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EVALUATION ON SYNERGISTIC ANTIWEAR PROPERTIES OF ORGANIC ANTIMONY COMPOUNDS AS LUBRICANT ADDITIVE

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Author(s): Jian-Qiang Hu | Li-Ming Hu | Jun-Bing Yao

Journal: Petroleum and Coal
ISSN 1337-7027

Volume: 48;
Issue: 2;
Start page: 37;
Date: 2006;
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Keywords: antiwear properties | antimony dialkyldithiophosphates | organic tin friction reducer | chlorinated paraffin | sulfurized isobutylene

ABSTRACT
Four ball tester was used to evaluate the antiwear and extreme pressure properties of antimony dialkyldithiophosphates (SbDDP),organic tin friction reducer (SnSO), chlorinated paraffin (T 301), sulfurized isobutylene (T 321), and their synergistic effects. The synergistic scuffing resistance of SbDDP with T 301 and T 321 was also evaluated. The results show that SbDDP exhibit better antiwear synergism with SnSO, T 301 and T 321 respectively, especially, synergistic effect of SbDDP with T 301 is the best. Moreover, data from scuffing resistance show SbDDP with T 321 exhibits good synergistic effect´╝îbut SbDDP with T 321 exhibits antagonistic effect. However, the combination of SbDDP with T 301 and T 321 exhibits good synergistic antiwear effect and scuffing resistance, especially, the synergistic effect was very obvious when the concentration of active elements attains optimal proportion.
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