| 摘要 |
Inorganic fibres are formed by a sol-gel process as a glass having the composition - 66.5 < Al203 < 73.5 wt%; 11.5 < Si02 < 15.5 wt%; 4 < Ca0 < 13.5 wt%; 4 < Sr0 < 13.5 wt%; and having an alkaline earth metal oxide content of between 12 wt% and 20 wt% and having an Al203+ SiO2 content of between 80 wt% and 87 wt%. Methods of manufacture comprise formation of a sol comprising precursors of aluminium oxide, silicon oxide, calcium oxide and strontium oxide, forming fibres from the sol and firing the resultant fibres at a temperature in excess of 900 degrees C to produce the said fibres. Applications thereof include thermal insulation, mastics, composite materials, papers, support structures for catalysts, friction materials, catalyst bodies, fibre blends and automobile components. |
