| Development of O-ring in Engine Fuel System of Geer 130 Model Automobile |
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| DOI： |
| Key Words: O-ring；NBR；cold resistant plasticizer；curing system |
| Author Name | Affiliation | | Sun Jijie | Research Institute of Tieling Rubber Goods Factory |
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| Abstract: |
| An adverse effect of two active additive containing oils M-8Bl and M-8T2K was found on NBR-18 0-ring in the engine fuel system.The resistance of O-ring to the two oils could be improved by the adjustment of curing system （sulfur 0.3 phr；accelerator CZ l.5 phr；accelerator M 0.5 phr；DCP 2.0 phr） and carbon black level （HAF 55 phr；sprayed carbon black 40 phr）.In addition，25 phr of cold resistant plasticizer （dibutyl phthalate 10 phr；dioctyl sebacate 15 phr） were added into NBR compound to improve the cold resistance of the compound and lower its brittle temperature to -65℃. |
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