| 摘要 |
PURPOSE:To effectively bind the pores without deteriorating the function provided to porous glass by impregnating the pores of the porous glass with a silicon compd. having a specified coupling group and decomposing the silicon compd. in the pores. CONSTITUTION:The porous glass is dipped in vacuum in the soln. of a silicon compd. (tetraisocyanate silane, etc.) having a coupling group shown by the formula, and the inside of the pore is impregnated with the silicon compd. The silicon compd. reacts spontaneously with the silanol group mainly present on the pore surface and the water remaining in the pore, and a precursor capable of forming a three-dimensional glass network structure is formed. Then after most of the unreacted silicon compd. is removed, the substituted silanol group is reactivated into a silanol group by oxidation or hydrolysis. By further repeating the process, a three-dimensional network structure body is formed, and the pores are bound.
|
