Ink that can excite polychromatic light, its preparation method and application

Abstract

The invention discloses an ink capable of exciting polychromatic lights, a preparation method thereof and the application thereof. The ink capable of exciting the polychromatic lights comprises a first mixture, a second mixture and a third mixture, which are non-fluorescent in a normal state; the first mixture is water-based ink containing iron ions or copper ions; the second mixture contains 3-aminophthalhydrazide and hydrogen peroxide; in the second mixture, the mole ratio of the 3-aminophthalhydrazide to the hydrogen peroxide is (2.1-2.9):1; the third mixture contains normal butanol, Tb4O7 and Y203; the mass ratio of the first mixture to the second mixture and to the third mixture is (1-3):(1-8):(0.2-0.4). According to the ink capable of exciting the polychromatic lights, after being combined according to a specific mixing ratio, the three non-fluorescent mixtures in the normal state can generate blue lights with wavelengths of about 400 nm without being excited by the light of any waveband; the blue fluorescent lights are weakened after lasting for 30 seconds after being mixed; moreover, the ink can generate strong blue fluorescent lights under 360 nm ultraviolet lights and can generate strong green fluorescent lights under 256 nm ultraviolet lights.

Description

technical field [0001] The application belongs to the technical field of fluorescent anti-counterfeiting labels, and in particular relates to an ink capable of exciting polychromatic light, its preparation method and application. Background technique [0002] Today, with the surge in information volume, the security and accurate identification of information has become a topic of widespread concern in society. Existing security identification technologies generally have various technical defects such as complex production process, high price, poor precision, easy cracking, instability, and susceptibility to interference from external factors, which can no longer meet the needs of the development of information security in today's society. Taking two-dimensional barcodes as an example, the printed content can be seen intuitively, and can be easily copied using a readily available desktop copier or printing machine. [0003] Using anti-counterfeiting inks to form security mar...

AI Technical Summary

Problems solved by technology

Existing security identification technologies generally have various technical defects such as complex production process, high price, poor precision, easy cracking, instability, and susceptibility to interference from external factors, which can no longer meet the needs of the development of information security in today's society

Images