?? ?? ????? ?? ????? ???? ????? ????? ?? ???? ???? ?? ??????? ??????? ???? ?? ???? ?? ???? ??? ??????? ????? ???? ????? ????? ??? ????????? ??? ??? ????? ???????? ??? ?????? ?????? (??????? ?????? ????? ?? ??????) ?????? ????? ???????? ?????? ?? ???? ???????. ???????? ??? ????? ???? ?????? ?? ???? ?????? ?? ???????? ?????????. ??? ???? ??????? ??

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pace: The curing time may differ for epoxies, but for many quick-performing ones it could be less than an hour for any functional cure (when it's at about 60 p.c of its final, thoroughly cured strength).  Aliphatic, cycloaliphatic and aromatic amines are all employed as epoxy hardeners. Amine form hardeners will alter each the processing Qualitie