Element master batch suitable for anti-counterfeiting chemical fibers, and preparation method thereof

Abstract

The invention discloses an element master batch suitable for anti-counterfeiting chemical fibers. The element master batch comprises a matrix polymer, an anti-counterfeiting tracer and a polyolefin dispersant, wherein the anti-counterfeiting tracer is composed of at least two metal oxides, the content of metal elements contained in each metal oxide is controlled to have a fixed feeding mass ratio,the metal oxide compound is zinc oxide, molybdenum trioxide, zirconium dioxide, aluminum oxide, calcium oxide, strontium oxide, germanium dioxide or vanadium pentoxide, and in percentage by mass, thesum of the contents of metal elements contained in various metal oxides accounts for 5-50% of the element master batch. According to the invention, the element masterbatch provided by the invention can endow chemical fibers with both memory tracking property and recognition function, and has the advantages of high anti-counterfeiting strength and good anti-counterfeiting concealment.

Description

technical field [0001] The invention belongs to the field of chemical fibers with anti-counterfeiting function, and in particular relates to an element masterbatch suitable for anti-counterfeiting chemical fibers and a preparation method thereof. Background technique [0002] As a common anti-counterfeiting technology, anti-counterfeiting chemical fiber has been widely used in securities, banknotes, passports and other fields. At present, anti-counterfeiting chemical fibers are mainly monochromatic fluorescent fibers, and dual-band fluorescent fibers and multi-color segment dyed fibers, photochromic, infrared absorption anti-counterfeiting and other products have also appeared one after another, such as Chinese patents CN2731620Y, CN103850144B, and CN104963241B. With the continuous advancement of science and technology, the anti-counterfeiting features of single-color fluorescent fibers and dual-band fluorescent fibers are relatively simple and easy to forge, and their anti-...

AI Technical Summary

Problems solved by technology

With the continuous advancement of science and technology, the anti-counterfeiting features of single-color fluorescent fibers and dual-band fluorescent fibers are relatively simple and easy to forge, and their anti-counterfeiting strength cannot adapt to high-end security fields such as banknotes and passports; Poor, and it is a colored fluorescent fiber, the anti-counterfeiting feature is poorly concealed, and it is not suitable for high-end security fields such as banknotes and passports; photochromic and infrared absorption are easy to forge and are also susceptible to interference from other substances

[0003] At present, someone has also proposed a method for preparing marked cellulose fibers-CN101942707B, which discloses a dispersion liquid added in the preparation process of cellulose fibers. The dispersion liquid includes a metal-inorganic compound, a dispersant and water. The agent is fatty alcohol polyoxyethylene phosphate, sodium hexametaphosphate, nonylphenol polyoxyethylene ether, sodium polyacrylate or sodium butylnaphthalene sulfonate; it is determined by comparing the retention and addition of metal inorganic compounds in the fiber Judging, distinguishing and identifying textiles; however, on the one hand, it also has the defect of insufficient anti-counterfeiting, it is easy to be imitated and forged, and it is difficult to have memory tracking properties; on the other hand, the dispersion mentioned in it is only suitable for use in the preparation of cellulose fibers , and the preparation method of chemical fiber is completely different from that of cellulose fiber, so that it can be used in the anti-counterfeiting of chemical fiber