Preceramic precursors
Polysiloxane
Typical properties- Functional group: -vinyl, -OH, -H & -allyl
- Density: 1.5 to 3.5 g. ml-1
- Viscosity: 50 to 150 CPS
- Solubility: Ethanol
- Curing temperature: 100 °C
- Ceramic yield: > 75 wt.%
- Max. operating temperature [under inert conditions (Ar & N2)]: 1200 ˚C
- Max. operating temperature of derived ceramics (under air): 1000 ˚C
Polyborosiloxane
Typical properties- Functional group: -vinyl & -allyl
- Density: 1.5 to 4.0 g. ml-1
- Viscosity: 50 to 250 CPS
- Solubility: Ethanol
- Curing temperature: 150 °C
- Ceramic yield: > 80 wt.%
- Max. operating temperature [under inert conditions (Ar & N2)]: 1400 ˚C
- Max. operating temperature of derived ceramics (under air): 1200 ˚C
Polycarbosilane
Typical properties- Functional group: -H, -vinyl & -allyl
- Solubility: Toluene
- Curing temperature: 200 °C to 250 °C
- Ceramic yield: > 60 wt.%
- Max. operating temperature [under inert conditions (Ar & N2)]: 1400 ˚C
- Max. operating temperature of derived ceramics (under air): 1200 ˚C
Polysilazane
Typical properties- Functional group: -H & -vinyl
- Density: 1.0 to 2.0 g. ml-1
- Viscosity: 150 to 250 CPS
- Solubility: Toluene
- Curing temperature: 150 °C
- Ceramic yield: > 80 wt.%
- Max. operating temperature [under nitrogen atmosphere]: 1450 ˚C
- Max. operating temperature of derived ceramics (under air): 1300 ˚C
Polyborosilazane
Typical properties- Functional group: -H & -vinyl
- Density: 1.0 to 2.0 g. ml-1
- Viscosity: 120 to 250 CPS
- Solubility: Toluene
- Curing temperature: 120 °C to 150 °C
- Ceramic yield: > 75 wt.%
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