Rubber material for transformer sealing ring and preparation method thereof

Abstract

The invention belongs to the technical field of sealing materials and particularly relates to a rubber material for a sealing ring of a transformer and a preparation method of the rubber material. The rubber material is prepared from the following raw material in parts by weight: 50-70 parts of nitrile rubber, 20-30 parts of acrylic rubber, 5-10 parts of epichlorohydrin rubber, 3-8 parts of wood fibers, 5-10 parts of nanometer titania, 15-25 parts of a fortifier, 1-5 parts of an anti-aging agent, 1-3 parts of an accelerate, 1-3 parts of sulfur, 3-6 parts of zinc oxide, 4-8 parts of stearic acid, 3-6 parts of asphalt, 1-3 parts of chlorinated paraffin, 10-15 parts of a plasticizer and 5-15 parts of a cross-linking agent. The rubber material for the sealing ring of the transformer is high in strength, small in compressive deformation and excellent in anti-aging performance.

Description

technical field

[0001] The invention belongs to the technical field of sealing materials, and in particular relates to a rubber material for a transformer sealing ring and a preparation method thereof. Background technique

[0002] Transformer sealing ring plays an important role in preventing oil leakage. At present, most of the commonly used gaskets are rubber gaskets, but the existing rubber gaskets have poor oil resistance and fast aging, especially at high temperatures, which can easily cause sealing The pad is aging and cracked, causing the transformer to leak oil.

[0003] Chinese patent application CN103627048B discloses a pressure-resistant, wear-resistant, corrosion-resistant transformer sealing ring and its production method, using nitrile rubber as the main raw material, forming a synthetic rubber with high-strength reclaimed rubber and coumarone resin, which has excellent Oil resistance, abrasion resistance and heat resistance, supplemented by carbon black, cer...

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