Verfahren zum Verbessern der Formstabilitaet und Loesungsmittelwiderstandsfaehigkeitvon Polyaethylenmassen

摘要

Polyethylene is heated to a temperature at which it is amorphous, e.g. above 110 DEG C., and then either cooled to a temperature at which it is normally crystalline and immediately irradiated or cooled to below a temperature at which further change of state is reduced to a minimum, e.g. to the temperature of liquid nitrogen, warmed and then irradiated within the temperature range at which polyethylene is normally crystalline, the irradiation being effected by high-energy electrons or other high-energy irradiation.ALSO:Polyethylene is heated to a temperature at which it is amorphous, e.g. above 110 DEG C., and then either cooled to a temperature at which it is normally crystalline and immediately irradiated, or cooled to below a temperature at which further change of state is reduced to a minimum, e.g. to the temperature of liquid nitrogen, warmed and then irradiated within the temperature range at which polyethylene is normally crystalline, the irradiation being effected by high energy electrons or other high energy irradiation.