Using multilayer polymer PI/Pb composites for protection against X-ray bremsstrahlung in outer space

Abstract

This paper presents data about the radiation-protective characteristics of multilayer polyimide/lead (PI/Pb) composites for X-ray radiation. Multilayer composites were obtained by collecting lead-filled polyimide track membranes into a sandwich of the required thickness. ( Am) 241 = (E 59.5 keV) and ( Cd) 109 = (E 88 keV) isotopes were used as an X-ray radiation source. To assess the effect of lead filler particle size on the radiation-protective characteristics of a multilayer structure, data are presented on mathematically modeling the passage of 10-88 keV wavelength X-rays with through a composite. The experimental values of the attenuation coefficients of X-ray waves for a multilayer structure are 12-15% higher than the calculated ones. The increase in the attenuation coefficients obtained experimentally, compared with theoretical, is explained by using the proposed multilayer structure with lead particles in the nanoscale range.

Effect of electron irradiation on polyimide composites based on track membranes for space systems

“…The authors synthesized PI nanocomposite films based on PI track membranes filled with nano-dispersed lead. In previous works, the high resistance of the developed nanocomposites to X-ray and gamma radiation was established (Cherkashina et al, 2020b;Cherkashina et al, 2021). This work presents data on the stability of nanocomposite based on PI track membranes filled with nano-dispersed lead to electron irradiation.…”

Synthesis of PI/POSS nanocomposite films based on track nuclear membranes and assessment of their resistance to oxygen plasma flow

“…Track membranes are the thinnest films, 10-25 μm in size, in which there are many through holes -tracks on the nanoscale. Earlier, we obtained data on the possibility of synthesizing multilayer composites based on PI track membranes filled with nano-dispersed fillers [32,33]. The introduction of POSS structures into the pores of track membranes will allow the filler to be uniformly distributed throughout the entire volume of the PI matrix and prevent the formation of POSS conglomerates, which is impossible with other methods of composite synthesis.…”