fig4

Figure 4. Thermal properties and shape stability of different samples: (A) DSC curves; (B) phase-change enthalpy values; (C) thermal conductivity; (D) TG curves; (E) DTG curves; and (F) anti-leakage performance at 80 °C. The error bars in (B) and (C) represent standard deviations from three repeated measurements, n = 3. PEG: Polyethylene glycol; PH: PEG/HDI; PEG: polyethylene glycol; HDI: hexamethylene diisocyanate; PHA: PEG/HDI/APP; APP: ammonium polyphosphate; PHH: PEG/HDI/HAPP; HAPP: hydroxylated ammonium polyphosphate; PHE: PEG/HDI/EG; EG: expanded graphite; PHAE: PEG/HDI/APP/EG; PHHE: PEG/HDI/HAPP/EG; DSC: differential scanning calorimeter; DTG: derivative thermogravimetric; TG: thermogravimetric.