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A kind of silicone rubber insulating compound applied to European series medium and high voltage cable accessories and preparation method thereof

A medium and high voltage cable and silicone rubber insulation technology, which is applied in the direction of rubber insulators and organic insulators, can solve problems such as low electrical performance, odor of products, and reduced breakdown voltage strength of insulating rubber, and achieve low product defect rate. Effect

Active Publication Date: 2015-08-12
深圳市罗庚电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The Chinese patent with the application number 201010591839.9 describes a silicone rubber for composite insulators. The product has good mechanical properties, but it needs to be re-milled when used. Adding too many additives will cause the product to smell, and the electrical performance is not high. It is expected that the material will reduce the breakdown voltage strength of the insulating rubber, which can only reach 18KV / MM

Method used

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  • A kind of silicone rubber insulating compound applied to European series medium and high voltage cable accessories and preparation method thereof
  • A kind of silicone rubber insulating compound applied to European series medium and high voltage cable accessories and preparation method thereof
  • A kind of silicone rubber insulating compound applied to European series medium and high voltage cable accessories and preparation method thereof

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Effect test

Embodiment 1

[0036] A silicone rubber insulating rubber compound used in European series medium and high voltage cable accessories. The components of the insulating rubber compound are as follows, all in parts by mass:

[0037]

[0038]

[0039] A kind of preparation method for the silicone rubber insulating compound of European type series medium and high voltage cable accessories as mentioned above, comprises the following steps:

[0040] 1) Feeding

[0041] Start the kneader, after heating up to 140°C, add 100 parts of methyl vinyl silicone rubber raw rubber by mass fraction, 0.3 parts of polytetrafluoroethylene powder prefabricated release agent, 0.8 parts of general furnace black N660, indirect 8 parts of Zinc Oxide in closed kneading chamber; after 5 minutes, when the temperature rises to 135°C, quickly add 60 parts of aluminum hydroxide and 12.5 parts of fumed white carbon black; Add 60 parts of aluminum hydroxide, 12.5 parts of fumed white carbon black, 1.2 parts of vinyl tr...

Embodiment 2

[0049] A silicone rubber insulating rubber compound used in European series medium and high voltage cable accessories. The components of the insulating rubber compound are as follows, all in parts by mass:

[0050]

[0051]

[0052] A kind of preparation method for the silicone rubber insulating compound of European type series medium and high voltage cable accessories as mentioned above, comprises the following steps:

[0053] 1) Feeding

[0054] Start the kneader, heat up to 140°C, add 100 parts of methyl vinyl silicone rubber raw rubber by mass fraction, 0.3 parts of polytetrafluoroethylene powder prefabricated release agent, 0.8 parts of general furnace black N660, indirect method 5 parts of zinc oxide; kneading in a closed kneading chamber. After 8 minutes, when the temperature rises to 140°C, quickly add 65 parts of aluminum hydroxide and 10 parts of fumed silica; 65 parts of aluminum hydroxide, 10 parts of fumed silica, 1.5 parts of vinyl tris(β-methoxyethoxy) si...

Embodiment 3

[0062] A silicone rubber insulating rubber compound used in European series medium and high voltage cable accessories. The components of the insulating rubber compound are as follows, all in parts by mass:

[0063]

[0064]

[0065] A kind of preparation method for the silicone rubber insulating compound of European type series medium and high voltage cable accessories as mentioned above, comprises the following steps:

[0066] 1) Feeding

[0067] Start the kneader, heat up to 140°C, add 100 parts of methyl vinyl silicone rubber raw rubber by mass fraction, 0.1 part of polytetrafluoroethylene powder prefabricated release agent, 2 parts of general furnace black N6602, and indirect oxidation 15 parts of zinc; kneading in a closed kneading chamber. After 8 minutes, when the temperature rises to 140°C, quickly add 40 parts of aluminum hydroxide and 2.5 parts of fumed silica; close the kneading chamber and continue to heat up to 140°C, add hydrogen 40 parts of alumina, 2.5 p...

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Abstract

The invention belongs to the fields of special rubber technologies and medium and high voltage electrical equipment, is thorough improvement on the prior art, and in particular relates to a silicone rubber insulation material applied to high voltage cable accessories in European series and a preparation method for the material. The material comprises the following components in part by mass: 100 parts of crude silicone rubber, 5 to 25 parts of reinforcing agent, 80 to 130 parts of flame retardant, 0.1 to 0.8 part of internal release agent, 0.8 to 2 parts of masterbatch, 0.8 to 2 parts of anti-structuring control agent, 5 to 15 parts of zinc oxide, 1 to 2 parts of silane coupling agent, 1 to 5 parts of hydroxy silicone oil and 0.8 to 3 parts of vulcanizing agent. Compared with the conventional ethylene propylene diene monomer (EPDM) rubber, the material has the advantages that tracking resistance and electric corrosion loss can reach TMA4.5, and the material has lasting hydrophobicity and high dielectric constant, joint strength and wet electrical property, can be subjected to injection molding, avoids the phenomenon that an electric field is easily concentrated because EPDM is non-uniformly distributed, and is high in vulcanizing speed and efficiency, and cost is saved.

Description

technical field [0001] The invention belongs to the field of special rubber technology and medium and high voltage electrics, and is an improvement by introducing a new material to replace traditional ethylene-propylene rubber, and specifically relates to a silicone rubber insulating rubber material for European-style medium and high-voltage cable accessories and a preparation method thereof. technical background [0002] In the electrical cable industry, all cable accessories that meet the DIN47636 standard are referred to as European cable accessories. The insulation material used in the cable accessories used in the original industry is ethylene-propylene-diene rubber (EPDM). But in use, it is found that silicone rubber is more resistant to high temperature, UV and oxidation, stronger hydrophobicity, arc resistance and better affinity to the human body. [0003] The use of silicone rubber instead of traditional EPDM insulation materials is mainly aimed at the use of a ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/06C08K13/02C08K3/36C08K3/22C08K3/04C08K5/5445C08K5/14H01B3/28
Inventor 全超
Owner 深圳市罗庚电气有限公司
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