Forming method for preparing photonic crystal workpiece with different structural colors based on nano composite

A photonic crystal and structural color technology, which is applied in the field of plastic processing and forming, can solve the problems that affect the application of photonic crystal structural color materials, small product area, poor mechanical properties, etc., and achieve excellent structural color optical properties, broaden types, and good hardness. Effect

Active Publication Date: 2019-05-28
EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the asymmetry of the micro-force, the material prepared by this method has the disadvantages of poor mechanical properties, small product area, and many st

Method used

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  • Forming method for preparing photonic crystal workpiece with different structural colors based on nano composite
  • Forming method for preparing photonic crystal workpiece with different structural colors based on nano composite
  • Forming method for preparing photonic crystal workpiece with different structural colors based on nano composite

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Embodiment 1

[0043] In this embodiment, the thermosetting cross-linked polystyrene raw material coated with thermoplastic polytetrahydrofuran is taken as an example, and the method described in the present invention is used to extrude and roll to form high-quality large-area photonic crystal structural color products with mechanical strength. The implementation steps are as follows:

[0044]1) Prepare the thermosetting nano-microsphere particle material: through styrene polymerization, the water in the emulsion polymerization system is 270g, and the temperature is 70-90°C at 100-600rpm stirring reaction for 5-10 hours. 0.0100-0.3000g is regulated to obtain microsphere particles of different nanometer scales, and 1-15g of cross-linking agent is added to obtain thermosetting polystyrene microsphere particle emulsion. After the freeze-drying is completed, the thermosetting polystyrene microsphere particle powder is obtained, and the powder has a nanoscale microsphere structure with a particle...

Embodiment 2

[0053] In this embodiment, the thermosetting cross-linked PMMA raw material coated with thermoplastic PEA is taken as an example, and the method described in the present invention is used to extrude and roll form a high-quality photonic crystal structure color product with large area and mechanical strength. The implementation steps are as follows:

[0054] 1) Prepare thermosetting nano-microsphere particle material: obtain thermosetting cross-linked PMMA nano-microsphere particle emulsion with a particle size of 100-500nm through emulsion polymerization, adjust the content of emulsifier during the polymerization process to adjust the nanoscale of microsphere particles, regulate the cross-linking The amount of the combined agent can be used to obtain nano-microspheres with different hardness. After the freeze-drying is completed, thermosetting cross-linked PMMA nano microsphere particles are obtained.

[0055] 2) Coating thermoplastic polymer materials: first dissolve thermop...

Embodiment 3

[0063] In this embodiment, the thermosetting cross-linked PMMA raw material coated with thermoplastic PTHF is taken as an example, and the method described in the present invention is used to extrude and roll form a high-quality photonic crystal structure color product with large area and mechanical strength. The implementation steps are as follows:

[0064] 1) Prepare thermosetting nano-microsphere particle material: obtain thermosetting cross-linked PMMA nano-microsphere particle emulsion with a particle size of 100-500nm through emulsion polymerization, adjust the content of emulsifier during the polymerization process to adjust the nanoscale of microsphere particles, regulate the cross-linking The amount of the combined agent can be used to obtain nano-microspheres with different hardness. After the freeze-drying is completed, thermosetting cross-linked PMMA nano microsphere particles are obtained.

[0065] 2) Coating thermoplastic polymer materials: first dissolve thermo...

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Abstract

The invention discloses a forming method for preparing a photonic crystal workpiece with different structural colors based on a nano composite. Unlike photonic crystal materials prepared by conventional methods, the forming method is characterized in that thermosetting nanoparticles uniform in particle size are coated with a thermoplastic material in a packing mode to increase the order degree ofthe arrangement of the thermosetting nanoparticles during forming by virtue of the high-temperature flow field of the thermoplastic material; thus the workpiece has bright structural colors without angle dependence, and reflection of the structural colors at different wavelengths is realized by the nanometer size of the thermosetting nanoparticles.

Description

technical field [0001] The invention belongs to the technical field of plastic processing and forming, and in particular relates to a forming method for preparing photonic crystal parts with different structural colors based on nano-composite materials. Background technique [0002] There are many photonic crystal structure colors in nature. There are gemstones of various colors in ores, and there are morpho butterfly wings, peacock feathers, and chameleon skins in biology. Photonic crystal structural color is different from conventional chemical pigments such as dyes and pigments. It is based on a series of optical effects in the periodically arranged nanostructures of visible light waves, and generates colors corresponding to the scale of nanounits. Photonic crystal structural color materials have the advantages of low pollution, bright light intensity, and never fading, and have great application potential in the fields of dyes, anti-counterfeiting, lasers, military indus...

Claims

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Application Information

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IPC IPC(8): B29C48/92B29C43/24
Inventor 王云明周华民张云黄志高李德群符岳陈丹
Owner EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH
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