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220 kV crosslinkable polyethylene insulating material with low by-product content and preparation method of 220 kV crosslinkable polyethylene insulating material

A cross-linked polyethylene, 220kv technology, applied in the direction of insulators, organic insulators, plastic/resin/wax insulators, etc., can solve by-products can not be discharged in time, can not meet the design requirements of 220kV cable insulation materials, pinholes and other problems

Inactive Publication Date: 2017-01-04
ANHUI CHUZHO DEWEI NEW MATERIAL +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The added amount of peroxide cross-linking agent in this formula system is relatively high, and due to the influence of molecular structure, some by-products produced by peroxide cross-linking agent during processing cannot be discharged in time, resulting in impurity content in the prepared product Too high, internal pinholes and other problems cannot meet the design requirements of 220kV cable insulation material manufacturing

Method used

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  • 220 kV crosslinkable polyethylene insulating material with low by-product content and preparation method of 220 kV crosslinkable polyethylene insulating material
  • 220 kV crosslinkable polyethylene insulating material with low by-product content and preparation method of 220 kV crosslinkable polyethylene insulating material

Examples

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Embodiment 1

[0019] This embodiment provides a 220kV cross-linkable polyethylene insulating material with low by-products, including the following raw material components:

[0020] 100 parts of low-density polyethylene (density 0.916g / cm 3 , melt flow index is 1.8g / 10min),

[0021] 0.5 parts of 4,4'-thiobis(6-tert-butyl-3-methylphenol),

[0022] 1.0 parts of dicumyl peroxide,

[0023] Liquid polybutadiene (viscosity is 1100mPas) 3.0 parts;

[0024] The above 220kV cross-linkable polyethylene insulating material with low by-products is prepared by the following method: in a closed and purified production environment, low-density polyethylene, antioxidant, cross-linking agent and cross-linking accelerator are mixed according to the formula After mixing, homogenizing, filtering, and removing volatile matter, cooling and dicing, and clean packaging, a 220kV cross-linkable polyethylene insulating material with low by-products can be obtained (the steps of mixing, homogenizing, and filtering ...

Embodiment 2

[0026] This example provides a 220kV cross-linkable polyethylene insulating material with low by-products, the preparation method of which is the same as that in Example 1, except that it includes the following raw material components:

[0027] 100 parts of low-density polyethylene (density 0.925g / cm 3 , melt flow index is 2.5g / 10min),

[0028] 0.8 parts of 3,5-bis(1,1-dimethylethyl)-4-hydroxyphenylpropionic acid thiodi-2,1-ethylene glycol ester,

[0029] 0.5 parts of benzoyl peroxide,

[0030] Liquid polyisoprene (viscosity of 900mPas) 2 parts.

Embodiment 3

[0032] This example provides a 220kV cross-linkable polyethylene insulating material with low by-products, the preparation method of which is the same as that in Example 1, except that it includes the following raw material components:

[0033] 100 parts of low-density polyethylene (density 0.922g / cm 3 , melt flow index is 2.3g / 10min),

[0034] 0.8 parts of 3,5-bis(1,1-dimethylethyl)-4-hydroxyphenylpropionic acid thiodi-2,1-ethylene glycol ester,

[0035] 0.5 parts of benzoyl peroxide,

[0036] 1.8 parts of liquid polytriallyl isocyanurate (viscosity is 700mPas).

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Abstract

The invention relates to a 220 kV crosslinkable polyethylene insulating material with low by-product content and a preparation method of the 220 kV crosslinkable polyethylene insulating material. The raw material formula of the 220 kV crosslinkable polyethylene insulating material comprises components in parts by weight as follows: 100 parts of low-density polyethylene, 0.1-1 part of an antioxidant, 0.1-2.0 parts of a crosslinking agent and 1.0-3.0 parts of a crosslinking accelerator. By means of the formula formed by specific low-density polyethylene, the antioxidant, the crosslinking agent and the crosslinking accelerator, the problems of overhigh impurity content, appearance of pin holes inside and the like of prepared products can be solved, and requirements for manufacturing 220 kV cable insulating materials can be met.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to a vinyl chloride insulating material, in particular to a 220kV low by-product crosslinkable polyethylene insulating material and a preparation method thereof. Background technique [0002] Usually, the production method of polyvinyl chloride cable materials for automobile wires is based on polyvinyl chloride resin, adding plasticizers, stabilizers and processing aids, and processed by special mixing equipment, although it can meet the basic needs of automobile line production , but there are problems of strong odor, poor scraping performance and unsatisfactory processing performance. [0003] Due to the special use position of the automobile wire, the mutual friction between the wire and the wire cannot be avoided during the operation of the automobile. Once the plastic sheath is worn out, it will directly lead to a short circuit and cause traffic accidents. In addition, the car co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L47/00C08K5/14C08K5/375C08K5/134C08K5/3492H01B3/44
CPCC08L23/06C08K5/14C08K5/34924C08K5/375C08K2201/014C08L2203/202C08L2207/066H01B3/441C08L47/00C08K5/1345
Inventor 曹渊何军戴红兵陈敏涂必冬张丽本曹丹陆威朱花竹栾珊珊
Owner ANHUI CHUZHO DEWEI NEW MATERIAL
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