Abstract:

In order to obtain change material with high thermal stability of the phase, the morphologically stable phase change materials (PCMg) were prepared by nano hybridization firstly with poly (ethylene glycol) as phase change material and porous nanomaterials as carrier. Then polyamide 6 (PA6) was used as cortex, and blending material of PCMg / PA6 was used as core layer. The sheath-core mass composite energy storage and thermo-regulated fibers of polyamide 6 were prepared by melt spinning according to sheath-core ratio 3：7. The structure and properties of the fibers were characterized by means of differential scanning calorimetry, thermogravimetric analyzer, K-type thermocouple thermometer, field emission scanning electron microscope, multifilament strength tester and so on. The results show that strength of the energy storage and thermo-regulated fibers of polyamide 6 is 2.52 cN/dtex, and the elongation at break of fibers is 30.5%. The fiber can achieve intelligent thermostat in the temperature range of -10.71 - 22.87℃ and 38.96 - 58.33℃. When the addtion amount of PCMg is 10%, the enthalpy reached up to about 9.02 J/g

Key words: energy storage and thermo-regulated fiber, sheath=core composite fiber, melt spinning, polyamide 6, hybrid material