JPH02279550A - Production of calcium silicate-based molded body - Google Patents
Production of calcium silicate-based molded bodyInfo
- Publication number
- JPH02279550A JPH02279550A JP10026389A JP10026389A JPH02279550A JP H02279550 A JPH02279550 A JP H02279550A JP 10026389 A JP10026389 A JP 10026389A JP 10026389 A JP10026389 A JP 10026389A JP H02279550 A JPH02279550 A JP H02279550A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- calcium silicate
- molded body
- raw material
- resin
- 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.)
- Granted
Links
- 239000000378 calcium silicate Substances 0.000 title claims description 21
- 229910052918 calcium silicate Inorganic materials 0.000 title claims description 21
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000000843 powder Substances 0.000 claims abstract description 49
- 239000011347 resin Substances 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 14
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 14
- 235000012239 silicon dioxide Nutrition 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 13
- 239000000203 mixture Substances 0.000 abstract description 11
- 230000003014 reinforcing effect Effects 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 238000000465 moulding Methods 0.000 abstract description 8
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 6
- 239000000377 silicon dioxide Substances 0.000 abstract description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 3
- 239000004568 cement Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 4
- 239000007858 starting material Substances 0.000 abstract 2
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 239000002657 fibrous material Substances 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 239000004809 Teflon Substances 0.000 description 5
- 229920006362 Teflon® Polymers 0.000 description 5
- 239000004566 building material Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 239000011256 inorganic filler Substances 0.000 description 4
- 229910003475 inorganic filler Inorganic materials 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 241000283690 Bos taurus Species 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- MKTRXTLKNXLULX-UHFFFAOYSA-P pentacalcium;dioxido(oxo)silane;hydron;tetrahydrate Chemical compound [H+].[H+].O.O.O.O.[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O MKTRXTLKNXLULX-UHFFFAOYSA-P 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
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)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分が〉
本発明は、例えば建築材料、保温材料あるいは耐火断熱
材料として用いるケイ酸カルシウム質成形体の製造方法
に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Applications> The present invention relates to a method for producing a calcium silicate molded body, which is used, for example, as a building material, a heat-retaining material, or a fireproof and heat-insulating material.
〈従来の技術〉
従来より、例えば、建築材料、保温あるいは耐火断熱材
料として用いろケイ酸カルシウム成形体は、以下の方法
により得られている。<Prior Art> Calcium silicate molded bodies used, for example, as building materials, heat-insulating materials, or fire-resistant and heat-insulating materials have heretofore been obtained by the following method.
■ ケイ酸質原料及び石灰質原料を水で混練し、スラリ
ー状としたものを抄造機を用いシート状に抄き上げ、こ
れを高温、高圧水蒸気圧下でケイ酸カルシウム水和物を
生成させ硬化させる方法。■ Siliceous raw materials and calcareous raw materials are kneaded with water to form a slurry, which is then made into a sheet using a paper-making machine, which is then hardened by producing calcium silicate hydrate under high temperature and high pressure steam pressure. Method.
■ ケイ酸質原料及び石灰質原料を水で混練し、スラリ
ー状としたものをプレス脱水成形し、脱型後■と同様高
温高圧水蒸気下で硬化させる方法。この場合、ケイ酸質
原料の一部を珪藻土あるいはシリカヒユーム等の非晶質
のケイ酸質原料に置き換え、ｍ１１ａスラリーを大気圧
下９０〜１００℃で加熱し、かさ高なｌ！濶ゲルを成牛
さ廿た後、プレス説水成形する事で上記■の場合よりか
さ比重の低いものが得られる。■ A method in which silicic acid raw materials and calcareous raw materials are kneaded with water to form a slurry, which is press-dehydrated and then cured under high-temperature, high-pressure steam as in ■ after demolding. In this case, a part of the silicic acid raw material is replaced with an amorphous silicic acid raw material such as diatomaceous earth or silica hume, and the m11a slurry is heated at 90 to 100°C under atmospheric pressure to form a bulky l! After the gel is fed to adult cows, it is press-molded and molded using water, resulting in a product with a lower bulk specific gravity than in the case of (2) above.
■ ケイ酸質原料及び石灰質原料を水で混練し、スラリ
ー状態のまま、高温高圧水蒸気下で反応させ、ケイ酸カ
ルシウム水和物を生成させた後、必要に応じて補強用繊
維または、耐熱性無機質充填材を混練した後プレス脱水
成形し、乾燥する方法。■ Silicic acid raw materials and calcareous raw materials are kneaded with water and reacted in a slurry state under high temperature and high pressure steam to produce calcium silicate hydrate, and then reinforcing fibers or heat resistant materials are added as needed. A method in which inorganic fillers are kneaded, pressed, dehydrated, and dried.
しかしながら、従来の上記■〜■の方法（いわゆる湿式
法）では、原料を一度水と混和してスラリー状、あるい
は、ジェル状としてから高温高圧水蒸気下で養生する必
要がある。また、従来法は、製造工程が例えばプレス脱
水等を行うためＭＨとなるばかりか、工程中に生成物に
、例えば収縮等が発生するという問題がある。However, in the conventional methods (so-called wet methods) mentioned above, it is necessary to mix the raw materials with water to form a slurry or gel, and then cure it under high-temperature, high-pressure steam. Further, in the conventional method, the production process includes, for example, press dehydration, which not only results in MH but also causes problems such as shrinkage of the product during the process.
このため、従来より乾燥粉末の状態で成形する方法が種
々開発されている。For this reason, various methods have been developed for molding the powder in a dry powder state.
例えば、特公昭４２−６５８号公報や特公昭４２−６５
９号公報には、カーバイト排石灰について乾燥状態のま
まケイ酸質粉末と共に用いて、プレス成形した後、オー
トクレーブにて加熱蒸気により処理する技術が開示され
ている。For example, Japanese Patent Publication No. 42-658 and Japanese Patent Publication No. 42-65
No. 9 discloses a technique in which waste carbide lime is used in a dry state together with siliceous powder, press-molded, and then treated with heated steam in an autoclave.
また、特公昭６１−２５６７２号公報には、ケイ酸質原
料と石灰質原料とを水を加えろことなく混合した後、そ
のままの状態で該混合物を成形用型に充填し、高湯高圧
水蒸気下で反応硬化させてケイ酸カルシウム水和物を含
む成形体を得ろ技術（いオ）ゆる乾式方法）が開示され
ている。In addition, Japanese Patent Publication No. 61-25672 discloses that after mixing a silicic acid raw material and a calcareous raw material without adding water, the mixture is filled into a mold as it is, and the mixture is heated under hot water and high pressure steam. A technique (dry method) for obtaining a shaped body containing calcium silicate hydrate by reaction curing is disclosed.
〈発明が解決しようとするｆｉｆｉ＞
しかしながら、従来のいわゆる乾式方法においては、湿
式合成法に比べて、得られる成形体の強度が著しく低い
と共に、切断時等の加工時に破損あるいは、ひび割れ等
が発生し易く、またその際粉塵が発生し易く、手等に粉
が付いてしまうという問題がある。<fifi to be solved by the invention> However, in the conventional so-called dry method, the strength of the obtained molded product is significantly lower than that in the wet synthesis method, and damage or cracks occur during processing such as cutting. There is a problem in that it is easy to do this, and it also tends to generate dust, resulting in dust getting on your hands.
本発明は、以上述べた事情に鑑み、強度不足のない、製
造が簡易で、例えば、建築材料あるいは各覆保瀾材料及
び耐火断熱材料に用いて好適なケイ酸カルシウムａ成ｉ
体の製造方法を提供することを目的とする。In view of the above-mentioned circumstances, the present invention provides a calcium silicate a composition that does not lack strength, is easy to manufacture, and is suitable for use in, for example, building materials, various covering materials, and fire-resistant insulation materials.
The purpose is to provide a method for manufacturing the body.
く課題を解決するための手段〉
前記目的を達成するための本発明のケイ酸カルシウム質
成形体の製造方法の構成は、ケイｎ質と石灰質とを含有
する粉末原料を、粉末の状態で水を加えることなく均一
に混合し、その後高温高圧水蒸気下で反応硬化させるケ
イ酸カルシウム質成形体の製造方法において、上記粉末
原料の一部に樹脂粉末を添加することを特徴とする。Means for Solving the Problems The method for producing a calcium silicate molded body of the present invention to achieve the above object has a structure in which a powder raw material containing silicic material and calcareous material is mixed with water in a powder state. The method for producing a calcium silicate molded body is characterized in that a resin powder is added to a part of the powder raw material, in which the calcium silicate molded body is homogeneously mixed without adding, and then cured by reaction under high-temperature, high-pressure steam.
以下、本発明の構成を詳細に説明する。Hereinafter, the configuration of the present invention will be explained in detail.
ここで、本発明でケイ酸質及び石灰質を含有する粉末原
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、ケイ酸質原料としては、ケイ石
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ケイ
酸質原料であるケイ凍土、シリカヒユーム等を、ケイ石
粉末の代りに一部または全量Ｗｌ換する乙とも可能であ
る。Here, as the powder raw material containing silicic acid and calcareous material in the present invention, known powdery materials can be used as in the past. For example, as the silicic acid raw material, silica powder can be mainly used, and depending on the desired specific gravity, perlite with low bulk specific gravity or amorphous silicic acid raw material such as diatomaceous earth or silica hume can be used. It is also possible to replace part or all of the stone powder with Wl.
また、例えば石灰質原料としては、生石灰。Also, for example, as a calcareous raw material, quicklime is used.
消石灰及びセメント等を挙げることができろ。Can you name slaked lime and cement?
これらの原料粉末は均一粒径とするのが均一に混合する
上でより好適である。It is more suitable for these raw material powders to have a uniform particle size for uniform mixing.
本発明で上記ケイ酸質と石灰質とを含有する粉末原料の
一部に、樹脂粉末を添加することにより、得られた成形
体の強度の向上が図られ、更に粉塵等も発生しないので
加工性が一段と向上する。In the present invention, by adding resin powder to a part of the powder raw material containing silicic acid and calcareous materials, the strength of the obtained molded product is improved, and furthermore, since no dust is generated, it is easy to process. will improve further.
ここで、この樹脂粉末としては、例えばポリエチレン、
ポリテトラフルオロエチレン（商品名；テフロン、以下
「テフロン」と略す）、フェノール樹脂、塩化ビニル、
ポリアミド、メタクリル樹脂、ポリイミド等に代表され
る付加重合系２重縮合系、付加縮合系。Here, as this resin powder, for example, polyethylene,
Polytetrafluoroethylene (trade name: Teflon, hereinafter abbreviated as "Teflon"), phenolic resin, vinyl chloride,
Addition polymerization systems, double condensation systems, and addition condensation systems, represented by polyamide, methacrylic resin, polyimide, etc.
開環重合系の高分子ＩＩＩＩＩＮの粉状体を挙げること
ができる。Examples include powder of ring-opening polymer IIIIN.
またこの樹脂粉末の添加量は粉末原料に対して、１重量
％以上添加するのが好ましく、更に好適には５〜４０重
量％が望ましい。これは１Ｍ！量％以下ではその添加効
果すなわち高強度のものが得られず、４０重量％を越え
ろと耐熱性の低下、不燃性の低下、コスト等により好ま
しくない。Further, the amount of the resin powder added is preferably 1% by weight or more, more preferably 5 to 40% by weight, based on the powder raw material. This is 1M! If the amount is less than 40% by weight, the effect of addition, that is, high strength cannot be obtained, and if it exceeds 40% by weight, it is undesirable due to a decrease in heat resistance, a decrease in nonflammability, cost, etc.
尚、不燃性等を要求しない特定用途に用いる場合には、
４０ｆｉ量％以上添加しても、用途に合った成形体を得
ろことができる。In addition, when used for specific purposes that do not require nonflammability,
Even if it is added in an amount of 40 fi amount % or more, a molded article suitable for the purpose can be obtained.
また、上記４！ｌ！ｌ粉末はオートクレーブによる加熱
（通常１８０〜２００℃）で熱分解しないものが要求さ
れる。更に、この樹脂粉末の融点は、上記オートクレー
ブの加熱温度以下であることが好ましい。この代表的な
ものとしては、ポリエチレン、塩化ビニル等が挙げられ
、この種の樹脂粉末を用いた場合には、オートクレーブ
時にケイ酸カルレウム生成と同時に溶融され一体化が図
られる。一方、２００℃以上の融点を有する、例えばテ
フロン、ポリアミド等の樹脂粉末を用いた場合には、を
−トラレープ後に、該樹脂粉末の各々の融点近傍まで再
に高温加熱処理を行うことにより、樹脂を溶融し一体化
を図ることができる。Also, 4 above! l! The powder is required to be one that does not thermally decompose when heated in an autoclave (usually at 180 to 200°C). Furthermore, the melting point of this resin powder is preferably below the heating temperature of the autoclave. Typical examples include polyethylene, vinyl chloride, etc. When this type of resin powder is used, it is melted and integrated at the same time as potassium silicate is produced during autoclaving. On the other hand, when using a resin powder such as Teflon or polyamide having a melting point of 200°C or higher, the resin powder is heated again at a high temperature to near the melting point of each of the resin powders after the resin is laminated. can be melted and integrated.
尚、上記１１ｍ粉末の代勢にパルプ状に加工した樹脂パ
ルプを用いてもよい。Incidentally, a resin pulp processed into a pulp form may be used instead of the above-mentioned 11m powder.
また、更に上記ケイｍ質及び石灰質とを含有する粉末Ｈ
１ｉ４に、繊維質原料あるいは無機質充填材等の補強材
料を均一に添加・混合することにより、得られた成形体
の耐熱性が向上すると共に、製造時に生ずる微細亀裂の
発生を防止するようにしている。Furthermore, a powder H containing the above-mentioned siliceous material and calcareous material
By uniformly adding and mixing reinforcing materials such as fibrous raw materials or inorganic fillers to 1i4, the heat resistance of the obtained molded product is improved and the generation of microcracks that occurs during manufacturing is prevented. There is.
ここで上記繊維質原料としては、例えばパルプ、レーヨ
ン等の有機繊維、あるいは耐アルカリ硝子繊維、炭素繊
維等の無機質繊維を使用することができ、そのｗＡＩＩ
ｋ長としては乾燥粉体に、均一に混合分散し得るものが
好ましく、好適には１５ｍ以下のものを使用するのがよ
い。また、繊維質原料の添加量としては、ケイ酸質と石
灰質とを含有する粉末原料に対して１〜５１！量％添加
するのが好ましい。Here, as the above-mentioned fibrous raw material, organic fibers such as pulp and rayon, or inorganic fibers such as alkali-resistant glass fibers and carbon fibers can be used, and the wAII
The k length is preferably one that can be uniformly mixed and dispersed in the dry powder, and is preferably 15 m or less. Moreover, the amount of the fibrous raw material added is 1 to 51! It is preferable to add % by amount.
また、上記無機質充填材としては、従来より使用されて
いる、例えば繊繍状ワラストナイトあるいはマイカ粉末
等を受用することができろ。Further, as the inorganic filler, conventionally used materials such as fibrous wollastonite or mica powder may be used.
これら１ａ維質原料あるいは無機質充填材を、ケイ酸質
と石灰質とを含有する粉末原料に添加・廃合するには、
均一に混合・分散状態を得るような公知の混合方法を用
いればよい。To add and discard these 1a fibrous raw materials or inorganic fillers to powder raw materials containing silicic acid and calcareous materials,
Any known mixing method that achieves a uniformly mixed/dispersed state may be used.
゛本発明でケイ酸質と石灰質とを含有する粉末原料と、
樹脂粉末との混合物を充填する際に、必要に応じて補強
部材を内包するようにしてもよい。この補強部材とは、
成形用型枠にあらかじめ配設させておくか、あるいは乾
燥混合物を充填する際に順次配設するものであり、例え
ば鉄、ステンレススチール、真ちゅう等の金属性の線状
体あるいは耐アルカリ硝子繊維、炭素繊維等の長さ約２
０〜３０■以上の連続的な長繊維を挙げろことができる
。゛In the present invention, a powder raw material containing silicic acid and calcareous material,
When filling the mixture with resin powder, a reinforcing member may be included as necessary. What is this reinforcing member?
It is either placed in advance in the molding frame, or placed sequentially when filling the dry mixture. Length of carbon fiber, etc. approximately 2
Continuous long fibers of 0 to 30 cm or more can be mentioned.
また、この補強部材を設ける場合、平面網目状に形成し
たものを、製造する板厚に応じて単一層あるいは複数の
層に設けろようにしてもよく、又、板厚に応じて立体網
目状に成形したものを適宜配設するようにしてもよい。In addition, when providing this reinforcing member, it may be formed into a planar mesh shape and may be provided in a single layer or multiple layers depending on the thickness of the board to be manufactured, or it may be formed into a three-dimensional mesh shape depending on the board thickness. A molded product may be placed as appropriate.
またこの補強部材を型枠内に配する方法としては、大別
して２つの方法を挙げることができる。Furthermore, methods for arranging this reinforcing member within the formwork can be broadly classified into two methods.
■ 第１の方法として、成形用型枠に上述しｔコ平面状
又は立体的な網目状成形補強部材を固定し、均一に混合
した粉末原料を投入して充填する方法。(1) The first method is to fix the above-mentioned planar or three-dimensional mesh-shaped reinforcing member to a molding mold, and charge it with uniformly mixed powder raw materials.
■ 第２の方法として、先ず、所定量の均一に混合した
粉末原料の一部を、成形用型枠内に投入し、この投入し
た粉末原料の上に、例えば格子状に組み立てた線状体等
の補強部材を置き、更にその上に残った粉末原料を投入
充填する方法。■ As a second method, first, a predetermined amount of a uniformly mixed powder raw material is charged into a forming mold, and on top of this charged powder raw material, a linear body is assembled in a lattice shape, for example. A method of placing a reinforcing member such as, and then charging and filling the remaining powder raw material on top of the reinforcing member.
さらに、補強部材として、線状体によって成形したもの
９外に、例えばモルタル下地等に使用されろ金属板を網
目状に成形したエキスバンドメタルラスあるいは金属板
に多数の穴を設けたものを使用することができる。Furthermore, as a reinforcing member, in addition to those formed from linear bodies9, for example, an expanded metal lath formed from a metal plate formed into a mesh shape, which is used as a mortar base, or a metal plate with many holes provided therein can be used. be able to.
この補強部材は、粉体混合物の充填が困難とならないよ
うに、あるいはシート状の場合には層状剥離が起らない
ように、目開きは５閣程度以上としたものが好ましい。This reinforcing member preferably has a mesh opening of about 5 squares or more so that filling with the powder mixture is not difficult, or when it is in the form of a sheet, so that delamination does not occur.
この成形用型枠への粉末原料の投入は、公知の、例えば
バイブレータ等によって振動を加えることにより均一に
充填することができる。The powder raw material can be charged uniformly into the mold by applying vibration using a known method such as a vibrator.
上記成形用型枠としては、高温高圧水蒸気において繰返
し使用できる公知のものを用いればよく、例えばステン
レス製のものが耐腐食性の点から好ましい。またこの成
形用型枠の内部表面に例えばポリテトラプルオロエチレ
ン（商品名；テフロン）を施して、脱型がより容易とな
るようにすることも可能である。As the above-mentioned molding mold, any known mold that can be used repeatedly in high-temperature, high-pressure steam may be used, and for example, a mold made of stainless steel is preferable from the viewpoint of corrosion resistance. It is also possible to coat the inner surface of the molding frame with, for example, polytetrafluoroethylene (trade name: Teflon) to make demolding easier.
更に、成形用型枠の内表面にあらかじめ凹凸模様を施し
ておくことにより、成形体に所望する凹凸模様をつける
ことが可能となる。Furthermore, by forming an uneven pattern on the inner surface of the molding frame in advance, it becomes possible to provide the molded article with a desired uneven pattern.
上述したように、ケイ酸質と石灰質とを原料とする粉末
原料に樹脂粉末を添加した粉末乾燥状態の混合物を、成
形用型枠に入れ、周知の所定のオートクレーブで、高温
高圧の水ｓｇＫ下で所定の反応条件にて、所望するケイ
酸カルシウム水和物を生成させることができる。As mentioned above, a powdered dry mixture in which resin powder is added to powdered raw materials made of silicic acid and calcareous materials is placed in a mold for molding, and heated under high temperature and high pressure water sgK in a well-known predetermined autoclave. A desired calcium silicate hydrate can be produced under predetermined reaction conditions.
上記反応条件としては、大別して二通りのものを挙げる
ことができる。The above reaction conditions can be broadly classified into two types.
■ 第１の反応条件として、トバモライト系ケイ酸カル
シウム水和物（５Ｃａ Ｏ６Ｓ ’ Ｏ＊ ５Ｈ２０）
を生成させる場合（主として建材用、Ｎ４熱濃度６５０
℃）には、Ｃａ０ＺＳ１０□モル比を約０．８とし、１
８０℃（約１０ｋｇ／ｃｄ）の蒸気圧下にて８〜１２時
間反応させるのが好ましい。■ As the first reaction condition, tobermorite-based calcium silicate hydrate (5CaO6S'O*5H20)
(mainly for building materials, N4 heat concentration 650
℃), the Ca0ZS10□ molar ratio was set to about 0.8, and 1
Preferably, the reaction is carried out under a vapor pressure of 80° C. (approximately 10 kg/cd) for 8 to 12 hours.
■ 第２の反応条件として、ゾノトライト系ケイ酸カル
シウム水和物（６Ｃａ０・６ＳｉＯ，−Ｈ，０）を生成
させる場合（主として高温耐火断熱材用；耐熱温度１０
００℃）には、Ｃａ Ｏ／Ｓ ＋ Ｏ＊モル比を約１と
し、２００℃（約１５ｋｇ／ｃｄ）の蒸気圧下にて１０
〜１５時間反応させるのが好ましい。■ As a second reaction condition, when producing xonotrite-based calcium silicate hydrate (6Ca0.6SiO,-H,0) (mainly for high-temperature refractory insulation materials; heat resistant temperature 10
00℃), the Ca O/S + O* molar ratio was set to about 1, and 10
It is preferable to react for 15 hours.
このようにして得られる樹脂粉末を含有するケイ酸カル
シウム質成形体は、ケイ酸質原料及び石灰質原料の混合
物と、ＩＩＩ！！粉末とが一体となるため、すぐれた加
工性を有し、しかも、充分な耐熱性、断熱保温性２強度
、耐衝撃性を有することとなり、例えば耐火断熱材料、
各種建築材料等に用いて好適である。The calcium silicate molded body containing the resin powder thus obtained is a mixture of a silicic acid raw material and a calcareous raw material, and III! ! Because it is integrated with powder, it has excellent processability, and also has sufficient heat resistance, heat insulation and heat retention strength, and impact resistance.For example, it can be used as a fireproof insulation material,
Suitable for use in various building materials, etc.
く実 施 例〉 息下、本発明の＊施済を詳細に説明する。Example of implementation The implementation of the present invention will now be explained in detail.
珪砂２消石灰Ｉワラストナイト及び樹脂粉末を第１表に
示す通り配合（ＣａＯ／ＳｉＯモル比１．０）ｌ、、水
を加えずに混合した。この混合物を３０Ｘ１００Ｘ３０
０＋ｍの型枠に充填し、型枠ごと２００℃−１５時間の
条件でオートクレーブ養生を行い、ゾノトライト系のケ
イ酸カルシウム質成形体を得た（実施例１〜３）。Silica sand 2 slaked lime I wollastonite and resin powder were mixed as shown in Table 1 (CaO/SiO molar ratio 1.0) without adding water. This mixture is 30X100X30
The mixture was filled into a 0+m mold, and the mold was cured in an autoclave at 200° C. for 15 hours to obtain a xonotrite calcium silicate molded product (Examples 1 to 3).
更に樹脂粉末としてテフロンを用いた場合には、オート
クレーブ養生後、３５０℃で３０分間熱処理を施した（
実施例４〜６）。Furthermore, when Teflon was used as the resin powder, heat treatment was performed at 350°C for 30 minutes after autoclave curing (
Examples 4-6).
得られた成形体を用い、曲げ強度、加熱収縮、加工性２
発塵性について試験した。Using the obtained molded body, bending strength, heat shrinkage, workability 2
Dust generation was tested.
く比 較 例〉
比較例として、樹脂粉末を加えないで実施例と同様に操
作した。Comparative Example> As a comparative example, the same procedure as in the example was carried out without adding resin powder.
これらの結果を第１表に示す。These results are shown in Table 1.
比較例に比べ、曲げ強度、加工性２発喜性共に優れてい
た。Compared to the comparative example, both bending strength and workability were excellent.
〈発明の効果〉
以上、実施例と共に詳しく述べたように、本発明によれ
ば、４１１！Ｉ！Ｉ粉末を添加したので高強度で加工性
が高く且つ粉塵等の発生しないケイ酸カルシウム質成形
体を乾式合成法で得ることができるという効果を奏する
。<Effects of the Invention> As described above in detail along with the embodiments, according to the present invention, 411! I! Since the I powder is added, it is possible to obtain a calcium silicate molded body with high strength, high workability, and no generation of dust by a dry synthesis method.
Claims (1)
状態で水を加えることなく均一に混合し、その後高温高
圧水蒸気下で反応硬化させるケイ酸カルシウム質成形体
の製造方法において、 上記粉末原料の一部に樹脂粉末を添加する ことを特徴とするケイ酸カルシウム質成形体の製造方法
。 ２）請求項１記載のケイ酸カルシウム質成形体の製造方
法において、 上記樹脂粉末の添加量が粉末原料に対して１〜４０重量
％であることを特徴とするケイ酸カルシウム質成形体の
製造方法。 ３）請求項１又は２記載のケイ酸カルシウム質成形体の
製造方法において、 上記高温高圧水蒸気下で反応硬化させた後、更に高温加
熱処理を施すことを特徴とするケイ酸カルシウム質成形
体の製造方法。[Claims] 1) A calcium silicate molded body in which powder raw materials containing silicic acid and calcareous materials are uniformly mixed in a powder state without adding water, and then reacted and hardened under high temperature and high pressure steam. A method for producing a calcium silicate molded body, characterized in that a resin powder is added to a part of the powder raw material. 2) The method for producing a calcium silicate molded body according to claim 1, wherein the amount of the resin powder added is 1 to 40% by weight based on the powder raw material. Method. 3) The method for producing a calcium silicate molded body according to claim 1 or 2, wherein the calcium silicate molded body is further subjected to a high temperature heat treatment after being reacted and cured under the above-mentioned high temperature and high pressure steam. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1100263A JP2768492B2 (en) | 1989-04-21 | 1989-04-21 | Method for producing calcium silicate molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1100263A JP2768492B2 (en) | 1989-04-21 | 1989-04-21 | Method for producing calcium silicate molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02279550A true JPH02279550A (en) | 1990-11-15 |
| JP2768492B2 JP2768492B2 (en) | 1998-06-25 |
Family
ID=14269319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1100263A Expired - Fee Related JP2768492B2 (en) | 1989-04-21 | 1989-04-21 | Method for producing calcium silicate molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2768492B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6125672A (en) * | 1984-07-16 | 1986-02-04 | Toyota Motor Corp | Method for coating |
| JPS645934A (en) * | 1987-06-30 | 1989-01-10 | Mitsubishi Mining & Cement Co | Inorganic hardened body having superior frost damage resistance and production thereof |
-
1989
- 1989-04-21 JP JP1100263A patent/JP2768492B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6125672A (en) * | 1984-07-16 | 1986-02-04 | Toyota Motor Corp | Method for coating |
| JPS645934A (en) * | 1987-06-30 | 1989-01-10 | Mitsubishi Mining & Cement Co | Inorganic hardened body having superior frost damage resistance and production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2768492B2 (en) | 1998-06-25 |
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