Silicone rubber has a great heat-resistant and releasability. It is used for kitchen goods to take advantage of this characterization these days. On the other hand, due to the physiological inactivity, it is also used for medical tools and dental impression materials. And a swimming cap is also made of the silicone rubber. So, silicone rubbers are something very close to us. Most people use the silicone rubbers without not being aware of it. We apply it to silicone rubber rolls.
Silicone-Rubber’s Characterization
| Characterization | Mechanical properties | Test conditions |
|---|---|---|
| Hardness | 10〜95 [度] | JIS A |
| Tensile strength | 1〜12 [MPa] | Dumbbell Grade 3 |
| Elongation | 50〜800 [%] | Dumbbell Grade 3 |
| Tear strength | 20〜45 [kN/m] | crescent |
| Compression set | 1〜30 [%] | -25〜200℃ |
| Abrasive resistance | 0.1〜3 [g] | 1000times |
| Heat resistance（50% reduction time） | 1000 [h] | 250℃、50%tensile-strength |
| Oil resistance (volume variation) | +10〜 +150 [%] | 100℃×120h oil insuccation |
| Acid resistance (tensile strength variation) | -30〜 -50 [%] | 25℃×120h Conc. HCl insuccation |
| Alkali resistance (tensile strength variation) | -10〜-30 [%} | 25℃×120h 10%NaOH-aq insuccation |
| Surface resistivity | 100〜1000 [GΩ] | 25℃ |
| Dielectric breakdown voltage | 20〜80 [kV] | DC voltage, 1mm thickness |
| Conductivity | 1~1000 [Ωcm] | CB1〜20phr |
| Thermal conductivity | 0.2〜5 [W/m・K] | metal oxide 0〜300phr |