Insulating material as well as preparation method and application thereof

The invention provides an insulating material as well as a preparation method and application thereof. The insulating material comprises the following components of: matrix resin, a main cross-linking agent, an auxiliary cross-linking agent, a main antioxidant, an auxiliary antioxidant and a voltage stabilizer; based on the total mass of the 100% of the matrix resin,the content of the main cross-linking agent is 1.0-3.0%, the content of the auxiliary cross-linking agent is 0.1-1.5%, the content of the main antioxidant is 0.1-0.5%, the content of the auxiliary antioxidant is 0.03-0.2%, and the content of the voltage stabilizer is 0.5 to 5.0 percent. The insulating material disclosed by the invention not only has excellent electrical performance and mechanical performance, but also can greatly improve the 90 DEG C thermal life aging performance after the material is cabled. 本发明提供一种绝缘材料及其制备方法和用途。所述绝缘材料包括以下组成：基体树脂、主交联剂、助交联剂、主抗氧剂、助抗氧剂以及电压稳定剂，以所述基体树脂的总质量为100％计，所述主交联剂的含量为1.0～3.0％，所述助交联剂的含量为0.1～1.5％，所述主抗氧剂的含量为0.1～0.5