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Preparation method of ultraviolet fluorescent-green plastic film by taking rare-earth phosphate glass as photochromic agent and application thereof in anti-counterfeiting aspects

A technology of rare earth phosphate and phosphate glass, which is applied in the direction of instruments, identification devices, seals, etc., can solve the problems of decreased mechanical properties, poor compatibility, and reduced transparency of polymer materials, and overcome the impact on the human body and the environment. Harmful, the preparation process is simple, and the effect of reducing polarity is poor

Inactive Publication Date: 2015-01-07
BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Secondly, most rare earth compounds are highly polar and have poor compatibility with organic polymers with low polarity. In particular, rare earth inorganic compounds have low affinity with resins, resulting in a decrease in the mechanical properties of polymer materials doped with rare earth elements. , the transparency decreases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The oxides converted into the mass percentage of the glass formula are: P 2 o 5 60%; 2 O 4%; Na 2 O 15%; K 2 O 15 ; Tb 2 o 3 4%, Ce 2 o 3 2%. where P 2 o 5 by NH 4 h 2 PO 4 Introduce; Li 2 O is introduced by lithium carbonate, Na 2 O is introduced by sodium carbonate, K 2 O is introduced by potassium carbonate, Tb 2 o 3 Introduced directly with terbium trioxide, Ce 2 o 3 Introduced directly with cerium oxide. Add the glass batch material into the alumina crucible, heat it in a silicon carbide rod furnace at 900°C for 20 minutes, pour the glass melt on a double-roller tablet machine cooled with ice-water mixture, and press it into glass flakes, and then grind them in a high-pressure jet mill. Finely ground to a particle size of less than 300nm white fluorescent glass powder.

[0017] The prepared fluorescent glass powder and white oil were selected as the coupling agent, respectively, with commonly used plastics, including polypropylene (PP), polyeth...

Embodiment 2

[0019] The oxides converted into the mass percentage of the glass formula are: P 2 o 5 75%;Na 2 O 16%; Tb 2 o 3 8%, Ce 2 o 3 1%. where P 2 o 5 by NH 4 h 2 PO 4 Introduce; K 2 O is introduced by potassium carbonate, Na 2O is introduced by sodium carbonate, K 2 O is introduced by potassium carbonate, Tb 2 o 3 Introduced directly with terbium trioxide, Ce 2 o 3 Introduced directly with cerium oxide. After being kept at 900°C for 20 minutes in a silicon carbide rod furnace, the glass melt is poured on a double-roll tablet machine cooled with ice-water mixture and pressed into glass flakes, and then ground in a high-pressure jet mill until the particle size is less than 300nm. Fluorescent glass powder.

[0020] The prepared fluorescent glass powder and the silane coupling agent KH570 are used as the coupling agent, respectively, with commonly used plastic masterbatches, including polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polycarbonate ( PC...

Embodiment 3

[0022] The oxides converted into the mass percentage of the glass formula are: P 2 o 5 80%;Na 2 O 10%; Li 2 O 5%; Tb 2 o 3 3%, Ce 2 o 3 2%. where P 2 o 5 by NH 4 h 2 PO 4 Introduce; Na 2 O is introduced by sodium carbonate, Tb 2 o 3 Introduced directly with europium trioxide, Ce 2 o 3 Introduced directly with cerium oxide. Add the glass batch material into the alumina crucible, heat it in a silicon carbide rod furnace at 900°C for 30 minutes, pour the glass melt on a double-roll tablet machine cooled with ice-water mixture, and press it into a glass sheet, and then press it into a glass sheet under high-pressure airflow Grinding in the mill until the particle size is less than 300nm white fluorescent glass powder.

[0023] The prepared fluorescent glass powder and stearic acid are used as surface modifiers, and are respectively mixed with commonly used plastics, including polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polycarbonate (PC), pol...

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Abstract

The invention relates to a preparation method of an ultraviolet fluorescent-green plastic film by taking rare-earth phosphate glass as a photochromic agent and application thereof in anti-counterfeiting aspects. Aiming at the problems of doped rare-earth fluorescent polymer materials, such as large polarity difference between an inorganic rare-earth fluorescent agent and a polymer material, rare-earth fluorescent concentration quenching, fluorescence stability and the like, the ultraviolet fluorescent-green plastic film has the characteristics that the phosphate glass is used as the substrate, Tb<3+> ion is used as a fluorescent activator, and Ce<3+> ion is used as a sensitizing agent, so that the fluorescent concentration quenching phenomenon is overcome, and the Eu addition amount and the fluorescence efficiency are increased through the synergistic effect of the phosphate glass matrix, Tb<3+> and Ce<3+> in the formula; glass fragments are pressed by using a melting method and an ice water mixture cooled glass tablet press, and then, the phosphate glass:Tb<3+>, Ce<3+> fluorescent powder with the granularity of being less than 300 nm is prepared through high-pressure grinding of an air-current mill; a surface modifier is added, fluorescent powder and polymer master-batch are molten and blended, and the plastic film obtained by being blown is white and transparent in the sun and emits beautiful green light under irradiation of ultraviolet light; and the plastic film has special transmission spectrum and can be used as an anti-counterfeiting packaging film, an anti-counterfeiting label printing substrate and an anti-counterfeiting safety line substrate.

Description

technical field [0001] The invention relates to a preparation method of an ultraviolet fluorescent green plastic film using rare earth phosphate glass as a photochromant and its application in anti-counterfeiting, belonging to the fields of rare earth polymer materials and anti-counterfeiting. Background technique [0002] There are basically two methods for adding rare earth elements to polymer materials: (1) Rare earth compounds are uniformly dispersed into monomers or polymers as dopants to form rare earth polymers that exist in a doped manner, which is called doping. Heterogeneous rare earth polymers. (2) Synthesize rare earth complex monomers that can undergo polymerization reactions by chemical bonding, and then polymerize with other organic monomers to obtain polymer copolymers, or rare earth ions and ligand groups on the polymer chain such as carboxyl, The sulfonic acid group reacts to obtain a rare earth polymer complex, and the rare earth ion exists in the polymer...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/06C08L27/06C08L69/00C08L67/02C08K9/00C08K7/28C08K5/5425C08K5/01C08J3/22C03C12/00G09F3/02
CPCC03C12/00C08J3/226C08J2423/06C08J2423/12C08J2427/06C08J2467/02C08J2469/00C08K2201/003C08L23/12C08L2201/10C08L2203/16G09F3/02C08L23/06C08L27/06C08L69/00C08L91/00C08K9/00C08K3/40C08K5/5425C08K5/09C08K5/10
Inventor 张新林许文才罗世永
Owner BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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