Preparation and Performance of Nano Hydrotalcite/Acrylic Resin Composite Leather Finishing Agents
A new nanocomposite leather finishing agent(H-LDH/PBMAS)was prepared by introducing nano hydrotalcite into the modified acrylic resin matrix(PBMAS)with a simple in-situ polymerization.The structure of the sample was characterized by FT-IR,XRD and SEM,etc.The sodium p-styrene sulfonate monomer was selected as both an acrylic resin based modifier for copolymerization and an emulsifier,and the percentage content of the sodium p-styrene sulfonate in the acrylic resin matrix was optimized.A series of stable nanocomposite leather finishing emulsion were prepared by introducing nano hydrotalcite into the modified acrylic resin matrix.Moreover,the emulsion with good film-forming property was applied to the coating of sheepskin and compared the finishing effects.The experimental results show that the synthesized nano composite finishing emulsion has a stable performance and good finishing effects on sheepskin.The introduction of hydrotalcite in copolymer matrix improves the wear resistance,heat preservation and flame retardant properties of the coatings.
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