Self-hardening thermoplastic foam for the inhibition of coal oxidation at low temperatures

Self-hardening thermoplastic foams (STFs), as an innovative technology mainly synthesized using 1 wt. % auxiliary agent (organic acid and polycaprolactone) and 99 wt. % foaming solution (polyethylene oxide, sodium silicate solution, sodium dodecyl sulfate, and water), were proposed to inhibit the self-oxidation of coal. When gas was injected into the synthetic solution using the self-made device with gas as the single power source, due to the...