Oil-resistant acrylic rubber sealing pad for transformer and preparation method thereof

A rubber gasket and acrylate technology, applied in the field of gaskets, can solve the problems of aging and cracking of gaskets, poor oil resistance, oil leakage of transformers, etc. Effect

Inactive Publication Date: 2013-10-23
ANHUI CHUNHUI INSTR CABLE GROUP
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  • Abstract
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Problems solved by technology

The quality of the sealing rubber pad mainly depends on its oil resistance. If the oil resistance is poor, the aging speed will be faster, especially at hi

Method used

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  • Oil-resistant acrylic rubber sealing pad for transformer and preparation method thereof

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Embodiment Construction

[0014] An oil-resistant acrylic rubber gasket for transformers, made of the following raw materials (kg): acrylic rubber (AR-200) 50, chloroether rubber (C-55) 18, fluororubber (246) 10, modified Sepiolite powder 8, zinc borate 4, antimony trioxide 3, 2-hydroxyimidazoline 2, chlorinated paraffin 3, magnesium oxide 1, organic bentonite 10, calcined loess 4, ethylene bisoleic acid amide 1.5, calcium zinc Stabilizer 1.5, sulfur 3, dioctyl maleate 4, trioctyl trimellitate 2, antioxidant ODA 1, antioxidant TPPD 2, accelerator CZ 2, accelerator ZDC 2.

[0015] The modified sepiolite powder is prepared by the following method: soak the sepiolite in 0.5mol / L sulfuric acid solution for 2 hours, wash it, dry it at 130°C for 12h, then calcinate it at 350°C for 4h, take it out, and cool it , crushed and finely ground; then add dolomite powder equivalent to 8% of sepiolite weight, 4% magnesium silicate, 2% precipitated white carbon black, 3% polyisobutylene, 5% calcium lignosulfonate, mix ...

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Abstract

The invention discloses an oil-resistant acrylic rubber sealing pad for a transformer and a preparation method thereof. The oil-resistant acrylic rubber sealing pad is prepared by the following raw materials in parts by weight: 45-55 parts of acrylic rubber, 15-20 parts of epichlorohydrin rubber, 8-12 parts of fluorine rubber, 5-10 parts of modified sepiolite powder, 3-6 parts of zinc borate, 2-4 parts of antimonous oxide, 2-3 parts of 2-hydroxy imidazoline, 3-4 parts of chlorinated paraffin, 0.5-1.5 parts of magnesium oxide, 8-12 parts of organic bentonite, 3-5 parts of calcined loess, 1-2 parts of ethylene bis oleamide, 1-2 parts of calcium zinc stabilizer, 2-4 parts of sulfur, 3-4 parts of dioctyl maleate, 2-3 parts of trioctyl trimellitate, 1-2 parts of anti-aging agent ODA, 1-2 parts of anti-aging agent TPPD, 1-2 parts of accelerator CZ and 2-3 parts of accelerator ZDC (zinc diethyl dithiocarbamate). Acrylic rubber with excellent thermo-oxidative ageing resistance and oil resistance is used as main material and is mixed with epichlorohydrin rubber and fluorine rubber to improve such properties of the acrylic rubber as cold resistance, high temperature resistance, water resistance, tensile strength, and the like.

Description

technical field [0001] The invention relates to a gasket, in particular to an oil-resistant acrylate rubber gasket for a transformer and a preparation method thereof. Background technique [0002] Transformer leakage mostly occurs at the sealing rubber pad, which is mainly caused by aging and cracking of the sealing pad. The quality of the sealing rubber pad mainly depends on its oil resistance. If the oil resistance is poor, the aging speed will be faster, especially at high temperature, the aging speed will be faster, which will easily cause the sealing pad to age and crack, causing Transformer leaking oil. Therefore it has become a top priority to develop a kind of high oil-resistant transformer oil-resistant rubber gasket. Contents of the invention [0003] The object of the present invention is to address the deficiencies of the prior art, provide an oil-resistant acrylate rubber gasket for transformers and a preparation method thereof, and improve the oil resistanc...

Claims

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Application Information

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IPC IPC(8): C08L33/04C08L71/03C08L27/12C08K13/06C08K9/06C08K9/04C08K3/34C08K3/38C08K3/32C08K5/3445C08K3/22C08K5/20C08K3/06C08K5/11C08K5/12B29C35/02
Inventor 沈必亮
Owner ANHUI CHUNHUI INSTR CABLE GROUP
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