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Abstract

The present invention provides a thermo-regulated fiber and a preparation method thereof by using a new polymeric phase-change material and adopting a new fiber preparation method, and the resulting thermo-regulated fiber has good thermo-regulating properties and a good thermal stability. The thermo-regulated fiber has a composite structure, and the cross-sectional structure is an sea-island type or a concentric sheath/core type, characterised in that the polymeric phase-change material is a polyethylene glycol n-alkyl ether (structural formula: H(OCH₂CH₂)_mOC_nH2_n+1), where the repeating unit number m of the ethylene glycol is 1 to 100, the number n of carbon atoms in the n-alkyl is 11 to 30. The present invention further relates to a preparation method of a thermo-regulated fiber which includes one of the following processes: (1) A melt composite spinning process; (2) Solution composite spinning process; (3) Electrostatic solution composite spinning process. Further, the present invention is characterised as follows: (1) a new polymeric phase-change material polyethylene glycol n-alkyl ether is used; (2) Component A of the thermo-regulated fiber may form a continuous crystallization region; (3) The thermo-regulated fiber can be prepared in various forms by many preparation methods such as melt composite spinning, solution composite spinning and solution static composite spinning.

First Claim