Aging-resistant insulating sheath material for transformer and preparation method thereof

Abstract

The invention discloses an aging-resistant insulating sheath material for a transformer and a preparation method thereof. The aging-resistant insulating sheath material is prepared from 50-70 weight parts of methyl vinyl silicone rubber, 20-30 weight parts of butadiene rubber, 15-20 weight parts of low density polyethylene, 20-30 weight parts of precipitated silica, 3-5 weight parts of zinc oxide, 1-2 weight parts of stearic acid, 2-3 weight parts of dicumyl peroxide, 1-2 weight parts of sulfur, 1-2 weight parts of an antiager OD, 1-2 weight parts of a promoter TMTD, 4-8 weight parts of diphenylsilanediol, 5-10 weight parts of epoxidized soybean oil, 8-12 weight parts of triethyl O-acetylcitrate, 3-6 weight parts of hydroxyl silicone oil, 5-10 weight parts of zinc borate, 4-8 weight parts of antimonous oxide, 10-15 weight parts of nanometer potassium feldspar, 5-10 weight parts of nanometer aluminum oxide, and 3-6 weight parts of a composite filling material. The aging-resistant insulating sheath material has excellent aging resistance, excellent acid and alkali resistance, excellent smoke resistance, excellent ozone resistance, excellent weather resistance, good insulating properties, and good physical and mechanical properties, can be used out of doors for a long time, can resist strong acid, strong alkali and salt spray, can be exposed to the sun and rain, does not deform and crack, and is durable.

Description

technical field [0001] The invention relates to an aging-resistant insulating sheath material for a transformer and a preparation method thereof, belonging to the technical field of sealing materials. Background technique [0002] The transformer insulating sheath is used for the shielding insulation protection of the surface of the transformer bus bridge tube parent, which can effectively prevent the exposed transformer bus bridge from being accidentally touched by humans, small animals such as birds and animals or foreign objects. Electrical accidents caused by condensation flashover, pollution flashover, and icicle sticky snow, and prevent power outage accidents caused by salt spray, acid rain, and chemical gas corrosion that damage the inlet and outlet lines of transformers. However, the existing insulating sheath is prone to aging and cracking due to long-term exposure to sunlight, salt spray, and acid rain corrosion, resulting in accidents such as short circuits, elect...

AI Technical Summary

Problems solved by technology

However, the existing insulating sheath is prone to aging and cracking due to long-term sunlight exposure, salt spray, and acid rain corrosion, resulting in accidents such as short circuits, electric leakage, and power outages, resulting in huge economic losses.

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