High and low temperature-resistant and breakdown-resistant insulating EPDM material for electronic water pump bracket and preparation method and application of EPDM material

The invention discloses an insulating EPDM (Ethylene-Propylene-Diene Monomer) material with high and low temperature resistance and breakdown resistance. The insulating EPDM material with high and low temperature resistance and breakdown resistance comprises the following components in parts by weight: 60-90 parts of EPDM; 20 to 70 parts of needle-like calcium carbonate; 5 to 20 parts of silicon dioxide; 1-3 parts of an initiator; and 0.5-1 part of an antioxidant, wherein the antioxidant is a composite antioxidant of a main antioxidant 1010 and an auxiliary antioxidant 168. According to the invention, the needle-like calcium carbonate with specific content and specific specification is added into the formula, and the composite antioxidant is adopted, so that the obtained insulating EPDM material with high and low temperature resistance and breakdown resistance has good breakdown resistance and insulativity, and has excellent high and low temperature resistance. 本发明公开了一种耐高低温、耐击穿的绝缘EPDM材料，耐高低温、耐击穿的绝缘EPDM材料各组份重量