SILICONE COMPOSITE MATERIAL FOR MANUFACTURING VASCULAR TISSUE REPLICA

摘要

The present invention relates to a silicone composite material and its use as a replica of vascular tissue. This material comprises: - a nonwoven silica, and - a crosslinked polymer PR obtained by hydrosilylation reaction between a first polymeric resin RP1 and a second polymeric resin RP2 in the presence of a catalyst of the hydrosilylation reaction; the resin RP1 comprising a mixture of two polymers P1-1 and P1-2, and having a viscosity V1 of between 500 and 4000 mPa.s; the resin RP2 comprising a mixture of two polymers P2-1 and P2-2, and having a viscosity V2 greater than V1 and between 5000 and 60000 mPa.s; polymers P1-1 and P2-1 comprising at least two monomeric units - (R1HSi-O) - or - (R1HSi-CH2) -; polymers P1-2 and P2-2 comprising at least two monomeric units - (R2XSi-O) -; X being a hydrocarbon group containing a C = C double bond; R1 and R2 being, independently of one another, a hydrocarbon group, or a hydrocarbon group whose hydrogen atoms are at least partially substituted