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A kind of infrared reflective device and its preparation method

An infrared reflection and device technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of high cost, difficult industrial production and application, and cumbersome operation.

Active Publication Date: 2021-12-07
SOUTH CHINA NORMAL UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the infrared reflective devices mentioned above are based on thermotropic liquid crystals. If lyotropic liquid crystals are used for the preparation of infrared reflective devices, one of the more difficult technical problems is how to orient the lyotropic liquid crystals. Although the current research has developed such Magnetic field orientation, special lithography technology orientation, special orientation layer, etc., but these processes require special materials or use some specific cutting-edge science and technology, the operation is cumbersome, the cost is high, and it is difficult to put into industrial production application

Method used

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  • A kind of infrared reflective device and its preparation method
  • A kind of infrared reflective device and its preparation method
  • A kind of infrared reflective device and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Under a yellow light environment, 27.07 parts by mass of potassium laurate, 6.17 parts by mass of n-decyl alcohol, and 66.76 parts by mass of heavy water were weighed and mixed uniformly to form a lyotropic liquid crystal for use.

[0032] Weigh 80 parts by mass of negative mixed liquid crystal HNG30400-200 as liquid crystal one, 15 parts by mass of crosslinkable liquid crystal monomer HCM009, 4 parts by mass of left-handed chiral dopant S1011, 1 part by mass of photoinitiator Irgacure- 651 is placed in a brown bottle, and the brown bottle is heated to 70°C while stirring evenly at a speed of 40r / s to transform the liquid crystal material mixture into an isotropic liquid crystal mixture and reduce its viscosity. Then inject the liquid crystal material mixture into the liquid crystal cell at this temperature, cool down to room temperature naturally, and cure by ultraviolet light for 5 minutes.

[0033] Then it was soaked in cyclohexane organic solvent for 48 hours, and t...

Embodiment 2

[0045] An infrared reflective device, the difference from Example 1 is that the liquid crystal monomer uses HCM008, the photoinitiator uses Irgacure-2959, the liquid crystal one uses negative liquid crystal HTW138200-100, and the chiral dopant uses R1011.

Embodiment 3

[0047] An infrared reflective device, the difference from Example 1 is that the liquid crystal monomer uses HCM009, the photoinitiator uses Irgacure-369, the liquid crystal one uses negative liquid crystal MLC-2079, and the chiral dopant uses S811.

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Abstract

The invention discloses a brand new infrared reflection device and a preparation method thereof. The infrared reflective device is filled with a liquid crystal mixture, and the liquid crystal mixture includes a polymer network with a helical structure and a lyotropic liquid crystal with a rod structure. The helical polymer network can induce the embedded lyotropic liquid crystal to form a helical structure corresponding to the helix of the polymer network, which can reflect back the circularly polarized light with the same handedness, and make the circularly polarized light with the opposite handedness light through. By adjusting the helical structure of the polymer network, light with different bandwidths can be transmitted or reflected, thereby achieving the purpose of adjusting infrared reflection.

Description

technical field [0001] The invention relates to an infrared reflective device, in particular to an infrared reflective device and a preparation method thereof. Background technique [0002] In order to transmit or reflect a certain part of the infrared rays in sunlight, people generally consider coating the glass. This kind of coated glass is coated with one or more layers of metal, alloy or metal compound thin films on the original glass surface, which can change the optical properties of the glass and achieve the purpose of reflecting or transmitting light of a certain wavelength. However, after the coated glass is molded, its optical properties cannot change with the environment. This shortcoming makes coated glass unable to meet people's increasingly diverse needs. [0003] After conducting various experiments, the researchers found that the infrared reflective sheet has transmission and reflection properties under the action of voltage. It can transmit infrared light ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13G02F1/1333G02F1/1337G02F1/137
CPCG02F1/1313G02F1/1333G02F1/133703G02F1/137G02F1/13712
Inventor 胡小文聂秋梅杨文敏张新敏周国富
Owner SOUTH CHINA NORMAL UNIVERSITY
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