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Method for preparing ultraviolet fluorescent red plastic film by taking rare earth phosphate glass as photochromic agent and application of ultraviolet fluorescent red plastic film in aspect of anti-counterfeiting

A rare earth phosphate and phosphate glass technology, applied in instruments, identification devices, seals, etc., can solve the problems of mechanical properties decline, transparency reduction, poor compatibility of polymer materials, etc., to overcome the impact on the human body and the environment. Harmful, reduce the effect of polar difference, simple preparation process

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

[0017] The oxides converted into the mass percentage of the glass formula are: P 2 o 5 50%; 2 O5%; Na 2 O25%; K 2 O15; Eu 2 o 3 4.5%; Ce 2 o 3 0.5%. 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, Eu 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 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 it in a high-pressure jet mill Finely ground to a particle size of less than 300nm white fluorescent glass powder.

[0018] The prepared fluorescent glass powder and white oil were used as coupling agent, respectively, with commonly used plastics, including polypropylene (PP), polyethylene (PE)...

Embodiment 2

[0020] The oxides converted into the mass percentage of the glass formula are: P 2 o 5 70%; 2 O5%; Na 2 O16%; Eu 2 o 3 8%; Ce 2 o 3 1%. where P 2 o 5 by NH 4 h2 PO 4 Introduce; K 2 O is introduced by potassium carbonate, Na 2 O is introduced by sodium carbonate, K 2 O is introduced by potassium carbonate, Eu 2 o 3 Introduced directly with europium trioxide, Ce 2 o 3 Introduced directly with cerium oxide. After being kept at 900°C for 10 minutes in a silicon carbide rod furnace, the glass melt is poured on a double-roll tablet press 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. glass powder.

[0021] 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), a h...

Embodiment 3

[0023] The oxides converted into the mass percentage of the glass formula are: P 2 o 5 85%;Na 2 O10%; Eu 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, Eu 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 25 minutes, pour the glass melt on a double-roll tablet press and press it into glass flakes, and then grind it to a fine particle size in a high-pressure jet mill Less than 300nm white fluorescent glass powder.

[0024] 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), poly A kind of high-pressure blending in terephthalate (PET) masterbatch. The blending formu...

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PUM

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Abstract

The invention discloses a method for preparing an ultraviolet fluorescent red plastic film by taking rare earth phosphate glass as a photochromic agent and an application of the ultraviolet fluorescent red plastic film in the aspect of anti-counterfeiting. For solving the problems of large polarity difference between an inorganic rare earth fluorescent agent and a high polymer material, fluorescent concentration quenching and fluorescent stability and the like of a doped rare earth fluorescent high polymer material, by taking phosphate glass as a matrix, taking Eu<3+> ions as a fluorescent activator and taking Ce<3+> ions as a sensitizer, through the synergistic effect of the phosphate glass matrix, the Eu<3+> and the Ce<3+> in a formula, a fluorescent concentration quenching phenomenon is overcome, thereby improving the adding amount and fluorescence efficiency of rare earth element Eu; glass fragments are prepared by pressing through using a melting method and an ice-water mixture cooling glass sheeter, and then the glass fragments are subjected to high-pressure grinding by using an air-current mill so as to prepare phosphate glass with a particle size of less than 300 nm and containing Eu<3+>, Ce<3+> and fluorescent powder; and a surface modifier is added and fluorescent powder and polymer masterbatches are subjected to melt blending, then a plastic film prepared by film blowing is white and transparent in daylight, and emits bright red light under ultraviolet-irradiation, and the plastic film has special transmission spectrum, and can be used as an anti-counterfeiting packaging film, an anti-counterfeiting label printing base material and an anti-counterfeiting safety line base material.

Description

technical field [0001] The invention relates to a preparation method of an ultraviolet fluorescent red 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 m...

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
CPCC03C12/00C08J3/226C08J2423/06C08J2423/12C08J2427/06C08J2467/02C08J2469/00C08K2201/003C08L23/12C08L2201/10C08L2203/16G09F3/02C08L23/06C08L27/06C08L69/00C08L67/02C08L91/06C08K9/00C08K3/40C08K5/5425C08K5/09C08K5/10
Inventor 许文才罗世永张新林
Owner BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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