Surface-modified biopolymer as an environment-friendly shale inhibitor and swelling control agent

2021 ◽  
pp. 117275
Author(s):  
Tawfik A. Saleh ◽  
Azeem Rana
Keyword(s):  
Control Agent ◽  
Environment Friendly ◽  
Surface Modified

scholarly journals Evaluation of environment friendly micro-ionized litchi leaves powder (LLP) as a fluid loss control agent in water-based drilling fluid

2021 ◽  
Vol 11 (4) ◽  
pp. 1715-1726
Author(s):  
Ved Prakash ◽  
Neetu Sharma ◽  
Munmun Bhattacharya ◽  
Ashok Raina ◽  
Man Mohan Gusain ◽  
...  
Keyword(s):  
Hot Rolling ◽  
Drilling Fluid ◽  
Control Agent ◽  
American Petroleum Institute ◽  
Rheological Parameters ◽  
Fluid Loss ◽  
Environment Friendly ◽  
Filtration Loss ◽  
Water Based ◽  
Loss Control

AbstractThis work investigates the efficacy of a biodegradable natural product, litchi leaves powder (LLP) as a filtration loss control agent in the water-based drilling fluid formulations. In order to evaluate the potential of litchi leaves powder (LLP), a strict protocol of experimentations according to API (American Petroleum Institute) standard has been followed. The experimental outcome showed that before hot rolling and after hot rolling of mud samples at 100 °C it was observed that 3–5% Concentration of LLP significantly increased the rheological parameters such as PV, YP and gelation of drilling fluid as compared to reference mud. Also, LLP reformed the filtration loss control characterization, suggesting a better biodegradable fluid loss reducing agent. After hot rolling at 100 °C for 18 h, the water-based drilling fluid with LLP as an additive showed a marked reduction in filtration control property as compared to reference Mud (RM). Experimental results concluded that 5% concentration of LLP significantly reduced the filtration loss of drilling fluid by 70.6% as compared to reference mud under the influence of 100 psi pressure. However, the conventional fluid loss additive CMC (LVG) reduced the filtration loss by maximum 67.5% as compared to reference mud. Therefore, LLP can be used as an alternative to CMC (LVG) in water-based drilling fluid with a maximum subsurface temperature of 100 °C.

Sustainable composite material based on surface-modified rape straw and environment-friendly adhesive

2021 ◽  
Vol 300 ◽  
pp. 124036
Author(s):  
Jaroslav Dušek ◽  
Miloš Jerman ◽  
Milan Podlena ◽  
Martin Böhm ◽  
Robert Černý
Keyword(s):  
Composite Material ◽  
Environment Friendly ◽  
Rape Straw ◽  
Surface Modified

Surface Modification of Super-Fine Magnesium Hydroxide Powder and it’s Flame-Retardant Treatment of Flexible PVC

2009 ◽  
Vol 610-613 ◽  
pp. 165-170
Author(s):  
Gao Xiang Du ◽  
Hao Ding ◽  
Bai Kun Wang ◽  
Qiang Xue
Keyword(s):  
Surface Modification ◽  
Flame Retardant ◽  
Magnesium Hydroxide ◽  
Fire Retardant ◽  
Volume Resistivity ◽  
Mass Composition ◽  
Environment Friendly ◽  
Stable Chemical ◽  
Surface Modified ◽  
Halogen Free

Surface modification is very important to industrial application of the magnesium hydroxide (MDH) powder, which is used as a kind of environment-friendly flame-retardant. In this paper, a kind of MDH powder surface-modified with silicane coupling agent and stearic acid is synthesized, and its potential usage in the flame-retardant treatment of flexible PVC is studied. The influence of the surface treatment to the dispersion of the powder in PVC, the flame-retardant and other physical properties of the MDH flame-retardant treated flexible PVC are discussed in detail. The surface modification mechanism of MDH is studied by the FTIR analysis, and then the surface modification model is established. Results show that molecules between the surface of the particle and these two modifiers form stable chemical bonds, and this kind of surface modification can improve the MDH’s dispersion and the compatibility of the flexible PVC. When the flame-retardant flexible PVC is produced according to the mass composition of PVC/DOP/MDH=100:50:80 and a few other additives, its oxygen index is 31.5, the elongation at break is 240%, the tensile strength is 13.0MPa, the hypothermia tendering is +30/-0, the volume resistivity at 20°C is 3.2×1011Ω•m. These index are just correspondent with requires of the halogen-free fire-retardant flexible PVC.

Analytical Electron Microscopy of Surface-Modified Ceramics

1985 ◽  
Vol 43 ◽  
pp. 276-279
Author(s):  
P. S. Sklad
Keyword(s):  
Electron Microscopy ◽  
Analytical Electron Microscopy ◽  
Theoretical Models ◽  
Ceramic Materials ◽  
Solute Concentration ◽  
Second Phase ◽  
Analytical Electron ◽  
Implantation Techniques ◽  
Lattice Damage ◽  
Surface Modified

Over the past several years, it has become increasingly evident that materials for proposed advanced energy systems will be required to operate at high temperatures and in aggressive environments. These constraints make structural ceramics attractive materials for these systems. However it is well known that the condition of the specimen surface of ceramic materials is often critical in controlling properties such as fracture toughness, oxidation resistance, and wear resistance. Ion implantation techniques offer the potential of overcoming some of the surface related limitations.While the effects of implantation on surface sensitive properties may be measured indpendently, it is important to understand the microstructural evolution leading to these changes. Analytical electron microscopy provides a useful tool for characterizing the microstructures produced in terms of solute concentration profiles, second phase formation, lattice damage, crystallinity of the implanted layer, and annealing behavior. Such analyses allow correlations to be made with theoretical models, property measurements, and results of complimentary techniques.

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