Melt-spinning grains containing thermal-stable phase-change material and preparation method thereof

A micro-capsulated thermal-stable phase-change polymer is mixed with a melt-spinning polymer, and melt-spinning grains are obtained after processing the mixture described above. The thermal-stable phase-change polymer has a polyether main chain and two fatty acyl terminals. The polyether main chain is polyethylene glycol or polytetramethylene glycol. The two fatty acyl terminals are preferably stearoyl group, palmitoyl group, or lauroyl group.