Effects of colloidal silica suspension mixing on porosity of phosphate-bonded investments after setting and heating processes

• Material Type: 博士論文
• Title: Effects of colloidal silica suspension mixing on porosity of phosphate-bonded investments after setting and heating processes
• Author/Editor: Bae, Ji-Young; Asaoka, Kenzo
• Author Heading: Bae, Ji-Young; Asaoka, Kenzo
• Publication, Distribution, etc.: The Japanese Society for Dental Materials and Devices
• Publication Date: 2013-05-30
• Publication Date (W3CDTF): 2013-05-30
• Alternative Title: 硬化後および焼却後のリン酸塩系埋没材の気孔率に対するコロイダルシリカ懸濁液の効果
• Periodical title: Dental Materials Journal
• No. or year of volume/issue: 32 3
• Volume: 32
• Issue: 3
• Pages: 502-507
• ISSN (Periodical Title): ISSN : 1881-1361; ISSN : 0287-4547
• Degree grantor/type: 徳島大学
• Date Granted: 2015-03-23
• Dissertation Number: 甲第2809号
• Degree Type: 博士（歯学）
• Text Language Code: eng
• Subject Heading: Phosphate-bonded investment; Porosity; Colloidal silica; Refractory; Density
• Target Audience: 一般
• Note (General): A numerical simulation model, which was based on the setting and heating reactions of the binder phase of phosphate-bonded investment compacts, was developed to compute the porosities of set and burnout compacts. Densities and concentrations of microsilica particles in dilute suspension were measured and input into the simulation model. Validity of the model was confirmed by experimental results, that is, colloidal silica suspensions were prepared using different silica concentrations and mixed with investment powders. Porosities of these set and burnout compacts were experimentally measured. Effects of these factors on the porosity of compacts were examined using the developed simulation model: liquid/powder (L/P) ratio, concentration of microsilica particles in colloidal silica suspension, and ratio of binder component (NH4H2PO4) in investment powder. It was concluded that numerical simulation is a viable tool for dental materials research.
• Format (IMT): application/pdf
• Access Restrictions: インターネット公開
• Related Material (DOI): 10.4012/dmj.2012-280
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 徳島大学 : 徳島大学機関リポジトリ

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