Study on the Experimental Ratio of New Cement-Based Composite Insulation Board

2013 ◽  
Vol 468 ◽  
pp. 32-35
Author(s):  
Xiao Long Li ◽  
Guo Zhong Li
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Raw Material ◽  
Optimal Dosage ◽  
Action Mechanism ◽  
Electron Microscopic ◽  
Scanning Electron Microscopic ◽  
Experimental Ratio ◽  
Scanning Electron

In the experiment, polystyrene particles, cement, fly ash, activator and fibers were used as raw material to prepare new cement-based composite insulation board by compression molding. Through the determination of best content of fly ash, the effects of fly ash on strength of composite insulation board were studied. Through the determination of the optimal content of activators, the effects of activators on the mechanical properties of composite insulation board were studied. Through the determination of the optimal dosage of fibers, the effects of fibers on performance of composite insulation board were studied. The morphology in the samples was observed by scanning electron microscopic, and the action mechanism of each component was studied.

scholarly journals Preparation of Reswellable Amorphous Porous Celluloses through Hydrogelation from Ionic Liquid Solutions

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3249 ◽  
Author(s):  
Satoshi Idenoue ◽  
Yoshitaka Oga ◽  
Daichi Hashimoto ◽  
Kazuya Yamamoto ◽  
Jun-ichi Kadokawa
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquid ◽  
Amorphous Structure ◽  
X Ray Diffraction ◽  
Electron Microscopic ◽  
X Ray ◽  
Liquid Solutions ◽  
Scanning Electron Microscopic ◽  
Porous Morphology ◽  
Scanning Electron

In this study, we have performed the preparation of reswellable amorphous porous celluloses through regeneration from hydrogels. The cellulose hydrogels were first prepared from solutions with an ionic liquid, 1-butyl-3-methylimidazolium chloride (BMIMCl), in different concentrations. Lyophilization of the hydrogels efficiently produced the regenerated celluloses. The powder X-ray diffraction and scanning electron microscopic measurements of the products suggest an amorphous structure and porous morphology, respectively. Furthermore, the pore sizes of the regenerated celluloses, or in turn, the network sizes of cellulose chains in the hydrogels, were dependent on the concentrations of the initially prepared solutions with BMIMCl, which also affected the tensile mechanical properties. It was suggested that the dissolution states of the cellulose chains in the solutions were different, in accordance with the concentrations, which representatively dominated the pore and network sizes of the above materials. When the porous celluloses were immersed in water, reswelling was observed to regenerate the hydrogels.

Scanning Electron Microscopy and X-Ray Diffraction Analysis of Various Size Fractions of Fly Ash

1984 ◽  
Vol 43 ◽  
Author(s):  
R. C. Joshi ◽  
G. S. Natt ◽  
R. L. Day ◽  
D. D. Tilleman
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fly Ash ◽  
Hydrofluoric Acid ◽  
Particle Surface ◽  
X Ray Diffraction ◽  
Electron Microscopic ◽  
X Ray ◽  
Scanning Electron Microscopic ◽  
Scanning Electron

AbstractX-ray diffraction and scanning electron microscopic analyses have been performed on the various Western Canadial fly ash fractions and on mixtures of cement and fly ash fractions. The ash mineralogy of hydrated and unhydrated fly ash samples was examined by x-ray diffraction. Results from a study of the morphology of ash particles etched in dilute hydrofluoric acid are also included. Scanning electron microscopy indicates that most of the reactive portion of the ash is on the particle surface. Also, as the fly ash particle size increases, the amount of crystalline SiO2 increases but the quantity of calcium containing compounds decreases. Crys~alline SiO2 (the majority of which is present in the +75 μm fraction) does not take part in self-hardening reactions but does appear to take part in pozzolanic reactions.

Preparation and Properties of Straw Fiber/Polylactic Acid Composites

2021 ◽  
Vol 1036 ◽  
pp. 122-129
Author(s):  
Kang Chen ◽  
Xian Jun Li ◽  
Yi Qiang Wu ◽  
Ying Feng Zuo
Keyword(s):  
Crystal Structure ◽  
Mechanical Properties ◽  
Polylactic Acid ◽  
Water Resistance ◽  
Differential Scanning Calorimetric ◽  
Mass Ratio ◽  
Electron Microscopic ◽  
X Ray ◽  
Scanning Electron Microscopic ◽  
Scanning Electron

Straw fiber (SF)/polylactic acid (PLA) composites were prepared from SF and PLA. The effects of the composite SF/PLA mass ratio investigated in terms of mechanical properties, water resistance, crystal structure, and thermal properties were investigated. These composites were characterized by scanning electron microscopic (SEM), X-ray diffractometric (XRD), differential scanning calorimetric (DSC), and thermogravimetric analyses (TGA). The results showed that, when the SF/PLA mass ratio was 3/7, the mechanical properties and water resistance of these composites were the best. When the mass ratio exceeded 3/7, the interface compatibility in the composites decreased. As the SF/PLA mass ratio increased, the crystallinity and the heat resistance of the composites were decreased.

scholarly journals New Scanning Electron Microscopic Method for Determination of Adipocyte Size in Humans and Mice*

Obesity ◽  
2007 ◽  
Vol 15 (7) ◽  
pp. 1657-1665 ◽  
Author(s):  
Wen Guo ◽  
Sherman Bigornia ◽  
Ilit Leizerman ◽  
Weisheng Xie ◽  
Marie McDonnell ◽  
...  
Keyword(s):  
Adipocyte Size ◽  
Electron Microscopic ◽  
Microscopic Method ◽  
Scanning Electron Microscopic ◽  
Electron Microscopic Method ◽  
Scanning Electron

Fabrication and Mechanical Properties of the Biocomposites between Water Hyacinth Fiber and Paper Mulberry

2017 ◽  
Vol 757 ◽  
pp. 73-77 ◽  
Author(s):  
Prapapan Khankham ◽  
Wim Nhuapeng ◽  
Wandee Thamjaree
Keyword(s):  
Mechanical Properties ◽  
Water Hyacinth ◽  
Natural Fiber ◽  
Fiber Diameter ◽  
Electron Microscopic ◽  
Scanning Electron Microscopic ◽  
The Matrix ◽  
Microscopic Morphology ◽  
Water Hyacinth Fiber ◽  
Scanning Electron

Fabrication and mechanical properties of the bio-composites between water hyacinth natural fiber and paper mulberry have been investigated. The fabrication was performed using the hand lay-up technique. Untreated and treated water hyacinth fiber were used as reinforcements, in the ratio of 5%, 10%, 15%, and 20% by weight, with paper mulberry as a biomatrix. It has been found that paper mulberry reinforced with 15 % treated WH fiber showed maximum tensile strength and impact energy. The optical and scanning electron microscopic morphology of the obtained composites displayed a rougher surface and the decrease in the fiber diameter when treated with sodium hydroxide (NaOH). This improved the interlocking between the matrix and its reinforcement.

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