Results 191 to 200 of about 4,094 (234)

Preparation of paraffin/expanded vermiculite with enhanced thermal conductivity by implanting network carbon in vermiculite layers

Chemical Engineering Journal, 2015
Abstract Paraffin/expanded vermiculite with modified porous carbon layer was prepared in the study. In the composite phase change materials (PCM), expanded vermiculite was impregnated with sucrose in the layer and then carbonated in situ in order to enhance thermal conductivity and improve the adsorption capacity of expanded vermiculite, which acted ...
Jinhong Li, Yong Deng
exaly   +2 more sources

Electrokinetic Properties of Vermiculite and Expanded Vermiculite: Effects of pH, Clay Concentration and Mono- and Multivalent Electrolytes

Separation Science and Technology, 2008
Abstract In this study, the zeta potential values of vermiculite and expanded vermiculite were measured to determine the effect of pH, clay concentration, and various mono- and multivalent electrolytes including NaCl, KCl, NH4Cl, NaNO3, NaClO4, Na2SO4, Na2CO3, Na3PO4·12H2O, MgCl2·6H2O, CaCl2·2H2O, BaCl2, SrCl2·6H2O, CuCl2·2H2O, CoCl2·6H2O, NiCl2, AlCl3,
Osman Duman, Sibel Tunc
exaly   +2 more sources

Effect of natural and expanded vermiculite clays on the properties of eco-friendly biopolyethylene-vermiculite clay biocomposites

Composites Part B: Engineering, 2019
Abstract In this work, the effect of natural (NV) and expanded (EV) vermiculite clays on the properties of biopolyethylene (BioPE)-vermiculite clay biocomposites was investigated. It was observed that the addition of NV and EV clays to BioPE increased the Heat Deflection Temperature (HDT) and improved the fire retardance.
Ruth B L Hanken, Pankaj Agrawal, Lisiane N L Santana   +2 more
exaly   +2 more sources

Preparation and microstructure of in-situ gel modified expanded vermiculite

Ceramics International, 2013
Abstract Expanded vermiculite is an important thermal insulation material with a layered micro-porous structure. In this paper, modified expanded vermiculite was obtained using an in-situ gel method. Under experimental conditions of n (epoxy propane) : n (A1(NO3)3) : n (ethanol) =5.5:1:30, the alumina aerogel was distributed evenly in the ...
Chunfeng Wang
exaly   +2 more sources

MINERALOGICAL FEATURESOF THE EXPANDED VERMICULITE ORES

Steklo i Keramika, 2022
The natural minerals of the Tebinbulak deposit, which are used as a thermal insulation material, have been studied, while their swelling coefficient depends on the size of the raw material and ranges from 3.47 to 7.67. The structure of the material has been studied by X-ray diffraction and infrared spectroscopy.
M. K. Rumi, E. M. Urazaeva, Sh. R. Nurmatov, S. K. Irmatova, Sh. A. Faiziev, E. P. Mansurova, M. A. Zufarov, N. E. Iskandarov   +7 more
openaire   +1 more source

Expanded vermiculite-filled flexible polymer composites

Journal of Elastomers & Plastics, 2021
This study focuses on the fabrication and characterization of vermiculite-filled flexible polymer composites. Exfoliated vermiculite was incorporated into triblock thermoplastic elastomer copolymer, styrene- b-(ethylene- co-butylene)- b-styrene (SEBS), at various levels from 1 to 15 wt% by a high shear mixer.
Mukaddes Sevval Cetin, Ozan Toprakci, Omer Suat Taskin, Abdullah Aksu, Hatice Aylin Karahan Toprakci   +4 more
openaire   +1 more source

Influence of expanded vermiculite powder and silica fume on properties of foam concretes

Construction and Building Materials, 2020
This study focuses on production of foam concrete that presents thermal insulation property. Foam concretes were produced using cement, expanded vermiculite powder, silica fume and the generated foam.
Fuat Koksal, Yusa Şahin, Osman Gencel   +2 more
exaly   +2 more sources

Effect of high temperature on mechanical and physical properties of lightweight cement based refractory including expanded vermiculite

Materials Research Innovations, 2012
Four different composite mixtures with varying amounts of expanded vermiculite were exposed to high temperatures of 300, 600, 900 and 1100 degrees C for 6 h.
Fuat Koksal, O Gencel, W Brostow
exaly   +2 more sources

Heating temperature effect on the hygroscopicity of expanded vermiculite

Ceramics International, 2021
Abstract The hygroscopicity of expanded vermiculite is one of major influence factors for thermal insulating performance. To explore the water absorption properties of expanded vermiculite prepared via electrical heating method, heating temperature effect on the hygroscopicity of expanded vermiculite was investigated under various humidity ...
Jinpeng Feng, Meng Liu, Wei Mo, Xiujuan Su   +3 more
openaire   +1 more source

Expanded vermiculite as an alternative adsorbent for the dysprosium recovery

Journal of the Taiwan Institute of Chemical Engineers, 2021
Abstract Background Dysprosium (Dy) is a critical resource for developing high-tech green energies, and its growing demand implying the need to recover it from secondary sources. Due to the known stability, availability, and high cation exchange capacity, adsorption on vermiculite can be promisor for this purpose. Methods This work evaluated the
Giani de Vargas Brião, Meuris Gurgel da Silva, Melissa Gurgel Adeodato Vieira   +2 more
openaire   +1 more source