Hydrolysis optimization and application of animal glue binder for casting

Abstract

With the animal glue binder as raw material, the optimal hydrolysis process of anhydrous sodium carbonate is determined by single factor. The results show that the optimum hydrolysis process is as following. The hydrolysis time is 30 min for a reaction temperature of 60°C, and the mass ratio of water to animal glue is 120:100. The amount of anhydrous sodium carbohydrate is 4wt.% to binder. Under these conditions, the compression strength of binder reaches 2.50MPa, and the surface tension of binder is 33.236 mN/m. The molecular weight of hydrolyzed binder is greatly reduced, and the binder contains hydrophilic molecular groups such as amino and hydroxyl, which improves the hydrophilicity and thermal stability of the animal glue binder.