The Experts below are selected from a list of 192 Experts worldwide ranked by ideXlab platform
Mohsen Gholami - One of the best experts on this subject based on the ideXlab platform.
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Application of Acrylate Latex Emulsion as the Binder for Coating Aluminum Substrate by Silica-Gel Powder
International Journal of Air-Conditioning and Refrigeration, 2019Co-Authors: Yaser Gholami Dehnavi, Mohsen GholamiAbstract:The adsorbent coated exchangers are the main part of adsorption refrigeration systems. Although coated exchangers are commercially available, the coating technique and the binder used are seldom revealed and left as a challenge for researchers. Dip-coating is the most commonly used coating technique. However, the variety of binders used indicates that choosing the appropriate binder is still a matter of trial-and-error. A series of experiments were performed to introduce acrylic Latex Emulsion (ALE) and bitumen Emulsion as the new binder for coating silica-gel powder on aluminum. The results indicate coats created by both Emulsion binders are stable but the bitumen Emulsion keeps its stability for about 10[Formula: see text]min after mixing with water and silica-gel powder. The effect of ALE binder and water concentrations on water vapor equilibrium and desorption kinetics was investigated. The outcomes indicated that the sample containing 0.8[Formula: see text]g water/g silica-gel, 0.08[Formula: see text]g ALE binder/g silica-gel shows the fastest desorption kinetic and the minimum capacity loss. The mechanical stability of this sample was evaluated by the shear test and the pull-off test. The measured values show that the prepared laminate withstands up to 27[Formula: see text]N/cm2 shear stress and 18[Formula: see text]N/cm2 tensile stress.
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Application of Acrylate Latex Emulsion as the Binder for Coating Aluminum Substrate by Silica-Gel Powder
International Journal of Air-conditioning and Refrigeration, 2019Co-Authors: Yaser Gholami Dehnavi, Mohsen GholamiAbstract:The adsorbent coated exchangers are the main part of adsorption refrigeration systems. Although coated exchangers are commercially available, the coating technique and the binder used are seldom re...
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Accelerated CO2 capture on adsorbent coated finned tube: An experimental study
Energy, 2019Co-Authors: Faezeh Esmaeili, Mohsen Gholami, Mohammad HojjatAbstract:Abstract In this study, the external surface of a finned tube was coated by 13X zeolite powder, and the CO2 adsorption equilibrium and dynamics were investigated experimentally. A slurry consisting of dionized water, 13X zeolite powder, and Acrylic Latex Emulsion (ALE) was used to coat the finned tube. The finned tube was coated by deep coating method. The equilibrium isotherms were measured at the range of 20–90 °C and fitted well by the dual-site Langmuir model. The average difference between the model and the results obtained from the experiments is about 2.5%. The nitrogen adsorption/desorption at 77 K was used for characterization of adsorbents. A 11% reduction was observed in pore volume and surface area. The dynamic test showed that the desorption of adsorbed CO2 takes place in about 14 s which is an order of magnitude faster than the fastest developed method. A conservative criterion was developed for estimating adsorbent working capacity. This criterion showed that the working capacities of the adsorbent are about 80% of its ideal values.
Yaser Gholami Dehnavi - One of the best experts on this subject based on the ideXlab platform.
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Application of Acrylate Latex Emulsion as the Binder for Coating Aluminum Substrate by Silica-Gel Powder
International Journal of Air-Conditioning and Refrigeration, 2019Co-Authors: Yaser Gholami Dehnavi, Mohsen GholamiAbstract:The adsorbent coated exchangers are the main part of adsorption refrigeration systems. Although coated exchangers are commercially available, the coating technique and the binder used are seldom revealed and left as a challenge for researchers. Dip-coating is the most commonly used coating technique. However, the variety of binders used indicates that choosing the appropriate binder is still a matter of trial-and-error. A series of experiments were performed to introduce acrylic Latex Emulsion (ALE) and bitumen Emulsion as the new binder for coating silica-gel powder on aluminum. The results indicate coats created by both Emulsion binders are stable but the bitumen Emulsion keeps its stability for about 10[Formula: see text]min after mixing with water and silica-gel powder. The effect of ALE binder and water concentrations on water vapor equilibrium and desorption kinetics was investigated. The outcomes indicated that the sample containing 0.8[Formula: see text]g water/g silica-gel, 0.08[Formula: see text]g ALE binder/g silica-gel shows the fastest desorption kinetic and the minimum capacity loss. The mechanical stability of this sample was evaluated by the shear test and the pull-off test. The measured values show that the prepared laminate withstands up to 27[Formula: see text]N/cm2 shear stress and 18[Formula: see text]N/cm2 tensile stress.
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Application of Acrylate Latex Emulsion as the Binder for Coating Aluminum Substrate by Silica-Gel Powder
International Journal of Air-conditioning and Refrigeration, 2019Co-Authors: Yaser Gholami Dehnavi, Mohsen GholamiAbstract:The adsorbent coated exchangers are the main part of adsorption refrigeration systems. Although coated exchangers are commercially available, the coating technique and the binder used are seldom re...
Andreas Roosen - One of the best experts on this subject based on the ideXlab platform.
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rheological characterization of water based slurries for the tape casting process
Ceramics International, 2002Co-Authors: Bernd Bitterlich, Christiane Lutz, Andreas RoosenAbstract:Rheological properties of aqueous tape casting slurries have been investigated as they strongly affect the tape casting process and the quality of the final product. The aqueous slurries consist of yttria stabilized zirconia and a polymeric Latex Emulsion as the binder. The viscosity, its time dependent behavior and the strength of the internal structure of the slurry were characterized by static and dynamic measurements using a cone-plate viscosimeter. The results were compared with the properties of the pure Latex Emulsion binder. The ceramic slurries exhibit the desired strong pseudoplastic, but non-thixotropic behavior. Due to the high solids content the slurries show distinctive elastic properties below a critical shear stress. Above the critical shear stress the internal structure is broken up and the viscous properties become predominant. The paper demonstrates that the measurement of the viscosity, its time dependent behavior and the strength of the internal structure of the slurry are excellent tools to characterize the suitability of a ceramic slurry for the tape casting process.
Bernd Bitterlich - One of the best experts on this subject based on the ideXlab platform.
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rheological characterization of water based slurries for the tape casting process
Ceramics International, 2002Co-Authors: Bernd Bitterlich, Christiane Lutz, Andreas RoosenAbstract:Rheological properties of aqueous tape casting slurries have been investigated as they strongly affect the tape casting process and the quality of the final product. The aqueous slurries consist of yttria stabilized zirconia and a polymeric Latex Emulsion as the binder. The viscosity, its time dependent behavior and the strength of the internal structure of the slurry were characterized by static and dynamic measurements using a cone-plate viscosimeter. The results were compared with the properties of the pure Latex Emulsion binder. The ceramic slurries exhibit the desired strong pseudoplastic, but non-thixotropic behavior. Due to the high solids content the slurries show distinctive elastic properties below a critical shear stress. Above the critical shear stress the internal structure is broken up and the viscous properties become predominant. The paper demonstrates that the measurement of the viscosity, its time dependent behavior and the strength of the internal structure of the slurry are excellent tools to characterize the suitability of a ceramic slurry for the tape casting process.
Suresh Kolekar - One of the best experts on this subject based on the ideXlab platform.
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Attributes of the Latex Emulsion processing and its role in morphology and performance in paints
Progress in Organic Coatings, 2011Co-Authors: Vipul Kumthekar, Suresh KolekarAbstract:Abstract This article explores the influence of process variation and neutralization of itaconic acid (IA) on polymer properties and paint performance. The study elaborated how the reaction pathway changes the acid distribution in the Latexes. The study also investigated the influence on paint performance of degree of neutralization of IA before its incorporation into Emulsion. The acid distribution study was done through the conductometric titration method. Latex film properties were studied through differential scanning calorimeter (DSC) and minimum film forming temperature (MFFT). These Latexes were formulated in the corresponding paint and study was done using scanning electron microscopy (SEM), which was further correlated with the performance properties of the paint such as scrub, gloss, whiteness and contrast ratio.
