Nitrile rubber for UHV large oil-immersed transformers

Abstract

The invention belongs to the technical field of rubber, and mainly relates to a nitrile rubber used for an ultra-high voltage large oil-immersed transformer. The components and relative contents of the nitrile rubber are calculated by mass as follows: nitrile rubber NBR? 100 parts, 0.1-20 parts of stearic acid, 10-80 parts of carbon black, 10-80 parts of spray carbon black, 1-30 parts of zinc oxide, vulcanizing agent DTDM? 0.1-20 parts, vulcanizing agent TETD? 0.1-20, vulcanizing agent TMTD? 0.1-20, Accelerator CZ? 0.1-20 parts, anti-aging agent RD? 0-20 parts, antioxidant MB? 0.1-20 parts, anti-aging agent 4010? 0.1-20 parts, 1-20 parts of paraffin, 1-30 parts of coumarone, 5-50 parts of capryl decane. The nitrile rubber described in the invention has further improved compatibility with transformer oil, solves the problem of rubber gas production in the transformer, and ensures the stability and safety of the operation of the UHV large oil-immersed transformer.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a nitrile rubber suitable for use in ultra-high voltage large oil-immersed transformers. Background technique [0002] In my country's implementation of the development strategy of "power transmission from west to east", power transformers are one of the most important and key equipment for the safe operation of my country's interconnection grid. Economic losses are immeasurable. Therefore, ensuring the safe operation of large power transformers occupies an extremely important position in the power system. [0003] Nitrile rubber (NBR) is made by butadiene CH 2 =CH-CH=CH 2 with acrylonitrile CH 2 =CH-CN is a general-purpose non-crystalline oil-resistant rubber obtained by emulsion polymerization. Its production process is similar to that of emulsion polymerization of styrene-butadiene rubber. At present, some nitrile rubber in the world is produced on the shared equipment of em...

AI Technical Summary

Problems solved by technology

When the gas content exceeds a certain standard, it will affect the normal operation of the transformer, resulting in the decline of the insulation performance and thermal conductivity of the transformer oil, and serious consequences such as the breakdown of the transformer, which will become an unsafe factor for the operation of the transformer.

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