No. Excommunication cuts a man off from the visible Church on earth. But no man can be excommunicated save for mortally sinful conduct which supposes that he has already cut himself off from God’s grace and from the soul of the Church. If he dies excommunicated and without repenting, his own unrepented sin takes him to hell, not the sentence of excommunication.
Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty