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Antiwear additive derived from soybean oil and boron utilized in a gear oil formulation / Brajendra K. Sharma in Industrial & engineering chemistry research, Vol. 51 N° 37 (Septembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 37 (Septembre 2012) . - pp. 11941–11945 Titre : Antiwear additive derived from soybean oil and boron utilized in a gear oil formulation Type de document : texte imprimé Auteurs : Brajendra K. Sharma, Auteur ; Kenneth M. Doll, Auteur ; Glenn L. Heise, Auteur Année de publication : 2012 Article en page(s) : pp. 11941–11945 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Lubricant  additives Résumé : The synthesis of lubricant additives based on boron and epoxidized soybean oil are presented. These additives are made from a simple patent pending method involving a ring-opening reaction of the epoxidized oil. A couple of these borates were tested in soybean oil, polyalpha olefin basestock, group III basestock, and hexadecane. An aromatic additive was able to increase the oxidation onset of the basestocks by 14, 52, 48, and 49 °C, respectively, when used at 2% wt. The other additive was shown to reduce the wear scar diameter in a friction test when used in soybean oil basestock, from 0.61 mm down to 0.41 mm. These additives were also tested in a gear oil blend, and shown to reduce both wear and oxidation. They were also compatible with a popular additive, additive zinc dialkyl dithiophosphate. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie301519r [article] Antiwear additive derived from soybean oil and boron utilized in a gear oil formulation [texte imprimé] / Brajendra K. Sharma, Auteur ; Kenneth M. Doll, Auteur ; Glenn L. Heise, Auteur . - 2012 . - pp. 11941–11945. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 37 (Septembre 2012) . - pp. 11941–11945 Mots-clés : Lubricant  additives Résumé : The synthesis of lubricant additives based on boron and epoxidized soybean oil are presented. These additives are made from a simple patent pending method involving a ring-opening reaction of the epoxidized oil. A couple of these borates were tested in soybean oil, polyalpha olefin basestock, group III basestock, and hexadecane. An aromatic additive was able to increase the oxidation onset of the basestocks by 14, 52, 48, and 49 °C, respectively, when used at 2% wt. The other additive was shown to reduce the wear scar diameter in a friction test when used in soybean oil basestock, from 0.61 mm down to 0.41 mm. These additives were also tested in a gear oil blend, and shown to reduce both wear and oxidation. They were also compatible with a popular additive, additive zinc dialkyl dithiophosphate. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie301519r

Isothermal thermogravimetric analysis of soybean oil oxidation correlated to thin film micro - oxidation test methods / Mert Arca in Industrial & engineering chemistry research, Vol. 51 N° 9 (Mars 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 9 (Mars 2012) . - pp. 3550-3555 Titre : Isothermal thermogravimetric analysis of soybean oil oxidation correlated to thin film micro - oxidation test methods Type de document : texte imprimé Auteurs : Mert Arca, Auteur ; Brajendra K. Sharma, Auteur ; Joseph M. Perez, Auteur Année de publication : 2012 Article en page(s) : pp. 3550-3555 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Test  method  Thin  film  Oxidation  Thermogravimetry Résumé : An isothermal thermogravimetric analysis (TGA) method was used to generate a model capable of predicting the results of the Thin Film Micro-Oxidation (TFMO) test in a soybean oil system. Utilizing a series of pseudorate constants and "activation energies", weight loss data from the TGA method can predict oxidation, polymerization, evaporation, and the formation of high molecular weight deposits, normally observed in the TFMO test. These parameters can be used in simple computer simulations which can calculate the weight of each component of a lubricant as it decomposes. This allows evaluation of lubricants without the difficult to obtain TFMO equipment, instead utilizing equipment available in most laboratories. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25595779 [article] Isothermal thermogravimetric analysis of soybean oil oxidation correlated to thin film micro - oxidation test methods [texte imprimé] / Mert Arca, Auteur ; Brajendra K. Sharma, Auteur ; Joseph M. Perez, Auteur . - 2012 . - pp. 3550-3555. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 9 (Mars 2012) . - pp. 3550-3555 Mots-clés : Test  method  Thin  film  Oxidation  Thermogravimetry Résumé : An isothermal thermogravimetric analysis (TGA) method was used to generate a model capable of predicting the results of the Thin Film Micro-Oxidation (TFMO) test in a soybean oil system. Utilizing a series of pseudorate constants and "activation energies", weight loss data from the TGA method can predict oxidation, polymerization, evaporation, and the formation of high molecular weight deposits, normally observed in the TFMO test. These parameters can be used in simple computer simulations which can calculate the weight of each component of a lubricant as it decomposes. This allows evaluation of lubricants without the difficult to obtain TFMO equipment, instead utilizing equipment available in most laboratories. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25595779