Method for preparation of heat insulating synthetic fiber

D - Textiles – Paper – 01 – F

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D01F 1/10 (2006.01) C08K 3/22 (2006.01) D01F 1/02 (2006.01)

Patent

CA 2105044

A method for preparation of a synthetic fiber of a good heat insulation. In this method, the synthetic fiber is impregnated with ferrite particles in a step of a conventional synthetic fiber preparation process. The ferrite particles, having an average particle size of 0.1 - 10 µm and selected from the group of Co-Fe, Cu-Zn-Fe, Ba-Fe, Sr-Fe, Ni-Fe, Ni-Zn-Fe, Mn-Zn-Fe and Mn-Mg-Fe, are added to the synthetic fiber in an amount of 0.5 - 60 % by the weight of the synthetic fiber. The synthetic fiber is selected from the group of polyolefin, polyamide, polyester and polyacrylic fibers. The present invention provides a synthetic fiber showing a good heat insulating effect regardless of outside conditions, such as using place, using weather and outside energy source.

Méthode pour préparer une fibre synthétique, constituant un bon isolant thermique. Dans cette méthode, la fibre synthétique est imprégnée avec des particules de ferrite lors d'une étape correspondant à un procédé classique de préparation de fibre synthétique. Les particules de ferrite possédant une taille moyenne de 0,1-10 microns et choisies dans le groupe constitué de Co-Fe, Cu-Zn-Fe, Ba-Fe, Sr-Fe, Ni-Fe, Ni-Zn-Fe, Mn-Zn-Fe et Mn-Mg-Fe, sont ajoutées à la fibre synthétique à raison de 0,5-60 % en poids de la fibre synthétique. Cette dernière est choisie dans le groupe des fibres de polyoléfine, de polyamide, de polyester et de polyacrylique. La présente invention permet d'obtenir une fibre synthétique constituant un bon isolant thermique quelles que soient les conditions externes, comme le lieu d'utilisation, les facteurs météorologiques et la source d'énergie extérieure.

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