Curable adhesive tape for blocking Leakage, and repairing and protecting cable

Abstract

The invention relates to a solidifiable belt which is used for the pipeline mending leakage and the cable mending and protection. The belt is characterized in that a layer of flame retardant polyurethane prepolymer mixture is coated on glass fiber cloth and then is packed in vacuum way to obtain the solidifiable belt. Flame retarding agent and polyhydroxy compound are used for the mixing. Then, under the protection of inert gas, polyisocyanate and the polyhydroxy compound are polymerized to obtain prepolymer with -NCO end. Added with catalyst, the prepolymer with -NCO end is coated on the glass fiber cloth without alkali or with low alkali, rolled and packed in vacuum to obtain a finished product. When the belt is used, the package is opened and the belt is winded on the outside of the cable or the pipeline. Through the reaction between polyurethane prepolymer and water in the air, a melting-free and thawing-free elastic protective layer is obtained after the rapid solidification. The solidifiable belt which is used for the pipeline mending leakage and the cable mending and protection has the beneficial effects that the belt is winded on the outside of the cable or the pipeline when in use and the melting-free and thawing-free elastic protective layer is obtained through the reaction between polyurethane prepolymer and water in the air after the rapid solidification. And the solidifiable belt has the effects of perfect insulation, flame retardancy, waterproof, leakproof and anti-collision.

Description

technical field [0001] The present invention relates to a pipeline leakage repair and cable repair and protection product, in particular to a curable adhesive tape for pipeline leakage repair and cable repair and protection, which can be used for maintenance and emergency repair of pipelines, cables and cable joints in mines In power cables, it is used for armor protection of joints, repair of power cable sheaths and outer protection of cable intermediate joints. It is used for rapid leak-proof repair of various pipelines and pipelines, and can be used for armor protection of pipelines. Background technique [0002] In mining machinery, the cable is often damaged due to friction, especially the drag cable on the coal mining operation surface is particularly easy to be damaged, and if production is stopped for maintenance, it will cause greater economic losses. In various industrial and mining enterprises, the material and manufacturing factors of various water and ventilatio...

AI Technical Summary

Problems solved by technology

For example, S and P are prone to corrosion, and C and Si are prone to brittle cracking; the microcrystalline fineness level is low, and cracks propagate along the grains, which is prone to cracking; in the steel pipe manufacturing process, there are defects on the surface such as scratches, pits, micro Cracks, etc., are also prone to corrosion and cracking

However, the aging resistance and environmental stress cracking resistance of polyethylene have not been tested for long-term use. Once the outer covering layer of polyethylene ages or cracks and fails, it is difficult for the thin epoxy resin in the inner layer to achieve equivalent anti-corrosion effects. The price is higher, so it is only suitable for use in special cases