A flame retardant cable

Abstract

A flame-retardant cable comprises, by weight, 40-80% of polyethylene, 5-20% of ethylene-vinyl acetate copolymers, 15-40% of nano composite flame retardants, 5-20% of adjuvants and 0.1-0.5% of cross-linking agents. Compared with a normal cable material obtained from simple mixing of expansible flame retardants and inorganic hydroxide, the flame-retardant cable is better in material evenness, free of normal millipores inside and better in flame-retarding performance.

Description

technical field [0001] The invention relates to a flame-retardant cable, in particular to a flame-retardant cable containing a halogen-free low-smoke flame-retardant cable sheath material. Background technique [0002] With the rapid and steady growth of the national economy and the rapid development of urban construction, a large number of buildings with various functions have been built, and the probability of fire has increased accordingly. In places where the population is relatively dense and prone to fire, high flame-retardant and fire-resistant power cables should be used to meet the use requirements. Since common high flame retardant and fireproof power cables are only insulated with the overlapping wrapping of inorganic composite insulating material mica tape, the mica powder on the mica tape is easy to fall off, resulting in a decrease in insulation performance and fire performance. The gap, this process requires special silicone rubber extrusion equipment to carr...

AI Technical Summary

Problems solved by technology

Although there are many reports on intumescent flame retardants, their research is still in its infancy, and its practical application is less

In addition, intumescent flame retardants do have excellent flame retardant potential, but their shortcomings such as poor compatibility with polymers and easy moisture absorption restrict their industrialization process to a certain extent.