A double-layer anti-oxidation pvc cable

Abstract

The invention discloses a double-layer antioxidant PVC cable, which comprises an inner insulating layer and an outer antioxidant layer, wherein the insulating layer is prepared from the following rawmaterials in parts by weight: 40-60 parts of PVC resin powder, 15-25 parts of lightcalcium carbonate, 10-20 parts of triple superphosphate, 15-25 parts of DOP oil, 5-10 parts of chlorinated paraffin oil, 1-3 parts of epoxidized soybean oil, 2-3 parts of stabilizing agent, 0.5-1 part of stearic acid, 0.3-1 part of polyethylene wax and 0.2-0.5 part of pigment; the antioxidant layer is prepared fromthe following raw materials in parts by weight: 40-60 parts of PVC resin powder, 20-30 parts of DOP oil, 1-3 parts of epoxidized soybean oil, 1-2 parts of stabilizing agent and 0.05-0.2 part of antioxidant. In preparation of the cable disclosed by the invention, an extruder is adopted, and two insulating layers are extruded on a conductive core; the melt materials of the insulating layers and theantioxidant layer are mixed in the head in advance; under the action of high temperature and pressure, the insulating layers and the antioxidant layer are tightly combined; compared with two extrudersin the prior art, the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of cable manufacture, and in particular relates to a double-layer anti-oxidation PVC cable. Background technique [0002] Cables are widely used. In the production process of cables, an insulating layer is usually coated on the outer layer of the conductive core, and the insulating layer plays the role of protecting the internal conductive core and insulating. However, during the use of the cable, the insulating layer will be exposed to the air and other oxidizing environments for a long time, and the insulating layer is prone to aging, which reduces the service life of the cable. In the prior art, some antioxidants are usually added to the insulating layer to delay aging, but only adding antioxidants to the insulating layer, the cable has poor oxidation resistance and cannot meet the requirements of use. Contents of the invention [0003] The object of the present invention is to solve the above-mentione...

AI Technical Summary

Problems solved by technology

In the prior art, some antioxidants are usually added to the insulating layer to delay aging, but only adding antioxidants to the insulating layer, the cable has poor oxidation resistance and cannot meet the requirements of use.

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