Polyphenylenes as new polymer matrix precursor for carbon/carbon composities materials were synthesized and their thermal stabilities were studied. 1,3- and 1,4-diethynylbenzenes(1,3-DEB and 1,4-DEB) as the monomer were synthesizers by dehydrobromination of 1,3- and 1,4-bis(1,2-dibromoethyl) benzenes(1,3-BDEB and 1,4-BDEB) as an intermediate of the monomer, which were prepared by treating divinylbenzene with bromine. Poly(diethynylbenzene) which can play a role as a polymeric matrix of the composite was prepared by thermal polymerization of 1,3- and 1,4-DEB, respectively. Copolymers of phenylacetylene and DEB were also prepared. The structures of monomer and polymer estimated during the synthesis were identified using IR, NMR and elemental analysis(EA) techniques. Their thermal stabilities were estinlated using a thermogravimetric analysis.

탄소/탄소 복합재에 사용되는 새로운 polyphenylene계 고분자 매트릭스를 합성하였다. 단량체는 divinylbenzene에 브롬을 첨가시켜 1,3-과 1,4-bis(1,2-dibromoethyl)benzene을 합성한 후 각각 dehydrobromination하여 1,3-과 1,4-diethynylbenzene을 합성하였다. 고분자 매트릭스인 poly(diethynylbenzene)은 1,3-과 1,4-DEB를 열중합으로 제조하였으며, 또한 DEB와 phenylacetylene을 공중합하여 공중합매트릭스를 합성하였다. 한편 합성 과정에서 얻어진 단량체와 중합체의 구조는 IR, NMR spectrum 그리고 원소분석을 사용하여 확인하였으며, 열안정성은 TGA로 관찰하였다.

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