Effect of oxidant concentration on the microwave properties of oxidized carbon fibers

被引：1

作者：

Matushko, Igor P. ^{[1
]}

Malyshev, Volodymyr Yu. ^{[2
]}

Mariychuk, Ruslan T. ^{[3
]}

Boldyrieva, Olga Yu. ^{[4
]}

Mischanchuk, Oleksandr V. ^{[5
]}

Kuryliuk, Vasyl V. ^{[1
]}

Tsapyuk, Galyna G. ^{[4
]}

Lisnyak, Vladyslav V. ^{[4
,6
]}

Barsukov, Oleksii O. ^{[7
]}

Diyuk, Vitaliy E. ^{[4
]}

机构：

[1] Taras Shevchenko Natl Univ Kyiv, Phys Fac, 64-13,Volodymyrska Str, UA-01601 Kiev, Ukraine

[2] Taras Shevchenko Natl Univ Kyiv, Inst High Technol, Kiev, Ukraine

[3] Univ Presov, Fac Humanities & Nat Sci, Presov, Slovakia

[4] Taras Shevchenko Natl Univ Kyiv, Chem Fac, Kiev, Ukraine

[5] Natl Acad Sci Ukraine, Chuiko Inst Surface Chem, Kiev, Ukraine

[6] Inst Macromol Chem NAS Ukraine, Kiev, Ukraine

[7] Ukraine Acad Med Sci, Inst Gerontol, Kiev, Ukraine

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2024年 / 768卷 / 08期

关键词：

Electromagnetic shielding; microwave absorbing materials; microwave losses; oxidized carbon fibers; ELECTROMAGNETIC-RADIATION; ABSORBING PROPERTIES; COMPOSITES; ABSORPTION; FIELDS; NANOFIBERS; LEUKEMIA;

D O I：

10.1080/15421406.2024.2348197

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here, we report how the oxidation of carbon fibers (CFs) with H2O2 and HNO3 affects the CFs' microwave properties. The CFs were characterized by SEM and TEM, and oxygen-containing surface groups were quantified by thermal analysis methods. Treatment with H2O2 and HNO3 solutions increased the oxygen content to about 6 at% and up to 10 at%, respectively, which decreased the reflection loss and increased the transmission loss at 25.86-37.5 GHz. The microwave properties showed pronounced correlations with the concentration of HNO3 and not with H2O2, indicating that the HNO3 oxidant is more promising for microwave loss tuning.

引用

页码：164 / 178

页数：15

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