Preparation and properties of super hydrophilic material based on ethylene-vinyl acetate copolymer/nitrile rubber thermoplastic vulcanizate

Thermoplastic vulcanizate based on ethylene-vinyl acetate copolymer/nitrile rubber (EVA/NBR TPV) was prepared by dynamic vulca-nization method, the effect of the mass ratio of rubber to plastic on the superhydrophilic behavior of EVA/NBR TPV surface was researched, the microstructure and super hydrophilicity of EVA/NBR TPV super hydrophilic surface were studied, and the hydrophilic mechanism was preliminarily discussed. The results showed that the surface hydrophilicity of EVA/NBR TPV prepared by template method with water-resistant sandpaper as template was better when the mass ratio of rubber to plastic of EVA/NBR TPV was 20/80. The surface hydrophilicity of EVA/NBR TPV film with the mass ratio of rubber to plastic of 20/80 was the best when the sandpaper NO 1000 was used as the template at 165 °C after being preheated for 10 min, being hot pressed for 3 min and being cold-pressed for 5 min.