Device and method for preparing silicon rubber for improving quick dissipation of space charges

A space charge and preparation device technology, applied in the field of electrical engineering, can solve problems such as breakdown, local electric field distortion, space charge accumulation, etc., and achieve the effect of stable and controllable reaction process, simple production process and process

Inactive Publication Date: 2017-08-18
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In actual operation, the insulation of the DC cable system is in a unipolar high-voltage environment for a long time, which is likely to cause problems such as insulation aging and breakdown. Especially for DC cable accessories with complex structures, the space charge accumulation and local electric field distortion are particularly serious.

Method used

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  • Device and method for preparing silicon rubber for improving quick dissipation of space charges
  • Device and method for preparing silicon rubber for improving quick dissipation of space charges
  • Device and method for preparing silicon rubber for improving quick dissipation of space charges

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] The method steps of improving the preparation device of the silicone rubber that the space charge dissipates quickly in the present embodiment are as follows:

[0030] 1. Use a high-precision electronic balance to weigh 100phr (parts per hundreds of rubber) of silicone rubber matrix, 20phr of nano-silicon dioxide (SiO2), 5phr of hexamethyldisilazane, 1.3phr of polyvinyl silicone oil, 15phr Micron silicon carbide (SiC), 15phr nanometer silicon carbide (SiC) and 1.0phr bis-penta-curing agent, and place the above-mentioned silicone rubber matrix and filler in an oven at 60°C for later use.

[0031] 2. Turn on the heating power supply of the roller of the kneader to heat the roller, and keep the temperature of the roller at 40°C. Adjust the roller speed to 30r / min. Adjust the distance between the roller pitch and the baffle, put 100phr raw silicone rubber into one...

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Abstract

The invention discloses a device and a method for preparing silicon rubber for improving quick dissipation of space charges. The device comprises an electron balance, a drying box, a vulcanizing machine and a blending machine, wherein the blending machine is used for blending a silicon rubber substrate and filler and comprises a roll cylinder, a heating device, a rotation speed adjusting device and a timing device. The preparation method comprises the following steps of weighing the silicon rubber matrix and the filler by the electron balance, and adding into the drying box at the temperature of 60 DEG C for further use; sequentially adding the silicon rubber matrix, nanometer silicon dioxide, hexamethyl-disilazane, polyvinylsilicone oil, micrometer silicon carbide, nanometer silicon carbide and 2,5-dimethyl-2,5-di(tert-butyl peroxide)hexane into the roll cylinder, and blending; finally, obtaining a silicon rubber enhanced insulation material with quick dissipation of space charges in the vulcanizing machine. The method has the advantages that the dissipation process of the space charges in the silicon rubber insulation material is obviously improved; the influence on the self mechanical property of the silicon rubber enhanced insulation material in a cable accessory is avoided; the production technology and process are simple, and the reaction process is stable and controllable.

Description

technical field [0001] The invention relates to the field of electrical engineering, and in particular relates to an improved preparation device and method for preparing a silicone rubber reinforced insulating material for DC cable accessories with fast space charge dissipation. Background technique [0002] With the development of high-voltage power transmission technology, large-scale interconnected power grids pay more and more attention to the efficiency and safety of power transmission. At present, HVDC transmission technology is widely used due to its advantages of small footprint, low line loss, and relatively simple line structure. In actual operation, the insulation of the DC cable system is in a unipolar high-voltage environment for a long time, which is likely to cause problems such as insulation aging and breakdown. Especially for DC cable accessories with complex structures, the space charge accumulation and local electric field distortion are particularly serio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L83/07C08K13/02C08K3/36C08K5/544C08K3/34C08K5/14B29B7/00B29C35/02B29B13/06
Inventor 李忠磊杜伯学杨卓然
Owner TIANJIN UNIV
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