Multifunctional heat-shrinkable tube

Abstract

The invention discloses a multifunctional heat-shrinkable tube which comprises a flame-retardant layer on an outer layer, an insulating layer located on an intermediate layer and an abrasion-resistant anti-sliding layer located on an inner layer. The flame-retardant layer comprises, by weight parts, 65-75 parts of polyethylene base material, 5-10 parts of polyisoprene rubber particles, 0.5-1.2 parts of flame retardant, 0.15-1.2 parts of antioxidant, 0.5-1.5 parts of light stabilizer and 2.5-4.5 parts of processing agent. The inner surface of the abrasion-resistant anti-sliding layer is provided with anti-sliding particles. The multifunctional heat-shrinkable tube is high in hot shrinkage rate and various performances such as flame retardance and insulation, is mainly used as a heat-shrinkable tube material used on ships, has a lower cost than an imported material having the same performance and has obvious economic benefits.

Description

technical field [0001] The invention relates to a heat-shrinkable tube, in particular to a multifunctional heat-shrinkable tube. Background technique [0002] The shrinkage rate of heat-shrinkable tubes used in land-use industries such as electric power and post and telecommunications is between 45% and 50%, and the oxygen index (flame retardancy) is between 25 and 27. Therefore, land-use heat shrinkable materials are not suitable for use. on the ship. [0003] If land-use heat-shrinkable materials are used on ships, the following situations will occur: first, the shrinkage rate is low, resulting in large dimensional deviations of heat-shrinkable tubes applied to cables or other places, which cannot meet the requirements of use; second, poor flame retardancy , The flame retardancy of marine heat shrinkable tubes is not less than 30, so land heat shrinkable tubes cannot meet the needs of ships from the above two points. Contents of the invention [0004] The technical pro...

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Problems solved by technology

[0003] If land-use heat-shrinkable materials are used on ships, the following situations will occur: first, the shrinkage rate is low, resulting in large dimensional deviations of heat-shrinkable tubes applied to cables or other places, which cannot meet the requirements of use; second, poor flame retardancy , the flame retardancy of marine heat shrinkable tubes is not less than 30, so land heat shrinkable tubes cannot meet the needs of ships from the above two points.

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