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Low-odor fast UV-LED ultraviolet cross-linked polyethylene insulation material and preparation method thereof

A UV-LED, cross-linked polyethylene technology, applied in the field of insulating materials, can solve the problems of low energy efficiency, high equipment cost, slow cross-linking speed, etc., and achieve good compatibility, less smoke at high temperature, and cross-linking reaction. The effect of increased speed

Inactive Publication Date: 2020-04-10
上海新上化高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the material uses a high-pressure mercury lamp as the light source for cross-linking, and the photoinitiator uses benzophenone with a strong odor, which has low energy efficiency, slow cross-linking speed, and high equipment cost.
In 2018, Ye Lei and others from Hefei Guangran Polymer Material Technology Co., Ltd. invented a new type of UV-LED ultraviolet cross-linked polyethylene cable material and its preparation method. The cross-linked polyethylene they invented increased the degree of cross-linking and The cross-linking time is shortened (up to 2 seconds), but the initiation auxiliary agent used is epoxybutane, which is volatile (boiling point 63°C), highly irritating, and flammable (flash point -22℃), storage difficulties and other issues

Method used

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  • Low-odor fast UV-LED ultraviolet cross-linked polyethylene insulation material and preparation method thereof
  • Low-odor fast UV-LED ultraviolet cross-linked polyethylene insulation material and preparation method thereof
  • Low-odor fast UV-LED ultraviolet cross-linked polyethylene insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019]

[0020]

[0021] The low-density polyethylene is Jinshan Petrochemical J182A, with a density of 0.918 and a melt index of 2.0g / 10min. Evapine rubber (EVM) is an EVM with a VA content of 45%, and a melt index of 3.0 g / 10 min. The metal inhibitor is bis(3,5-di-tert-butyl-4-hydroxyphenylpropionoyl)hydrazine. Extrude and granulate through a twin-screw extruder (length-to-diameter ratio: 40), at a temperature of 150°C, and dry after cooling to obtain a low-odor polyethylene insulating material that can be quickly cross-linked by UV-LED; JB / T10437- 2004 standard for testing, the results are shown in Table 1.

Embodiment 2

[0023]

[0024] The low-density polyethylene is Jinshan Petrochemical J182A, with a density of 0.918 and a melt index of 2.0g / 10min. The VA content of Evapine rubber (EVM) is 50%, and the melt index is 4.0g / 10min. The metal inhibitor is salicylamidophthalimide. Extrude and granulate through a twin-screw extruder (length-to-diameter ratio: 40), at a temperature of 150°C, and dry after cooling to obtain a low-odor cross-linked polyethylene insulating material that can be quickly cross-linked by UV-LED; JB / T 10437-2004 standard was tested, and the results are shown in Table 1.

[0025] Table 1 Example performance test results

[0026]

[0027]

[0028] Compared with the traditional UV-light cross-linked polyethylene insulating material, the low-odor cross-linked polyethylene insulating material prepared by the above two examples has low odor, low smoke generation, and is non-flammable and non-flammable. Explosive additives, cross-linking speed can be as fast as 1 sec...

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Abstract

The present invention provides a low-odor fast UV-LED ultraviolet cross-linked polyethylene insulation material, comprising following components shown in the specification by weight. The cross-linkedpolyethylene insulation material crosslinked by UV-LED ultraviolet radiation of a system of a novel photoinitiator and blended resin is provided. The material has characteristics of no flammable and explosive additives, low odor, low smoke, fast cross-linking, and the like, and is used for the insulation of low-voltage power cables and photoelectric composite cables.

Description

technical field [0001] The invention relates to an insulating material applicable to low-voltage power cables, in particular to a low-odor and fast UV-LED ultraviolet light cross-linked polyethylene insulating material and a preparation method thereof. Background technique [0002] In 1991, Qu Baojun and others from the University of Science and Technology of China and the Radiation Technology Company of the Chinese Academy of Sciences invented UV cross-linked polyethylene for the first time in China and applied it to the wire and cable baseline. The ultraviolet light cross-linked polyethylene insulating material is composed of polyethylene base material, photoinitiator, multifunctional crosslinking agent, primary antioxidant, auxiliary antioxidant, etc. -400nm, power density 50-200W / cm 2 Ultraviolet light can be uniformly irradiated for 5-20 seconds at a distance of 3-9cm, and the ultraviolet light crosslinking can be completed. However, the material uses a high-pressure ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L31/04
CPCC08L23/06C08L2207/066C08L2312/06C08L2203/20
Inventor 徐晓辉嵇建忠唐艳芳徐永卫
Owner 上海新上化高分子材料有限公司
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