Wavelength-shift composite light-storing powder and method of manufacturing and applying the same

Abstract

A wavelength-shift composite light-storing powder and method of manufacturing and applying the same. Wherein, inorganic metal oxide and light-storing material containing rare earth elements are made to collide at high speed in an environment of extremely low temperature. The collision process makes said inorganic metal oxide to produce fusion reaction on surface of said light-storing material, that causes changes of lattice structure, to generate photon shift phenomenon and produce said wavelength-shift composite light-storing powder. Said composite light-storing powder is apt to engage cross-linked structure of thermoplastic polymer in a high temperature blending process, to achieve even distribution. Finally, through a filament process to produce successfully light-storing fibers capable of emitting lights of various wavelengths, to raise its heat resistance and wash durability.

What is claimed is: 
     
         1 . A method of manufacturing a light-storing fiber, comprising following steps:
 mixing a plurality of wavelength-shift composite light-storing powders of 1 to 30 wt %, a thermoplastic polymer of 50 to 95 wt %, a ring structure agent having a dipropylene or a tripropylene functional group of 0.05 to 5 wt %, a cross linkage agent of 0.01 to 5 wt %, and a dispersing agent of 0.01 to 5 wt % to form a mixed powder, wherein said plurality of wavelength-shift composite light-storing powders comprises:
 a light-storing material containing rare earth elements; and 
 an inorganic metal oxide forming and fusing on a surface of said light-storing material containing rare earth elements under a high speed gas flow and an environment with extremely low temperature −100 to −196° C.; 
   blending said mixed powder to make said thermoplastic polymer to be melted, and said melted thermoplastic polymer is cross-linked through using said cross linkage agent, such that said wavelength-shift composite light-storing powders are dispersed in said cross-linked thermoplastic polymer;   baking and drying said cross-linked thermoplastic polymer having said wavelength-shift composite light-storing powders dispersed therein to obtain a light-storing materbatch;   melting said light-storing materbatch and spin it into a filament; and   curling said filament into a light-storing fiber.   
     
     
         2 . The method of  claim 1 , wherein
 the temperature of said blending is 180° C. to 260° C.   
     
     
         3 . The method of  claim 1 , wherein
 the temperature of said drying is 85° C.   
     
     
         4 . The method of  claim 1 , wherein
 said thermoplastic polymer is polyester or nylon.   
     
     
         5 . The method of  claim 4 , wherein
 the intrinsic viscosity (IV) of said polyester is 0.2 to 2.0; while the relative viscosity (RV) of said nylon is 2.0 to 5.0.   
     
     
         6 . The method of  claim 1 , wherein
 said ring structure agent having said dipropylene or said tripropylene functional group is selected from a group consisting of:   diallylphthalate,diallyl succinate,diallyl tartramide,triallyl amine,triallyl trimesate, 2,2-thiobis(p-tert-octylphenolate)nickel,triallyl cyanurate,triallyl isocynaurate, (4-[[4-(aminocarbonyl)phenyl]azo]-N-(2-ethoxyphenyl)-3-hydroxynaphthalene-2-carboxamide) and triacryloylhexahydro-1,3,5-tri azine.   
     
     
         7 . The method of  claim 1 , wherein
 said cross linkage agent is potassium perfulfate, azobisisbutyronitrile, or benzildimethylketal.   
     
     
         8 . The method of  claim 1 , wherein
 said dispersing agent is a long carbon chain alkane dispersing agent.   
     
     
         9 . The method of  claim 1 , wherein
 the diameter of said light-storing fiber is 20 μm to 30 μm.   
     
     
         10 . The method of  claim 1 , wherein
 said light-storing fiber is a single-component original fiber, or a double-component fiber of a shell and core structure, such that said composite light-storing powder is formed into the shell or the core of said double-component fiber.