Method for processing scrap wire and cable

Abstract

The present invention discloses a method for processing a scrap wire and cable. The method comprises the steps of (1) carrying out pretreatment of the skin materials of a scrap wire and cable as raw materials, crushing the materials and then screening the materials, taking the granules of 5 to 20 meshes, and mixing the granules and sodium bicarbonate to obtain a mixed material, (2) winding a layer of polyester film around the outer part of a oxygen-free copper and tinned copper compound stranded wire which is taken as a soft conductor to be a winded polyester belt layer, (3) extruding an insulating layer outside the conductor winded in the step (2) with the mixed material obtained in the step (1) as a raw material by using an SJ-65 / 25 extruder, wherein the extrusion should be uniform, the thickness is consistent, the surface is smooth, and the color is consistent, (4) winding a layer of fire-resistant ceramic silicone rubber belt outside the insulation layer to be a fire-resistant layer, wherein the winding should be uniform without wrinkles, the thickness is consistent, the surface is smooth, and the color is consistent, and (5) extruding an insulation layer outside the fire-resistant layer completed in the step (4) with the mixed material obtained in the step (1) as a raw material by using an SJ-90 or120 extruder to obtain a product.

Description

technical field

[0001] The invention belongs to the technical field of rubber production, and in particular relates to a treatment method for waste electric wires and cables. Background technique

[0002] The development process of wire and cable products is essentially a process of upgrading materials. Wires and cables have a wide range of uses, and their performance requirements vary greatly in different use occasions. Insulation materials for most cables must not only have high insulation resistance, withstand voltage strength or low dielectric loss, but also have good physical and mechanical properties, such as tensile resistance, bending resistance, vibration resistance, torsion resistance, etc.; The sheath material has requirements for tear resistance, high and low temperature resistance, weather resistance, oil resistance, solvent resistance, etc. due to adapting to different use environments and occasions; some are comprehensive requirements for finished cables, suc...