An FT‐IR based instrument for measuring spectral emittance of material at high temperature

In this paper, a permeable steel-slag–bitumen mixture (PSSBM) was first prepared according to the designed mixture ratio. Then, the interaction characteristics between steel slag and bitumen were studied. The chemical interaction between bitumen and steel slag was explored with a Fourier-transform infrared spectrometer (FT-IR). The influence of steel-slag chemistry, mineral composition, and bitumen reaction on phase angle, complex shear modulus (CSM), and rutting factor was explored with dynamic shear rheological (DSR) tests. The PSSBM had better properties, including high permeability, water stability, Marshall stability, high-temperature (HT) stability, and low volume-expansion rate. Bitumen-coated steel slag can prevent heavy-metal ions from leaching. In the infrared spectra of the mixture of a chemical component of steel slag (calcium oxide) and bitumen, a new absorption peak at 3645 cm−1 was ascribed to the SiO–H stretching vibration, indicating that new organic silicon compounds were produced in the chemical reaction between calcium oxide and bitumen. SiO–H had an obvious enhancement effect on the interfacial adhesion and high-temperature rheological property of the mixture. In the mineral components of steel slag, dicalcium and tricalcium silicate reacted with bitumen and generated new substances. Chemical reactions between tricalcium silicate and bitumen were significant and had obvious enhancement effects on interfacial adhesion and high-temperature rheological properties of the mixture. The results of FT-IR and DSR were basically consistent, which revealed the chemical-reaction mechanism between steel-slag microcomponents and bitumen at the interface. SEM results showed that pits and grooves on the surface of the steel-slag aggregate, and the textural characteristics provide a framework-like function, thus strengthening the strength and adhesion of the steel-slag–bitumen aggregate interface.

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Study on Synthesis and Characterization of Unsaturated Polyester by Enzyme-Catalyzed

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.575-576.67 ◽

2013 ◽

Vol 575-576 ◽

pp. 67-70

Author(s):

Fen Juan Shao ◽

Qun Yang ◽

Lan Ying Li ◽

Da Nian Lu

Keyword(s):

High Temperature ◽

Unsaturated Polyester ◽

Soxhlet Extraction ◽

Side Chain ◽

Synthesis And Characterization ◽

Cross Linking ◽

Cross Link ◽

H Nmr ◽

Ft Ir

Unsaturated polyester was prepared with adipic acid (AA), fumaric acid (FA), itaconic acid (IA) and 1, 6-hexanediol (HD) by enzyme-catalyzed polmerization. The insoluble gel fraction (Qs), as the cross-linking degree of cured unsaturated polyesters which could be self-cross-linked at high temperature through C=C in it, was got by Soxhlet Extraction. The properties were investigated by FT-IR, 1H NMR, DSC, XRD and so on. The results indicated that the C=C in unsaturated diacids reduced the acitvity of N435, which affected the polmerization. With the introduction of C=C of IA or FA, the Mn of polyester reduced. The C=C could self-cross-link under high temperature for lengthy time. The higher the temperature and the longer the time, the Qs increased. As the C=C of IA was in the side chain, it could move easily. Then Qs of poly (AA-co-IA-co-HD) was higher than ploy (AA-co-FA-co-HD). With the increased content of unsaturated diacid, Qs increased. And the biodegradation of cross-linked polyesters became worse.

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Effects of Disperse Dyes on Dyeing of Ethylated Chinese Fir Powder

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.788.241 ◽

2013 ◽

Vol 788 ◽

pp. 241-245 ◽

Cited By ~ 1

Author(s):

Ze Hua Yu ◽

Jing Fang Tang ◽

Xiao Qiao Wan ◽

Xiu Chen ◽

Wei Liu ◽

...

Keyword(s):

High Pressure ◽

High Temperature ◽

Smooth Surface ◽

Ph Value ◽

Polyester Fabric ◽

Chinese Fir ◽

Disperse Dyes ◽

Wash Fastness ◽

Ft Ir ◽

Reflection Of Light

The dyeing properties of ethylated Chinese fir powder with disperse dyes under high temperature and high pressure were investigated in this paper, the dyeing results indicated that the color shade of dyed ethylated fir is similar to that of dyed polyester fabric while PH value of dyeing solution is between 4~5, and the dyed sample is of a good wash fastness. At the same time, the characteristics of the samples were analyzed by FT-IR and SEM, it indicated that dyes molecules were adsorbed on the surface and went into the microporous of ethylated fir powder, so that brighter color were observed due to the fact that the ethylated fir powder leads to a smooth surface which being favorable for the reflection of light.

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System for the Measurement of Spectral Emittance at High Temperature

AIAA Journal ◽

10.2514/3.61463 ◽

1976 ◽

Vol 14 (9) ◽

pp. 1303-1310 ◽

Cited By ~ 11

Author(s):

James O. Hylton ◽

Robert L. Reid

Keyword(s):

High Temperature ◽

Spectral Emittance

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Single-source-precursor Synthesis and High-temperature Behavior of SiC Ceramics Containing Boron

High Temperature Materials and Processes ◽

10.1515/htmp-2013-0123 ◽

2014 ◽

Vol 33 (6) ◽

pp. 563-570 ◽

Cited By ~ 1

Author(s):

Miaomiao Gui ◽

Yunhui Fang ◽

Zhaoju Yu

Keyword(s):

High Temperature ◽

Temperature Behavior ◽

Ceramic Yield ◽

One Pot ◽

High Temperature Behavior ◽

Sic Ceramics ◽

Sic Ceramic ◽

Single Source Precursor ◽

Ceramic Microstructure ◽

Ft Ir

AbstractIn this paper, a hyperbranched polyborocarbosilane (HPBCS) was prepared by a one-pot synthesis with Cl2Si(CH3)CH2Cl, Cl3SiCH2Cl and BCl3 as the starting materials. The obtained HPBCS was characterized by GPC, FT-IR and NMR, and was confirmed to have hyperbranched structures. The thermal property of the resulting HPBCS was investigated by TGA. The ceramic yield of the HPBCS is about 84% and that of the counterpart hyperbranched hydridopolycarbosilane is only 45%, indicating that the introduction of boron into the preceramic polymer significantly improved the ceramic yield. With the polymer-derived ceramic route, the final ceramics were annealed at 1800 °C in argon atmosphere for 2 h in order to characterize the microstructure and to evaluate the high-temperature behavior. The final ceramic microstructure was studied by XRD and SEM, indicating that the introduction of boron dramatically inhibits SiC crystallization. The boron-containing SiC ceramic shows excellent high-temperature behavior against decomposition and crystallization at 1800 °C.

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Production of Nanosilica from Iron Tailing and Characterization

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.295-297.282 ◽

2011 ◽

Vol 295-297 ◽

pp. 282-285

Author(s):

Feng Feng Li ◽

Ming Xi Zhang ◽

Yi Shen ◽

Du Jiao ◽

Gui Qin Hou ◽

...

Keyword(s):

Thermal Analysis ◽

High Temperature ◽

Silicon Dioxide ◽

Chemical Deposition ◽

Deposition Method ◽

Analysis Techniques ◽

Chemical Deposition Method ◽

Ft Ir ◽

Thermal Analysis Techniques ◽

Amorphous Matter

Nanosilica was extracted from iron tailing by the chemical deposition method, involving pickling, filters washing, alkali dissolving of pickling dregs in high temperature, precipitating silica controlled by diluted acid and so on. The product has been studied by SEM, XRD, FT-IR, and thermal analysis techniques, etc. These study shows that the nanosilica is a kind of amorphous matter consists of hydrous silicon dioxide (97.076%) with small amount of sodium and aluminum trapped inside the Si–O network. The diameter of globular silica particles is 30-50 nm.

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Measurement of Radiative Properties of Ash and Slag by FT-IR Emission and Reflection Spectroscopy

Journal of Heat Transfer ◽

10.1115/1.2911295 ◽

1992 ◽

Vol 114 (2) ◽

pp. 458-464 ◽

Cited By ~ 33

Author(s):

J. R. Markham ◽

P. E. Best ◽

P. R. Solomon ◽

Z. Z. Yu

Keyword(s):

Chemical Properties ◽

Radiative Properties ◽

Reflection Spectroscopy ◽

Sample Heating ◽

Heating Device ◽

Spectral Emittance ◽

Ft Ir ◽

Physical And Chemical ◽

Ir Emission ◽

And Chemical Properties

This article presents laboratory measurements of the radiative properties of ash and slag deposits that have been extracted from combustion devices. The measurements were made by a technique employing a sample heating device that is coupled to a Fourier Transform Infrared (FT-IR) spectrometer to measure the sample’s emission and directional-hemispherical reflection. By this technique, the temperature at the measurement point and the spectral emittance of the surface are both obtained. These measurements are then related to the physical and chemical properties of the surface to determine what controls the radiative properties. The measurements have shown that the physical state of a deposit (i.e., fused, sintered, or packed particles) greatly influenced the measured spectral emittance. The results were in agreement with mathematical models that account for the physical properties.

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Characterization of magnetic biochar amended with silicon dioxide prepared at high temperature calcination

Materials Science-Poland ◽

10.1515/msp-2016-0112 ◽

2016 ◽

Vol 34 (3) ◽

pp. 597-604 ◽

Cited By ~ 2

Author(s):

Shams Ali Baig ◽

Zimo Lou ◽

Malik T. Hayat ◽

Ruiqi Fu ◽

Yu Liu ◽

...

Keyword(s):

High Temperature ◽

Silicon Dioxide ◽

Environmental Remediation ◽

Xrd Analysis ◽

X Ray Diffraction ◽

Sem Images ◽

Magnetic Biochar ◽

Ft Ir ◽

High Temperature Calcination

AbstractCalcination is considered to increase the hardness of composite material and prevent its breakage for the effective applications in environmental remediation. In this study, magnetic biochar amended with silicon dioxide was calcined at high temperature under nitrogen environment and characterized using various techniques. X-ray diffraction (XRD) analysis revealed elimination of Fe3O4 peaks under nitrogen calcination and formation of Fe3Si and iron as major constituents of magnetic biochar-SiO2 composite, which demonstrated its superparamagnetic behavior (>80 A2·kg−1) comparable to magnetic biochar. Thermogravimetric analysis (TGA) revealed that both calcined samples generated higher residual mass (>96 %) and demonstrated better thermal stability. The presence of various bands in Fourier transform infrared spectroscopy (FT-IR) was more obvious and the elimination of H–O–H bonding was observed at high temperature calcination. In addition, scanning electron microscopy (SEM) images revealed certain morphological variation among the samples and the presence of more prominent internal and external pores, which then judged the surface area and pore volume of samples. Findings from this study suggests that the selective calcination process could cause useful changes in the material composites and can be effectively employed in environmental remediation measures.

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