Study of Tribological Synergistic Effect of N-Containing Heterocyclic Borate Ester with Tricresyl Phosphate as Rapeseed Oil Additive

2020 ◽  
Vol 57 (2) ◽  
pp. 175-184
Author(s):  
Liping Xiong ◽  
Zhongyi He ◽  
Feng Xie ◽  
Jianqiang Hu ◽  
Jian Liu ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Rapeseed Oil ◽  
Tricresyl Phosphate ◽  
Borate Ester

scholarly journals Synergistic effect of nanodiamonds on the adsorption of tricresyl phosphate on iron oxide surfaces

2019 ◽  
Vol 114 (17) ◽  
pp. 171602 ◽  
Author(s):  
Arash Khajeh ◽  
Jacqueline Krim ◽  
Ashlie Martini
Keyword(s):  
Iron Oxide ◽  
Synergistic Effect ◽  
Oxide Surfaces ◽  
Tricresyl Phosphate

scholarly journals Tribological and antioxidation properties study of two N-containing borate ester derivatives as additive in rapeseed oil

PLoS ONE ◽  
2018 ◽  
Vol 13 (12) ◽  
pp. e0207267 ◽  
Author(s):  
Zhongyi He ◽  
Liping Xiong ◽  
Feng Xie ◽  
Mingxue Shen ◽  
Sheng Han ◽  
...  
Keyword(s):  
Rapeseed Oil ◽  
Borate Ester

Synergistic effect between organic borate esters and phosphorus-based additives on tribological performances as lubricant additives in mineral oil

2017 ◽  
Vol 231 (8) ◽  
pp. 1030-1040 ◽  
Author(s):  
Xisheng Fu ◽  
Jianchang Li ◽  
Lingguo Sun ◽  
Xuguang Zhou ◽  
Bingji Fan ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Chain Length ◽  
Mineral Oil ◽  
Lubricant Additives ◽  
Edge Structure ◽  
Near Surface ◽  
Borate Ester ◽  
Borate Esters ◽  
Worn Surface ◽  
X Ray Absorption

Nowadays, looking for environment-friendly lubricant additives to replace phosphorus-based derivatives in automotive lubricating system is one of the main objectives. Organic borate ester is one kind of potential substitutes for phosphorus-based derivatives. In this paper, the interactions of organic borate esters and dioctylphosphite ester on tribological performances were studied. Results showed that they had a synergistic effect on antiwear performance and friction-reducing property as lubricant additives in mineral oil. The chemical nature of worn surface was explored by X-ray absorption near-edge structure spectroscopy. Borate ester could facilitate the decomposition of phosphorus-based additive and the formation of phosphate. What is more, boron-containing species could react with phosphate to form boron–phosphorus-based thin film on the surface. Boron mainly forms B2O3 on the surface. In the near surface of tribofilm, nitrogen-containing borate ester reduced the polyphosphate chain length due to the formation of ammonium cation. The polyphosphate chain length of the tribofilm generated from dioctylphosphite ester mixed with nitrogen-containing alkyl borate ester is shorter compared to that of the tribofilm generated from dioctylphosphite ester mixed with nitrogen-containing heterocyclic borate ester.

Rapeseed Oil and Sunflower Oil Diets Enhance Platelet In Vitro Aggregation and Thromboxane Production in Healthy Men when Compared with Milk Fat or Habitual Diets

1992 ◽  
Vol 67 (03) ◽  
pp. 352-356 ◽  
Author(s):  
Marja Mutanen ◽  
Riitta Freese ◽  
Liisa M Valsta ◽  
Irma Ahola ◽  
Antti Ahlström
Keyword(s):  
Sunflower Oil ◽  
Milk Fat ◽  
Rapeseed Oil ◽  
Controlled Trial ◽  
Collagen Concentration ◽  
Aggregation Pattern ◽  
Thromboxane Production ◽  
Low Erucic Acid ◽  
Platelet Thromboxane

SummaryIn this highly controlled trial, 26 normolipidemic men (average age 28 years, range 18 to 60) were fed a baseline diet high in milk fat (MF) (fat 36% of energy, saturates 19%, monounsaturates 11%, polyunsaturates 4%), followed by a diet high in sunflower oil (SO) (fat 38% of energy, saturates 13%, monounsaturates 10%, polyunsaturates 13%) and another diet high in low erucic-acid rapeseed oil (RO) (fat 38% of energy, saturates 12%, monounsaturates 16%, polyunsaturates 8%). All diets were mixed natural diets with the same cholesterol contents. The baseline milk fat diet was given for 14 days and the oil diets for 24 days in a blind cross-over design. The platelet in vitro aggregation (slope %/min) induced by 1, 2 and 3 pM ADP and collagen (25 pg/ml PRP) was highly significantly (p <0.001) increased after both oil diets when compared with the results from the milk fat diet. The aggregation pattern determined by threshold collagen concentration confirmed increased collagen sensitivity of the platelets after the rapeseed oil diet (p <0.001). The enhancement of platelet aggregation was associated with increased in vitro platelet thromboxane production after the oil diets vs. the milk fat diet (p <0.05 after the sunflower oil diet and p <0.001 after the rapeseed oil diet).

Characteristics Of The Structure Formation Of Gypsum Binder Modified With Zinc Hydrosilicates

2020 ◽  
pp. 40-46
Keyword(s):  
Synergistic Effect ◽  
Physicochemical Properties ◽  
Structure Formation ◽  
Silicic Acid ◽  
Chemical Properties ◽  
Crystal Formation ◽  
Ability To Act ◽  
Chemical Factors ◽  
Sorption Characteristics

The authors' methodic for assessing the role of chemical and physic-chemical factors during the structure formation of gypsum stone is presented in the article. The methodic is also makes it possible to reveal the synergistic effect and to determine the ranges of variation of controls factors that ensure maximum values of such effect. The effect of a micro-sized modifier based on zinc hydro-silicates on the structure formation of building gypsum is analyzed and corresponding dependencies are found. It is shown that effects of influence of modifier on the properties of gypsum compositions are determined by chemical properties of modifier. Among the mentioned properties are sorption characteristics (which depend on the amount of silicic acid and its state) and physicochemical properties - the ability to act as a substrate during crystal formation. The proposed method can also be extended to other binding substances and materials. This article contributes to the understanding of the processes that occur during the structure formation of composites, which will make it possible to control the structure formation in the future, obtaining materials with a given set of properties.

Polyurethanes based on hydroxylated rapeseed oil: thermal and dynamic mechanical properties

2015 ◽  
Vol 37 (2) ◽  
pp. 162-167
Author(s):  
V.A. Vilensky ◽  
◽  
L.V. Kobrina ◽  
S.V. Riabov ◽  
Y.Y. Kercha ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Rapeseed Oil ◽  
Dynamic Mechanical Properties ◽  
Dynamic Mechanical

The Synergistic Effect of Suplatast Tosilate and Tacrolimus Hydrate Ointment on Adult Atopic Dermatitis with Intractable Face Erythema

2005 ◽  
Vol 67 (3) ◽  
pp. 247-251 ◽  
Author(s):  
Motoi TAKENAKA ◽  
Sang Jae BAE ◽  
Shinichi SATO ◽  
Ichiro KATAYAMA
Keyword(s):  
Atopic Dermatitis ◽  
Synergistic Effect
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