A Rapid Determination of the Graphite Fiber Content of Plastic Composites,

摘要

The recent advent of graphite fiber as a practical reinforcing agent for plastic composites has greatly increased the need for a rapid,accurate method for determining the exact amount of this fiber present in composite specimens. Research was consequently undertaken to develop a rapid,quantitative analytical procedure which would minimize the problems of the earlier methods and be suitable for production control. The method described in this paper involves dissolving of the composite,in sulfuric acid,removal of the graphite fibers by filtration,and weighing. It allows the graphite fiber content of epoxy,polyimide resin,and phenolic-based systems. (Author)