A preparation method of ultraviolet fluorescent green plastic film using rare earth phosphate glass as photochromic agent and its application in anti-counterfeiting

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: 2016-08-24
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 oxide of glass formula converted to mass percentage is: P 2 O 5 60%; Li 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 was introduced by potassium carbonate, Tb 2 O 3 Directly introduced with terbium trioxide, Ce 2 O 3 Directly introduced with cerium oxide. The glass batch was added into an alumina crucible, and after being kept at 900°C for 20 minutes in a silicon carbon rod furnace, the glass melt was cast on a pair of roller tablet machines cooled with an ice-water mixture and pressed into glass flakes. It is finely ground to a white fluorescent glass powder with a particle size of less than 300nm.

[0017] The prepared fluorescent glass powder and white oil are selected as coupling agent, and are respectively combined with commonly used plastics, including polypropylene (PP), polyethylene (PE), polyvi...

Embodiment 2

[0019] The oxide of glass formula converted to mass percentage is: 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; K2 O was introduced by potassium carbonate, Na 2 O is introduced by sodium carbonate, K 2 O was introduced by potassium carbonate, Tb 2 O 3 Directly introduced with terbium trioxide, Ce 2 O 3 Directly introduced with cerium oxide. After holding at 900°C for 20 minutes in a silicon carbon rod furnace, the glass melt was cast on a counter-roll tablet machine cooled with an ice-water mixture and pressed into glass flakes, and then ground in a high-pressure jet mill to a particle size of less than 300 nm white Fluorescent glass powder.

[0020] The prepared fluorescent glass powder and silane coupling agent KH570 were selected as coupling agent, respectively mixed with common plastic masterbatches, including polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polycarbonate ( PC), a kind of hi...

Embodiment 3

[0022] The oxide of glass formula converted to mass percentage is: 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 Directly introduced with europium trioxide, Ce 2 O 3 Directly introduced with cerium oxide. The glass batch was added into an alumina crucible, and after being kept at 900°C for 30 minutes in a silicon carbon rod furnace, the glass melt was cast on a pair of rollers cooled by an ice-water mixture and pressed into glass flakes. Grind the white fluorescent glass powder until the particle size is less than 300nm.

[0023] The prepared fluorescent glass powder and stearic acid are used as surface modifiers, which are respectively mixed with common plastics, including polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polycarbonate (PC), polyethylene A high-pressure blending in terephthalate (PET) masterbatch, the blending formula ...

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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 light colorant and its application in anti-counterfeiting, belonging to the field of rare earth polymer materials and the field of anti-counterfeiting. Background technique [0002] There are basically two methods for adding rare earth elements into polymer materials: (1) Rare earth compounds are uniformly dispersed into monomers or polymers as dopants to form rare earth polymers in the form of doping, which is called doping Heterotype rare earth polymer. (2) Synthesize rare earth complex monomers that can undergo polymerization 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 ions exist in the polymer materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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