Si-O main chain bond energy 452 kJ/mol, long-term resistance 200-600°C, used for exhaust pipes, chimneys, boiler exteriors.
Phenyl groups provide better heat resistance, but cost increases.
Low-temperature type (below 200°C) air-dries at room temperature; high-temperature type requires 200°C bake 30min full cure.
| Model | Long-term Heat Resistance | Short-term | Typical Use |
|---|---|---|---|
| HT-200 | 200℃ | 250℃ | Heating pipes, ovens |
| HT-400 | 400℃ | 450℃ | Exhaust pipes, chimneys |
| HT-600 | 600℃ | 650℃ | Boiler, furnace exterior |
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