Spectral radiative properties of black PMMA

Published: 14 March 2022| Version 1 | DOI: 10.17632/8wpgzrp33s.1
Contributors:
Farid Alinejad,
,
,

Description

Absorbance_50C_FTIR-ATR.xlsx: Absorbance data of black PMMA measured by FTIR-ATR spectrometer using sample thickness of 175 µm at temperature of 50 C Absorbance_150C_FTIR-ATR.xlsx: Absorbance data of black PMMA measured by FTIR-ATR spectrometer using sample thickness of 175 µm at temperature of 150 C Absorption coefficient.xlsx: Extracted absorption coefficient of black PMMA for the wavelength range from 0.25 to 25 µm Absorptive index.xlsx: Absorptive index of black PMMA for the wavelength range from 0.25 to 25 µm Diffuse reflectivity.xlsx: Diffuse reflectivity of black PMMA measured by UV-Vis-NIR spectrometer for the black PMMA sample with thickness of 6 mm Effective absorption coefficient.xlsx: Calculated effective absorption coefficient of black PMMA for the gray modeling of radiation as a function of source temperature and depth from the sample surface Refractive index.xlsx: Extracted refractive index of black PMMA for the wavelength range from 0.25 to 25 µm Total reflectivity.xlsx: Total reflectivity of black PMMA measured by UV-Vis-NIR spectrometer for the black PMMA sample with thickness of 6 mm Transmissivity_33um_FTIR.xlsx: Measured transmissivity for the black PMMA sample with thickness of 33 µm using FTIR spectrometer Transmissivity_50um_FTIR.xlsx: Measured transmissivity for the black PMMA sample with thickness of 50 µm using FTIR spectrometer Transmissivity_65um_FTIR.xlsx: Measured transmissivity for the black PMMA sample with thickness of 65 µm using FTIR spectrometer Transmissivity_50um_UV-Vis-NIR.xlsx: Measured transmissivity for the black PMMA sample with thickness of 50 µm using UV-Vis-NIR spectrometer Transmissivity_73um_UV-Vis-NIR.xlsx: Measured transmissivity for the black PMMA sample with thickness of 73 µm using UV-Vis-NIR spectrometer

Files

Steps to reproduce

Transmissivity, reflectivity, and absorbance data were collected by doing spectroscopy for different thicknesses of black PMMA samples. Absorption coefficient was calculated from measured transmissivity and applying modified Beer's law and linear regression method. Absorptive index was calculated from absorption coefficient by their relation. Refractive index was extracted using measured reflectivity and applying Kramers-Kronig transform and Fresnel relation. Finally, the effective absorptive coefficient was calculated using black-body radiation weighted total transmissivity for different source temperatures and depths.

Institutions

Aalto-yliopisto

Categories

Optics, Polymer, Fire Safety

License