Thermal polymerization process of PQ/PMMA photopolymer material, PQ/PMMA photopolymer material and holographic optical disc thereof

A technology of photopolymerization and thermal polymerization, applied in the direction of record carrier materials, optical record carriers, etc., can solve problems such as internal structure instability

Inactive Publication Date: 2021-05-18
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, many researchers have increased the solubility of the photoinitiator PQ in the MMA monomer by changing the photoinitiator or doping other components to improve the optical properties of the material, but adding a variety of components can easily induce structural instability

Method used

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  • Thermal polymerization process of PQ/PMMA photopolymer material, PQ/PMMA photopolymer material and holographic optical disc thereof
  • Thermal polymerization process of PQ/PMMA photopolymer material, PQ/PMMA photopolymer material and holographic optical disc thereof
  • Thermal polymerization process of PQ/PMMA photopolymer material, PQ/PMMA photopolymer material and holographic optical disc thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] PQ / PMMA photopolymer material thermal polymerization process, including the following steps:

[0047]The raw material methyl methacrylate (MMA), azobisisobutyronitrile (AIBN), and phenanthrenequinone (PQ) that will be made into PQ / PMMA materials are weighed and proportioned according to a certain mass ratio, wherein MMA: 100wt%, AIBN: 0.7~1wt%, PQ: 0.7~1wt%, promptly take the mass percentage of MMA as 1 part, then the mass percentage of AIBN is 0.007~0.01 part, and the mass percentage of PQ is 0.007~0.01 part;

[0048] Put the prepared ingredients into a glass bottle and vibrate in an ultrasonic cleaner for 15-30 minutes to mix them evenly;

[0049] Put the mixed solution into a constant temperature water bath with magnetic stirring at 45-75°C for pre-polymerization and stirring. The stirring time is 30-105 minutes. At this time, the speed of the stirrer is 10-20r / s. Exhaust the nitrogen generated during the thermal decomposition of AIBN and the heat generated by the f...

Embodiment 2

[0054] PQ / PMMA photopolymer material, the PQ / PMMA photopolymer material is made through the PQ / PMMA photopolymer material thermal polymerization process described in Example 1.

[0055] Further, the raw materials of the PQ / PMMA photopolymer material include: MMA, AIBN and PQ.

[0056] Further, the raw materials of the PQ / PMMA photopolymer material include: when MMA, AIBN and PQ are weighed and proportioned according to a preset mass ratio, the preset mass ratio is set to MMA:100wt%, AIBN: 0.7~1wt%, PQ: 0.7~1wt%.

Embodiment 3

[0058] A holographic disc, which is made of the PQ / PMMA photopolymer material described in Embodiment 2.

[0059] It should be noted that, the weight ratio of the raw materials of the PQ / PMMA photopolymer material can preferably be MMA: 100wt%, AIBN: 1wt%, PQ: 1wt%. The weight ratio of above-mentioned each component raw material is that the weight of MMA is 1, promptly 100wt%, other raw material components are relative to the weight percentage of MMA. Namely MMA: 100wt%, AIBN: 1wt%, PQ: 1wt%. For example, the weight ratio of each component raw material MMA:AIBN:PQ is 100:1:1.

[0060] like figure 1 As shown, as the stirring time increases, the diffraction efficiency of the material will first increase and then decrease. When the stirring time is 75min, the maximum diffraction efficiency of the material is 49.3%. During this process, the stirring temperature and the baking temperature are set to be 60°C, the baking time is 20h; during the diffraction efficiency test, the inc...

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Abstract

The invention discloses a thermal polymerization process of a PQ / PMMA photopolymer material, the PQ / PMMA photopolymer material and a holographic optical disc thereof. The thermal polymerization process comprises the following steps: weighing and proportioning raw materials including MMA, AIBN and PQ according to a preset mass ratio, and oscillating and uniformly mixing the proportioned mixture to obtain a mixed solution of the raw materials; carrying out prepolymerization stirring on the uniformly mixed solution to obtain a viscous substance; and pouring the viscous substance into a mold, baking the viscous substance to change the viscous substance into a solidified PQ / PMMA photopolymer material, and then removing the mold. From the perspective of a material preparation thermal polymerization process, the optical properties, such as diffraction efficiency and photosensitive sensitivity, of the material are further improved, so that the material can be better applied to optical holographic storage.

Description

technical field [0001] The invention belongs to the technical field of holographic storage materials, and in particular relates to a PQ / PMMA photopolymer material thermal polymerization process, a PQ / PMMA photopolymer material and a holographic disc thereof. Background technique [0002] The advent of the era of information-based big data has led to an explosive growth in the amount of information. Due to the imperfection of technology, the storage capacity of optical disk and magnetic disk technology is close to the limit, which is difficult to meet the storage needs of large amounts of data in today's information age. In recent years, with the rapid development of optical holographic storage technology and holographic optical devices, optical holographic storage has broken through the two-dimensional surface storage mode of traditional optical disc and magnetic disk storage, and adopted the three-dimensional volume storage mode, which has increased the storage density by on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/14C08F2/44C08K5/08G11B7/245
CPCC08F120/14C08F2/44C08K5/08G11B7/245
Inventor 谭小地陈茜吴天敏
Owner FUJIAN NORMAL UNIV
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