Fine Dispersion and Property Differentiation of Nanoscale Silicate Platelets and Spheres in Epoxy Nanocomposites
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- Chu Chien-Chia
- Department of Chemical Engineering, National Chung Hsing University
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- Lin Jiang-Jen
- Department of Chemical Engineering, National Chung Hsing University
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- Shiu Chang-Ru
- Department of Chemical Engineering, National Chung Hsing University
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- Kwan Chang-Chin
- Department of Applied Chemistry, Providence University
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Silica spheres (with an averaged diameter of 10 nm) and silicate platelets (approximately 100×100×1 nm3 in dimension) were allowed to disperse in polyoxypropylene-triamine (400 g/mol molecular weight), then cured with the epoxy resin diglycidyl ether of bisphenol-A (DGEBA). With 1–5 wt % loading of these inorganic silicates, the cured epoxies exhibited high hardness, transparency, and a low thermal expansion coefficient. These silicate platelets also enhance the epoxy hardness from the pristine 2H to 4H while adding only 0.5 wt %. By comparison, if the spherical silica is used, a similar hardness can only be achieved by loading as high as 5 wt % of the silica. The high aspect-ratio and fine dispersion of the platelet silicates were found to be important factors in influencing the cured epoxy’s properties. In addition, a TEM micrograph shows that the silicate platelets are well-dispersed and have a unique self-arranged lamellar orientation.
収録刊行物
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- Polymer Journal
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Polymer Journal 37 (4), 239-245, 2005
The Society of Polymer Science, Japan
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詳細情報 詳細情報について
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- CRID
- 1390282681266463744
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- NII論文ID
- 10015532869
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- NII書誌ID
- AA00777013
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- ISSN
- 13490540
- 00323896
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- NDL書誌ID
- 7299006
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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