Semi-conductive buffer watertight lashing band and production method thereof

Abstract

The invention discloses a semi-conductive buffer watertight lashing band and a production method thereof and relates to the lashing band and the production method thereof. A semi-conductive watertight lashing band consists of a substrate layer, semi-conductive layers and a semi-conductive waterproof layer, wherein the semi-conductive layers are attached to two surfaces of the substrate layer and are combined with the substrate layer by bonding, coating, impregnating and other modes. The production method of the semi-conductive buffer watertight lashing band comprises the following steps of: firstly, preparing the semi-conductive watertight lashing band; and secondly, preparing the semi-conductive buffer watertight lashing band. The semi-conductive buffer watertight lashing band is used for cables, has high strength, uniform thickness and favorable saturated water-absorbing effects, plays poles of shielding and buffering an electric field and simultaneously has viscoelasticity, so thatthe cable is more firmly bound and the aim of longitudinally resisting water can be achieved. The invention has the advantages of simple production process, stable technical performance and strong practicability.

Description

technical field [0001] The invention relates to a binding strap and a manufacturing method thereof, in particular to a semi-conductive buffering waterproof binding strap and a manufacturing method thereof. Background technique [0002] During the operation of the cable, due to the strong current of the cable core, impurities, pores in the insulating layer, thorns and damaged parts of the inner and outer shielding layers will cause water trees due to the infiltration of water, causing discharge inside the insulating layer and even breakdown of the cable. This requires a semiconducting material with water-blocking properties to buffer the electric field. Since the load change of the cable core will produce a temperature difference that causes the metal sheath to expand with heat and contract with cold, therefore, a gap must be left inside the metal sheath, but if the gap is not filled, water will seep in, resulting in a breakdown accident. This requires an elastic water-block...

AI Technical Summary

Problems solved by technology

However, due to the use of non-woven fabrics as the base material, the fibers used are easy to age, and the electrical properties are easy to attenuate, and insulation points will be generated during the operation of the cable hanging net.

At the same time, due to the physical properties of the product material, the fiber is absorbent, and water molecules can easily spread on the substrate, causing the cable to continue to produce water trees.

And because there is no self-adhesiveness, the sealing effect is poor and it is impossible to block water laterally