Method for preparing semi-conductive adhesive for repairing semi-conductive shield outside medium-voltage cross-linked cable

Abstract

The invention provides a method for preparing a semi-conductive adhesive for repairing a semi-conductive shield outside a medium-voltage cross-linked cable, which prepares the semi-conductive adhesive by uniformly mixing 30 to 50 grams of graphite powder, 20 to 30 grams of volatile solvent and 5 to 10 grams of plastic adhesive, preferably, 30 grams of the graphite powder, 30 grams of the volatile solvent and 5 grams of the plastic adhesive, or 40 grams of the graphite powder, 25 grams of the volatile solvent and 8 grams of the plastic adhesive, or 50 grams of the graphite powder, 20 grams of the volatile solvent and 10 grams of the plastic adhesive, wherein the volatile solvent is ethanol or acetone, the plastic adhesive is a 102 multi-purpose plastic adhesive, and 3 to 8 grams of colored conductive powder is mixed in the semi-conductive adhesive. The semi-conductive adhesive prepared by the method can well repair the semi-conductive shield outside the medium-voltage cross-linked cable, obtains good appearance quality after repairing, has no influence on the quality and the service life of the cable, reduces the using cost, saves resources, is simple and convenient to operate, is easy to be accepted by users, and is suitable for large-scale popularization and application.

Description

Technical field [0001] The present invention relates to the technical field of cables, and more specifically to the technical field of cable repairs, in particular to a method for preparing a semi-conductive adhesive for repairing a semi-conductive shield of a medium voltage cross-linked cable. Background technique [0002] The biggest difference between 6kV~35kV XLPE cable and low voltage cable is the inner and outer semi-conductive shielding layer. In the production process, the insulation core is inevitably rubbed. Of course, the insulation of medium voltage cable cannot be repaired in principle, but the outer semi-conductive layer is Different, because it is squeezed on the outer layer of the insulation, it is easy to be bruised or scratched. If you take segmental measures, it will inevitably cause economic losses to the enterprise. Therefore, in the domestic cable industry, some manufacturers use self-adhesive semi-conductive packages There are two main problems with this me...

AI Technical Summary

Problems solved by technology

[0002] The biggest difference between 6kV ~ 35kV XLPE cables and low-voltage cables is the inner and outer semi-conductive shielding layers. During the production process, the insulating cores will inevitably rub against each other. Of course, the insulation of medium-voltage cables cannot be repaired in principle, but the outer semi-conductive layer is. Different, because it is extruded on the outer layer of insulation, it is easy to be bruised and scratched. If section measures are taken, it will inevitably cause economic losses to the company. Therefore, in the domestic cable industry, some manufacturers use self-adhesive semi-conductive packages. There are two main problems with this method:

[0003] 1. The bonding between the tape and the insulating layer is not tight, and it is easy to have a gap with the insulation, which affects the product quality;

[0004] 2. The appearance quality is not good 3. The outer diameter of the insulated wire core is large after wrapping