Abstract
Copper powder dispersed poly-methyl methacrylic acid (acrylic resin, PMMA) composites (PMMA-Cu) were prepared by the solution cast method. The Cu addition at the critical volume fraction (15.0± 1.0 vol%Cu) drastically enhanced the electric conductivity from the insulator (10-14 Sm-1) to the electric conductor (105 Sm-1). The electric conductivity can be obtained by controlling the volume fraction of copper powders in PMMA polymers, as dilatation. The addition of 10 vol%Cu slightly enhanced the impact value of PMMA, whereas the remarkable decrease in the Charpy impact value was found at 25 ±5 vol%Cu. The high conductive PMMA-Cu composites (from 15 to 20 vol%Cu) with high impact value (5.5±0.5kJm -2), which was higher than that of dispersed nylono6 composites (2kJm-2) utilized for practical exteriors, were obtained without impact value decay by addition of small amount of copper powders.
Original language | English |
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Pages (from-to) | 1437-1442 |
Number of pages | 6 |
Journal | Materials Transactions |
Volume | 51 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2010 Aug |
Externally published | Yes |
Keywords
- Composites
- Electrical conductivity
- Impact value
- Poly-methyl methacrylic acid (PMMA)
- Solution cast
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering