Room-temp, silane cross linked polyethylene plastic and its preparation method

Abstract

An ordinary-temp silane cross-linked polyethylene plastics used for insulating layer of electric cable and plastic tube is prepared from polyethylene resin, silane cross-linking agent, metal passivating agent, cross-linking catalyst, carrier and antioxidizing agent through preparing the silane grafted material, preparing mother material of catalyst, mixing them together, extruding out for shaping, and laying aside for 1-3 days.

Description

technical field

[0001] The invention relates to an insulating layer and a low-medium-high-density pipe material used for electric wires and cables. Specifically, it relates to a silane cross-linked polyethylene plastic that does not need to be restricted by humidity and temperature conditions. Background technique

[0002] Cross-linked polyethylene plastic has the advantages of good heat resistance, strong load capacity, non-melting, corrosion resistance, high mechanical properties, excellent electrical properties, and no carcinogenic lead stabilizers. It is used to replace traditional PVC plastic in more and more wire, cable and pipe manufacturing. The application of cross-linking technology has greatly improved the maximum service temperature and environmental stress cracking resistance of cables and pipes. However, silane cross-linked polyethylene plastic can only be cross-linked when soaked in warm water or placed in a steam environment, so it requires a larger pool an...