JPH02289435A - Production of foam glass - Google Patents
Production of foam glassInfo
- Publication number
- JPH02289435A JPH02289435A JP10962789A JP10962789A JPH02289435A JP H02289435 A JPH02289435 A JP H02289435A JP 10962789 A JP10962789 A JP 10962789A JP 10962789 A JP10962789 A JP 10962789A JP H02289435 A JPH02289435 A JP H02289435A
- Authority
- JP
- Japan
- Prior art keywords
- gel
- sol
- foam glass
- dispersion
- prepare
- 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
- 239000011494 foam glass Substances 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000000499 gel Substances 0.000 claims abstract description 11
- 239000011521 glass Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000005245 sintering Methods 0.000 claims abstract description 7
- 239000011240 wet gel Substances 0.000 claims abstract description 7
- 150000004703 alkoxides Chemical class 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 3
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- 239000010419 fine particle Substances 0.000 claims description 4
- 238000003980 solgel method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 abstract description 6
- 239000006185 dispersion Substances 0.000 abstract description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004620 low density foam Substances 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000004604 Blowing Agent Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000004017 vitrification Methods 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/22—Glass ; Devitrified glass
- C04B14/24—Glass ; Devitrified glass porous, e.g. foamed glass
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、低温や極低温での断熱材として優れている泡
ガラスのゾル−ゲル法による製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing foam glass, which is excellent as a heat insulating material at low or extremely low temperatures, by a sol-gel method.
［従来の技術］
従来の泡ガラスの製造方法は、ガラス微粉末に炭酸カル
シウムあるいはカーボンを発泡剤として用い、これに発
泡助剤をさらに加えて混合し、型枠に入れて８５０℃程
度に加熱し発泡させ、これを徐冷した後、ブロック状に
切断して製品とするものである。[Prior art] The conventional method for manufacturing foam glass is to use calcium carbonate or carbon as a foaming agent in fine glass powder, add a foaming aid to the mixture, mix it, place it in a mold, and heat it to about 850°C. After foaming and slow cooling, the product is cut into blocks.
［発明が解決しようとする課ｆｆｌ］
しかし、前述の従来技術では、発泡剤及び発泡助剤を使
用するためこれらの成分がガラス中に残存し用途によっ
ては使用できない場合もあり、応用範囲が限定されてし
まうという問題点を有する。そこで本発明の目的は、発
泡剤及び発泡助剤を用いることなく泡ガラスを製造する
方法を提供するところにある。[Issue to be solved by the inventionffl] However, in the above-mentioned conventional technology, since a blowing agent and a blowing aid are used, these components may remain in the glass and may not be usable depending on the purpose, which limits the scope of application. The problem is that the Therefore, an object of the present invention is to provide a method for producing foam glass without using a blowing agent or a blowing aid.
［課題を解決するだめの手段］
本発明のゾル−ゲル法による泡ガラスの製造方法ハ、金
属アルコキシドおよび金属酸化物の微粒子を主原料とし
て目的Ｊラス成分組成の液状ゾルを調製し該液状ゾルを
所望形状の密閉容器中にてゲル化させ、ウェットゲルを
作製した後、該ウェットゲルを、乾燥、焼結などの熱処
理によりガラス化するゾル−ゲル法による製造方法にお
いて、ゲルの焼結な昇温速度１０℃／ｈｒ以上で行なう
ことを特徴とする。[Means for Solving the Problem] Method for producing foam glass by the sol-gel method of the present invention C. Prepare a liquid sol having the desired glass component composition using metal alkoxide and metal oxide fine particles as main raw materials. In a manufacturing method using the sol-gel method, in which a wet gel is produced by gelling it in a sealed container of a desired shape, the wet gel is vitrified by heat treatment such as drying and sintering. It is characterized in that it is carried out at a temperature increase rate of 10° C./hr or more.
［作用］
本発明は、細孔中に水、空気などを含有する多孔性のゲ
ルの焼結を短時間で行な５こと罠より、表面層が緻密化
した時に、内部に、水、空気などが取り込まれた状態と
なる。これを更に加熱しガラス化すると低密度の泡ガラ
スが作製できるものである。[Function] The present invention is capable of sintering a porous gel containing water, air, etc. in its pores in a short time. etc. will be imported. When this is further heated and vitrified, low-density foam glass can be produced.
［実施例］
エチルシリケート、エタノール、水、アンモニア水（２
９％）をモル比で、１ニア、６：４：［１０８の割合に
なるように混合し、約３時間攪拌した後、室温にて静置
し、粒子を成長、熟成させた。[Example] Ethyl silicate, ethanol, water, aqueous ammonia (2
9%) were mixed at a molar ratio of 1:1, 6:4:[108], stirred for about 3 hours, and then allowed to stand at room temperature to grow and ripen the particles.
このあと減圧濃縮することＫより、分散性の良好なシリ
カ微粒子分散液を調製した。This was then concentrated under reduced pressure to prepare a silica fine particle dispersion with good dispersibility.
次に、先のエチルシリケートの１／４ｉのエチルシリケ
ートを用い、重量比で１：１になるように０．０２規定
の塩酸を加え、氷冷しながら約２時間攪拌することによ
り加水分解溶液を調製した。Next, using ethyl silicate of 1/4i of the previous ethyl silicate, add 0.02N hydrochloric acid so that the weight ratio is 1:1, and stir for about 2 hours while cooling with ice to prepare a hydrolyzed solution. was prepared.
ここで前記シリカ微粒子分散液のＰＨ値を２規定の塩酸
を添加し４．５に調整した後、エチルシリケートの加水
分解溶液を混合し、均質な液状ゾルになるまで充分に攪
拌した。その後、該液状ゾルＫＱ、２規定のアンモニア
水を添加し、ｐＨ値を５．０に調整し、直径２０口の円
筒状の型容器に１０ｍの高さまで注入した。さらに蓋を
して密閉状態でゲル化させウェットゲルを作製した。該
ウェットゲルを６日間静置した後、乾燥容器に移し、７
０℃に保持された恒温乾燥機にて乾燥し、はぼ１０日間
で乾燥を終了し、直径１４Ｌ：Ｔｎ＊高さ７６ｎの白色
ゲルが得られた。Here, the pH value of the silica fine particle dispersion was adjusted to 4.5 by adding 2N hydrochloric acid, and then a hydrolyzed solution of ethyl silicate was mixed and stirred sufficiently until a homogeneous liquid sol was obtained. Thereafter, the liquid sol KQ and 2N aqueous ammonia were added, the pH value was adjusted to 5.0, and the mixture was poured into a cylindrical mold container with a diameter of 20 ports to a height of 10 m. Furthermore, the container was covered with a lid and allowed to gel in an airtight state to produce a wet gel. After allowing the wet gel to stand for 6 days, it was transferred to a dry container and dried for 7 days.
It was dried in a constant temperature dryer kept at 0°C, and the drying was completed in about 10 days, yielding a white gel with a diameter of 14L:Tn*height of 76n.
得られたゲルを５ルヘｒ、１０阪へｒ’５［］°い１０
３種類の昇温速度で加熱焼結しガラス化させたところ
５℃／ｉの場合、発泡せず泡ガラスが作製できなかった
。１０″’０／’ｈｒの昇温速度で加熱焼結し得られた
ガラス体は内部に無数の気泡を含む直径３０ ｃｍ 、
高さ１５ｚの極めて低密度な泡ガラスであり、Ｓ１０．
以外の成分は特に検出されなかった。Transfer the obtained gel to 5° and 10° r'5 []°10
Vitrification by heating and sintering at three different heating rates
In the case of 5° C./i, foaming did not occur and foam glass could not be produced. The glass body obtained by heating and sintering at a heating rate of 10'''0/'hr has a diameter of 30 cm and contains numerous bubbles inside.
It is extremely low density foam glass with a height of 15z and S10.
No other components were detected.
［発明の効果］
以上のように本発明の方法によれば、発泡剤及び発泡助
剤を用いることなく泡ガラスを製造することが容易であ
る。[Effects of the Invention] As described above, according to the method of the present invention, it is easy to produce foam glass without using a blowing agent or a blowing aid.
従って、今まで以上に応用範囲が広がるものと考える。Therefore, we believe that the range of applications will be expanded more than ever before.
またゾル調製工程において、！３．Ｔｉ、ＧｅｔＨａ、
Ｏａ、Ｌｉ、Ａｔ、Ｔｓ、Ｚｒ、Ｏｅ。Also, in the sol preparation process! 3. Ti, GetHa,
Oa, Li, At, Ts, Zr, Oe.
Ｎｄ、Ｏｒなどの元素を添加することも可能であり、多
重類の多成分系ガラスおよび既存組成にはないガラスの
製造も容易である。It is also possible to add elements such as Nd and Or, and it is easy to produce multi-component glasses and glasses that do not have existing compositions.
Claims (1)
原料として目的ガラス成分組成の液状ゾルを調製し該液
状ゾルを所望形状の密閉容器中にてゲル化させ、ウェッ
トゲルを作製した後、該ウェットゲルを、乾燥、焼結な
どの熱処理によりガラス化するゾル−ゲル法による製造
方法において、ゲルの焼結を昇温速度１０℃／ｈｒ以上
で行なうことを特徴とする泡ガラスの製造方法。(1) Prepare a liquid sol with the desired glass component composition using metal alkoxide and metal oxide fine particles as main raw materials, and gel the liquid sol in a closed container of a desired shape to produce a wet gel. 1. A method for producing foam glass using a sol-gel method in which a gel is vitrified by heat treatment such as drying and sintering, the method comprising sintering the gel at a heating rate of 10° C./hr or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10962789A JPH02289435A (en) | 1989-04-28 | 1989-04-28 | Production of foam glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10962789A JPH02289435A (en) | 1989-04-28 | 1989-04-28 | Production of foam glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02289435A true JPH02289435A (en) | 1990-11-29 |
Family
ID=14515079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10962789A Pending JPH02289435A (en) | 1989-04-28 | 1989-04-28 | Production of foam glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02289435A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020033370A (en) * | 2000-10-31 | 2002-05-06 | 최낙명, 홍석범 | Fire-Resistant Expanded Material From Sand and Method of Manufacture |
-
1989
- 1989-04-28 JP JP10962789A patent/JPH02289435A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020033370A (en) * | 2000-10-31 | 2002-05-06 | 최낙명, 홍석범 | Fire-Resistant Expanded Material From Sand and Method of Manufacture |
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