Laser embossed holography recording material and preparation method thereof

A laser holographic and recording material technology, applied in the field of laser holographic information recording materials, can solve problems such as plate sticking, drop points, and defects, and achieve the effects of reducing surface energy, improving compatibility, and good wear resistance

Active Publication Date: 2017-05-31
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the object of the present invention is to provide a molded laser holographic recording material and a preparation method thereof, wherein the key material microscopic composition and structure (especially surface treatment of polytetrafluoroethylene, etc.) ) is improved, compared with the prior art, it can effectively solve the problem that the resin used in the existing molded laser holographic information recording layer is prone to defects such as sticking plate, dropping points or even defects during the molding process. The present invention adopts irradiation graft modification The PTFE micropowder is composited with the imaging resin, and at the same time, the polymer is grafted on the surface of the PTFE micropowder by electron beam irradiation and the grafting rate is controlled, which can improve the compatibility of the PTFE micropowder and the imaging resin, and obtain A molded laser holographic recording material with good internal uniformity and high stability; and, the present invention controls the composition of the imaging resin and the irradiation grafted modified polytetrafluoroethylene micropowder in the composite material for the molded laser holographic recording. Ratio, so that the molded laser holographic recording material has good wear resistance and anti-sticking performance, which can greatly improve the efficiency of molding processing

Method used

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  • Laser embossed holography recording material and preparation method thereof
  • Laser embossed holography recording material and preparation method thereof
  • Laser embossed holography recording material and preparation method thereof

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preparation example Construction

[0043] Correspondingly, the preparation method of the embossed laser holographic recording material in the present invention specifically includes the following steps:

[0044] ① Disperse polytetrafluoroethylene micropowder in the monomer solution, use electron beam irradiation to initiate graft polymerization of monomer on the surface of polytetrafluoroethylene micropowder, after the irradiation is completed, filter, wash and dry to obtain grafted modified polytetrafluoroethylene Vinyl fluoride powder; the mass fraction of the monomer solution is 4wt.% to 40wt.%, and the mass ratio of polytetrafluoroethylene micropowder to monomer is 1 / 0.5 to 1 / 3; the dose rate of the electron beam irradiation 4kGy / pass~30kGy / pass (since the sample can pass through the conveyor belt to the electron beam, the dose rate unit kGy / pass means the dose per single pass), and the irradiation dose is 20kGy~90kGy;

[0045] ②Use electron beams to irradiate polytetrafluoroethylene micropowder to obtain p...

Embodiment 1

[0055] The embossed laser holographic recording material in this embodiment includes acrylate resin and polytetrafluoroethylene micropowder modified by irradiation grafted polyglycidyl methacrylate, wherein the particle size of the radiation grafted modified polytetrafluoroethylene micropowder is The diameter is 0.2 microns, and the mass ratio to the acrylate resin is 1 / 20.

[0056] This molded laser holographic recording material is prepared according to the following steps:

[0057] ① Disperse polytetrafluoroethylene micropowder in 4wt.% glycidyl methacrylate aqueous solution, and irradiate the mixed solution with electron beams. After completion, suction filter, wash and dry to obtain grafted modified polytetrafluoroethylene micropowder. The mass ratio of polytetrafluoroethylene micropowder to glycidyl methacrylate is 1 / 0.5, the irradiation dose rate is 4kGy / pass, and the irradiation dose is 20kGy.

[0058] ② Disperse the graft-modified polytetrafluoroethylene micropowder ...

Embodiment 2

[0062] The molded laser holographic recording material in this embodiment includes acrylate resin and radiation-grafted polyacrylic acid-modified polytetrafluoroethylene micropowder, wherein the particle size of the radiation-grafted modified polytetrafluoroethylene micropowder is 0.2 microns, which is the same as The mass ratio of the acrylate resin was 3 / 100.

[0063] This molded laser holographic recording material is prepared according to the following steps:

[0064] ① Disperse polytetrafluoroethylene micropowder in 12wt.% acrylic acid aqueous solution, and irradiate the mixed solution with electron beams. After completion, filter, wash and dry to obtain grafted modified polytetrafluoroethylene micropowder. The mass ratio of polytetrafluoroethylene micropowder to acrylic acid is 1 / 1, the irradiation dose rate is 20kGy / pass, and the irradiation dose is 60kGy.

[0065] ② Disperse the graft-modified polytetrafluoroethylene micropowder obtained in step ① in butyl acetate to ...

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Abstract

The invention discloses a laser embossed holography recording material and a preparation method thereof. The laser embossed holography recording material comprises imaging resin, and irradiation grafted modified polytetrafluoroethylene micro-powder used for compounding and modifying the imaging resin; and a mass ratio of the irradiation grafted modified polytetrafluoroethylene micro-powder to the imaging resin is 1/20 to 1/200. The laser embossed holography recording material with good internal uniformity and high stability is prepared through improving the microstructure composition and the structure of a key material and effectively solving the problems of easiness in sticking, point dropping and defects of resin used by present laser embossed holography recording layers in the molding process in the prior art.

Description

technical field [0001] The invention belongs to the field of laser holographic information recording materials, and more specifically relates to a molded laser holographic recording material and a preparation method thereof. The molded laser holographic recording material is composed of imaging resin and radiation-grafted modified polytetrafluoroethylene micropowder is a composite material especially suitable for embossed laser holographic recording. Background technique [0002] Counterfeit and shoddy products not only damage the interests of merchants and consumers, affect the social and economic order, but also bring huge losses to the country's tax revenue. Anti-counterfeiting technology has become one of the effective means to combat counterfeit and shoddy products. Among the existing anti-counterfeiting technologies, laser holographic embossing technology is widely used because of its advantages such as not easy to copy, various identification methods, and non-reusable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/04C08L51/00C08L75/04C08F259/08C08F220/32C08F220/06C08F220/58C08F220/28C08F220/18C08F220/54C08F220/14C08F220/56C08F2/54
CPCC08F2/54C08F259/08C08L33/04C08L75/04C08L51/003C08F220/281C08F220/1804C08F220/18C08F220/1802C08F220/325C08F220/58
Inventor 解孝林王晖周兴平郑成赋孙绍发李月生牟靖文廖永贵
Owner HUAZHONG UNIV OF SCI & TECH
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