?? ???? ??? ???????? ?????

?? ???? ???? ??? ???????? ???? ??? ????????? ????? ??? ??? ????????? ????? ????? ????? ???? ??? ????????? ??????? ??? ??? ????????? ????? ????? ????, ?? ???????????? ?????????????? ??? ???????????? ???? ???? ??? ??????? GEL (SiO2) ?????????????????? ???? ??? ?????? ??? ?????????? ??? ???????? ??????? ?????? ????, ????? 40 ???? 60 ℃ ??????? ???? ??????????? ??????? ??? ???? ????? ????? ???????? ?????????? ??? ???? ????? ?????????? ?????? ??????? ????? ???????? ????, ?? ??????? ??? ?????????????? ????????????? ??? ???? ???????????????, ?? ????????????? ????? ????????? ?????? 95% ???????? ????, ????????? ?????????? ??? ????????? ??????? ???? ????????? ?????? ???, ?? ???????????? 25 ℃ ? ????? ??????? ?????????????????? 20 ??? ??????? ??????? ???? ???? ???, ?? ????? ?????????? ????????????? ??? ????????? ????????? ???? ??? ?????????????? ????? ?????? GEL ????????? ?? ???????? ????? ?????, ????? ??? SiO2 ???????? ???????? ?????????, PF/PVC-SiO2 ?????? ??? ???? ABS ?????? ???????? ???, ?? ???????????? ????? ????????? ??????? ??? ?????? ?????????? ????? ????? ??? ???? ?????? ?????? ?????????? ??? ?????????? ????????, ?? ???? ???? ??? ???????? ????? ?????????????? ???? ??????????? ?????? ????????? ???, ?? ??????????? ??????? ???????? ????????? ??? ?????????? ?????? ????