JPH03205334A - Calcined gypsum slurry put in airtight container - Google Patents
Calcined gypsum slurry put in airtight containerInfo
- Publication number
- JPH03205334A JPH03205334A JP34369089A JP34369089A JPH03205334A JP H03205334 A JPH03205334 A JP H03205334A JP 34369089 A JP34369089 A JP 34369089A JP 34369089 A JP34369089 A JP 34369089A JP H03205334 A JPH03205334 A JP H03205334A
- Authority
- JP
- Japan
- Prior art keywords
- calcined gypsum
- slurry
- water
- airtight container
- mixed
- 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
- 239000010440 gypsum Substances 0.000 title claims abstract description 39
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 39
- 239000002002 slurry Substances 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000006703 hydration reaction Methods 0.000 claims abstract description 15
- 239000003960 organic solvent Substances 0.000 claims abstract description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 235000019441 ethanol Nutrition 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は用途に応じ即座に使用できる気密容器入り焼石
膏スラリーに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a calcined gypsum slurry packed in an airtight container that can be used immediately depending on the application.
（従来の技術）
焼石膏と水を混練したスラリーは短時間に二水石膏とな
って強固な硬化物となる特性を利用して陶磁器用、美術
用、歯科用などの型材料のほか外科用ギプスなどの医療
用その他に広く用いられている。(Prior art) Slurry made by kneading calcined gypsum and water turns into dihydrate gypsum in a short time and becomes a strong hardened product, so it can be used as a mold material for ceramics, art, dentistry, etc., as well as for surgical purposes. It is widely used for medical purposes such as casts and other purposes.
（発明が解決しようとする課題）
ところが、焼石膏と水を混練したスラリーはその混水量
によって硬化する時間や硬化物の強度に差異があり、そ
のため、スラリーとする焼石膏の量と混水量は硬化物の
用途に応じて混線の都度計量しなければならないという
手数を要し、殊に歯科用の場合は１回の使用量が少ない
うえ幾回も改めて型をとることが多いために前記のよう
な計量は特に煩雑であって、何れにしても用途に応じた
石膏スラリーを即座に提供することは容易でないという
問題があった。(Problem to be solved by the invention) However, the curing time and strength of the cured product differ depending on the amount of mixed water in the slurry made by kneading calcined gypsum and water. Depending on the use of the cured product, it is time-consuming to measure each time there is a cross-wire, and especially in the case of dental use, the amount used per time is small and molds are often taken several times, so the above-mentioned Such measurement is particularly complicated, and there is a problem in that it is not easy to immediately provide a gypsum slurry suitable for the intended use.
（課題を解決するための手段）
本発明は前記のような問題点を解決するためになされた
気密容器入り焼石膏スラリーに関するものであって、焼
石膏と、該焼石膏をその水和反応によって所要の硬化を
行わせるに必要な所定混水量の水と、該焼石膏の水和反
応を遅緩させる揮発性且つ水溶性の有機溶剤を混和して
気密容器に密封状態に封入したことを特徴とするもので
ある。(Means for Solving the Problems) The present invention relates to a calcined gypsum slurry packed in an airtight container, which has been made to solve the above-mentioned problems, and relates to calcined gypsum slurry and a slurry of calcined gypsum that is produced by a hydration reaction of the calcined gypsum. It is characterized by mixing a predetermined amount of water necessary for the desired hardening with a volatile and water-soluble organic solvent that slows down the hydration reaction of the calcined gypsum, and sealing the mixture in an airtight container. That is.
焼石膏と水を混練したスラリーの水和反応後の硬化物の
強度は混水量が水和理論水量に近いほど大となり、混水
量が多くなるほど小となるものであるが、本発明におい
ては、焼石膏と混練する水の量を水和反応により硬化す
る焼石膏の硬化物の予定する強度に適応した所定混水量
とするものであって、そのため、この所定混水量は予め
石膏とともに正確に計量して決められるものである。さ
らに、本発明においては、前記所定混水量の水のほか焼
石膏の水和反応を遅緩させる揮発性且つ水溶性の有機溶
剤が混和される。しかして、この有機溶剤としてはメチ
ルアルコール、エチルアルコール、アセトンなどの常温
でも揮発するものが適当であって、このような有機溶剤
の１または２以上を前記焼石膏と所定混水量の水を混練
したスラリーに対し容量比で約１０〜５０％の範囲で混
和することによって容易に混溶してその使用量に応じス
ラリーの水和反応の遅緩を適当に調整することができる
ものである。そして、前記焼石膏と所定混水量の水と有
機溶剤を混和したスラリーは速やかに気密容器に密封状
態に封入して気密容器入り焼石膏スラリーとする。なお
、前記気密容器としては封入するスラリーが少量の場合
にはアルミチューブ、プラスチックチューブ、ワックス
加工紙箱などが使用上便宜であり、封入するスラリ一の
量が多い場合には金属罐、戒形プラスチック容器などが
適宜使用できる。The strength of a cured product after a hydration reaction of a slurry made by kneading calcined gypsum and water increases as the amount of mixed water approaches the theoretical hydration amount, and decreases as the amount of mixed water increases, but in the present invention, The amount of water to be kneaded with the calcined gypsum is set to a predetermined amount that is appropriate for the expected strength of the hardened calcined gypsum that hardens through a hydration reaction. Therefore, this predetermined amount of mixed water must be accurately measured together with the plaster in advance. It can be determined by Furthermore, in the present invention, in addition to the predetermined amount of water, a volatile and water-soluble organic solvent that slows down the hydration reaction of calcined gypsum is mixed. Therefore, suitable organic solvents are those that evaporate even at room temperature, such as methyl alcohol, ethyl alcohol, and acetone, and one or more of these organic solvents are mixed with the calcined gypsum and a predetermined amount of water. By mixing the slurry in an amount of about 10 to 50% by volume, the slurry can be easily mixed and the hydration reaction of the slurry can be adjusted appropriately depending on the amount used. Then, the slurry obtained by mixing the calcined gypsum, a predetermined amount of water, and an organic solvent is immediately sealed in an airtight container to obtain a calcined gypsum slurry in an airtight container. Note that when the amount of slurry to be sealed is small, aluminum tubes, plastic tubes, waxed paper boxes, etc. are convenient for use as the airtight container, and when the amount of slurry to be sealed is large, metal cans, sealed plastic containers, etc. Containers etc. can be used as appropriate.
このような気密容器入り焼石膏スラリーは密封状態に封
入したスラリーを必要とする際その気密容器を開封して
陶磁器用型或いは美術用型、歯科用型など用途に応じた
型に流し込めば、スラリーに混和されている焼石膏の水
和反応を遅緩させる揮発性且つ水溶性の有機溶剤が逐次
揮発して硬化するものであって、この場合、前記スラリ
ーは焼石膏が水和反応により所要の硬化を行うのに必要
な所定混水量の水と混練されたものであるため、得られ
る硬化物は各用途に適応した強度をもったものとなり、
また、用途に応じたスラリーの硬化時間は前記焼石膏の
水和反応を遅緩させる揮発性且つ水溶性の有機溶剤の使
用量を適当に変えることによって８周整できるものであ
る。なお、スラリーの硬化を特に早める必要が生じた場
合には、加温或いは送風によって前記有機溶剤の揮発を
促進させればよい。When the slurry is sealed in an airtight container, the slurry can be opened and poured into a mold for ceramics, art, dentistry, etc. depending on the purpose. A volatile and water-soluble organic solvent that slows down the hydration reaction of the calcined gypsum mixed in the slurry gradually evaporates and hardens. Because it is mixed with a predetermined amount of water necessary for curing, the resulting cured product has a strength suitable for each use.
Furthermore, the curing time of the slurry depending on the application can be adjusted by changing the amount of the volatile and water-soluble organic solvent used to slow down the hydration reaction of the calcined gypsum. Note that if it is necessary to accelerate the hardening of the slurry, the volatilization of the organic solvent may be accelerated by heating or blowing air.
（実施例）
α型焼石膏に対し所定混水量４０重量％の水を混練した
スラリーに焼石膏の水和反応を遅緩させる揮発性且つ水
溶性の有機溶剤として３０容量％のエチルアルコールを
混和し、これを即時アルξチューブに密封状態に封入し
た。この気密容器入り焼石膏スラリーは少量を頻度多く
使用する歯科用型材料として好適であった。(Example) 30% by volume of ethyl alcohol is mixed into a slurry of α-type calcined gypsum mixed with water at a predetermined amount of 40% by weight as a volatile and water-soluble organic solvent that slows down the hydration reaction of calcined gypsum. This was immediately sealed in an aluminum tube. This calcined gypsum slurry packed in an airtight container was suitable as a dental mold material that is frequently used in small amounts.
（発明の効果）
本発明は前記説明から明らかなように、焼石膏をスラリ
ーとする混水量を予定する焼石膏の硬化物の強度に適応
した所定混水量とするとともに焼石膏の水和反応を遅緩
させる揮発性且つ水溶性の有機溶剤を混和して硬化時間
の調整された焼石膏スラリーを気密容器入りとしたこと
によって用途別に即座に使用できる便宜な焼石膏スラリ
ーを提供できたものであって、従来煩雑な手数を必要と
した使用に際しての焼石膏と水の計量およびその混和の
必要が全くなく、また、従来みられた混水量や混和の不
均斉が生じないことによって性状の安定した硬化物が得
られるものであって、陶磁器用、美術用、歯科用などの
型を作製するのに特に有用なものである。(Effects of the Invention) As is clear from the above description, the present invention makes the amount of water mixed with calcined gypsum as a slurry a predetermined amount of water that is adapted to the strength of the intended cured product of calcined gypsum, and also controls the hydration reaction of calcined gypsum. By mixing a volatile and water-soluble organic solvent that slows down the hardening process and storing the slurry in an airtight container, it is possible to provide a convenient calcined gypsum slurry that can be used immediately for different purposes. Therefore, there is no need to measure and mix calcined gypsum and water during use, which conventionally required complicated steps, and the properties are stable because the amount of water mixed and the asymmetry of mixing do not occur. A cured product can be obtained, which is particularly useful for making molds for ceramics, art, dentistry, etc.
Claims (1)
を行わせるに必要な所定混水量の水と、該焼石膏の水和
反応を遅緩させる揮発性且つ水溶性の有機溶剤を混和し
て気密容器に密封状態に封入したことを特徴とする気密
容器入り焼石膏スラリー。Mixing calcined gypsum, a predetermined amount of water necessary to cause the calcined gypsum to undergo the required hardening through its hydration reaction, and a volatile and water-soluble organic solvent that slows down the hydration reaction of the calcined gypsum. A calcined gypsum slurry packed in an airtight container, characterized in that the slurry is sealed in an airtight container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34369089A JPH03205334A (en) | 1989-12-28 | 1989-12-28 | Calcined gypsum slurry put in airtight container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34369089A JPH03205334A (en) | 1989-12-28 | 1989-12-28 | Calcined gypsum slurry put in airtight container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03205334A true JPH03205334A (en) | 1991-09-06 |
Family
ID=18363499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34369089A Pending JPH03205334A (en) | 1989-12-28 | 1989-12-28 | Calcined gypsum slurry put in airtight container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03205334A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006125501A3 (en) * | 2005-05-25 | 2007-03-15 | Ici Plc | A coating composition |
-
1989
- 1989-12-28 JP JP34369089A patent/JPH03205334A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006125501A3 (en) * | 2005-05-25 | 2007-03-15 | Ici Plc | A coating composition |
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