Poster
Abstract
Research summary supplied by the authors
Acrylic resin is commonly used in leather finishing process, but it has some problems such as poor mechanical properties. Cellulose nanofibers are a kind of biomass material with excellent mechanical properties and are often used as reinforcement materials. In this paper, high strength acrylic resin coating agent was prepared by cellulose nanofibers and acrylic resin. The micro morphology and properties of acrylic resin before and after modification were characterized by scanning electron microscope, tensile testing machine, rotary viscometer, etc. The use performance of finished leather coated with acry lic resin was evaluated by fabric moisture permeability tester, and rubbing color fastness tester, and the effects of different modification conditions and cellulose nanofiber content on the performance of acrylic resin finishing agent were explored. The results showed that when 0.3% cellulose nanofiber was added, the mechanical properties of acrylic resin finishing agent were greatly improved. The tensile strength was up to 7.43 N/mm2, increased by 111.68%. The tear intensity was 17.61 N/mm and the elongation at break was 653%. Compared with the unmodified acrylic resin, the tear strength and elongation at break were increased by 32.61% and 31.92%. In addition, the modified acrylic resin was used as a finishing material to improve the performance of finished leather.