The invention discloses a composition with excellent dielectric properties suitable for the electrical field, which is prepared by the following steps: 1) Adding butadiene, acrylonitrile, an initiator, a first emulsifier and deionized water into a reaction kettle for polymerization to obtain nitrile rubber latex; 2) Adding Compound A and performing ultrasonic dispersion; 3) Preparing an aqueous solution of a second emulsifier, adding the aqueous solution into the reaction system in Step 2, and reacting for 30 minutes; 4) Raising the reaction temperature to 70℃, adding styrene monomer, acrylonitrile monomer, deionized water and a first initiator, reacting for 2 hours, followed by filtration, coagulation, washing and drying to obtain a rubber graft copolymer; 5) Blending and extruding SAN resin, an antioxidant and the rubber graft copolymer to obtain the composition. The composition prepared by the invention has favorable dielectric properties and comprehensive performance, and is suitable for application in the electrical field.

Area Code: CN

Application Number: CN202010344487.0