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Ultraviolet irradiation crosslinking insulating material and preparation method thereof

A technology of cross-linking insulation and ultraviolet light, which is applied in the direction of insulators, organic insulators, plastic/resin/wax insulators, etc. It can solve product quality fluctuations, affect material ratios, and the addition of light absorbers and cross-linking agents. Uniformity and other issues to achieve the effect of less smoke, fast smoothing speed, and uniform and stable product components

Inactive Publication Date: 2021-08-31
NANJING ZHONGCHAO NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process has disadvantages, that is, during the high-mixing process, the raw materials will agglomerate on the wall of the high-mixing machine, which will affect the material ratio, resulting in uneven addition and proportion of light absorbers and cross-linking agents, and material fluctuations in product quality
The base material used in the ultraviolet radiation crosslinking material on the market is basically domestic linear low density polyethylene, and the surface will be rough and the speed will be slow when extruded. The selected ultraviolet light absorber is small molecular weight light absorbing Agent BP, big smoke when squeezed out

Method used

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  • Ultraviolet irradiation crosslinking insulating material and preparation method thereof
  • Ultraviolet irradiation crosslinking insulating material and preparation method thereof
  • Ultraviolet irradiation crosslinking insulating material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: linear low density polyethylene 7042 96.5%, ultraviolet absorber BP 2%, ultraviolet crosslinking agent TAIC 1%, antioxidant 1010 0.3%, antioxidant DLTP 0.2%.

Embodiment 2

[0026] Embodiment 2: linear low-density polyethylene 7042 91.5%, high-pressure metallocene polyethylene CB1001 5%, ultraviolet absorber OEBP 1.8%, ultraviolet crosslinking agent TAC 1%, antioxidant 1010 0.3%, antioxidant DLTP 0.2 %, light stabilizer UV-0 0.2%.

Embodiment 3

[0027] Embodiment 3: linear low density polyethylene 7042 86%, high pressure metallocene polyethylene CB1001 10%, ultraviolet absorber OEBP 2%, ultraviolet light crosslinking agent TAIC 1%, antioxidant 1076 0.3%, antioxidant DSTP 0.2 %, light stabilizer UV-0 0.5%.

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Abstract

The invention relates to an ultraviolet irradiation crosslinking insulation material and a preparation method thereof. The ultraviolet irradiation crosslinking insulation material is prepared from the following raw materials in parts by weight: 80%-97% of linear low density polyethylene A, 0%-15% of high-pressure metallocene polyethylene B, 1.0%-2.0% of an ultraviolet absorber, 0.5%-1.5% of an ultraviolet crosslinking agent, 0.1%-0.5% of an antioxidant A, 0.1%-0.5% of an antioxidant B and 0.1%-0.5% of a light stabilizer. According to the ultraviolet irradiation crosslinking insulation material and the preparation method thereof, the base material and the photoinitiator in a proper proportion are selected and matched with the antioxidant component, and meanwhile, some light stabilizers are added, so that the insulation material can achieve the effects that the extrusion surface is smooth and high in speed during use, smoke is small, the crosslinking degree and efficiency during irradiation are high, and the insulation material is not yellowed under illumination after cabling.

Description

Technical field: [0001] The invention relates to the technical field of cable materials, in particular to an insulating material crosslinked by ultraviolet light irradiation and a preparation method thereof. Background technique: [0002] Ultraviolet light irradiation cross-linked wire insulation material is a new product that applies "ultraviolet light irradiation" technology to the latest technical field of polymer material modification. The basic principle is to use polyolefin as the main raw material to mix an appropriate amount of photocrosslinking initiator system, irradiate with ultraviolet light under certain conditions, and absorb the ultraviolet light of a specific wavelength to generate active macromolecular free radicals through the photoinitiator. The rapid cross-linking reaction of free radicals and other additives chemically bonds individual polyethylene long-chain macromolecules into a three-dimensional network cross-linked polyethylene supramolecular structu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08K5/134C08K5/372C08K5/132C08K5/3492H01B3/44
CPCC08L23/0815C08K5/1345C08K5/372C08K5/132C08K5/34924H01B3/441C08L2312/06C08L2203/202C08L2207/066C08L2201/08C08L23/06
Inventor 刘超杨培杰白帆孔维民
Owner NANJING ZHONGCHAO NEW MATERIALS