Research on the nanocomposites of polypropylene/mica by melt compounding
| Autor: | Ji-Yuan Chen, 陳紀淵 |
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| Rok vydání: | 2009 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 97 In this paper we use melt compounding to produce nanocomposites of mica /polypropylene (PP). The synthesis of nanocomposites materials include polypropylene, and mica (include non-modify and modify). To investigate the improvement on the static mechanical and Physical properties, dynamic mechanical analyzer (DMA), heat properties of mica /polypropylene nanocomposites. The static mechanical properties include tensile strength and modulus, impact strength and hardness. In the heat properties include thermogravimetric analyzer (TGA) and differential scanning calorimeter (DSC). And the melt flow index. Different functional groups were grafted on the mica by Fourier transform infrared spectrometer(FTIR). It is observed that the modification influenced bound force between PP and mica by SEM, and discove modify-mica best than non-modify mica of associativity. In the mechanical properties, the results had been down for tensile strength and modulus, impact strength because the Material has been Stiffening and Changes crisp. The modified mica was better than non-modified mica in the PP/mica nanocomposites, because of dispersal influenced. The glass transition (tan δ peak) has no significant effectiveness, when PP filled of mica. In the heat properties, concentration of mica was reflected in a marked increase of the heat-resistant. However, the functional groups dissociated at first, so modified mica decreased heat-resistant of nanocomposites. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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