Preliminary study on infrared spectral characteristics of mineral oil impregnated polymer materials under electro-thermal aging

2012 ◽  
Author(s):  
Dongxin He ◽  
Wei Wang ◽  
Kai Yang ◽  
Shengke Chen ◽  
Caipeng Yue
Keyword(s):  
Thermal Aging ◽  
Spectral Characteristics ◽  
Mineral Oil ◽  
Polymer Materials ◽  
Infrared Spectral ◽  
Preliminary Study

scholarly journals Improving anti-infrared radiation and heat insulation by potassium hexatitanate whisker-doped Al 2 O 3 –SiO 2 composite xerogel

2018 ◽  
Vol 5 (12) ◽  
pp. 180787
Author(s):  
Liang Furong ◽  
Liu Weijun ◽  
Han Xiuxiu ◽  
Zhang Boru ◽  
Zhang Shuhua
Keyword(s):  
Thermal Conductivity ◽  
Infrared Radiation ◽  
Near Infrared ◽  
Raw Materials ◽  
Sol Gel ◽  
Spectral Characteristics ◽  
Molar Ratio ◽  
Thermal Insulating ◽  
Infrared Spectral ◽  
Potassium Hexatitanate

Taking potassium hexatitanate whisker (PTW) modified by silane coupling agent KH550, aluminium nitrate inorganic salt and tetraethyl orthosilicate and deionized water, respectively, as infrared sunscreen, aluminium source and raw materials forming the network structure of a composite xerogel, a series of structurally intact PTW-doped Al 2 O 3 –SiO 2 composite xerogel thermal-insulating materials were prepared by the sol–gel method and dried under atmospheric pressure. The infrared spectral characteristics, infrared radiation transmittance, microstructures, morphology and thermal conductivity of different composite materials prepared have been determined by a Fourier transform infrared spectrometer, UV–visible–near-infrared spectrophotometer, X-ray diffractometer, scanning electron microscope and thermal conductivity tester. The results exhibit that when the Al to Si molar ratio is 1 : 9, the composite material with 5 wt% modified PTW shows the best infrared radiation blocking performance and the lowest thermal conductivity (0.0604 W m −1 K −1 ).

scholarly journals The mid-infrared spectral characteristics of blazars

2014 ◽  
Vol 10 (S313) ◽  
pp. 93-94
Author(s):  
Howard A. Smith ◽  
F. Massaro ◽  
R. D'Abrusco ◽  
A. Paggi ◽  
P. Cowperthwaite ◽  
...  
Keyword(s):  
Large Fraction ◽  
Spectral Characteristics ◽  
Continuum Emission ◽  
Spectral Features ◽  
Mid Infrared ◽  
Infrared Spectral ◽  
Infrared Spectrometer ◽  
Γ Ray ◽  
Followup Studies ◽  
The Continuum

AbstractWe previously reported discovering that blazars have distinctive infrared colors as seen in the WISE mission. Of particular note are γ-ray blazars, the locus of whose colors roughly overlaps with QSOs contours but which is more tightly delimited and bluer than ULIRGs and Seyferts. Since a large fraction of γ-ray sources are unassociated with any point source, but are expected to be blazars, identifying a WISE-candidate blazar in the γ-ray source field enables efficient followup studies. In an effort to better understand why blazars have these colors, we reduced and analyzed Spitzer Infrared Spectrometer (IRS) measurements on 73 blazars of varying types, some at several epochs. These spectra can be used to study the continuum emission (non-thermal), and search for atomic or other spectral features.

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