摘要
采用溶胶-凝胶(sol-gel)技术,以正硅酸乙酯和硝酸铝为基本原料,按莫来石(3Al2O3·2SiO2)的组成配制成溶胶。将此溶胶对炭纤维进行涂覆并无机化,得到在纤维单丝表面分布与结合良好的氧化物涂层。此涂层对炭纤维的高温抗氧化性有明显提高。运用X—衍射、SEM、TG/DTA、FTIR、涂层厚度估算等方法对炭纤维涂层进行了表征。
A binary oxide sol was prepared using Si(OEt)_4,and Al(NO_3)_3.Welldistributed and dense Al_2O_3SiO_2 or mullite coating on carbon fibers was obtained by solgel and inorganization processes. The coating protects the carbon fiber efficiently from the deterioration at high temperatures up to 700℃ in air. The structural and morphological features of the coating were characterized by XRD,SEM,TG/DTA and FTIR etc.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
1998年第1期7-12,共6页
New Carbon Materials