Manufacture of Functionally Gradient Carbon-Carbon Composites

摘要

A high-throughput fabrication method for production of carbon-carbon composites is described.Utilizing robotic preform technology originally developed for producing glass-fiber reinforcedautomotive components a method is described for producing a functionally gradient carbon-carboncomposite for aircraft and automotive brakes. Selective distribution of carbon fiber tow and binderin the preform using a robot allows thick composites to be optimized. Simulations of the fiber towdeposition process are performed to optimize the process. Preforms are processed in a resin transfermolding (RTM) process injecting synthetic pitch for densification of carbon-carbon composites toshorten the cycle time for composite manufacture. A key element of the process route is theoptimization the time for needed to stabilize the synthetic resin used for RTM.