Novel anti-oxidation filling rope and preparation method thereof

Abstract

The invention discloses a novel anti-oxidation filling rope. The filling rope comprises the following components: 20-30 parts of polypropylene, 2-4 parts of oxidized wax, 75-85 parts of calcium carbonate, 0.8-1.5 parts of stearic acid, 0.5-1.5 parts of a 1035 antioxidants, 1-2 parts of industrial white oil, and 1-2.5 parts of a coupling agent. The preparation method comprises the following steps:the raw materials are mixed at a high speed, extrusion is performed to obtain a film, the film is stretched, opening is performed, rolling is performed, and finally twisting is performed to form a required size. According to the cable filling rope and the preparation method of the filling rope provided by the invention, the cable filling rope can avoid the problem of oxidation of a cable metal copper tape shield layer caused by a filling rope in a moisture environment with sufficient water.

Description

technical field [0001] The invention relates to the technical field of cable filling rope preparation, in particular to a novel anti-oxidation filling rope and a preparation method thereof. Background technique [0002] In the production process of medium and high voltage three-core cables, according to the requirements of product standards, a layer of metal copper tape shielding layer will be wrapped around the insulated core. In order to ensure the roundness of the finished cable, the metal shielding layer needs to be Fill the gaps between cores. In order to ensure the flexibility of the cable, the filling material should be light in weight, non-absorbent, and minimize the air gap inside the cable. Usually, the filling rope is made of polypropylene (PP) as the base material, and the filling rope produced by calcium carbonate is added to ensure the safety of the cable. The appearance is good. [0003] At present, the polypropylene filling rope used in the cable industry d...

AI Technical Summary

Problems solved by technology

The reason is that from the perspective of cable design, moisture is not allowed inside the cable during operation, but in actual use, when the buried cable is used for a certain number of years (such as 3 to 5 years), the cable There will be a certain amount of moisture inside. The longer the cable is used and the lower the laying terrain, the more moisture inside the cable. The migration of the filling rope material inside the cable will cause the copper tape to oxidize and blacken, which will definitely affect the safety of the cable. Serious safety hazard caused by operation