Open AccessStudy of thermophysical characteristics of composite sorption-active materials for life support systems of manned spacecraft and civil aviation
Author(s) -
L. L. Ferapontova,
I. V. Zakharov,
Yu. А. Ferapontov,
И. А. Курзина,
V. N. Grunski
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1989/1/012012
Subject(s) - sorption , materials science , thermal conductivity , composite material , composite number , porosity , thermal analysis , matrix (chemical analysis) , polymer , adsorption , differential thermal analysis , filler (materials) , chemical engineering , thermal , chemistry , thermodynamics , organic chemistry , physics , diffraction , optics , engineering
The method of differential thermal analysis (DTA) was used to study the heat resistance of composite sorption-active materials (CSAM) based on a matrix of fluoroplast and NaX crystallites. Decrease in the temperature of thermal destruction of the polymer matrix by about 90°C was found with an increase in the NaX content in KCAM from 2 to 25% by weight. Using the original method, the thermal conductivity was also studied. The analysis of the totality of the obtained results suggests that the studied parameters depend on the ratio of adsorbent-filler/polymer matrix: with an increase in the binder content in the CSAM from 5 to 25 wt. % thermal conductivity decreases from 0.227 to 0.184 W/mk. This pattern is due to the growth of CSAM mesopores filled with air. The hypothesis is confirmed by the analysis of the secondary porous structure of KSAM