Synergistic short and long spacer fluorinated chain extenders for low refractive index waterborne polyurethane acrylate coatings

Key Points

• This research aims to explore the effects of synergistic fluorinated chain extenders on the properties of waterborne polyurethane acrylate coatings.
• Incorporated short spacer F-DEOA and long spacer F-PETMP into the coatings.
• Evaluated the refractive index and hydrophobicity of the modified formulations.
• Conducted UV-curing processes to assess performance.
• Achieved low refractive index and high hydrophobicity with fluorinated side chains.
• Demonstrated constraint release of the fluorinated chains through synergistic incorporation.
• Showed significant improvements in coating properties compared to traditional formulations.