125DEG C temperature-resistant ultraviolet crosslinked polyethylene insulating material and preparation method thereof

Abstract

The invention discloses a 125DEG C temperature-resistant ultraviolet crosslinked polyethylene insulation material and a preparation method thereof. The 125DEG C temperature-resistant ultraviolet crosslinked polyethylene insulation material is prepared from the following components by weight: 100 parts of high-density polyethylene, 10-20 parts of a polyolefin elastomer, 1.0-2.0 parts of an initiator, 1.0-2.0 parts of a crosslinking agent, 0.4-1.0 part of an antioxidant and 0.2-0.5 part of a metal inhibitor. Compared with the 125DEG C temperature-resistant silane crosslinked polyethylene insulating material in the prior art, the formula composition is greatly simplified, the production process is simpler and more convenient, and downstream customers can use the insulating material more quickly and efficiently. Compared with the ultraviolet crosslinked polyethylene insulating material (the long-term use temperature is 90DEG C) in the prior art, the long-term use temperature can reach 125DEG C, the application field of the existing ultraviolet crosslinked polyethylene insulating material is expanded, and the additional value of the product is increased.

Description

technical field [0001] The invention relates to an ultraviolet light cross-linked polyethylene insulating material which can be applied to the insulating layer of a low-voltage wire and cable with a temperature resistance of 125°C and its preparation technology. Background technique [0002] As we all know, cross-linked polyethylene has the advantages of good insulation performance, simple processing, low cost, low temperature resistance, stress cracking resistance, etc., and occupies an important position in the field of insulating materials. At present, cross-linked polyethylene mainly has four methods: peroxide cross-linking, high-energy particle radiation cross-linking, silane cross-linking and the recently emerging ultraviolet light cross-linking. Among them, ultraviolet light crosslinking has attracted much attention due to its ease of use and high efficiency, and its market share has continued to expand. At present, the UV cross-linked polyethylene insulation materia...

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Problems solved by technology

However, for occasions that require high temperature resistance, such as motor equipment cables, geothermal cables, etc., conventional UV XLPE insulation materials cannot meet the application requirements.

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