| abstract |
Disclosed are a high elasticity and high transparency anti-fouling polyurethane film, a preparation method therefor and the use thereof. The raw materials of the polyurethane film include the following effective components in mass percentages: 30-40% of a hard segment monomer, 40-50% of a soft segment monomer, 3-6% of a hydrophilic monomer, 0-3% of a crosslinking monomer, 0-5% of a small molecule chain extender, and 10-15% of a low surface energy compound. A chemically and physically dual-crosslinked anti-fouling polyurethane is synthesized by means of a polycondensation reaction. The film exhibits a good low adhesion anti-fouling property, and liquids with different surface tensions, such as water, diiodomethane and hexadecane, do not adhere to the film at all, and slide off the film without leaving a trace. When the film is in a stretched state (elongation rate ≤1800%), the liquids can still slide off the film without leaving a trace, indicating that the film can achieve the co-existence of both a low adhesion and stretchability. |