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A two-dimensional structure doped phase/EPDM rubber-based cable accessory material and its preparation method

A technology of EPDM rubber and EPDM, which is applied in the field of two-dimensional structure doped phase/EPDM rubber-based cable accessory materials and its preparation, can solve the problems of electric field distortion of accessory materials, and achieve good uniformity. The effect of changing the electric field, increasing the nonlinear conductivity, and maintaining flexibility

Active Publication Date: 2021-10-29
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the accumulation of space charge on the body and the interface in the EHV cable accessories, electric field distortion is easily generated inside the accessory material.

Method used

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  • A two-dimensional structure doped phase/EPDM rubber-based cable accessory material and its preparation method
  • A two-dimensional structure doped phase/EPDM rubber-based cable accessory material and its preparation method
  • A two-dimensional structure doped phase/EPDM rubber-based cable accessory material and its preparation method

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0030] A preparation method of a two-dimensional structure doped phase / EPDM rubber-based cable accessory material, comprising the steps of:

[0031] Step 1. Weigh a certain mass of zinc acetate, sodium hydroxide and deionized water, and configure them into zinc acetate solution and sodium hydroxide solution respectively, and slowly drop the configured sodium hydroxide solution into the zinc acetate solution under stirring conditions After the dropwise addition is completed, continue to stir for a period of time, and obtain a mixed liquid after standing still for use;

[0032] Step 2, separating the supernatant of the mixed liquid obtained in step 1, centrifuging the precipitate with a centrifuge, washing the obtained solid to neutrality, drying, and grinding with a mortar to obtain zinc oxide nanosheets for use;

[0033] Step 3, after placing the zinc oxide nanosheets prepared in step 2 in a muffle furnace for calcining, stand-by;

[0034] Step 4, weigh the zinc oxide nanoshe...

specific Embodiment approach 2

[0049] A preparation method of a two-dimensional structure doped phase / EPDM rubber-based cable accessory material, comprising the steps of:

[0050] Step 1. Weigh a certain mass of zinc acetate, sodium hydroxide and deionized water, and configure them into zinc acetate solution and sodium hydroxide solution respectively, and slowly drop the configured sodium hydroxide solution into the zinc acetate solution under stirring conditions After the dropwise addition is completed, continue to stir for a period of time, and obtain a mixed liquid after standing still for use;

[0051] Step 2, separating the supernatant of the mixed liquid obtained in step 1, centrifuging the precipitate with a centrifuge, washing the obtained solid to neutrality, drying, and grinding with a mortar to obtain zinc oxide nanosheets for use;

[0052] Step 3, after placing the zinc oxide nanosheets prepared in step 2 in a muffle furnace for calcining, stand-by;

[0053] Step 4, weigh the zinc oxide nanoshe...

specific Embodiment approach 3

[0057] According to the preparation method of a kind of two-dimensional structure doped phase / EPDM rubber-based cable accessory material described in specific embodiment 2, the mass ratio of zinc acetate, sodium hydroxide and deionized water in step 1 is (1.7~ 1.9): 1: (64-68).

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Abstract

A two-dimensional structure doped phase / EPDM rubber-based cable accessory material and a preparation method thereof belong to the field of DC cable accessory materials. The present invention first weighs zinc oxide nanosheets, EPDM rubber, and dicumyl peroxide, puts the weighed EPDM rubber into a double-roller mixer, and then mixes the zinc oxide nanosheets Put it into the double-roller mixer in batches to start training, and finally add dicumyl peroxide, mix until uniform, use a flat vulcanizer for zero-pressure heat preservation treatment, and then perform hot pressing, exhaust, and high-pressure treatment. The above-mentioned two-dimensional structure doped phase / EPDM rubber-based cable accessory material is prepared. The invention has a lower threshold field strength and a higher nonlinear coefficient, can better equalize the electric field, reduce the space charge at the interface of different materials of the cable accessories, and prolong the service life of the cable accessories.

Description

technical field [0001] The invention belongs to the field of DC cable accessory materials, in particular to a two-dimensional structure doped phase / EPDM rubber-based cable accessory material and a preparation method thereof. Background technique [0002] High-voltage direct current transmission technology has the advantages of narrow transmission corridor, unlimited transmission distance, large transmission capacity, not easily affected by capacitive current, and can realize asynchronous connection between power grids, etc., which has attracted more and more attention. However, due to the accumulation of space charges on the body and the interface in the EHV cable accessories, electric field distortion is easily generated inside the accessories. Therefore, the cable accessories part is the weakest part in the safe operation of high-voltage DC cables. In order to solve this problem, the more commonly used method at present is to add nonlinear materials whose conductivity var...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08K3/22C08K5/14
CPCC08K3/22C08K5/14C08K2003/2296C08K2201/011C08L2203/20C08L23/16
Inventor 迟庆国冯梦佳张天栋张昌海王暄
Owner HARBIN UNIV OF SCI & TECH