A kind of heat-resistant anti-UV flame-retardant sheathing material and preparation method thereof

Abstract

The invention discloses a heat-resistant and anti-UV flame-retardant sheath material and a preparation method thereof. Composed of anti-oxidant and antioxidant, the preparation method is very simple. Firstly, the components are banburyed and mixed evenly, and then the materials are transferred to a twin-screw / single-screw two-stage mixing and granulating unit for extrusion and granulation. The flame-retardant sheathing material of the present invention can achieve a good cross-linking effect after being irradiated at 15-18 Mrad, resists UV without cracking, resists long-term thermal aging, produces very little harmful and corrosive gas, and can meet the requirements of YD / T 1113‑ According to the 2015 standards for halogen-free low-smoke flame-retardant materials for communication cables and optical cables, the temperature resistance level of 150°C requires that the change rate of tensile properties after heat aging be within the range of ±30%.

Description

technical field [0001] The invention belongs to the technical field of cable sheath materials, and in particular relates to a heat-resistant and UV-resistant flame-retardant sheath material and a preparation method thereof. Background technique [0002] With the continuous improvement of people's awareness of environmental protection and safety, as well as the update and implementation of various material standard systems, safe, environmentally friendly, and flame-retardant communication materials have become a major trend. The working environment of the optical cable is directly related to the base station chassis and the local climate, especially in areas with harsh conditions, which will be affected by high and low temperature, temperature difference between day and night, sunlight, and environmental corrosion. To maintain good communication stability and safety performance, optical cables are required to have excellent high and low temperature resistance, UV resistance w...

AI Technical Summary

Problems solved by technology

Most of the existing cable sheath materials have excellent flame retardancy and high and low temperature resistance, but their long-term thermal aging resistance and UV resistance are generally poor, and their performance will decrease significantly after being used in a high temperature environment for a period of time. There are security risks

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