The effect of silicon carbide (10 – 40 wt.%) on the physicomechanical and electrophysical characteristics of composites was considered. The effect of an additive on the radio absorption capacity of the material was determined by measuring the coefficients of absorption, transmission, and reflection of electromagnetic radiation as well as the dielectric constant of the material. It was found that introducing 30 wt.% silicon carbide into the composition increases the strength in compression to 2.4 MPa due to the reinforcing role of silicon carbide needle crystals. The additional dielectric losses and the average pore size of the composite on introduction of 30% silicon carbide afford an absorption coefficient of electromagnetic radiation from 95 to 98% in the frequency range 120 – 250 GHz. The results of this work expand the areas of application of porous glass composites as well as the raw material base for obtaining the material.

考虑了碳化硅（10 – 40 wt.%）对复合材料物理机械和电物理特性的影响。添加剂对材料无线电吸收能力的影响是通过测量电磁辐射的吸收、透射和反射系数以及材料的介电常数来确定的。发现由于碳化硅针状晶体的增强作用，将30wt.％的碳化硅引入组合物中可将压缩强度提高至2.4MPa。引入 30% 碳化硅后，复合材料的额外介电损耗和平均孔径提供了 120 – 250 GHz 频率范围内 95% 至 98% 的电磁辐射吸收系数。