Modified acrylonitrile butadiene packing material and preparation method thereof

A technology of nitrile rubber and sealing material, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as failure, swelling, softening, etc., and achieve low product cost, good thermal stability and oil resistance, and good economic benefits. Effect

Inactive Publication Date: 2008-03-05
安阳市鑫河科技研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using dimethyl ether, the rubber parts in the existing liquefied gas equipment and automobile fuel supply system will have problems such as swelling, softening, cracking and failure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Embodiment 1, modified nitrile rubber sealing material and preparation method thereof, (1) weighing: weigh respectively raw nitrile rubber 100kg, carbon black 50kg, zinc oxide 4kg, stearic acid 1kg, antioxidant 2,2, 1.5kg of 4-trimethyl-1,2-dihydroquinoline, 20kg of dioctyl phthalate, 0.2kg of sulfur, 1.5kg of accelerator low molecular weight polyethylene; (2) Internal mixing: at 50-60°C Add the weighed raw nitrile rubber into the internal mixer, and then add the weighed carbon black, zinc oxide, stearic acid, anti-aging agent 2,2,4-trimethyl-1,2 - Dihydroquinoline, dioctyl phthalate, banburying for 9 minutes, discharging, the discharging temperature is below 120°C; (3) Opening: Add the banbury rubber prepared according to (2) to the open-mixing On the machine, add the sulfur weighed according to (1) and the accelerator low molecular weight polyethylene, mix evenly, and then release the tablet, vulcanize at 160°C for 3 minutes, and press the obtained banbury rubber into...

Embodiment 2

[0007] Embodiment 2, modified nitrile rubber sealing material and preparation method thereof, (1) weighing: weigh raw nitrile rubber 100kg, carbon black 60kg, zinc oxide 5kg, stearic acid 1.5kg, antioxidant 2,2 respectively , 2kg of 4-trimethyl-1,2-dihydroquinoline, 23kg of dioctyl phthalate, 0.7kg of sulfur, 2kg of accelerator low molecular weight polyethylene; (2) Internal mixing: at 50-60°C Under high temperature, add raw nitrile rubber into the internal mixer, then add carbon black, zinc oxide, stearic acid, anti-aging agent 2,2,4-trimethyl-1,2-dihydroquinoline, phthalate Dioctyl formate, banburying for 10 minutes, discharging, the discharging temperature is below 120°C; (3) Open milling: add the banbury rubber prepared according to (2) to the open mixer, add the weight according to (1) The sulfur and the accelerator low molecular weight polyethylene were mixed evenly, and the sheets were removed, vulcanized at 170°C for 4 minutes, and the obtained banbury rubber was press...

Embodiment 3

[0009] Modified nitrile rubber sealing material and preparation method thereof, (1) Weighing: respectively weigh 100kg of raw nitrile rubber, 70kg of carbon black, 6kg of zinc oxide, 2kg of stearic acid, and 2,2,4-trimethyl Base-1,2-dihydroquinoline 2.5kg, dioctyl phthalate 25kg, sulfur 0.8kg, accelerator low molecular weight polyethylene 2.5kg; (2) Internal mixing: at a temperature of 50-60°C, Add raw nitrile rubber into the internal mixer, then add carbon black, zinc oxide, stearic acid, anti-aging agent 2,2,4-trimethyl-1,2-dihydroquinoline, dioctyl phthalate Ester, banburying for 11min, discharging, the discharging temperature is below 120°C; (3) Open milling: add the banbury rubber prepared according to (2) to the open mixer, add the sulfur and Accelerator low-molecular-weight polyethylene, after mixing evenly, take off the sheet, vulcanize at 180°C for 5 minutes, and press the obtained banbury rubber into a test piece with a flat vulcanizer; Rubber mixing is tested accor...

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PUM

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Abstract

The modified nitrile butadiene rubber sealing material and its preparation process belong to the field of rubber polymer material technology. The modified nitrile butadiene sealing material is prepared with nitrile butadiene rubber, carbon black, zinc oxide, stearic acid, antiager 2, 2, 4-trimethyl-1, 2-dihydro quinoline, dioctyl sebacate, sulfur and promoter paraffin in certain weight proportion, and through compounding material, banburying, roll mixing, vulcanizing and other technological steps. It is applied in making rubber parts in apparatus for storing, transporting, loading and unloading methane, liquefied gas and other fuel, and automobile engine. It has high elasticity, high heat stability, high oil resistance and other advantages.

Description

1. Technical field [0001] A modified nitrile rubber sealing material and a preparation method thereof belong to the technical field of preparation of rubber polymer composite materials. It is a modified nitrile rubber sealing material with nitrile rubber as the main carrier. The product formula and preparation method are determined by adding different rubber additives and improving the process flow and process parameters. 2. Background technology [0002] As a new type of energy fuel, dimethyl ether can replace liquefied petroleum gas as domestic fuel, and can also be used as vehicle fuel. When dimethyl ether is used, rubber parts in existing liquefied gas equipment and automotive fuel supply systems will swell, soften, crack, and then fail. Nitrile rubber is a polymer formed by the emulsion copolymerization of butadiene and acrylonitrile. Nitrile rubber is famous for its excellent oil resistance, which is second only to polysulfide rubber, acrylic rubber and fluororubber. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10C08L9/02C08K5/3437C08K3/22C08K3/06C08K5/10C08L23/06
Inventor 高满红付瑞平席永安王文红张建民
Owner 安阳市鑫河科技研究院有限责任公司
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