RADIATION-CROSS LINKED COMPOSITION BASED ON FLUOROCARBON POLYMER Russian patent published in 2011 - IPC H01B3/46 

FIELD: chemistry.

SUBSTANCE: insulating materials are radiation-cross linked composition based on hydrogen-containing fluoropolymers with polyallyl ethers of polycarboxylic acids acting as cross linking agents. The radiation-cross linked composition based on fluorocarbon polymer contains a hydrogen-containing fluorocarbon polymer with a cross linking agent which is triallyl isocyanurate, and zinc oxide. The fluorocarbon polymeer is an alternating modified copolymer of tetrafluoroethylene and ethylene of equimolar composition, which is such a mixture of two modified copolymers of tetrafluoroethylene and ethylene with different melt flow indices, where the first copolymer of tetrafluoroethylene and ethylene has melt flow index of 60-90 g/10 min in a prepared mixture with CuI₂ and with content of the latter between 0.1 and 1.0 wt %, and the other copolymer of tetrafluoroethylene and ethylene is part of the composition with melt flow index of 20-35 g/10 min.

EFFECT: composition has high manufacturability during extrusion and provides high mechanical strength, hardness, wear resistance of the insulation material made from the composition.