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Modified EPT rubber packing material and preparation method thereof

A technology of EPDM rubber and sealing materials, applied in chemical instruments and methods, and other chemical processes, can solve problems such as swelling, softening, and cracking, and achieve low product cost, good thermal stability, and oil resistance. The effect of good economic benefits

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 EPDM sealing material and preparation method thereof, (1) Weighing: Weigh respectively raw EPDM rubber 100kg, carbon black 50kg, zinc oxide 4kg, stearic acid 0.5kg, anti-aging Agent 2,2,4-trimethyl-1,2-dihydroquinoline 1.5kg, dioctyl sebacate 8kg, sulfur 0.2kg, accelerator paraffin 2kg; (2) banburying: at 50-60 At a temperature of ℃, add raw EPCN rubber into the internal mixer, and then add carbon black, zinc oxide, stearic acid, anti-aging agent 2,2,4-trimethyl-1,2-dihydroquinone in sequence Phenylline, dioctyl sebacate, banburying 9min, discharging, the discharging temperature is below 120 ℃; (3) open refining: add the banbury rubber that makes according to (2) on the open mixer, add according to ( 1) The weighed sulfur and the accelerator paraffin are mixed evenly, and the tablets are taken out, vulcanized at 160°C for 3 minutes, and the obtained banbury rubber is pressed into test pieces by a flat vulcanizer; (4) Quick inspection: according to...

Embodiment 2

[0007] Embodiment 2, modified EPDM sealing material and preparation method thereof, (1) Weighing: Weigh respectively raw EPDM rubber 100kg, carbon black 60kg, zinc oxide 5kg, stearic acid 1kg, antioxidant 2,2,4-trimethyl-1,2-dihydroquinoline 2kg, dioctyl sebacate 10kg, sulfur 0.5kg, accelerator paraffin 2.5kg; (2) banburying: at 50~60℃ Add the raw EPCN rubber into the internal mixer at a temperature above 100°C, and then add carbon black, zinc oxide, stearic acid, and anti-aging agent 2,2,4-trimethyl-1,2-dihydroquinoline in sequence , Dioctyl sebacate, banburying for 10min, discharging, the discharging temperature is below 120°C; (3) Open milling: add the banbury rubber prepared according to (2) to the open mixer, and add according to (1 ) The weighed sulfur and the accelerator paraffin were mixed evenly, and then the tablets were taken off, vulcanized at 170°C for 4 minutes, and the obtained banbury rubber was pressed into test pieces by a flat vulcanizer; The obtained banbu...

Embodiment 3

[0008] Embodiment 3, modified EPDM sealing material and preparation method thereof, (1) Weighing: Weigh respectively raw EPDM rubber 100kg, carbon black 70kg, zinc oxide 6kg, stearic acid 1.5kg, anti-aging Agent 2,2,4-trimethyl-1,2-dihydroquinoline 2.5kg, dioctyl sebacate 12kg, sulfur 0.8kg, accelerator paraffin wax 3kg; (2) banburying: at 50-60 At a temperature of ℃, add raw EPCN rubber into the internal mixer, and then add carbon black, zinc oxide, stearic acid, anti-aging agent 2,2,4-trimethyl-1,2-dihydroquinone in sequence Phenylline, dioctyl sebacate, banburying 11min, discharging, the discharging temperature is below 120 ℃; (3) open refining: add the banbury rubber that makes according to (2) on the open mixer, add according to ( 1) The weighed sulfur and accelerator paraffin are mixed evenly, and then the tablets are taken out, vulcanized at 180°C for 5 minutes, and the obtained banbury rubber is pressed into test pieces by a flat vulcanizer; (4) Quick inspection: accor...

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PUM

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Abstract

The modified ethylene propylene terpolymer sealing material and its preparation process belong to the field of rubber polymer material technology. The modified ethylene propylene terpolymer sealing material is prepared with ethylene propylene terpolymer, 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 EPDM sealing material and a preparation method thereof belong to the technical field of preparation of rubber polymer composite materials. It is a kind of modified EPDM rubber sealing material with EPDM as the main carrier, by adding different rubber additives and improving the process flow and process parameters to determine the product formula and preparation method. 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. EPDM rubber is a terpolymer of ethylene, propylene and non-conjugated dienes. EPDM rubber has excellent ozone resistance, aging resistance, corrosion resistance, heat resistance and weather resistance. Because there are no polar groups in the molecular...

Claims

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Application Information

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IPC IPC(8): C09K3/10C08L23/16C08K5/3437C08K5/10C08K3/06C08K3/04C08L91/06
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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