A kind of wide temperature dimming film and preparation method thereof
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A technology of light film and temperature adjustment, which is applied in the field of light control film, can solve the problems of high temperature of 80-90 ℃, can not be used, etc., and achieve the effect of long service life, strong shielding and good optical performance
Active Publication Date: 2019-09-10
ZHUHAI SINGYES NEW MATERIALS TECH CO LTD
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However, the current market's dimming film products only focus on the single performance research of low voltage and high transmittance, and their working temperature is only -20 to 70°C, and the low temperature of -20°C and high temperature of 70°C are critical temperatures, which cannot last for a long time. It is used in low temperature or high temperature environment. However, in many countries around the world, the surface temperature is as low as -30°C in winter, and the surface temperature in summer can reach 60-70°C. If it is used in a car, the temperature inside the car can be as high as 80-90°C. ℃
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Embodiment 1
[0045] Step a, under light-shielding or yellow light environment, add 7% hydroxyethyl methacrylate, 6% methacrylate, 7% polyalkylated bornyl acrylate, 23% polyolefin acrylate, acrylic acrylate oligomer 52%, diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide 3%, 1-hydroxycyclohexyl phenyl ketone 2%, mix in proportion, stir well after mixing, and get wide temperature LCD UV glue A;
[0046] Step b, mix the liquid crystal with a clearing point of 108°C and a freezing point <-30°C with the wide-temperature liquid crystal UV glue A in a ratio of 6:4, set the stirring temperature to 50°C, and stir well to obtain a mixture B; 3‰ of the total weight of the 15μm spacer, fully stirred and evenly degassed to obtain a wide-temperature polymer-dispersed liquid crystal mixture, waiting for coating construction;
[0047] In step c, drop the wide-temperature polymer-dispersed liquid crystal mixture into two transparent nano-silver conductive films, set the rolling temperature to 50°C, and rol...
Embodiment 2
[0051] Step a, under light-shielding or yellow light environment, mix 60% acrylate oligomer, 12% isobornyl acrylate, 8% hydroxyalkyl methacrylate, 8% β-hydroxyethyl methacrylate, silane Coupling agent 9%, 2,4,6-(trimethylbenzoyl) diphenylphosphine oxide 2%, 2-hydroxy-2-methyl-1-phenyl-1-propanone 1%, proportional Mix, and stir well after mixing to obtain wide temperature liquid crystal UV glue B;
[0052] Step b, after mixing the liquid crystal with a clearing point of 97°C and a freezing point of <-40°C with the wide-temperature liquid crystal UV glue B at a ratio of 5.5:4.5, set the stirring temperature to 30°C, and stir well to obtain a mixture B; 5‰ of the total weight of the 12μm spacer, fully stirred and evenly degassed to obtain a wide-temperature polymer-dispersed liquid crystal mixture, waiting for coating construction;
[0053] Step c, drop the wide-temperature polymer-dispersed liquid crystal mixture into two transparent ITO conductive films, set the rolling temper...
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Abstract
The invention relates to a wide temperature polymer dispersed liquid crystal which comprises a wide temperature polymer dispersed liquid crystal layer. Transparent conductive film layers are arrangedon the upper surface and the lower surface of the wide temperature polymer dispersed liquid crystal layer, and a sandwich structure is formed; the wide temperature polymer dispersed liquid crystal layer is made from wide temperature liquid crystals, wide temperature liquid crystal UV glue and introns. The clearing point of the wide temperature liquid crystals ranges from 95 DEG C to 119 DEG C, thefreezing point is lower than -30 DEG C or lower than -40 DEG C; the wide temperature liquid crystals are of a multiphenyls structure. The invention further provides a preparation method of the wide temperature polymer dispersed liquid crystal and the wide temperature liquid crystal UV glue applied to the same. The developed wide temperature polymer dispersed liquid crystal not only can keep normal on-state transparent under the low-temperature environment at -30--40 DEG C, but also has switch response under the high-temperature hostile environment at 80-100 DEG C, the excellent high and low temperature resistant property is achieved, the product can be selected for use according to different areas and special environments, and the polymer dispersed liquid crystal product application market is effectively expanded.
Description
technical field [0001] The invention relates to the technical field of dimming films, in particular to a wide-temperature dimming film and a preparation method thereof, and a wide-temperature liquid crystal UV glue applied to the wide-temperature dimming film. Background technique [0002] Intelligent liquid crystal dimming film is a new type of multifunctional photoelectric film, also known as electronically controlled intelligent dimming film (Electronically Switchable films), commonly known as dimming film. Its main principle is to control the rotation of liquid crystal molecules through an external electric field, so as to quickly realize two states of colorless and transparent (state-on) and atomized opaque (state-off). Switchable film products can be widely used in high-end hotels, museums, banks, conference offices, commercial windows, car windows and other fields, with excellent features such as intelligent control, environmental coordination, privacy protection and ...
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