Products in Prepregs & Molding Compounds: Siloxane Polymer

HexPly® 996 is a 350ºF (177ºC) curing cyanate siloxane resin with a 330ºF (165ºC) glass transition temperature. Standard cure is two hours at 350ºF (177ºC). HexPly® 996 can be autoclave and press cured. HexPly® 996 can be impregnated on all available fibers and fabrics. The recommended lay-up procedure for HexPly® 996 is HSP-L3. The recommended cure procedure is HSP-C1 or HSP-C6. Typical applications for HexPly® 996 are primary and secondary space structures where the optimum dimensional stability and lowest moisture absorption are required.

StarPCS™ SBMC-843 is a discontinuous carbon fiber reinforced molding compound containing carbon fiber, a Starfire proprietary polysiloxane resin, and refractory particulate. SBMC-843 contains a Polyramic® thermosetting resin which cures at temperatures between 200-310°C, and functions as a high temperature carbon fiber reinforced structure with a silicon oxycarbide ceramic matrix. Compression mold curing produces a green fiber reinforced polymer matrix composite (PMC) material. Further processing to 850°C minimum in inert environment results in an amorphous silicon oxycarbide ceramic matrix composite (CMC) to be used with different infiltration polymers or materials. Ideal infiltration polymers include Polyramic® SPR-212, SPR-212 based slurries (SL-227, SL-480), and other Starfire® polysiloxane products.

StarPCS™ SBMC-601 is a discontinuous carbon fiber reinforced molding compound containing carbon fiber, a vinyl substituted polysiloxane resin, and refractory particulate. SBMC-601 cures at temperatures between 180-250o C and functions as a high temperature carbon fiber reinforced structure with a silicon oxycarbide ceramic. Curing produces a green fiber reinforced composite material. Further processing to 850o C (minimum) in inert gas results in an amorphous silicon oxycarbide matrix ceramic composite that can be used as a pre-form for use with different infiltration polymers or materials. Ideal infiltration polymers include Polyramic® SPR-688 or SPR-212 based slurries (SL-227, SL-480), and other Starfire® Systems polysiloxane products.