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전준표 충남대학교 대학원 2002 論文集 Vol.20 No.-
Conventional organic matrixes such as phenolformaldehyde, pitch for the carboncarbon composite have several problems, which include repeated carbonization for the composite fabrication and shrinkage during pyrolysis. In this study, we have proposedpolyarylacetylene(PAA), as a new developing organic matrix, which can solve the problems and improve the properties of composite. PAA resin was prepared by the cyclotrimerization of diethynylbenzene using nickel catalyst. PAA resin was a slightly crosslinked aromatic polymer with some acetylene group that contains only carbon and hydrogen. Its advantage is high char yield( >85%)after cabonization and low curing temperature(onset curing at 130∼140℃). It was expected that PAA resin improved abradability of the carboncarbon composite, decreased the densification cycle and reduced manufacture expenditure by the one step processing