| About |
|---|
| P-70 is a high durometer, platinum-catalyzed, RTV-2 silicone rubber. It is easy to mix and de-air, and will cure with virtually no shrinkage. The speed at which the rubber hardens can be dramatically accelerated with heat or with Pt Accelerator at room temperature. A two hour post-cure at 250°F will increase the hardness to 70. Addition-cure two-component silicone rubbers may show inhibition sensitivity. P-70 offers outstanding chemical and heat resistance and the rigidity to withstand the expansion of most polyurethane foams.&& |
| Product Description | |
|---|---|
| Generic | 硅橡胶,RTV-2 |
| Material Status | Commercial: Active |
| Features | Good Rigidity,Low contractility,High Heat Resistance,Good tear strength,Solvent resistance |
| Availabilitys | North America |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.34 | g/cm³ | |
| Thermosetting mixed viscosity | Nominal value | Unit | Test method |
|---|
| Uncured Properties | Nominal value | Unit | Test method |
|---|---|---|---|
| colour | |||
| — | Green | ||
| — | Tan | ||
| viscosity | |||
| — | 1.0 to 2.0 | Pa·s | |
| — | 140 to 160 | Pa·s | |
| Curing time | 16 to 24 | hr | |
| storage stability | 60 to 120 | min |
| Cured Properties | Nominal value | Unit | Test method |
|---|---|---|---|
| Shore hardness | |||
| Shaw’s A | 54 to 62 | ||
| Shaw’s A | 56 to 64 | ||
| Shaw’s A | 66 to 74 | ||
| tensile strength | 5.00 to 5.69 | MPa | ASTM D412 |
| Tensile strain | |||
| fracture | 130 to 180 | % | ASTM D412 |
| tear strength | 10.5 to 14.0 | kN/m | ASTM D624 |
| Electrical strength | 20 | kV/mm | |
| Relative permittivity | |||
| 100 Hz | 2.90 | ||
| Volume resistivity | 5.0E+14 | ohms·cm | |
| Dissipation factor | |||
| 100 Hz | 0.015 | ||
| Coverage（Cured） | 0.748 | cm³/g |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Operating temperature | |||
| Cured | -51 to 343 | ℃ | |
| Thermosetting components | |||
| resin | 按容量计算的混合比: 100 按重量计算的混合比: 10 | ||
| Hardening method | 按容量计算的混合比: 14 按重量计算的混合比: 1.0 | ||
| Storage period | 26 | wk |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Mixed |
| 3. Activator |
| 4. Base |
| 5. 1 Day |
| 6. 7 Days |
| 7. Post-Cured |
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