%0 Journal Article
%T Axial Thermodynamic Performance Analysis of the Different Preform C/C Composites
%A JI A-Lin
%A LI He-Jun
%A CUI Hong
%A CHENG Wen
%J 无机材料学报
%D 2010
%I Science Press
%R 10.3724/sp.j.1077.2010.00994
%X Axial thermodynamic performance of braid carbon/carbon (C/C) composites and needle C/C composites is compared. Braid C/C composites comprises the radial rod preform composite, the axial rod preform composite and the fine woven punctured preform composite. Needle C/C composites consist of the whole felt preform composites and the carbon clothes/felt layer needling preform composites. The bulk density of the whole felt preform approximates 0.2g/cm3, and the carbon clothes/felt layer needling preform is about 0.45g/cm3. The density of needle preform is less than that of braid perform, which is up to 0.70g/cm3. Axial fiber content of braid preform is more than or equal to 19%, while that of needle preform is only 5%. The axial tensile strength and thermal expansion coefficient are related to the structure of preform and axial fiber content. The average axial tensile strength of braid C/C composites is ≥40MPa, and while the needle C/C composites is around 10MPa. The axial thermal expansion coefficient of the axial rod preform, the fine woven punctured preform, the whole felt preform and the carbon clothes/felt layer needle preform C/C composites is comparative in the range of RT -800  /p>
%K C/C composites
%K perform
%K braid
%K needle
%K axial
%K tensile strength
%K thermal expansion coefficient
%U http://www.jim.org.cn/fileup/PDF/20100919.pdf