Novel Phenol Resin Carbonizing Method for Carbon Interlayer Coating between Reinforcing Fiber and Matrix in Fiber Reinforced Ceramic Composite

Abstract

The novel carbon coating process for interlayer of fiber reinforced ceramic composites between fiber and matrix was performed by carbonizing phenolic resin solution that coated on fiber surface in N 2 atmosphere at 600 o C to improve the strength and fracture toughness of CMC(ceramic matrix composite). 160 nm carbon layer was coated on fiber surface with 5 vol% of phenolic resin solution. Since the process temperature (600 o C) is lower than chemical vapor deposition(900~1000 o C), the strength and toughness could be preserved. Furthermore the coating thickness uniformity was improved to 8% of deviation along the stacking sequence. Therefore, prevention from fiber degradation during coating process and controlling coating thickness uniformity along the preform depth were achieved by coating with phenolic resin carbonizing method.

Glass Fiber-Reinforced Phenol Formaldehyde Resin-Based Electrical Insulating Composites Fabricated by Selective Laser Sintering

“…A uniform coating of phenol formaldehyde resin on the surface of glass fiber can significantly increase the contact area between the reinforcing phase and the matrix resin [32]. When the two-phase dispersion uniformity of glass fiber and phenol formaldehyde resin is poor, the aggregation of the glass fibers causes the composite material to be segregated, in which case the mechanical properties of the composite material would be reduced.…”