Anti-fouling polyurethane thin film with high elasticity and high transparency, preparation method and use thereof

An anti-fouling polyurethane film, characterized in that it has raw materials comprising the following active ingredients by mass fractions:

• a hard segment monomer
• 30% to 40%;
• a soft segment monomer
• 40% to 50%;
• a hydrophilic monomer
• 3% to 6%;
• a crosslinking monomer
• 0% to 3%;
• a small molecular chain extender
• 0% to 5%;
• and
• a compound with low surface energy
• 10% to 15%,
• wherein the mass fraction refers to the mass fraction of each active ingredient in the total active ingredients;
• the first segment monomer is at least one of toluene-2,4-diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, dicyclohexylmethane diisocyanate, 1,4-cyclohexane diisocyanate or isophorone diisocyanate;
• the second segment monomer is at least one of polyester glycol or polyether glycol;
• the hydrophilic monomer is at least one of sodium 1,4-butanediol-2-sulfonate, sodium 1,2-propanediol-3-sulfonate, sodium ethylenediaminoethanesulfonate, 2,4-diaminobenzenesulfonic acid, dimethylolpropionic acid or dimethylolbutyric acid;
• the crosslinking monomer is at least one of glycerol, triisopropanolamine, pentaerythritol, or trimethylolpropane;
• the molecule chain extender is at least one of 1,4-butanediol, ethylene glycol, diethylene glycol, or ethylenediamine;
• and
• the surface energy compound is a monohydroxyalkyl organic fluorine.