Mechanical Properties with High Temperature and the Microstructure of Carbon/Phenolic Ablative Composites  

作　　者：王天波 鞠玉涛 

机构地区：[1]Department of Aerospace and Astronautics,School of Mechanical Engineering,Nanjing University of Science and Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2012年第5期967-972,共6页武汉理工大学学报（材料科学英文版）

基　　金：the Innovation Foundation of Postgraduate of Jiangsu Province,China(No.CX08B_134Z);Beforehand Research Fund of Defense Technology(No.404040301);The Fundamental Research Funds for the Central Universities(No.NUST2011XQTR13)

摘　　要：Carbon fiber reinforced phenolic based composites were prepared by laminating molding. The variation in mechanical characteristics of composites was evaluated with heating temperature and procedure. The microstructures of composites at different temperatures were observed by optical microscope and scanning electron microscope, respectively. The results showed that the main weight loss range of carbon/phenolic is from 300 to 800 ℃, before 700 ℃ the weight loss was resulted from pyrolysis and after that the weight loss was mainly by oxidation in the fiber phase; with the heat treatment temperature rising, the bonding at the interface of carbon fibers and resin matrix weakened; in the pyrolysis temperature range, the interlaminar shear strength（ILSS） of carbon/phenolic showed a rapid drop with temperature rising, and then decrease in the rate of ILSS became relatively slower; the fiber oxidation had little influence on the ILSS.Carbon fiber reinforced phenolic based composites were prepared by laminating molding. The variation in mechanical characteristics of composites was evaluated with heating temperature and procedure. The microstructures of composites at different temperatures were observed by optical microscope and scanning electron microscope, respectively. The results showed that the main weight loss range of carbon/phenolic is from 300 to 800 ℃, before 700 ℃ the weight loss was resulted from pyrolysis and after that the weight loss was mainly by oxidation in the fiber phase; with the heat treatment temperature rising, the bonding at the interface of carbon fibers and resin matrix weakened; in the pyrolysis temperature range, the interlaminar shear strength（ILSS） of carbon/phenolic showed a rapid drop with temperature rising, and then decrease in the rate of ILSS became relatively slower; the fiber oxidation had little influence on the ILSS.

关 键 词：composite materials high temperature microstructure mechanical properties 

分 类 号：TB332[一般工业技术—材料科学与工程]