| abstract |
The invention discloses a transparent polyurethane optical material and a preparation method thereof, which is prepared by taking isocyanate and polymer polyol as reactants, and adding additives and other substances to react at the same time; 1,4-bis(isocyanate Methoxy)cyclohexane, isophorone diisocyanate and p-phenylene diisocyanate, polytetrahydrofuran diol and polycarbonate polyol were selected as polymer polyols, and 2,3-bis(2 ‑Mercaptoethylthio)‑1‑propanethiol and 5‑ethylpropylthio‑1,3,4‑thiadiazole‑2‑thiol; accelerators are polymethylhydrogensiloxane and anilines The reaction is made, and 4-(10H-phenothiazin-10-yl) aniline and 4-(10H-phenothiazin-10-yl) aniline have been selected on the anilines; the polyurethane material finally made has a larger Tensile strength and hardness, good mechanical properties, colorless and transparent, high refractive index, good optical properties, especially suitable for use as optical materials. |