Organosilane crosslinked polyethylene cable material and preparation process thereof

Abstract

The invention discloses an organosilane crosslinked polyethylene cable material, wherein the mass ratio of vinyl trimethoxy silane serving as a cross-linking agent, dicumyl peroxide serving as a cross-linking agent initiator, and butyltin dilaurate serving as a catalyst is (2.5-4): (0.2-1): 0.2. The preparation process is a one-step method, comprising the following steps of: mixing pre-mix materials and then directly granulating to obtain particles in a semi-cross-linking state, wherein the mixing temperature is 100-120 DEG C and the mixing speed is 960 rpm; and discharging at the mixing temperature of 140-145 DEG C by using a dual-screw machine at the speed of 300-400 RPM. The organosilane crosslinked polyethylene cable material and the preparation method thereof disclosed by the invention have the following advantages that: with adoption of the components, the organosilane crosslinked polyethylene cable material is prepared by using the one-step method, the granulating process of the cable material and the cable molding process are simplified.

Description

technical field [0001] The invention mainly relates to a silane cross-linked polyethylene cable material, specifically a silane cross-linked polyethylene cable material with low-density polyethylene resin as the main material; Granulation, the method of obtaining the silane cross-linked polyethylene cable material of the granular material in the semi-cross-linked state. Background technique [0002] The traditional production method in the past is a two-step method, that is, separate matrix masterbatch and catalytic cross-linking masterbatch. In the cable forming process, the two masterbatches are mixed and then cabled, and then undergo post-treatment, granulation process and cable forming process. complex. Contents of the invention [0003] The main task of the present invention is to provide a silane cross-linked polyethylene cable material, specifically a silane cross-linked polyethylene cable material whose gel content can be controlled below 30%. [0004] In order t...

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Problems solved by technology

[0002] The traditional production method in the past is a two-step method, that is, separate matrix masterbatch and catalytic cross-linking masterbatch. In the cable forming process, the two masterbatches are mixed and then cabled, and then undergo post-treatment, granulation process and cable forming process. complex

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