Study of the influence of synthesis technologies on the properties of syntactic carbon foams

Abstract

The paper studied the influence of starting components and operating conditions of synthesis processes on the performance properties of syntactic carbon foams. The studies determined the behavior and ranges of hardness, ultimate compressive strength, apparent density, and thermal conductivity of foams made by template carbonization and using carbon microballoons, depending on heat treatment temperature. They determined the influence of a volatile blowing agent (sodium chloride) with wide and narrow fraction on a change in the studied properties of syntactic carbon foams.

Theoretical Description of Electrophysical Properties of Syntactic Carbon Foams

“…Thus, if we use formulae (10), (11) and know parameters , , , ; , , ; m p , which represent the structure of syntactic carbon foam, its structure features, as well as conductivity of its constituent materials: , , , , we can calculate and evaluate the influence of the listed parameters on it. It is to be noted that all these parameters depend on the physical-chemical properties of initial materials, composition and ratio of mixture components, used method for synthesis of syntactic carbon foams, process conditions of an operation chain.…”

“…They have unique heat transfer, stress-strain, electophysical and other performance properties [1][2][3][4][5][6]. Syntactic foams feature a regular structure based on a ratio of solid and gaseous volumes [7][8][9][10][11][12]. Gas bubbles in the foams are divided by extremely thin films to form together a film matrix which serves as a foam basis.…”