Polymer Sciences Open Access

Bismuth additives for silicon oils as a green alternative

4^th Edition of International Conference on Polymer Science and Technology

June 04-05, 2018 London, UK

Andr�?©s Ciolino,Camila Muller, Mariana Dennehy, and Walter Tuckart

DIQ-UNS, Argentina INQUISUR CONICET - UNS, Argentina IFISUR, Argentina

Scientific Tracks Abstracts: Polym Sci

Abstract:

Fluids formulations with good properties were developed by using an environmentally friendly additive. The performance of these formulations was studied at high and low contact pressure conditions on steel/steel and polymer/steel systems. Bismuth (III) sulfide powder (Bi2S3) was obtained by employing solvothermal synthesis procedures. An orthorrombic crystal lattice (DRX) and a high-purity product (FRX) was evidenced for the powder obtained, which was added to a vinyl-terminated silicone fluid to obtain different wt% mixtures. The tribological performance of the formulations prepared was studied from Reichert´s (steel/steel system) and block on ring (polymer/ steel tests), according to standardized methodologies. The results obtained for these formulations were compared with those formulations prepared with commercial Bi2S3, commercial molybdenum (IV) sulfide (MoS2) and graphite. Lubricity properties increased when wt% of solvothermal Bi2S3 increased. The wear area decreased up to 90% according to Reichert´s tests. In addition, it was observed that solvothermal Bi2S3 shows a better tribological behavior when compared to commercial Bi2S3, MoS2, and graphite. These results show the possibility to replace lead (Pb) or molybdenum (Mo) derivatives in lubricants´ formulations by an environmentally friendly additive, suitable for extreme pressure (EP) formulations. Moreover, solvothermal Bi2S3 displayed an excellent performance in silicon oil formulations when compared to commercially used additives that opens a window for its use in lubricant´s formulations at high-temperatures.
Recent Publications 1. Li Y et al.  (2013) Selected-control hydrothermal synthesis and photoresponse properties of Bi2S3 micro/nanocrystals. Cryst. Eng. Comm. 15(33):66116616. 2. Xu X(2016) Extreme pressure synergistic mechanism of bismuth naphthenate and sulfurized isobutene additives. Surface Review and Letters. 24(5):1-12. 3. Heilig M and Egli M (2006) Pharmacological treatment of alcohol dependence: target symptoms and target mechanisms. Pharmacology and therapeutics. 111(3):855-876. 4. Li X et al. (2008) Acute alcohol intoxication potentiates neutrophil-mediated intestinal tissue damage after burn injury. Shock 29(3):377-383. 5. Room R, BaborT and Rehm J (2005) Alcohol and public health. Lancet. 365(9458):519-530.
 

Biography :

Camila Müller is currently a PhD student in the Department of Chemical Engineering, Institute of Chemistry of the South. Dr. Mariana Dennehy is Researcher at the Instituto de Química del Sur (INQUISUR-CONICET UNS)). Dr. Andrés Ciolino is Researcher at the Planta Piloto de Ingeniería Química (PLAPIQUI-CONICET UNS). Dr. Walter Tuckart is a Researcher at the Instituto de Física del Sur (IFISUR-CONICET UNS).

Email:aciolino@plapiqui.edu.ar