Irradiation crosslinking polyolefin cable material and preparation method thereof

Abstract

The invention belongs to the technical field of cable material manufacturing, and in particular relates to an irradiation crosslinking polyolefin cable material and a preparation method thereof. The irradiation crosslinking polyolefin cable material comprises the following components in parts by weight: 55-65 parts of an ethylene-vinyl acetate copolymer, 18-25 parts of high density polyethylene, 30-50 parts of magnesium hydroxide, 12-16 parts of red phosphorus, 12-18 parts of nano-grade montmorillonoid, 0.15-2.5 parts of stearic acid, 1.5-4.5 parts of silicone, 0.4-6 parts of an antioxidant 1010, 0.5-6 parts of an antioxidant DLTP, 1-10 parts of triallyl isocyanurate and 0.1-1 part of a ditert-butyl peroxide. The invention further discloses a preparation method of the irradiation crosslinking polyolefin cable material. After being used on a conductive cable core in an extrusion and sleeving manner, irradiation crosslinking polyolefin prepared from the material components in parts by weight by using the preparation method has the characteristics of being very good in aging resistance, super long in service life, relatively good in mechanical physical property, relatively high in security coefficient and the like.

Description

technical field [0001] The invention belongs to the technical field of cable material production, and in particular relates to a radiation crosslinked polyolefin cable material and a preparation method thereof. Background technique [0002] As a building product, housing has problems of service life and lifespan. According to the "General Rules for Civil Building Design" issued by the Ministry of Construction, the design service life of ordinary buildings and structures is generally 50 years. Calculated from the date of completion and acceptance, 50 years is generally the life span of ordinary houses. At present, the wires and cables used in buildings have a service life of 25 to 30 years, which is only about half of the service life of houses. In China, accidents caused by cables that have not been replaced for a long time or not replaced in time are not uncommon. The main cause of the accidents is the short circuit caused by the aging of the cables. Among the effective me...

AI Technical Summary

Problems solved by technology

However, the existing cross-linked polyolefin materials have different properties due to their different uses. The cross-linked polyolefin materials that have been developed on the market for construction cables have a longer service life than ordinary materials, but they have not yet been developed. It can achieve the same lifespan as the building. During the entire life of the building, the cables still need to be replaced, and safety accidents will still occur when the replacement is not urgent.

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