Polymer structure and applications thereof

A polymer structure, which comprises a substrate and a light shielding layer, wherein the substrate has a surface at least partially covered by the light shielding layer, wherein the substrate comprises a first polymer, the light shielding layer has a thickness of 5 μm to 200 μm and comprises a second polymer, wherein the first polymer is a thermoplastic aromatic polyurethane and the second polymer is a thermoplastic aromatic polyurethane, wherein the second polymer comprises:

• a structural unit derived from a first ultraviolet absorber;
• triethylene glycol bis(3-tert-butyl-4-hydroxy-5-methylphenyl) propionate;
• benzoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, 4-(1,1-dimethylethyl)-2-[5-(1,1-dimethylethyl)-2,3-dihydro-2-oxo-3-benzofuranyl]phenyl ester;
• 3,9-bis(2,4-bis(1,1-dimethylethyl) phenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro(5.5) undecane;
• and 2,4-bis [N-butyl-N-(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-4-yl)amino]-6-(2-hydroxyethylamine)-1,3,5-triazine, and wherein the first ultraviolet absorber is represented by the following chemical formula (I):
• in chemical formula (I), R1 is H or Cl,
• wherein based on the total weight of the second polymer, the content of the first ultraviolet absorber ranges from 10 wt % to 20 wt %, and
• wherein the polymer structure has a visible light transmittance of 65% or more.