジョン、１〜
10重量部のガラス繊維等の補強繊維、その他に必要に応
じて分散剤、膨張材を添加混合した後珪酸カルシウムス
ラリーを成形する。成形法としては例えば型枠に充填し
て加圧脱水する方法が挙げられるが、目的、用途に応じ
て従来公知の成形法が適宜採用される。この成形物を乾
燥すると目的とする珪酸カルシウム成形体いわゆる人造
木材が得られる。乾燥する際の温度は特に制限されない
が、100〜180℃通常110〜160℃の温度が採用される。For 100 parts by weight of the solid content of the calcium silicate slurry,
1 to 20 parts by weight of styrene-butadiene copolymer, ethylene-vinyl acetate copolymer and other polymer emulsions, 1 to
10 parts by weight of reinforcing fibers such as glass fibers, and optionally a dispersant and an expanding material are added and mixed, and then a calcium silicate slurry is formed. Examples of the molding method include a method of filling in a mold and dehydration under pressure, and a conventionally known molding method is appropriately adopted depending on the purpose and application. When this molded product is dried, the desired calcium silicate molded product, so-called artificial wood, is obtained. The temperature for drying is not particularly limited, but a temperature of 100 to 180 ° C and usually 110 to 160 ° C is adopted.
以下に本発明の実施例を示すが本発明は実施例に限定さ
れない。なお、いずれの場合も加圧脱水するさいの圧力
を２〜５段階にかえ、嵩密度が２〜５段階に相違する成
形体を調製しそれらの物性を試験した。Examples of the present invention are shown below, but the present invention is not limited to the examples. In each case, the pressure during dehydration under pressure was changed to 2 to 5 steps, and molded articles having different bulk densities from 2 to 5 steps were prepared and their physical properties were tested.
［実施例］ 実施例における試験結果は次の方法に依った。[Example] The test results in the examples depend on the following method.
（１）曲げ強度:JIS A1408に準じた。(1) Bending strength: According to JIS A1408.
（２）比強度 ：（曲げ強度）／（嵩密度）2 （３）乾燥時の収縮率：プレス成形後及び乾燥後の成形
体の厚さを測定し、乾燥時の収縮率を求めた。(2) Specific strength: (bending strength) / (bulk density) 2 (3) Shrinkage during drying: The thickness of the molded product after press molding and after drying was measured to determine the shrinkage during drying.
（４）生成物 :X線回折より同定。(4) Product: identified by X-ray diffraction.
（ ）内は存在が痕跡程度認められるも
の。In (), the presence of traces is recognized.
（５）残存強度:1000℃で３時間加熱後常温まで冷却し
た後の強度。(5) Residual strength: Strength after heating at 1000 ° C. for 3 hours and cooling to room temperature.
実施例１ 珪石粉と消石灰と硝酸カルシウム・４水塩とをSiO2:Ca
O:Ca(NO3)2のモル比が1:1:0.02になる様配合し、CaOとS
iO2との合計重量に対して10倍量の水を加えてオートク
レーブ中で撹拌しながら温度210℃、圧力19kgf/cm2で３
時間水熱合成反応させた。得られた珪酸カルシウムスラ
リーに石綿を珪酸カルシウム固形分に対して１重量部添
加したものをプレス成形し、140℃で16時間乾燥して成
形体を得た。成形体の試験結果を第１表に示す。Example 1 Silica powder, slaked lime, calcium nitrate and tetrahydrate were mixed with SiO 2 : Ca.
Compounded so that the molar ratio of O: Ca (NO 3 ) 2 becomes 1: 1: 0.02, and CaO and S
Add 10 times the amount of water to the total weight of iO 2 and stir in an autoclave at a temperature of 210 ° C and a pressure of 19 kgf / cm 2 for 3
The hydrothermal synthesis reaction was performed for an hour. One part by weight of asbestos was added to the calcium silicate solid content in the obtained calcium silicate slurry was press-molded and dried at 140 ° C. for 16 hours to obtain a molded body. The test results of the molded product are shown in Table 1.
実施例２、３ 水熱合成反応時間を１時間と５時間に変えた以外は実施
例１と同様にして成形体を得た。成形体の試験結果を第
１表に示す。Examples 2 and 3 Molded articles were obtained in the same manner as in Example 1 except that the hydrothermal synthesis reaction time was changed to 1 hour and 5 hours. The test results of the molded product are shown in Table 1.
実施例４、５ 硝酸カルシウム・４水塩の添加量をCaOとのモル比が0.0
1、0.05に配合した以外は実施例１と同様にして成形体
を得た。成形体の試験結果を第１表に示す。Examples 4 and 5 Addition amount of calcium nitrate tetrahydrate is 0.0 in molar ratio with CaO.
A molded product was obtained in the same manner as in Example 1 except that the compounding amounts were 1 and 0.05. The test results of the molded product are shown in Table 1.
比較例１ 水熱合成反応時に硝酸カルシウム・４水塩を添加しなか
ったこと以外は実施例１と同様にして成形体を得た。成
形体の試験結果を第１表に示す。Comparative Example 1 A molded body was obtained in the same manner as in Example 1 except that calcium nitrate / tetrahydrate was not added during the hydrothermal synthesis reaction. The test results of the molded product are shown in Table 1.
比較例２、３ 水熱合成反応時に硝酸カルシウム・４水塩を添加しなか
ったこと以外は実施例２、３と同様にして成形体を得
た。成形体の試験結果を第１表に示す。Comparative Examples 2 and 3 Molded articles were obtained in the same manner as in Examples 2 and 3 except that calcium nitrate tetrahydrate was not added during the hydrothermal synthesis reaction. The test results of the molded product are shown in Table 1.
比較例４、５ 硝酸カルシウム・４水塩の添加量をCaOとのモル比が0.0
005、0.25とした以外は実施例１と同様にして成形体を
得た。成形体の試験結果を第１表に示す。Comparative Examples 4 and 5 The molar ratio of calcium nitrate tetrahydrate to CaO was 0.0.
A molded product was obtained in the same manner as in Example 1 except that the values were 005 and 0.25. The test results of the molded product are shown in Table 1.
実施例６、７ 硝酸カルシウム・４水塩のかわりに、硝酸（61％水溶
液）、塩化カルシウムをCaOとのモル比が0.02になる様
に配合した以外は実施例１と同様にして成形体を得た。
その試験結果を第２表に示す。Examples 6 and 7 A molded article was prepared in the same manner as in Example 1 except that nitric acid (61% aqueous solution) and calcium chloride were added in a molar ratio of 0.02 instead of calcium nitrate tetrahydrate. Obtained.
The test results are shown in Table 2.
比較例６ 硝酸カルシウム・４水塩のかわりに、硫酸カルシウム・
２水塩をCaOとのモル比が0.01になる様に配合した以外
は実施例１と同様にして成形体を得た。その試験結果を
第２表に示す。Comparative Example 6 Instead of calcium nitrate / tetrahydrate, calcium sulfate /
A molded body was obtained in the same manner as in Example 1 except that dihydrate was blended so that the molar ratio with CaO was 0.01. The test results are shown in Table 2.
実施例８ 実施例１で得られた珪酸カルシウムスラリーに、珪酸カ
ルシウム100重量部に対してラテックス（ステレン−ブ
タジエン系ラテックス、日本ゼオン（株）製、商品名LX
416）固体重量４重量部、分散剤（オキシカルボン酸
塩、藤沢薬品工業（株）製、商品名パリック＃１）２重
量部および膨張材（主成分はカルシウムサルフォアルミ
ネート即ちアウイン3CaO・3Al2O3・CaSO4、他に遊離石
灰と遊離せっこうを含む、電気化学工業（株）製、商品
名CSA＃20）2.5重量部を添加、混合した後、ガラス繊維
（日東紡績（株）製、商品名CS12GYD）４重量部を添加
混合し、得られた高分散珪酸カルシウムスラリーをプレ
ス成形し、120℃で16時間乾燥し珪酸カルシウム成形体
を得た。成形体の試験結果を第３表に示す。Example 8 The calcium silicate slurry obtained in Example 1 was mixed with 100 parts by weight of calcium silicate latex (sterene-butadiene latex, manufactured by Nippon Zeon Co., Ltd., trade name LX).
416) 4 parts by weight of solid, 2 parts by weight of dispersant (oxycarboxylic acid salt, manufactured by Fujisawa Pharmaceutical Co., Ltd., trade name Palic # 1) and expander (main component is calcium sulphoaluminate, that is, Auin 3CaO.3Al). After adding and mixing 2.5 parts by weight of 2 O 3 · CaSO 4 and other free lime and free gypsum, manufactured by Denki Kagaku Kogyo Co., Ltd., trade name CSA # 20, glass fiber (Nitto Boseki Co., Ltd.) (Trade name: CS12GYD, manufactured by CS12GYD) was added and mixed, and the obtained highly dispersed calcium silicate slurry was press-molded and dried at 120 ° C. for 16 hours to obtain a calcium silicate compact. The test results of the molded product are shown in Table 3.
比較例７ 比較例１で得られた珪酸カルシウムスラリーを用い実施
例８と同様にして成形体を得た。成形体の試験結果を第
３表に示す。Comparative Example 7 A molded body was obtained in the same manner as in Example 8 using the calcium silicate slurry obtained in Comparative Example 1. The test results of the molded product are shown in Table 3.
［発明の効果］ 本発明は、保温材、断熱材あるいは人造木材として好適
に利用される機械的強度の優れた珪酸カルシウム成形体
を提供している。 [Effects of the Invention] The present invention provides a calcium silicate compact excellent in mechanical strength, which is suitably used as a heat insulating material, a heat insulating material, or artificial wood.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０４Ｂ 24:06 Ａ 22:14 Ｄ 14:42 Ｚ 22:08 Ｂ 22:12 24:04） ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location C04B 24:06 A 22:14 D 14:42 Z 22:08 B 22:12 24:04)
Claims (3)
ルシウム、塩化ナトリウム、硝酸、塩酸および酢酸より
なる群の中から選ばれる少なくとも一種の化合物を、珪
酸質原料、石灰質原料および水にSiO2１モルに対して0.
001〜0.20モルの割合で配合して水熱合成反応を行い、
生成した珪酸カルシウムスラリーを成形、乾燥して得ら
れる珪酸カルシウム成形体。1. At least one compound selected from the group consisting of calcium nitrate, sodium nitrate, calcium chloride, sodium chloride, nitric acid, hydrochloric acid and acetic acid is added to 1 mol of SiO 2 in siliceous raw material, calcareous raw material and water. On the other hand, 0.
Blended at a ratio of 001 to 0.20 mol to perform hydrothermal synthesis reaction,
A calcium silicate compact obtained by molding and drying the generated calcium silicate slurry.
の範囲第（１）項記載の珪酸カルシウム成形体。2. A calcium silicate compact according to claim 1, which contains an inorganic fiber as an additive.
ックスを含有する特許請求の範囲第（１）項記載の珪酸
カルシウム成形体。3. A calcium silicate compact according to claim 1, containing reinforcing fibers and / or latex as an additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61294773A JPH0723244B2 (en) | 1986-12-12 | 1986-12-12 | Calcium silicate compact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61294773A JPH0723244B2 (en) | 1986-12-12 | 1986-12-12 | Calcium silicate compact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63147851A JPS63147851A (en) | 1988-06-20 |
| JPH0723244B2 true JPH0723244B2 (en) | 1995-03-15 |
Family
ID=17812107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61294773A Expired - Lifetime JPH0723244B2 (en) | 1986-12-12 | 1986-12-12 | Calcium silicate compact |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723244B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4556016B2 (en) * | 2000-10-03 | 2010-10-06 | 神島化学工業株式会社 | Energy-saving manufacturing method and molded body of ceramic-based molded body |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5926957A (en) * | 1982-08-02 | 1984-02-13 | 旭化成株式会社 | Manufacture of calcium silicate hydrate hardened body |
-
1986
- 1986-12-12 JP JP61294773A patent/JPH0723244B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63147851A (en) | 1988-06-20 |
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