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????? ??? ??? GEL ?????????? ??? GEL ??????????? ????????? ????? ? ???? ???????? ??????????????? ????????. ??? GEL ??????????? ???????? ? ???? ???????? ??????????????? ???????? ? ?? ???????? ???????????? ?? ???????????? ????? ????????????. GEL (SiO2) ??????????????? ??? ????????? ???????????? ?? ???????? ???????? ???????????? ????? ????????? ? ??????? 40 ??? 60 ranging ???? ?????? ????? ????????? ?????????? ??????. ???????? ????????? ????? ????????? ?? ?????? ????? ????? ??????? ???????? ????????? ????? ?????????? ????? ? ?? ???????? ?? ?????? ??????????? ???????. ?????? ??????? ???????????? ? ?? ??????????? ????? ????????? ??????% 95 ??? ????? ? ??? ????? ???????? ?? ????? ????? ??????? ?????????? ??????. ????????????? ????? ???????????? ?? ???????? 25 25 at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at at 20 at ????????? ?????????????? GEL ????????? ????? ?????? ?????????? ??????????? ? ??????? ??? ??????? SiO2 ??????????? ???????? ????????? ? PF / PVC-SiO2 ?????? ???????? ?? ABS ????????? ???????? ???? ????????????? ??? ?????? ?????? ? ???????? ????????? ???????? ?? ?????????? ????? ?????? ????? ??????. ???????????? ?? ????????? ???????? ????? ?????? ?????? ? ????? ??? ??? GEL ???????? ????????? ????????? ????? ????? ? ??????? ???????? ????????? ????? ????? ?? ???????? ????? ??????????.