Natural Bakelite Powder(SI-163)
| Product Name: | Phenolic Resin Powder - Natural |
| Grade: | SI-163 |
| Molding Process: | Compression,Transfer |
| Features: | Improved Heat Resistance, Surface Finish and Mould Stability |
| Filler: | Chopped Fabric |
Grade SI-163 is a chopped fabric filled, P.F. moulding compound. It has good surface finish and high gloss. The mould should be provided with loading chamber taking into consideration and high bulk factor.
| Specification: | ||
|---|---|---|
| Powder Properties : | Unit | Typical value |
| Apparent Density | gm/ml | 0.2-0.3 |
| Bulk Factor | —- | 4.60-7.0 |
| Shrinkage | cm/cm | 0.003-0.006 |
| Pelleting | —- | Poor |
| Physical Properties : | ||
| Impact Strength | Kg-cm | 10.0-18.0 |
| Tensile Strength | kg/cm2 | 400-500 |
| Cross Breaking strength | kg/ cm2 | 670-770 |
| Specific gravity | —- | 1.38-1.40 |
| Plastic yield at 180°C | Mm | 4-6 |
| Electrical Properties: | ||
| Electrical Strength at 90 °C | V/mm | 1500-3000 |
| Volume resistivity | log10 ohm-cm | 9.0-9.5 |
| Surface resistivity | log10ohm | 8.9-9.2 |
| Other Properties: | ||
| Water absorption | Mg | 70-90 |
| Coefficient of linear thermal expansion per °C | 0.000035-0.000045 | |
| Rate of cure: | ||
| Min. cure at 160°C | sec/mm | 50-80 |
| Moulding conditions: | ||
| Recommended moulding temp. | °C | 150-165 |
| Recommended moulding pressure | kg/ cm2 | 250-450 |