Butyronitrile/acrylate rubber sealing gasket for transformer and preparation method thereof

A rubber gasket and acrylate technology, which is applied in the field of sealing materials, can solve the problems of affecting service life, low mechanical strength, and poor impact resistance, and achieve the effects of improving service life, improving mechanical properties, and excellent mechanical strength

Active Publication Date: 2014-03-26
ANHUI KELIN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing nitrile rubber gaskets have disadvantages such as low mech...

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] A nitrile / acrylate rubber gasket for transformers, made of the following raw materials by weight (kg): nitrile rubber (N41) 70, acrylate rubber (AR-200) 30, ethylene-vinyl acetate copolymer 12 , magnesium methacrylate 5, zinc stearate 2, carbon black N550 30, dicumyl peroxide 0.8, trimethylolpropane trimethacrylate 2, triallyl isocyanurate 2, chlorine Chemical paraffin 8, dibutyl phthalate 10, calcined clay 6, nano barite powder 8, composite filler 4, antioxidant MBZ 1.5, accelerator DPTT 0.5, accelerator NA-22 1;

[0013] The preparation method of the composite filler is as follows: a. Weigh wollastonite, pyrophyllite and attapulgite in a weight ratio of 4:3:1 and mix them evenly, calcinate at 510°C for 4 hours, and put in hydrochloric acid with a concentration of 18% after cooling to normal temperature Soak in the solution for 2 hours, filter, wash the above-mentioned ore mixture with distilled water until neutral, dry, pulverize, and pass through a 400-mesh sie...

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PUM

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Abstract

The invention discloses a butyronitrile/acrylate rubber sealing gasket for a transformer and a preparation method thereof. The butyronitrile/acrylate rubber sealing gasket is prepared from the following raw materials in parts by weight: 60-80 parts of butadiene-acrylonitrile rubber, 20-40 parts of acrylic rubber, 10-15 parts of ethylene-vinyl acetate copolymer, 4-6 parts of magnesium methacrylate, 2-3 parts of zinc stearate, 25-35 parts of carbon black N550, 0.5-1 part of dicumyl peroxide, 2-3 parts of trimethylolpropane trimethacrylate, 1.5-2.5 parts of triallyl isocyanurate, 5-10 parts of chlorinated paraffin, 10-15 parts of dibutyl phthalate, 4-8 parts of calcined clay, 5-10 parts of nanometer barite powder, 3-6 parts of composite filler, 1-2 parts of anti-aging agent MBZ, 0.5-1 part of accelerant DPTT and 0.5-1 part of accelerant NA-22. The prepared sealing gasket has the performances of excellent mechanical strength, compression resilience, high-temperature ageing resistance, impact resistance, wear resistance and oil resistance, and the service life of the butyronitrile/acrylate rubber sealing gasket is greatly prolonged.

Description

technical field [0001] The invention relates to a nitrile / acrylate rubber sealing gasket for transformers and a preparation method thereof, belonging to the technical field of sealing materials. Background technique [0002] Nitrile rubber (NBR) has excellent oil resistance, heat resistance, chemical resistance and solvent resistance, so it is widely used in oil-filled transformer gaskets. However, the existing nitrile rubber gaskets have disadvantages such as low mechanical strength and poor impact resistance, which seriously affect their service life. Contents of the invention [0003] The purpose of the present invention is to provide a kind of nitrile / acrylic ester rubber gasket for transformer with high mechanical strength and high impact resistance and a preparation method thereof. [0004] The technical scheme that the present invention adopts is as follows: [0005] A nitrile / acrylate rubber gasket for transformers, made of the following raw materials in parts b...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L33/04C08L23/08C08K13/02C08K5/098C08K3/04C08K5/14C08K5/103C08K5/3492C08K5/12C08K3/34C08K3/30B29C35/02
Inventor 周俊徐淑平
Owner ANHUI KELIN ELECTRONICS
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