JPH0290930A - Dissolving of rubberlike substance - Google Patents
Dissolving of rubberlike substanceInfo
- Publication number
- JPH0290930A JPH0290930A JP23979888A JP23979888A JPH0290930A JP H0290930 A JPH0290930 A JP H0290930A JP 23979888 A JP23979888 A JP 23979888A JP 23979888 A JP23979888 A JP 23979888A JP H0290930 A JPH0290930 A JP H0290930A
- Authority
- JP
- Japan
- Prior art keywords
- substance
- temperature
- glass transition
- transition temperature
- liquefied gas
- 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
- 239000000126 substance Substances 0.000 title claims abstract description 31
- 230000009477 glass transition Effects 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000002904 solvent Substances 0.000 claims abstract description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 4
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 238000004090 dissolution Methods 0.000 claims description 13
- 238000010298 pulverizing process Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 14
- 238000000227 grinding Methods 0.000 abstract description 2
- 239000010419 fine particle Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 description 7
- 239000005060 rubber Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000011978 dissolution method Methods 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ゴム状物質やプラスチック等の高分子物質を
、溶剤等により溶解する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for dissolving polymeric substances such as rubbery substances and plastics using a solvent or the like.
ｃｌｔ来、ゴム状物質の溶解は常温で、ナイフ状の粉砕
機によりゴム状物質を切断しながら粉砕したのち溶剤に
より溶解している。Since CLT, the rubber-like substance is dissolved at room temperature by cutting and pulverizing the rubber-like substance with a knife-shaped pulverizer, and then dissolving it in a solvent.
ところで従来の前記方法では、粉砕後のゴム状物質の粒
子形状、特に粒径が不均一となり、小さい粒径のものか
ら比較的大きな粒径のものにまで及んでいた。However, in the conventional method, the particle shape, particularly the particle size, of the rubber-like material after pulverization is non-uniform, ranging from small particle sizes to relatively large particle sizes.
そのためゴム状物質を撹拌しながら、溶剤等に溶解する
後処理工程の操作では、溶解完了までの時間に与えるゴ
ム粒径の影害は非常に大きく、ゴム溶解時間に莫大な時
間を要する不具合があった。Therefore, in the post-processing process where a rubbery substance is dissolved in a solvent while being stirred, the rubber particle size has a very large effect on the time it takes to complete dissolution, and there is a problem that it takes a huge amount of time to dissolve the rubber. there were.
本発明は上記不具合を解決し粉砕後の粒子径及び形状を
はソ均一にし、また微細化し溶剤等への溶解時間を非常
に短縮できる新たな溶解方法を提供しようとするもので
ある。The present invention aims to solve the above-mentioned problems and to provide a new dissolution method that can make the particle diameter and shape after pulverization uniform, make the particles finer, and greatly shorten the dissolution time in a solvent or the like.
このため本発明のゴム状物質の溶解方法は、ゴム状物質
を液体窒素または液化炭酸ガス等の液化ガスを用いてガ
ラス転移τ詰度以下の温度まで冷却した後、ガラス転移
温度以下に保冷するため液化ガスを補給しながら該ゴム
状物質を粉砕機により粉砕し、その後粉砕されたゴム状
物質を溶剤を混入した撹拌溶解槽内に供給して撹拌混合
しながら溶解することを特徴としている。Therefore, the method for dissolving a rubbery substance of the present invention involves cooling the rubbery substance using liquid nitrogen or liquefied gas such as liquefied carbon dioxide to a temperature below the glass transition τ packing temperature, and then keeping it cool below the glass transition temperature. Therefore, the rubber-like substance is pulverized by a pulverizer while supplying liquefied gas, and then the pulverized rubber-like substance is fed into a stirring dissolution tank containing a solvent and dissolved while stirring and mixing.
このように本発明のゴム状物質の溶解方法によれば、ゴ
ム状物質は粉砕機により粉砕される以前に、あらかじめ
冷凍室内で液化ガスによりゴム状物質のガラス転移温度
以下に冷却されたのちに粉砕機に供給され均−粉粒径に
微細に粉砕され、この粉砕時粉砕に伴なって発生する熱
を冷却するため粉砕部にゴム状物質のガラス転移温度以
下の保冷のために液化ガスを補給しながら粉砕し、しか
るのち撹拌溶解槽に供給して溶剤等によりゴム状物質を
溶解することにより溶解時間を著しく短縮するものであ
る。As described above, according to the method for dissolving a rubbery substance of the present invention, the rubbery substance is cooled to below the glass transition temperature of the rubbery substance with liquefied gas in a freezing chamber before being crushed by a crusher. The powder is supplied to a pulverizer and is finely pulverized to a uniform particle size. In order to cool the heat generated during pulverization, liquefied gas is supplied to the pulverizer to keep the rubber-like material below the glass transition temperature. The dissolution time is significantly shortened by pulverizing the material while replenishing it, and then supplying it to a stirring dissolution tank and dissolving the rubbery substance with a solvent or the like.
以下図面第１図により本発明の一実施例について説明す
ると、第１図は本発明溶解方法の工程説明図であり、図
において、被処理材であるゴム状物質１は、粉砕機４で
粉砕される前にあらかじめ、冷凍室２で液体窒素または
液化炭酸ガス等の液化ガス３により、ゴム状物質１のガ
ラス転移温度以下に冷却される。ガラス転移温度以下に
冷却されたゴム状物質１は、粉砕機４に供給され、粉砕
されながら、溶解タンク５に投入される。粉砕機４には
、粉砕する際に熱が発生するためゴム状物質１のガラス
転移温ｒｉ以上にならないようにするため液化ガス３を
供給し、保冷する必要がある。粉砕機４により粉砕され
たゴム状物質は溶剤等の混入された溶解タンク５に供給
されて、溶剤等６と混合撹拌され溶解する。An embodiment of the present invention will be described below with reference to FIG. 1. FIG. 1 is a process explanatory diagram of the melting method of the present invention. The rubber-like material 1 is previously cooled to a temperature below the glass transition temperature of the rubber-like material 1 in a freezing chamber 2 using a liquefied gas 3 such as liquid nitrogen or liquefied carbon dioxide. The rubber-like material 1 cooled to below the glass transition temperature is supplied to a crusher 4 and charged into a melting tank 5 while being crushed. Since heat is generated during crushing, it is necessary to supply the liquefied gas 3 to the crusher 4 and keep it cool so that the temperature does not exceed the glass transition temperature ri of the rubbery substance 1. The rubbery substance pulverized by the pulverizer 4 is supplied to a dissolution tank 5 containing a solvent, etc., and is mixed with a solvent 6, stirred, and dissolved.
次き゛に従来の常温による粉砕後の溶解方法と本発明方
法による溶解とを比較すると以下の通りである。Next, a comparison between the conventional dissolution method after pulverization at room temperature and the dissolution method according to the present invention is as follows.
従来の常温粉砕機で切断粉砕したブタジェンゴムｋｌ
０ｗｔ％の割合でスチレンモノマー中に溶解するテスト
を試みた。粉砕後のゴム形状は不均一であり粒径も２〜
４５ＩＩＩ＋１１と幅広がった。Butadiene rubber kl cut and crushed with a conventional room-temperature crusher
A test was carried out in which it was dissolved in styrene monomer at a ratio of 0 wt%. The rubber shape after crushing is non-uniform and the particle size is 2~2~
The range has expanded to 45III+11.
ゴムの溶解速度は、液の屈折率を測定しながら追跡した
ところ５ ｗｔ％までの時間は約４時間、９、５ ｗｔ
％までの時間は約７時間要し、完全溶解までは約９．５
時間必要であった。The dissolution rate of the rubber was tracked while measuring the refractive index of the liquid, and it took about 4 hours to reach 5 wt%.
It takes about 7 hours to reach %, and it takes about 9.5 hours to completely dissolve.
It took time.
これに対し本発明方法では上記の方法と同一条件で溶解
速度を測定した。ただし、ゴムの粉砕は冷凍粉砕機仕様
とし、粉砕前に液体窒素にゴムを浸し、ガラス転移温度
以下に冷却凍結させた。また粉砕中にも、ガラス転移温
度以下を保持するように粉砕機にも液体窒素を補給した
。In contrast, in the method of the present invention, the dissolution rate was measured under the same conditions as the above method. However, the rubber was crushed using a cryogenic crusher, and before crushing, the rubber was soaked in liquid nitrogen and cooled to below the glass transition temperature. During the grinding, liquid nitrogen was also supplied to the grinder to maintain the temperature below the glass transition temperature.
粉砕後のゴム形状は割と均一で粒径もすべて４朋以下で
あり、溶解時間も５ ｗｔ％まで１５時間、９．５ｗｔ
％捷で２時間、完全溶解まで２．５時間と短縮された。The shape of the rubber after pulverization is relatively uniform, all particle sizes are less than 4 mm, and the dissolution time is 15 hours to 5 wt%, 9.5 wt%.
% straining took 2 hours, and complete dissolution took 2.5 hours.
以上本発明の一実施例について繍々説明したが、本発明
は上記実施例に限定されることなく、本発明の技術思想
の範囲内で種々変更し得るものである。Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and can be modified in various ways within the scope of the technical idea of the present invention.
以上述べたように本発明によるゴム状物質の溶解方法に
よれば、粉砕後のゴム状物質の形状及び粒径を比絞的均
−に捷た微細化することが可能であり、更に溶剤等への
溶解時間が非常に短縮されるため溶解槽のコンパクト化
や、作業効率の著しい改善を計る効果を奏するものであ
る。As described above, according to the method for dissolving a rubbery substance according to the present invention, it is possible to reduce the shape and particle size of the rubbery substance after pulverization by uniformly crushing the rubbery substance. Since the dissolution time is greatly shortened, the dissolution tank can be made more compact and work efficiency can be significantly improved.
第１図は本発明の一実施態例を示すゴム状物質の溶解方
法のフローを示す説明図である。
１・・・ゴム状物質、 ２・・冷凍室、３・・液化ガ
ス、 ４・・・粉砕機、５・・・溶解タンク、 ６
・溶剤。FIG. 1 is an explanatory diagram showing a flow of a method for dissolving a rubber-like substance according to an embodiment of the present invention. 1... Rubbery substance, 2... Freezing room, 3... Liquefied gas, 4... Pulverizer, 5... Melting tank, 6
·solvent.
Claims (1)
化ガスを用いてガラス転移温度以下の温度まで冷却した
後、ガラス転移温度以下に保冷するため液化ガスを補給
しながら該ゴム状物質粉砕機により粉砕し、その後粉砕
されたゴム状物質を溶剤を混入した撹拌溶解槽内に供給
して撹拌混合しながら溶解することを特徴としたゴム状
物質の溶解方法。(1) After cooling the rubbery substance to a temperature below the glass transition temperature using liquid nitrogen or liquefied gas such as liquefied carbon dioxide, crush the rubbery substance while replenishing the liquefied gas to keep it cool below the glass transition temperature. 1. A method for dissolving a rubber-like substance, which comprises pulverizing the substance in a machine, and then supplying the pulverized rubber-like substance into a stirring dissolution tank containing a solvent and dissolving the substance while stirring and mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23979888A JPH0290930A (en) | 1988-09-27 | 1988-09-27 | Dissolving of rubberlike substance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23979888A JPH0290930A (en) | 1988-09-27 | 1988-09-27 | Dissolving of rubberlike substance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0290930A true JPH0290930A (en) | 1990-03-30 |
Family
ID=17050026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23979888A Pending JPH0290930A (en) | 1988-09-27 | 1988-09-27 | Dissolving of rubberlike substance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0290930A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5879596A (en) * | 1996-11-13 | 1999-03-09 | E. I. Du Pont De Nemours And Company | Low temperature process for making polyurethaneureas |
| WO2011089974A1 (en) * | 2010-01-21 | 2011-07-28 | 日東電工株式会社 | Rubber solution production method and rubber solution production device |
-
1988
- 1988-09-27 JP JP23979888A patent/JPH0290930A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5879596A (en) * | 1996-11-13 | 1999-03-09 | E. I. Du Pont De Nemours And Company | Low temperature process for making polyurethaneureas |
| WO2011089974A1 (en) * | 2010-01-21 | 2011-07-28 | 日東電工株式会社 | Rubber solution production method and rubber solution production device |
| JPWO2011089974A1 (en) * | 2010-01-21 | 2013-05-23 | 日東電工株式会社 | Rubber solution manufacturing method and rubber solution manufacturing apparatus |
| JP5608924B2 (en) * | 2010-01-21 | 2014-10-22 | 日東電工株式会社 | Rubber solution manufacturing method and rubber solution manufacturing apparatus |
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