| About |
|---|
| P-44 is a translucent, medium viscosity, high tear strength, platinum-catalyzed, RTV-2 silicone rubber, which was designed for casting parts where visual inspection is required. 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. Addition-cure two-component silicone rubbers exhibit excellent chemical and heat resistance, but may show some inhibition sensitivity. P-44 is supplied with 2 Activators: P-44A (1) is used for production molds, while P-44A (2) is used for casting clear parts. P-44 is extremely useful for prototype applications where superior mechanical properties are required.&& |
| Product Description | |
|---|---|
| Generic | 硅橡胶,RTV-2 |
| Material Status | Commercial: Active |
| Features | Low contractility,High Heat Resistance,Good tear strength,Solvent resistance |
| Availabilitys | North America |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.09 | g/cm³ | |
| Thermosetting mixed viscosity | Nominal value | Unit | Test method |
|---|
| Uncured Properties | Nominal value | Unit | Test method |
|---|---|---|---|
| colour | |||
| — | Clear/Transparent | ||
| — | Translucent | ||
| viscosity | |||
| — | 1.0 to 2.0 | Pa·s | |
| — | 90 to 110 | 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 | 38 to 46 | ||
| tensile strength | 3.79 to 4.48 | MPa | ASTM D412 |
| Tensile strain | |||
| fracture | 230 to 280 | % | ASTM D412 |
| tear strength | 17.5 to 24.5 | kN/m | ASTM D624 |
| Electrical strength | 20 | kV/mm | |
| Relative permittivity | |||
| 100 Hz | 2.90 | ||
| Volume resistivity | 1.0E+15 | ohms·cm | |
| Dissipation factor | |||
| 100 Hz | 3.0E-3 | ||
| Coverage（Cured） | 0.925 | cm³/g |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Operating temperature | |||
| Cured | -51 to 316 | ℃ | |
| Thermosetting components | |||
| resin | 按容量计算的混合比: 100 按容量计算的混合比: 10 | ||
| Hardening method | 按容量计算的混合比: 11 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. 7 Days |
| 6. 1 Day |
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