Hydrophobization of coarse calico by wet treatment in aluminum chloride solutions

This paper describes the method of wet chemistry used for hydrophobization of coarse calico surface. It was found that hydrophobicity of coarse calico surface is achieved by the formation of aluminum oxide on the surface. An experimental plan was drawn up according to the Taguchi method. The effect of soap solution temperature, aluminum chloride solution concentration, sample treatment time in aluminum chloride solution and heat treatment temperature on water absorption, contact angle, capillary absorption and calico moisture content was studied. The dependencies of hygroscopic properties on the process parameters were obtained. Capillary absorption and water absorption of the test samples increased with increasing concentration of aluminum chloride solution. An increase in the processing time of coarse calico samples in an aluminum chloride solution leads to a decrease in the hydrophobicity of the samples. The characteristics of the dependencies of hygroscopic properties on the temperature of heat treatment and the temperature of the soap solution are similar.

Automated summary

This paper describes the wet chemistry method used to hydrophobize the surface of coarse calico. The hydrophobicity of the surface was achieved by the formation of aluminum oxide. A Taguchi experimental plan was used to investigate the effects of soap solution temperature, aluminum chloride solution concentration, sample treatment time in the aluminum chloride solution, and heat treatment temperature on water absorption, contact angle, capillary absorption, and calico moisture content. The results showed that capillary absorption and water absorption increased with increasing concentration of aluminum chloride solution, while a longer processing time in the aluminum chloride solution resulted in decreased hydrophobicity of the samples. The dependencies of hygroscopic properties on heat treatment temperature and soap solution temperature were found to be similar.