UV resin composition, PDLC light-dimming film and preparation method of PDLC light-dimming film
A technology of resin composition and dimming film, applied in optics, nonlinear optics, coating, etc., can solve the problem of high driving voltage of PDLC, achieve the effect of reducing driving voltage and ensuring safety
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Embodiment 1
[0041] This embodiment provides a UV resin composition and a preparation method thereof.
[0042] The UV resin composition of this embodiment is prepared by mixing the components in parts by weight shown in Table 1 under normal temperature and normal pressure:
[0043] Table 1
[0044]
[0045]
[0046] The preparation method of the polyurethane acrylate prepolymer used in this embodiment is as follows:
[0047] Mix 0.5 moles of isophorone diisocyanate, 1.5 moles of hexamethylene diisocyanate, 1 mole of polyether diol and 0.001 mole of dibutyltin dilaurate, mix and stir, heat up to 60°C and react for 5 hours, monitor -NCO content, when- When the NCO content is 50%, add 2 moles of hydroxyethyl acrylate and 0.01 moles of 2,6-di-tert-butyl-p-cresol to the reaction system by moles, and continue the reaction until the -NCO content is less than 0.5% to obtain the 50℃ condition Polyurethane acrylate prepolymer with a lower viscosity of 4500-5000cP.
Embodiment 2
[0049] This embodiment provides a UV resin composition and a preparation method thereof.
[0050] The UV resin composition of this embodiment is prepared by mixing the components by weight shown in Table 2 under normal temperature and normal pressure:
[0051] Table 2
[0052]
[0053] The preparation method of the polyurethane acrylate prepolymer used in this embodiment is as follows:
[0054] Mix 1 mol of isophorone diisocyanate, 1 mol of hexamethylene diisocyanate, 1 mol of polyether glycol and 0.001 mol of dibutyltin dilaurate with stirring. The temperature is raised to 60°C and reacted for 5 hours, and the -NCO content is monitored. When the NCO content is 50%, add 0.5 moles of hydroxyethyl acrylate, 1.5 moles of hydroxypropyl acrylate and 0.01 moles of 2,6-di-tert-butyl-p-cresol to the reaction system by moles, and continue the reaction until the -NCO content is less than 0.5% to obtain a urethane acrylate prepolymer with a viscosity of 4500-5000 cP at 50°C.
Embodiment 3
[0056] This embodiment provides a UV resin composition and a preparation method thereof.
[0057] The UV resin composition of this embodiment is prepared by mixing the components by weight shown in Table 3 under normal temperature and pressure:
[0058] table 3
[0059]
[0060] The preparation method of the polyurethane acrylate prepolymer used in this embodiment is as follows:
[0061] Mix 1 mol of isophorone diisocyanate, 1 mol of hexamethylene diisocyanate, 1 mol of polyether glycol and 0.001 mol of dibutyltin dilaurate with stirring. The temperature is raised to 60°C and reacted for 5 hours, and the -NCO content is monitored. When the NCO content is 50%, add 2 moles of hydroxyethyl acrylate and 0.01 moles of 2,6-di-tert-butyl-p-cresol to the reaction system by moles, and continue the reaction until the -NCO content is less than 0.5% to obtain the 50℃ condition Polyurethane acrylate prepolymer with a lower viscosity of 4500-5000cP.
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Abstract
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