Abstract
Nowadays polymer matrix-based composite material with various carbon fillers are widely used to protect radioequipment from different interference, to improve characteristics of radar absorbing coatings. Current synthesis processes are sophisticated and rather costly. The challenge is to develop new methods of producing composite materials by efficient knowledge intensive technologies to reduce the cost of products. The paper studies possibility of producing composite material on the basis of elastic polyurethane foam with carbon fillers using polyurethane impregnation in nonequilibrium black carbon suspension. Suspension composition: running water and carbon-bearing powders of nanometer range: fullerene black carbon, Taunite (multi-layer carbon nano tube material), technical carbon T900, wood soot. Nonequilibrium suspension was produced by treatment in hydrodynamic generator of rotor type (cavitation mode). Angular rotation speed of the rotor ω = 10000 rpm.
Highlights
To protect equipment from external interference is a challenge of today’s material science and design
Object of research The objects under study are porous composite materials made by impregnation of elastic polyurethane foam in low-concentration carbon black suspensions produced by treatment in rotor-type hydrodynamic generator in cavitation mode
The study showed that polyurethane foam most actively absorbs carbon from the fullerene-containing carbon black suspension (Table)
Summary
To protect equipment from external interference is a challenge of today’s material science and design. To ensure electromagnetic compatibility of the screening device and the source of radiation, to reduce the weight of the structure requires development of new volume composite radio materials. Concentration conditions under which the conducting graphite coatings can form on cardboard and polymer dielectric substrates by settling graphite particles from colloid graphite dispersions were studied in [1]. Effect of fullerene modifier on radar-absorbent characteristics of fibrous composite material and structure of panel from the same material were studied in [2]. Measurements of absorption coefficient of panels with modifier and without it are given. Feasibility of applying the proposed compositions in aircraft structures is evaluated
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