Investigation of effect of type of pigment/extender on the stability of high pigment volume concentration water-based architectural paint

For Russia, due to its long winter period, improvement of thermal insulation properties of envelope structures by applying thermal insulation paint and varnish coating to its inner surface is considered perspective. Thermal insulation properties of such coatings are provided by adding aluminosilicate microspheres and aluminum pigment to their composition. This study was focused on defining the effect of hollow aluminosilicate microspheres and aluminum pigment on the paint thermal insulation coating based on water-based polymer dispersion and on its optimum filling ratio. The optimum filling ratio was determined using the method of critical pigment volume concentration (CPVC). The optimum filling ratio was found equal to 55%.

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Effect of particle concentration on the stability of water-based SiO2 nanofluid

Powder Technology ◽

10.1016/j.powtec.2020.10.073 ◽

2021 ◽

Vol 379 ◽

pp. 457-465

Author(s):

Tiancheng Zhang ◽

Quanle Zou ◽

Zhiheng Cheng ◽

Zihan Chen ◽

Ying Liu ◽

...

Keyword(s):

Particle Concentration ◽

Water Based ◽

The Stability ◽

Stability Of Water

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Experimental Investigation on Stability, Viscosity, and Electrical Conductivity of Water-Based Hybrid Nanofluid of MWCNT-Fe2O3

Nanomaterials ◽

10.3390/nano11010136 ◽

2021 ◽

Vol 11 (1) ◽

pp. 136

Author(s):

Solomon O. Giwa ◽

Mohsen Sharifpur ◽

Mohammad H. Ahmadi ◽

S. M. Sohel Murshed ◽

Josua P. Meyer

Keyword(s):

Electrical Conductivity ◽

Visual Inspection ◽

Volume Concentration ◽

Working Fluid ◽

Hybrid Nanofluid ◽

Multiwalled Carbon ◽

Transmission Electron ◽

Hybrid Nanofluids ◽

Uv Visible ◽

The Stability

The superiority of nanofluid over conventional working fluid has been well researched and proven. Newest on the horizon is the hybrid nanofluid currently being examined due to its improved thermal properties. This paper examined the viscosity and electrical conductivity of deionized water (DIW)-based multiwalled carbon nanotube (MWCNT)-Fe2O3 (20:80) nanofluids at temperatures and volume concentrations ranging from 15 °C to 55 °C and 0.1–1.5%, respectively. The morphology of the suspended hybrid nanofluids was characterized using a transmission electron microscope, and the stability was monitored using visual inspection, UV–visible, and viscosity-checking techniques. With the aid of a viscometer and electrical conductivity meter, the viscosity and electrical conductivity of the hybrid nanofluids were determined, respectively. The MWCNT-Fe2O3/DIW nanofluids were found to be stable and well suspended. Both the electrical conductivity and viscosity of the hybrid nanofluids were augmented with respect to increasing volume concentration. In contrast, the temperature rise was noticed to diminish the viscosity of the nanofluids, but it enhanced electrical conductivity. Maximum increments of 35.7% and 1676.4% were obtained for the viscosity and electrical conductivity of the hybrid nanofluids, respectively, when compared with the base fluid. The obtained results were observed to agree with previous studies in the literature. After fitting the obtained experimental data, high accuracy was achieved with the formulated correlations for estimating the electrical conductivity and viscosity. The examined hybrid nanofluid was noticed to possess a lesser viscosity in comparison with the mono-particle nanofluid of Fe2O3/water, which was good for engineering applications as the pumping power would be reduced.

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The Effect of Pigment Volume Concentration on the Magnetic and Mechanical Performance of Particulate Disk Coatings

Polymers in Information Storage Technology ◽

10.1007/978-1-4613-0843-0_23 ◽

1989 ◽

pp. 311-315

Author(s):

H. L. Dickstein ◽

R. P. Giordano ◽

W. H. Dickstein

Keyword(s):

Volume Concentration ◽

Mechanical Performance ◽

Pigment Volume Concentration

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A new three-phase heterocrystal catalysts and their superior treatment efficiency for tetracycline

Functional Materials Letters ◽

10.1142/s1793604717500151 ◽

2016 ◽

Vol 10 (03) ◽

pp. 1750015

Author(s):

Feng-Rui Wang ◽

Hui-Ping Sun ◽

Yan Wang ◽

Jin-Ku Liu ◽

Yi Fang ◽

...

Keyword(s):

Catalytic Activity ◽

Band Structure ◽

Antibiotic Residues ◽

Treatment Efficiency ◽

Electron Hole ◽

Three Phase ◽

Catalytic Material ◽

Water Based ◽

The Stability ◽

Functional Components

An easy recyclable and interesting Ag3PO4@Pt@TiO2 (APTP) three-phase heterocrystal chains were self-assembled by the cohesive action and chemical construction of polyvinylpyrrolidone (PVP). We found that a new electron–hole transmission path has been built via the rematch of the band structure of Ag3PO4, Pt and TiO2 which extends the light absorption and promoted the electron–hole separation to treat the antibiotic residues in the water. Based on the thorough investigations, a new catalytic material was provided for antibiotics degradation. The catalytic activity of APTP toward the degradation of tetracycline solution was enhanced by 166.67% and the stability increased remarkably compared with pure Ag3PO4 through the integration of different functional components.

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Water Based Colloidal Processing of Ceramic Laminates

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.333.39 ◽

2007 ◽

Vol 333 ◽

pp. 39-48 ◽

Cited By ~ 6

Author(s):

Antonio Javier Sanchez-Herencia

Keyword(s):

Processing Parameters ◽

Colloidal Processing ◽

Water Separation ◽

Green Strength ◽

Water Based ◽

The Stability ◽

Deflection Criteria ◽

Joining Strength ◽

Processing Techniques ◽

Laminated Structures

Multilayered materials and coating are complex structures proposed among others to face the structural requirements of ceramics. The development of reinforcement mechanism by laminated structures can be due to deflection criteria or to the presence of residual stresses and requires of tailored laminates. These designs are characterized by the phases, thickness and distribution of the layers as well as the joining strength between them. In this sense water based colloidal processing techniques are used to fabricate layered structures by consolidating the layers from fluid dispersions of the powders in water. In these processing methods the phases presented in the final laminate are mainly given by the composition of the starting slurries while the changes in thickness and sharpness of the layers are controlled by acting on the processing parameters. The achievement of stable slurries is a shared step for all the colloidal processing techniques. In the water based slurries the stability will be dominated by the polar media, the surface behavior of the particles and the presence of dispersant additives to increase the repulsion between particles. The stable slurry ensures an effective milling and dispersion of the phases as well as high solid loadings, if required. Further processes associated to shaping and consolidation of the layers requires the incorporation of additives and-or water removal. The shaping methods based on aqueous slurries can be classified taking into account the process of solid-water separation. For each of those shaping methods, the nature and amount of the additives is different in order to get the optimum rheological behavior and green strength after drying. Depending on the thickness of layers and coatings as well as the shape and dimensions of the samples, the shaping method can be selected alone and combined with others.

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