31results about How to "No scorching" patented technology

This invention relates to the field of polyethylene insulation materials and discloses a polyethylene cable insulation material and its preparation method. The method includes: (1) blending an antioxidant, an anti-scorching agent, and low-density polyethylene by gravity metering, extruding, and then water-cooling and pelletizing to obtain granules; (2) preheating the granules by gravity metering and then sequentially mixing and impregnating them with a peroxide; the anti-scorching agent is 1,1-diphenylethylene and / or 2,4-diphenyl-4-methyl-1-pentene. The method provided by this invention can prepare a polyethylene cable insulation material with anti-scorching properties and high cleanliness. Furthermore, the performance of ultra-high voltage polyethylene cables above 110KV produced using the polyethylene cable insulation material provided by this invention is stable, and the scorching time is longer. Therefore, the polyethylene cable insulation material provided by this invention is suitable for the production of long-cycle cables.