Low-Cost Jute-based Carbon Fibers and the Structure Evolution During Pre-Oxidation
Low-cost jute-based carbon fibers (JBCFs) are fabricated after pre-oxidation and carbonization.The evolution of chemical structure and crystal structure of jute fibers during pre- oxidation are investigated by DSC,FTIR,elemental analysis,XRD,linear density,tensile strength and SEM.Proper pre-oxidation temperature range (250℃ - 340℃) is obtained.At 250℃,significant oxidation occurs,the C=O functional groups of jute fibers increases to maximum.Meanwhile,typical cellulose crystal structure disappears and a new aromatic structure appears.As the temperature rises from 250℃ to 340℃,the C=O functional groups gradually lose while the aromatic structure steadily develops.Tensile strength of JBCFs is in proportion to Aromatic Index calculated from XRD,rather than the content of C=O groups.The highest tensile strength of JBCFs can reach to 224.7±61.1MPa.
Jute Carbon Fibers Pre-oxidation
heng wu
Science and Technology on Thermostructural Composite Materials Laboratory,Northwestern Polytechnical University,Xian,Shaanxi 710072,PR China
国际会议
The tenth China-Japan joint conference on Composite Materials (第10届中日复合材料学术会议(CJJCC-10))
成都
英文
466-466
2012-09-08（万方平台首次上网日期，不代表论文的发表时间）