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A kind of high-humidity resistant insulating sheath material for transformer and preparation method thereof

An insulating sheath and high-humidity-resistant technology, applied in the field of sealing materials, can solve the problems of economic loss, leakage, aging and cracking of the transformer insulating sheath, etc., and achieve the effect of long service life and improved high-humidity resistance.

Active Publication Date: 2015-09-30
ANHUI KELIN ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various equipment of the transformer will produce different degrees of discharge phenomenon when it is running in humid air, and ozone will be generated along with the discharge phenomenon. The transformer insulation sheath will be prone to aging and cracking due to long-term ozone pollution, resulting in short circuit, Leakage, power failure and other accidents, resulting in huge economic losses

Method used

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  • A kind of high-humidity resistant insulating sheath material for transformer and preparation method thereof

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Embodiment Construction

[0012] A high-humidity resistant insulating sheath material for transformers, which is made of the following raw materials (kg): tetrapropylene fluorine rubber (aflas100H) 90, EPDM rubber (Germany LANXESS 3950) 30, nitrile rubber (N240S ) 15, zinc oxide 4, magnesium oxide 3, stearic acid 1.5, dibutyltin dilaurate 2, palm wax 3, carbon black N99025, dibutyl phthalate 12, paraffin oil 8, aluminum silicate 20, nano Diatomaceous earth 15, composite filler 6, diphenylmethane bismaleimide 2, insoluble sulfur 4, accelerator TETD1, anti-aging agent 40101.5, antioxidant 47201.5;

[0013] The preparation method of the composite filler is as follows: a. Weigh bauxite, sepiolite, illite and kaolin in a weight ratio of 7:5:4:1 and mix them evenly, calcinate at 530°C for 2h, cool to normal temperature and put Stir in 15% sulfuric acid solution at 1500rpm for 2 hours, filter, wash until neutral, dry, pulverize, and pass through a 400 mesh sieve; b. Add water to the sieved powder and stir to ...

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Abstract

The invention discloses a high-humidity-resistant insulating sheath material for a transformer and a preparation method thereof. The sheath material is prepared from the following raw materials in parts by weight: 80-100 parts of tetrafluoroethylene-propylene rubber, 25-35 parts of ethylene-propylene-diene monomer, 10-15 parts of nitrile rubber, 3-6 parts of zinc oxide, 2-4 parts of magnesium oxide, 1-2 parts of stearic acid, 1.5-2.5 parts of dibutyltin dilaurate, 2-4 parts of palm wax, 20-30 parts of carbon black N990, 10-15 parts of dibutyl phthalate, 5-10 parts of paraffin oil, 15-25 parts of alumina silicate, 10-15 parts of nanometer diatomite, 4-8 parts of a composite filling material, 2-3 parts of bismaleimide, 3-5 parts of insoluble sulphur, 1-1.5 parts of promoter TETD, 1-2 parts of antiager 4010 and 1-2 parts of an antioxidant. The sheath material of the invention employs the rubber main material with relatively good ozone resistance, and also employs the antioxidant, the composite filling material and the like with good ozone resistance in the formula, so that the sheath material is improved in high humidity resistance and ozone resistance while the good insulating performance and the physical mechanical properties of the sheath material are guaranteed.

Description

technical field [0001] The invention relates to a high-humidity 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. Various equipment of the transformer will produce different degrees of discharge phenomenon when it is running in humid air, and ozone will be generated along with the discharge phenomenon. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08L23/16C08L9/02C08K13/06C08K3/22C08K5/09C08K3/04C08K5/12C08K5/01C08K3/34
Inventor 周俊徐淑平
Owner ANHUI KELIN ELECTRONICS