Abstract: Pulverized SHENFU coal (SFC) was treated with ferric chloride (FeCl3·6H2O) to prepared active coal via solid phase ion exchange. The active coal was blended with low-density polyethylene (PE-LD). Differential scanning calorimetry (DSC) and other analytical methods were used to study the pyrolysis reaction and thermal decomposition kinetics of SFC, PE-LD, and PE-LD/SFC composite and the data was analyzed with Kissinger and Flynn-Wall-Ozawa methods. The activation energy of SFC was calculated as at 340~380 ℃113 kJ/mol and at 520~550 ℃ 149 kJ/mol. When adding 10 wt % and 20 wt % Fe3+ modified SFC, the thermal activation energies at the low temperature (120~135 ℃) of the PE-LD/SFC composites were 182.87 kJ/mol and 250.62 kJ/mol. When adding 10 wt % Fe3+ modified SFC, the reactivity of coal and PE-LD was better, so there must be coordinated action between two points.

Key words: low-density polyethylene, coal, thermal reaction, differential scanning calorimetry