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 wavelength-shift composite light-storing powder, comprising:
 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.   
     
     
         2 . The wavelength-shift composite light-storing powder of  claim 1 ,
 wherein said inorganic metal oxide is present in an amount by weight of 0.3 to 0.8%.   
     
     
         3 . The wavelength-shift composite light-storing powder of  claim 1 ,
 wherein said light-storing material containing rare earth elements is present in an amount by weight of 0.1 to 5%.   
     
     
         4 . The wavelength-shift composite light-storing powder of  claim 1 ,
 wherein said light-storing material containing rare earth elements is SrAl 2 O 4 :Eu,Td.   
     
     
         5 . The wavelength-shift composite light-storing powder of  claim 1 ,
 wherein said inorganic metal oxide is selected from a group consisting of zinc oxide, aluminum oxide, calcium oxide, magnesium oxide, zirconium oxide, and strontium oxide.   
     
     
         6 . The wavelength-shift composite light-storing powder of  claim 1 ,
 wherein said wavelength-shift composite light-storing powder is used to produce a light-storing masterbatch, which comprises:   said 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 %.   
     
     
         7 . The wavelength-shift composite light-storing powder of  claim 6 ,
 wherein said thermoplastic polymer is polyester or nylon.   
     
     
         8 . The wavelength-shift composite light-storing powder of  claim 7 ,
 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.   
     
     
         9 . The wavelength-shift composite light-storing powder of  claim 6 ,
 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-triazine.   
     
     
         10 . The wavelength-shift composite light-storing powder of  claim 6 ,
 wherein said cross linkage agent is potassium persulfate, azobisisobutyronitrile, or benzildimethylketal.   
     
     
         11 . The wavelength-shift composite light-storing powder of  claim 6 ,
 wherein said dispersing agent is a long carbon chain alkane dispersing agent.