Waterproof cable core water blocking sealant

Abstract

The invention provides a waterproof cable core water blocking sealant. 100 parts of methyl vinyl silicone rubber, 10-25 parts of fumed silica, 25-30 parts of calcium hydrogen carbonate, 5-10 parts of rutile type titanium dioxide, 1-5 parts of zinc stearate and 5-10 parts of anilmo-methyl triethoxy silane are mechanically stirred for 20-30min at the temperature of 25 DEG C according to weight ratio, and 0.5-1 part of mixture of dibutyltin dilaurate curing agents and dibutyl phthalate is added to form the finished product sealant. The sealant is free from pollution, convenient to use, safe and reliable.

Description

technical field [0001] The invention proposes a filling material in the field of cable production, which is mainly used for longitudinal water blocking of cables. Specifically, it is a waterproof cable core water-blocking sealant. Background technique [0002] At present, most of the wires and cables below deep water in China are imported cables. my country's wire and cable manufacturers can only produce a small part of the cables used in deep water, and the filling of the cable core gap is generally filled with petroleum jelly to meet the requirements. . Petroleum jelly, a by-product of petroleum, contains mineral oil and needs to be cleaned with a special solvent during installation and use, so it is poor in environmental protection. And processing requires a certain pressure for filling, so the uniformity of filling is difficult to guarantee. [0003] However, the cables used in special occasions such as ships, ships, underwater, and tunnels must require that the wires ...

AI Technical Summary

Problems solved by technology

The deep water is below 350 meters, and the deepest can reach 4500 meters at present. The sonar watertight cable used can not meet the requirements of using this kind of watertight filling paste. Therefore, it is necessary to choose a suitable material to meet the needs of this cable structure.