CMC Matrix Polymers

KDT polysilazane matrix polymers are low viscosity, liquid resins that are thermoset to a solid upon heating and convert to silicon carbide and silicon nitride ceramics at high temperatures.  This allows them to find application in ceramic matrix composite applications where lightweight, thermal stability, and corrosion resistance are needed.  The composition of the final ceramic obtained depends on the processing parameters and pyrolysis atmosphere.  In general, the polymers convert to an amorphous ceramic at temperatures around 750 °C and remain amorphous up to approximately 1400 °C; a crystalline ceramic is formed above 1400 °C.  Structural components made from KDT polysilazanes are a lightweight substitute for more conventional materials. CMCs made from KDT polysilazanes have the advantage of being lighter and less dense with the ability to operate at higher temperatures than metal alloys.
For example, in aircraft engines the lighter weight of CMC components made from KDT's polysilazanes compared to metallic components can reduce fuel consumption allowing for longer range and increased payload.

Benefits of Using KDT Polysilazanes as a CMC Matrix:

• High thermal stability
• High ceramic yield; > 75 % at 1400 °C
• Easily processed by PIP and RTM techniques
• Exceptional mechanical properties of resulting CMCs
• Possible to control ceramic composition

CMC Matrix Polymer Products:

• KDT Ceraset Polysilazane 20
• KDT Ceraset Polyureasilazane
• KDT Ceraset DI-200