Fluorosiloxane elastomer

Some of these polymeric hybrid fluorosilicones were crosslinked to obtain fluorosiloxane elastomers that combine a good flexibility at low temperature, lower than - 40 °C, and a good thermooxidative stability over 250 °C [51,52). They may be proposed as alternative materials with respect to polyfluo-roolefin elastomers. 

Also of interest are fluorosiloxane elastomers. Placing fluorine atoms into silox-ane repeat units can be useful for increasing the solvent resistance, thermal stability, and surface-active properties of a polysiloxane [12-14]. 

Many polyimides are brittle. To toughen a brittle PI, special elastomers (55) have been added. Silastic rubber, vinyl fluorosiloxane, and Sylgard, divinyl-dimethyl-siloxane, can be directly blended with PI, e.g., LARC-13. Two amino-functional elastomers have been used successfully (1) ATBN, aniline-terminated butadiene-... 

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