FIELD: chemistry.
SUBSTANCE: present invention refers to the improved method for preparation of glass articles with the help of sol-gel technology. The method for preparation of glass articles is implemented by the hydrolysis and polycondensation of solution or suspension of the appropriate precursor, mainly including silicon alcoxide, and following drying of the obtained gel in the high-pressure chamber. The gel solvent is changed for aprotonic solvent, mainly for acetone, at nitrogen purging and temperature and pressure less than critical values for gel solvent. Then dried gel is densified with thermic treatment.
EFFECT: decrease of the working temperature and pressure during gel drying, excluding of the gel and ready article cracking.
11 cl, 3 ex
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