Semiconductive shielding material of rubber cable and preparation method thereof

Abstract

The invention discloses a semiconductive shielding material of a rubber cable and a preparation method thereof. The semiconductive shielding material comprises the following components, by mass, 80 parts of a ethylene-vinyl acetate rubber, 20 parts of a hydrogenated nitrilebutadiene rubber, 3 parts of a hydrolysis resistant agent, 20 parts of a plasticizer, 3 parts of an activator, 3 parts of an antioxidant, 70 parts of conductive carbon black, 5 parts of a dispersant, 3 parts of a vulcanizing agent DCP and 2 parts of a vulcanizing assistant TAIC. The preparation method comprises the following steps: 1, adding the rubbers, the hydrolysis resistant agent, the plasticizer, the activator, the antioxidant, the conductive carbon black and the dispersant to an internal mixer according to above proportions; 2, mixing for 6min at 120DEG C; 3, adding the vulcanizing agent DCP and the vulcanizing assistant TAIC, and vulcanizing for 1min; and 4, discharging above materials, tabletting, cooling, packaging, and warehousing. The preparation method of the invention, which allows the semiconductive shielding material to have the advantages of good compatibility, good flexibility, good shielding function, good electrical performance, good mechanical performance and the like by optimizing the components, can be used for preparing semiconductive shielding layers of middle and high voltage rubber cables.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a semi-conductive shielding material for rubber cables and a manufacturing method thereof. Background technique [0002] With the sustained and rapid development of my country's national economy, the demand for energy is increasing. As the main energy source, coal and emerging renewable energy wind power industries have made great progress in recent years. [0003] my country's coal resources are generally buried deep. The average mining depth of major large and medium-sized coal mines has reached more than 400 meters, some coal mines have a mining depth of more than 600 meters, and the deepest reaches more than 1,400 meters. Therefore, medium and high voltage cables with large transmission capacity and low loss are gradually popularized and favored. [0004] Similarly, for wind turbines with a single capacity of 2MW and above, use 20 / 35KV cables to connect the high-voltage side...

AI Technical Summary

Problems solved by technology

At present, the voltage level of rubber cables is 10KV and below, the main reason is that the strippability of the semi-conductive shielding layer and the compatibility with the insulating rubber do not meet the requirements of higher voltage levels.

Images