High-temperature-resistant modified polyethylene sheath material for special cables

Abstract

The invention relates to a cable material, particularly a high-temperature-resistant modified polyethylene sheath material for special cables, which is prepared from the following raw materials in parts by weight: 13-16 parts of PEEK (polyetheretherketone), 32-35 parts of metallocene linear low density polyethylene, 15-18 parts of polystyrene, 12-14 parts of silicon dioxide, 6-9 parts of calcium carbonate, 2-3 parts of zinc oxide, 6-8 parts of smectite powder, 12-15 parts of ceramic hollow microsphere, 12-15 parts of aluminum silicate, 3-5 parts of 1,2-propylene glycol adipate, 2-3 parts of n-butyl methylacrylate, 12-13 parts of antimony trioxide, 11-12 parts of white factice, 14-17 parts of tributyl citrate, 1.8-2.2 parts of accelerator M and 14-16 parts of assistant. The insulating material combines the advantages of the metallocene linear low density polyethylene, polystyrene, PEEK and other raw materials, and has effectively improved mechanical properties. On the basis of high flexibility, wear resistance, impact resistance, tear resistance and other characteristics, the material has the advantages of excellent high-temperature resistance, excellent radiation resistance and the like, and is especially suitable to be used as a sheath material for special cables in aerospace and the like.

Description

technical field [0001] The invention relates to a cable material, in particular to a modified polyethylene sheath material for high-temperature-resistant special cables and a preparation method thereof. Background technique [0002] With the development of the economy, the places where cables need to be used have become diversified, and there are more stringent and diverse requirements for the performance indicators of cable sheath materials, such as insulation, tensile strength, service temperature, flame retardant performance and other indicators There are strict requirements, and continuous improvement of the performance of sheath materials is an urgent need for economic and social development. Traditional sheath materials often have poor flame retardancy, poor chemical stability, high temperature deformation, poor mechanical properties, and short service life. And other problems, bring a lot of inconvenience to the actual use, and even threaten people's life and property...

AI Technical Summary

Problems solved by technology

[0002] With the development of the economy, the places where cables need to be used have become diversified, and there are more stringent and diverse requirements for the performance indicators of cable sheath materials, such as insulation, tensile strength, service temperature, flame retardant performance and other indicators There are strict requirements, and continuous improvement of the performance of sheath materials is an urgent need for economic and social development. Traditional sheath materials often have poor flame retardancy, poor chemical stability, high temperature deformation, poor mechanical properties, and short service life. And other problems, bring a lot of inconvenience to the actual use, and even threaten the safety of people's lives and property. Therefore, it is urgent to change the original sheath material formula and improve the material performance to meet the diverse needs of the cable market.