書誌事項
- タイトル別名
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- Preparation of Fine Ammonium Perchlorate by Freeze-Drying.
- トウケツ カンソウホウ ニヨル ビリュウ カエンソサン アンモニウム ノ チョ
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抄録
In order to prepare Ammonium Perchlorate (AP) composite propellant with a high burning rate, fine AP, of which mean diameter is less than 10 × 10-6 m, is required. In this study, an attempt was made to prepare fine spherical AP with safety through a freeze-drying method. O/W emulsion was prepared by emulsifying with organic solvent as dispersed phase and AP solution as dispersion medium. Organic solvents used in this study barely dissolve AP and water. The emulsion was frozen with liquid nitrogen and the frozen emulsion was freeze-dried. The mean diameter (Dav [m]) of AP prepared depends on the interfacical tension (σ [N-m-1]) between organic solvent and AP solution. In the case of 0.5 × 10-2 N · m-1 ≤σ 4.9 × 10-2 N · m-1, the relationship between Day and a is expressed by the following equation.<BR>Dav=0.18σ×10-3<BR>The addition of surface active agents is effective for a decrease in σ. However, foam formed on the emulsion during the preparation for all of the organic solvents used in this study except toluene. Consequently Dav deviated from the above equation and there was little spherical AP present. It was proved that the freeze-drying method is applicable as a safe preparation method for fine spherical AP.
収録刊行物
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- 化学工学論文集
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化学工学論文集 23 (2), 163-169, 1997
公益社団法人 化学工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679485692032
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- NII論文ID
- 10002767160
- 10019560965
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- NII書誌ID
- AN00037234
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- COI
- 1:CAS:528:DyaK2sXhvFartLs%3D
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- ISSN
- 13499203
- 0386216X
- http://id.crossref.org/issn/0386216X
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- NDL書誌ID
- 4161073
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可