Bentonite Dispersion
Experimental investigation on laponite as ultra-high …
In practice, the reduced rate of apparent viscosity value of bentonite dispersion formulated with 1 wt% laponite is 0% after aging at 260 °C for 16 h, while that of bentonite dispersion with 1 wt% HE300 is 94.7%. Research results indicate that laponite is compatible well with other commonly used additives and has promising application as …
Preparation and characterization analysis of modified bentonite …
The existing explosion suppression powder modification theory cannot provide direct guidance for the dispersion modification of bentonite. Therefore, it is necessary to conduct experimental research and characterization on the modification effect of bentonite dispersion based on a comprehensive review of previous studies [32].
Yield stress of water–bentonite dispersions
Yield stress of aqueous bentonite dispersions was determined at two concentrations, with two bentonites, over a range of pH values, with the vane technique and by extrapolation of the full rheograms, derived with concentric cylinder viscometer, fitted to Herschel–Bulkley and to Casson models. ... using a 6.42% Zenith bentonite dispersion ...
High Speed Dispersion of Bentonite
High Speed Dispersion of Bentonite. Bentonite is a naturally occuring aluminium silicate clay which can take up several times its own weight of water to form a highly thixotropic colloidal suspension or gel. The gel …
THE ADDITION OF GELATIN PROTEIN TO BENTONITE DISPERSION …
PDF | On Jan 1, 2023, A.V. Sumina and others published THE ADDITION OF GELATIN PROTEIN TO BENTONITE DISPERSION AS A WAY TO REGULATE THE TECHNOLOGICAL CHARACTERISTICS OF NATURAL ALUMINOSILICATE RAW ...
Experimental and analytical methods for testing inhibitors …
Aqueous bentonite dispersion with concentrations of around 1 to 3 wt% is arranged and kept for one day at room temperature and atmospheric pressure. The dispersion was split into two parts, one being a blank control. The other part was treated with 2 wt% of inhibitor. Then, both parts were centrifuged in half an hour.
Bentonite as a water-insoluble amorphous solid dispersion …
Bentonite as an amorphous solid dispersion matrix for poorly water-soluble drugs. In contrast to the low oral bioavailability observed in our previous drug-BT composites [[20], [21], [22]], it was notable that the SF-BT composite significantly enhanced the oral BA of SF by generating supersaturation. Thus, we conducted pharmacokinetic …
Bentonite dispersions: Transition from liquid-like to solid …
A bentonite dispersion will possess a more developed structure with an increase in concentration and resting time since the stress level which causes discontinuity of the displacement is an indicator of the structure strength (Fig. 14 (a) and (d)). Indeed, the load needed to cause discontinuity of the displacement increases with bentonite ...
The Modification of Rheological Properties of Bentonite …
Bentonite suspensions with 8.0 wt% solid concentration were prepared in this study for rheological measurements. bentonite slowly to deionized water under magnetic stirring conditions, to avoid the formation of aggregates and ensure homogeneous dispersion. In the case of bentonite-surfactant dispersions, the surfactant solutions ( 1.0×10. −3. M,
Research of Na CO / C H SO Na modified bentonite on …
to further investigate the dispersion performance of modified bentonite at high temperature and high pressure by testing the gelling value (this property is an important indicator of ...
Effect of thermal aging and electrolyte on bentonite …
The bentonite dispersion was thermally aged at 120 °C in the rolling oven for 24 h prior to rheological measurements. The electrolyte treated bentonite dispersion was formulated by mixing 0.1 M NaCl in bentonite dispersion with constant stirring for 24 h. It was noticed that electrolyte treated bentonite dispersions have low rheological ...
Influence of carbon ash on the rheological properties of bentonite …
1. Introduction. Sodium or calcium montmorillonite, a major component of bentonite, is a dioctahedral smectite (called swelling clay mineral group) and has excellent absorption and ion exchange properties (Bergaya et al., 2006).Due to its unique colloidal and rheological properties, sodium bentonite dispersion is also the most commonly …
Effect of ion type and concentration on rheological …
Rheology of sodium bentonite dispersion in NaCl, CaCl 2 and MgSO 4 solutions was analyzed. • Rheology model's were calibrated to the experimental results. • Influence of ionic strength on shear stress and model's parameters was quantified. • Rheology behavior was explained in terms of particle to particle interactions. •
A new environmentally friendly water-based drilling fluids …
Firstly, bentonite dispersion with a fixed dosage of 2 w/v% was prepared. Secondly, while continuing to stir at 8000 r/min, a certain quality of additives was cooperated slowly with 300 mL bentonite dispersion according to the formula (the mass/volume concentration). After each additive was added, the stirring process was …
Bentonite
The swelling property of bentonite is used to produce viscous water suspensions for bonding, plasticizing, and suspending applications. The presence of a large surface area of bentonite is due to the colloidal dispersion of the particles is the main reason for its application as an insecticide carrier, an emulsifier, and an emulsion stabilizer.
The Modification of Rheological Properties of Bentonite …
The pure bentonite dispersions were prepared by adding bentonite slowly to deionized water under magnetic stirring conditions, to avoid the formation of aggregates and ensure homogeneous dispersion. In the case of bentonite-surfactant dispersions, the surfactant solutions ( 1.0 × 10−3 M, International Journal of Chemical Engineering and ...
Effect of cationic surfactant adsorption on the rheological …
Dispersion into the colloidal state requires the transformation of the original bentonite into the sodium form. Activated bentonite was obtained from natural bentonite (35% humidity) by treating the clay with 4% w/v NaHCO 3 solution. Natural bentonite is labeled CaLB and sodium-activated clay is NaLB. Chemical analysis of the clays is …
Research of Na2CO3/C12H25SO4Na modified bentonite on high dispersion
PDF | On May 23, 2022, Yunjie Shu and others published Research of Na2CO3/C12H25SO4Na modified bentonite on high dispersion performance | Find, read and cite all the research you need on ResearchGate
Investigating the performance of Ogata-banks' one …
Next, the results of one-dimensional dispersion in Bentonite with and without surface absorption in time intervals of 15, 30, and 90 days from the beginning of dispersion have been compared using the C-Tran Software. The results of this research study have revealed that the oil contamination density (concentration) variations along the soil ...
Temperature-Sensitive Modified Bentonite Based on NIPAM …
Bentonite is an important component of drilling fluid, whose quality directly affects the safety and economic benefits of water-based drilling fluid. In order to effectively cope with temperature changes, the development of temperature-sensitive modified bentonite is of great significance. In this study, a temperature-sensitive modified …
Solutions for Your TOUGHEST MIXING CHEMICALS
for bentonite is in drilling muds, however it is widely used as a suspending and stabilizing agent and as an adsorbent or clarifying agent, in many industries, some examples of …
The Rheological and Colloidal Properties of Bentonite …
The influence of surfactants on the flow behavior of sodium montmorillonite dispersions (2% w/w) was studied for a cationic (cetylpyridinium chloride, CPCl) and an …
Influence of the temperature on the rheological properties of bentonite
An analysis was also performed on a sample of bentonite dispersion in the CMC solution after drying and wash. The spectrum was exactly the same as for the bentonite. So, as expected, there was no exfoliation or intercalation of the macromolecular chains between the platelets, the inter lamellar distance remaining the same with and …
Laponite®—From Dispersion to Gel—Structure, Properties, …
Generally, the dispersion of clay particles in water involves the establishment of interactions between the charged surface of the nanoparticles and the surrounding solvent molecules. ... In a 4% bentonite dispersion mixed with 1% LAP, the viscosity remains consistent before and after aging at 260 °C for 16 h, exhibiting its …
Principles of flow of kaolin and bentonite dispersions
That is, a calcium bentonite dispersed in a sodium salt solution exhibits rheological properties different from a dispersion of the bentonite in its sodium form in a calcium salt solution, even if the Na/ Ca ratio is the same (Brandenburg and Lagaly, in preparation). Soda activation The well-known increase of viscosity and consistency of ...
The colloidal and rheological properties of bentonite suspensions
Clay minerals are extensively used in a wide range of applications. They are a key component in the formulation of ceramic products, cement, drilling fluids, moulding sands, paints and paper, among others [1].An important characteristic that clay minerals are able to provide in such applications is adequate particle dispersion, which is necessary …
Colloid chemistry of clay minerals: the coagulation of …
Dispersion into the colloidal state requires the transformation of the original bentonite into the sodium form, for instance by soda activation. Therefore, we review here the coagulation of sodium montmorillonite dispersions by inorganic and organic cations and the influence of compounds of practical interest such as phosphates, cationic and ...
TAFIGEL PUR 60
TAFIGEL PUR 60 can be added undiluted to the grind and before adding the binder. For post addition, the preparation of a masterbatch is recommended with a suitable water/co-solvent mixture (e.g. /butyl-triglycol, di-propylenglycol-mono-methylether or propyleneglycol-n-butyl-ether/water).
Investigation and analysis of the macro- and micro …
Moreover, owing to its unique properties, bentonite-water dispersion is widely used in a wide variety of industries, like oil or gas industries, cosmetics, pharmaceuticals, pelletizing iron ores, paint, and so on 35. As the drilling mud usually works in reservoirs and deep wells, the elevated temperature could affect bentonite dispersion ...
Dispersion characteristics of clayey soils containing waste …
As in ball clay samples, pure Na-activated bentonite samples showed 59% dispersion in double hydrometer tests, but similar dispersibility behavior was not observed in crumb tests. Bentonite samples with the addition of 5% and 10% WRP passed from ND3 to ND2 class for pinhole tests and from K2 to K1 class for crumb tests.
Influence of combined natural deep eutectic solvent and …
Bentonite is also currently utilized in synthesizing innovative nanomaterials and fine chemicals [17]. The absorption and ion exchange properties of bentonite clays are also exploited in applications of landfill engineering [18], containment of highly radioactive wastes [19], and environmental remediation applications such as soil treatment [20 ...
Abrasivity by bentonite dispersions
The abrasivity by bentonite dispersions was determined by the mass loss (mg) of a bronze wire before and after rotation in the bentonite dispersion using an Einlehner AT 1000 apparatus (Fig. 2).First, the initial weight of the clean and dry wire was determined before the measurement.
Natural amino acids as potential swelling and dispersion inhibitors …
On the other hand, almost all the amino acids displayed only swelling except Arginine that showed marginal dispersion of the expanded bentonite wafer (See Fig. 10 b). This is probably due to the longer chain lengths possessed by Arginine that results in reducing its hydrogen bond energy that limits water invasion or adsorption by the highly ...
Bentonite dispersions: Transition from liquid-like to solid-like
A bentonite dispersion will possess a more developed structure with an increase in concentration and resting time since the stress level which causes …
(PDF) Rheology of Bentonite Dispersions: Role of …
Bentonite Dispersions. FIG. 3. Change of the yield stress as a function of the ionic strength at the solid content of 15 wt%. and as a function of solid content of bentonite at natural ionic ...