![]() Bhowmick, Influence of number of functional groups of hyperbranched polyol on cure kinetics and physical properties of polyurethanes. ![]() Ueda, Recent progress in high refractive index polymers. Preparation of highly refractive polythiourethane-ZnS composite film by “click” chemical reaction It was worth noting that the Abbe number was almost greater than 30, which was in the category of low dispersion. ![]() The RI of the system without the addition of particles was less than 1.5, the system with 40% was greater than 1.6. The addition of ZnS had a significant improvement on the refractive index. ZnS NPs were well dispersed in the resin system, and the transmittance of the film decreased with the increase of ZnS content, but it did not float much and still has 80% transmittance at 40%. ![]() In this study, the soft segment part of conventional polyurethane was replaced by ethylenedithiol, and a series of nanocomposite films containing Mercaptoethanol (ME) capped ZnS NPs were prepared by UV curing after the synthesis of the bifunctional linear prepolymer with hydroxyethyl acrylate as capping agent and trifunctional prepolymer with trimethylolpropane triacrylate as sulfhydrylate capping. In recent years, high refractive index polythiourethane materials have attracted increasing attention. ![]()
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