A kind of total reflection infrared reflection device and its preparation method

Abstract

The invention discloses a total reflection infrared reflection device and a preparation method thereof. The device comprises two light-transmitting conductive substrates arranged oppositely. The two light-transmitting conductive substrates are packaged to form a sealed cavity. In the sealed cavity, the two transparent The opposite surfaces of the photoconductive substrate are respectively coated with a liquid crystal layer 1 capable of reflecting left-handed polarized light and a liquid crystal layer 2 capable of reflecting right-handed polarized light. The liquid crystal layer 1 contains a polymer network and a cholesteric liquid crystal with a left-handed helical structure. The liquid crystal layer 2 contains a polymer network and a cholesteric liquid crystal with a right-handed helical structure. The cholesteric liquid crystal with a left-handed helical structure can reflect left-handed polarized light, and the cholesteric liquid crystal with a right-handed helical structure can reflect right-handed polarization. light, so the device can fully reflect infrared in a certain band, and the polymer network can capture the impurity cations in the liquid crystal layer 1 or the liquid crystal layer 2. Under the electric field, the polymer network drives the cholesteric liquid crystal to move, realizing Reflection band adjustment.

Description

technical field [0001] The invention relates to the field of architectural furniture and living, in particular to an electrical response-based total reflection infrared reflection device and a preparation method thereof. Background technique [0002] The internal environment of the building is closely related to human health, especially the internal temperature of the building has a great impact on people, so people use air conditioning, heating and other equipment to adjust the internal temperature of the building to a suitable range. But the use of these devices increases carbon dioxide emissions and can have a very negative impact on the environment. [0003] As a result, building shell technology began to play a major role, and a large number of innovative methods such as inorganic coatings were applied. However, the infrared rays in sunlight can enter the room through the window and affect the indoor ambient temperature. [0004] So people began to pay attention to th...

AI Technical Summary

Problems solved by technology

[0005] Infrared rays in sunlight are divided into left-handed polarized light and right-handed polarized light. The helical structure of cholesteric liquid crystals is also divided into left-handed and right-handed. The left-handed cholesteric liquid crystal with helical structure can only reflect left-handed polarized light, and the helical structure is right-handed. The cholesteric liquid crystal can only reflect right-handed polarized light, so the infrared reflective sheet containing only one kind of helical structure cholesteric liquid crystal can only reflect one kind of polarized light, and cannot achieve left-handed polarized light and right-handed polarized light. total reflection

Limits the application of infrared reflectors

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