Flame-retardant silicon core pipe

Abstract

The invention relates to a flame-retardant silicon core pipe. An outer layer of the flame-retardant silicon core pipe comprises the ingredients in parts by mass: 100 parts of high-density polyethylene, 15-35 parts of polyarylate, 1-10 parts of aluminum sulfate octadecahydrate, 1-10 parts of anhydrous magnesium carbonate, 1-5 parts of basic copper carbonate, 0.5-5 parts of dispersant and 1-6 partsof antioxidant; and an inner layer of the flame-retardant silicon core pipe comprises the ingredients in parts by mass: 100 parts of high-density polyethylene, 1-8 parts of silica-gel master batch and1-6 parts of aluminum sulfate octadecahydrate. According to the silicon core pipe disclosed by the invention, by adding the aluminum sulfate octadecahydrate, the substance has a large volume of crystalline water and meanwhile has very high moisture absorption capacity; in case of combustion, the aluminum sulfate octadecahydrate can release a large volume of water vapor and play roles in extinguishing a fire and retarding flame; the anhydrous magnesium carbonate is also added and will be decomposed to absorb heat and release a large volume of water vapor and carbon dioxide during combustion, thereby playing a role in retarding flame; and the polyarylate and the basic copper carbonate exert a synergistic action and endow the silicon core pipe with good inflaming retarding capacity, and thesilicon core pipe is relatively light in environmental pollution due to no halogen.

Description

technical field [0001] The invention relates to the field of silicon core tubes, in particular to a flame-retardant silicon core tube. Background technique [0002] In the communication industry, the inner wall of the protective tube is required to be smooth to reduce the damage of the protective tube to the optical cable when the optical cable passes through the tube. Silicon core pipe is a new type of composite pipe with silica gel solid lubricant on the inner wall. Because of its good toughness, good water resistance, anti-corrosion, long service life, smooth inner pipe wall, small friction coefficient, good sealing performance, engineering Low cost and other advantages, it is widely used in the storage and protection of optical cables. In practical applications, in order to better protect the optical cable, the silicon core tube is often required to have a certain flame retardancy. The flame retardant materials currently used for silicon core tubes often contain haloge...

AI Technical Summary

Problems solved by technology

Flame retardant materials currently used for silicon core tubes often contain halogens, which are not good for the environment