巻号一覧
前身誌
51 巻, 1 号
選択された号の論文の7件中1～7を表示しています
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論文
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細川 晃平, 近藤 光, 奥宮 正太郎, 阿部 浩也, 内藤 牧男2014 年 51 巻 1 号 p. 4-9
発行日: 2014/01/10
公開日: 2014/01/24
ジャーナル フリーMechanical synthesis of strontium doped lanthanum manganite (LSM) powders were investigated using attrition-type milling without any extra heat assistance. The starting powder materials were lanthanum oxide and manganese oxide adding to strontium carbonate or strontium hydroxide as a source of strontium. The BET equivalent diameters of them were 300nm, 70nm, 240nm and 750nm, respectively. Using strontium carbonate, electric load conditions controlled by the rotor speed were changed to make clear their effect on the reaction. At 2 and 3kW loadings, LSM was successfully synthesized. At 2kW, processing time to obtain single phase of LSM was 120min. At 3kW, the time to obtain its single phase was remarkably shortened to 30min. Furthermore, using strontium hydroxide powder, single phase of LSM was synthesized by only 10min processing at 3kW. The BET equivalent diameter of synthesized LSM powder was only 100nm.抄録全体を表示PDF形式でダウンロード (778K) -
木俣 光正, 鈴木 紳太郎, 小竹 直哉, 長谷川 政裕2014 年 51 巻 1 号 p. 10-15
発行日: 2014/01/10
公開日: 2014/01/24
ジャーナル フリーIn order to use a waste clay effectively and to investigate mechanochemical polymerization as preparation method of the inorganic-organic composite materials, the mechanochemical polymerization of methyl methacrylate (MMA) was carried out by grinding the waste clay in n-heptane solvent. The waste clay was a halloysite with 16.2m2/g in specific surface area. The grinding operation was performed using a vibrating ball mill with a laboratory scale. The effect of monomer concentration in n-heptane solvent on the polymerization rate and the molecular mass of polymer were examined. As a result, the mechanochemical polymerization of MMA also proceeded by the grinding of the clay in n-heptane solvent. It was found that the polymerization rate increased with the increase of MMA concentration and that the conversion of MMA reached than 90%. Although the number average molecular mass of resulting polymer was in the order of 104 to 105, the molecular mass was decreased with the grinding time due to the scissions of polymer chains by the mechanical action. This polymerization mechanism was found to be radical reaction from the investigation of polymer tacticity. As for the composite of clay and PMMA obtained by the mechanochemical polymerization, a die molding was possible directly without kneading process.抄録全体を表示PDF形式でダウンロード (751K) -
勝野 英里, 竹内 淑子, 田原 耕平, 竹内 洋文2014 年 51 巻 1 号 p. 16-24
発行日: 2014/01/10
公開日: 2014/01/24
ジャーナル フリーThe purpose of this study was to prepare a co-ground mixture of erythritol and micronized crospovidone (M-CPVP) to prepare the orally disintegrating tablets (ODTs) by directly compressing. The co-ground mixture was prepared by ball milling. Several processing time for ball mill and the different ratio of M-CPVP / erythritol were tested to determine the appropriate agglomerates for designing the ODTs. The ODTs containing co-ground M-CPVP/erythritol mixture showed rapid disintegration (<30s) and adequate hardness of the tablets (tensile strength>1.0MPa). On the other hand, the powder mixture without this co-processing had poor compactibility, and the tableting trouble such as capping was observed. Heckel analysis revealed that the plasticity of powder bed containing co-ground mixture was higher than the powder mixture without co-processing. We could also demonstrate that ODTs containing ethenzamide, as an active ingredient, could be prepared using the co-ground M-CPVP/erythritol mixture.抄録全体を表示PDF形式でダウンロード (957K)
解説 実用環境技術シリーズ
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山田 宏志, 佐藤 基夫2014 年 51 巻 1 号 p. 25-30
発行日: 2014/01/10
公開日: 2014/01/24
ジャーナル 認証ありRecycling of construction materials used for house or buildings is typically difficult because it is not easy to disassemble them into each material. In particular, urethane insulation has been used in the building and construction industries and it is very difficult to separate from other materials. For example, inside of roof materials, door panel and wall panel, which consist of aluminum skin-plate, are filled in with urethane like composite materials.
In this study, crash of urethane from above mentioned materials was studied using Cross Flow Shredder, which is chain typed shredder. As a result, urethane and other materials were separated each other after grinding and we could show that Cross Flow Shredder is effective for separation of hard-disassembled construction materials into each material.抄録全体を表示PDF形式でダウンロード (709K)
新・基礎粉体工学講座
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後藤 邦彰2014 年 51 巻 1 号 p. 31
発行日: 2014/01/10
公開日: 2016/07/09
ジャーナル 認証ありPDF形式でダウンロード (442K) -
1. 1 粒子の大きさと形状増田 弘昭2014 年 51 巻 1 号 p. 32
発行日: 2014/01/10
公開日: 2016/07/09
ジャーナル 認証ありPDF形式でダウンロード (336K) -
遠藤 茂寿2014 年 51 巻 1 号 p. 33-36
発行日: 2014/01/10
公開日: 2016/07/09
ジャーナル 認証ありPDF形式でダウンロード (759K)
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