A study on fullerene–acrylamide copolymer nanoball—a new type of water-based lubrication additive

Wear ◽  
2005 ◽  
Vol 258 (11-12) ◽  
pp. 1625-1629 ◽  
Author(s):  
Guichang Jiang ◽  
Wenchao Guan ◽  
Qixin Zheng
Keyword(s):  
Water Based ◽  
New Type ◽  
Lubrication Additive

Colloidal Polystyrene-Carbon Nanotubes as Water-Based Lubricant Additive

2011 ◽  
Vol 228-229 ◽  
pp. 253-258
Author(s):  
Xue Feng Li ◽  
Han Yan ◽  
Shao Xian Peng
Keyword(s):  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Lubricant Additive ◽  
Test Results ◽  
Transmission Electron ◽  
Load Carrying ◽  
Water Based ◽  
New Type ◽  
Lubrication Additive ◽  
Ball Test

A new type of water-based lubrication additive — colloidal polystyrene-carbon nanotubes (PSt-CNTs) has been prepared. Transmission electron microscope shows that the PSt-CNT colloids are tubes with tiny balls in nanometer scale. Four-ball test results indicate that both the load-carrying capacity and anti-wear of the colloidal PSt-CNTs are much superior to those colloidal PSt owing to the additive reinforced by CNTs. The optimum colloidal PSt-CNT content is 1.0 wt.%. The worn surfaces were analyzed using scanning electron microscope. Finally its lubrication mechanism was speculated preliminarily.

scholarly journals Computational Modeling of Hybrid Sisko Nanofluid Flow over a Porous Radially Heated Shrinking/Stretching Disc

Coatings ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1242
Author(s):  
Umair Khan ◽  
Aurang Zaib ◽  
Anuar Ishak ◽  
Fahad S. Al-Mubaddel ◽  
Sakhinah Abu Bakar ◽  
...  
Keyword(s):  
Differential Equations ◽  
Flow Problem ◽  
Shear Thickening ◽  
Hybrid Nanofluid ◽  
Nanofluid Flow ◽  
Shear Thinning Fluids ◽  
Water Based ◽  
New Type ◽  
The Impact ◽  
The Magnetic Field

The present study reveals the behavior of shear-thickening and shear-thinning fluids in magnetohydrodynamic flow comprising the significant impact of a hybrid nanofluid over a porous radially shrinking/stretching disc. The features of physical properties of water-based Ag/TiO2 hybrid nanofluid are examined. The leading flow problem is formulated initially in the requisite form of PDEs (partial differential equations) and then altered into a system of dimensionless ODEs (ordinary differential equations) by employing suitable variables. The renovated dimensionless ODEs are numerically resolved using the package of boundary value problem of fourth-order (bvp4c) available in the MATLAB software. The non-uniqueness of the results for the various pertaining parameters is discussed. There is a significant enhancement in the rate of heat transfer, approximately 13.2%, when the impact of suction governs about 10% in the boundary layer. Therefore, the heat transport rate and the thermal conductivity are greater for the new type of hybrid nanofluid compared with ordinary fluid. The bifurcation of the solutions takes place in the problem only for the shrinking case. Moreover, the sketches show that the nanoparticle volume fractions and the magnetic field delay the separation of the boundarylayer.

Research and Development of a New Type of Water-Based Drilling Fluid

2012 ◽  
Vol 486 ◽  
pp. 464-471
Author(s):  
Kai He Lv ◽  
Tao Shi ◽  
Xue Dong Wu
Keyword(s):  
Drilling Fluid ◽  
Solid Content ◽  
Functional Treatment ◽  
Soluble Salts ◽  
Fluid System ◽  
Water Based ◽  
Treatment Agent ◽  
New Type ◽  
Repeated Use ◽  
Filtration Properties

To solve the problems of conventional water-based drilling fluid, a new type of water-based drilling fluid system that comprises of water, multi-functional treatment agent and soluble salts is developed. Multi-functional treatment agent provides the necessary properties and soluble salt maintains the required density. The composition of the drilling fluid is simple and it is easy to maintain. This new drilling fluid has the advantages of good rheology and filtration properties, strong plugging and inhibiting abilities, low solid content, pollution-free, wide adaptability, easy preparation and repeated use. It is a new type of drilling fluid system.

scholarly journals The Experimental Study on a New Type Low Temperature Water- based Composite Alcohol Drilling Fluid

2014 ◽  
Vol 73 ◽  
pp. 276-282 ◽  
Author(s):  
N.I. Nikolaev ◽  
Liu Tianle ◽  
Wang Zhen ◽  
Jiang Guosheng ◽  
Sun Jiaxin ◽  
...  
Keyword(s):  
Experimental Study ◽  
Low Temperature ◽  
Drilling Fluid ◽  
Water Based ◽  
New Type ◽  
Temperature Water

scholarly journals Assessment of Tribological Properties of Ti3C2 as a Water-Based Lubricant Additive

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5545
Author(s):  
Huong Thi Nguyen ◽  
Koo-Hyun Chung
Keyword(s):  
Stainless Steel ◽  
Tribological Properties ◽  
Direct Contact ◽  
Friction And Wear ◽  
Lubricant Additive ◽  
Practical Applications ◽  
Normal Forces ◽  
Low Viscosity ◽  
Water Based ◽  
Lubrication Additive

Water-based lubrication has attracted remarkable interest due to its environmental and economic advantages. However, practical applications of water-based lubrication are often limited, mainly because of low viscosity and corrosivity. The use of additives has been proposed to overcome these limitations. In this work, the tribological characteristics of titanium carbide (Ti3C2) MXenes, as additives for water-based lubrication, were systematically investigated for contact sliding between stainless steel under various normal forces and Ti3C2 concentrations. Both friction and wear were found to decrease with increasing Ti3C2 concentration up to 5 wt%, and then increased when the concentration was larger than 5 wt%. The results suggest that Ti3C2 flakes hindered direct contact, particularly at the edges of the contact interfaces. It was further shown that the agglomeration of Ti3C2 flakes may have reduced the hindering when an excessive amount of Ti3C2 (e.g., 7 wt%) was applied. The decreases in the friction coefficient and wear rate with 5 wt% of Ti3C2 concentration w approximately 20% and 48%, respectively. The outcomes of this work may be helpful in gaining a better understanding of the tribological properties of Ti3C2 as a feasible water-based lubrication additive.

Experimental Investigation of the Water-Based Fog Screen System in Photoelectric Interference

2013 ◽  
Vol 385-386 ◽  
pp. 1921-1926
Author(s):  
Yue Jun He ◽  
Bao Lin Ren ◽  
He Gang Xu ◽  
Wang Hua ◽  
Chun Heng Li
Keyword(s):  
Experimental Investigation ◽  
Visible Light ◽  
Energy Saving ◽  
Electromagnetic Waves ◽  
Low Cost ◽  
Environmental Features ◽  
Military Applications ◽  
Water Based ◽  
New Type ◽  
Screen System

The water-based fog screen system for photoelectric interference, with low cost, energy-saving and environmental features, is a new type of interference material. This article describes and investigates the physical characteristics of the water-based fog screen, the principle behind the interference of visible light, infrared and other electromagnetic waves using mist, the composition of the water-based fog screen system and its significance in military applications.

Study on the Gloss of Polyurethane Water-Based Ink

2010 ◽  
Vol 428-429 ◽  
pp. 431-435 ◽  
Author(s):  
Chang Qing Fang ◽  
Shi Sheng Zhou ◽  
M.R. Zhang ◽  
P.G. Ren
Keyword(s):  
Surface Tension ◽  
Rapid Development ◽  
Packaging Material ◽  
Domestic Water ◽  
Widespread Application ◽  
Polyurethane Resin ◽  
Water Based ◽  
Green Packaging ◽  
New Type ◽  
Hydrotropic Agent

With the advantages of no pollution and no poison, the water-based ink, as a new type of green packaging material, is especially applicable to the food, medicine and drink packaging. However, the traditional domestic water-based ink, featuring some disadvantages in the properties of stability, gloss and so on, increasingly evolves into an enormous obstacle to the widespread application of the packaging and the rapid development of the whole industry. In this paper, the polyurethane resin is adopted to replace the ordinary binder resin in the experiment of the water-based ink, and the gloss of the polyurethane water-based ink is also studied. It is shown that the gloss of water-based ink is influenced by the dispersion of pigment, water content and surface tension of water-based ink system, hydrotropic agent and some other factors.

Preparation and Properties of Water-Based Solar-Reflective Coatings with Color Hollow Ceramic Microsphere

2011 ◽  
Vol 687 ◽  
pp. 734-738 ◽  
Author(s):  
Pei Wang ◽  
Xia Zhen Zhang ◽  
Zhi Yong Wei ◽  
Wen Yan Lv ◽  
Lian Liu ◽  
...  
Keyword(s):  
Base Layer ◽  
Butyl Methacrylate ◽  
Emulsion Copolymerization ◽  
Water Based ◽  
New Type ◽  
Polymerization Condition ◽  
Coated Surface ◽  
Reflective Coatings ◽  
Micro Sphere ◽  
Insulating Properties

We have developed a system of solar reflective coatings that can reflect the sunlight then reduce the temperature of coated surface. The base layer material, fluorinated polystyrene-acrylate copolymers water-based emulsion was firstly prepared with hexafluoro butyl methacrylate(HFBA), styrene(St), butyl acrylate(BA), methyl methacrylate (MMA) by pre-emulsion copolymerization method. The effect on copolymerization and emulsion properties were investigated, and the polymerization condition was optimized. A hollow ceramic micro-sphere was used as the main reflective functional fillers in the system. We had a test on the practical heat-insulating properties on a prototype device. The result showed that temperature difference of the surface was reached as 6.5 °C. The new type of reflective coatings also has good stability and durability.

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