Radiation vulcanization of fluorine copolymers
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Irradiation of rubberlike fluorine copolymers gives a rubber with poor physicochemical properties, but with fillers it is possible to obtain rubbers with valuable technical properties. The surface activity of the filler has a strong effect on the properties of the rubbers obtained. The most valuable properties are those of radiation rubbers that contain active channel black. They have a higher resistance to heat aging, are more stable to solvents and static deformation than the usual peroxide rubbers. In contrast to polytetrafluoroethylene and polytrifluorochloroethylene, rubberlike fluorine copolymers of the Kel-F type are cross-linked under the action of ionizing radiation. The degree of cross-linking of the fluorine copolymers is determined by their composition and the irradiation dose and medium. The presence of oxygen promotes a greater degree of cross-linking.
KeywordsPeroxide Rubber Irradiation Dose Physicochemical Property Fluorine
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