| 摘要 |
PURPOSE:To enable preparation of a parent material for fluoride glass fiber having superior characteristics by mixing >= two kinds of organometallic compd. contg. no oxygen in gaseous phase and heating the mixture in F2 or in a gaseous F-compd. CONSTITUTION:Organometallic compds. such as Al(CH3)3, AlC(C2H5)3, B(CH3)3, PbC(C2H5)4, Pb(C2H5)4, Sb(CH3)3, etc. are purified by distillation, then mixed in a specified proportion in gaseous phase. Simultaneously, the mixture heated with F2 or an F-contg. compd. such as CCl2F2, etc., at 900 deg.C is brought into reaction and vitrification. The molten glass is performed by casting to obtain a parent material for fluoride glass fiber which is drawn to prepare the glass fiber. Thus, a parent material for fluoride glass fiber contg. no impurities such as O2 or H2, nor oxide, and having superior characteristics is prepared stably. |
