Preparation method of light modulation film based on liquid crystal/polymer composite material
A technology of liquid crystal materials and composite materials, applied in the field of preparation of dimming films based on liquid crystal/polymer composite materials, can solve the problems of reducing the brightness and contrast of display devices, reduce the anchoring effect, increase the size, and improve the comprehensive The effect of electro-optical properties
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[0029] Example 1
[0030] The selected photopolymerizable monomers are lauryl methacrylate, trimethylolpropane triacrylate and pentaerythritol tetrakis (3-mercaptopropionic acid). The polymerizable monomer and the nematic liquid crystal SLC1717 are mixed at a mass ratio of 35.0:65.0. The mass ratio among lauryl methacrylate, trimethylolpropane triacrylate and pentaerythritol tetrakis(3-mercaptopropionic acid) is 18.0:9.0:8.0. The mass of the photoinitiator benzoin dimethyl ether (651) is 3.0% of the total mass of the photopolymerizable monomer. After stirring, the mixture is in a clear state at room temperature. The mixture is poured into a liquid crystal cell with a cell thickness of 20μm by the principle of siphon, and then the light intensity is 10mw / cm at room temperature. 2 , Irradiated with ultraviolet light with a wavelength of 365 nm for 5 minutes to form the polymer dispersed liquid crystal film of Example 1.
[0031] The electro-optical performance curve of the PDLC fil...
Example Embodiment
[0033] Example 2
[0034] The selected photopolymerizable monomers are lauryl methacrylate, trimethylolpropane triacrylate and pentaerythritol tetrakis (3-mercaptopropionic acid). The polymerizable monomer and the nematic liquid crystal SLC1717 are mixed at a mass ratio of 35.0:65.0. The mass ratio among lauryl methacrylate, trimethylolpropane triacrylate and tetrakis (3-mercaptopropionic acid) pentaerythritol ester is 21.0:12.0:2.0. The mass of the photoinitiator benzoin dimethyl ether (651) is 3.0% of the total mass of the photopolymerizable monomer. After stirring, the mixture is in a clear state at room temperature. The mixture is poured into a liquid crystal cell with a cell thickness of 20μm by the principle of siphon, and then the light intensity is 10mw / cm at room temperature. 2 , Irradiated with ultraviolet light with a wavelength of 365 nm for 5 minutes to form the polymer dispersed liquid crystal film of Example 2.
[0035] The electro-optical performance curve of the ...
Example Embodiment
[0037] Example 3
[0038] The selected photopolymerizable monomers are lauryl methacrylate, trimethylolpropane triacrylate and pentaerythritol tetrakis (3-mercaptopropionic acid). The polymerizable monomer and the nematic liquid crystal SLC1717 are mixed at a mass ratio of 45.0:55.0. The mass ratio among lauryl methacrylate, trimethylolpropane triacrylate and tetrakis (3-mercaptopropionic acid) pentaerythritol ester is 18.0:9.0:8.0. The mass of the photoinitiator benzoin dimethyl ether (651) is 3.0% of the total mass of the photopolymerizable monomer. After stirring uniformly, the mixture is in a clear state at room temperature. The mixture is poured into a liquid crystal cell with a cell thickness of 20μm by the principle of siphon, and then the light intensity is 10mw / cm at room temperature. 2 , Irradiated with ultraviolet light with a wavelength of 365 nm for 5 minutes to form the polymer dispersed liquid crystal film of Example 3.
[0039] The electro-optical performance curv...
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