Abstract:

Polycarboxylic acid finishing of cotton fabrics was studied. In order to eliminate the effect of formaldehyde released by DP finishing, and reduce the yellowness caused by high temperature curing and phosphorus content in wastewater, DP finishing of cotton fabrics was performed with mixed citric acid and tartaric acid as finishing agent, and the effects of mass fraction of citric acid and tartaric acid, curing conditions, kinds and concentration of catalyst, and mass concentration of additives on the treatment were investigated. The experiment demonstrated that the optimum finishing results are obtained when mass fraction of citric acid to tartaric acid is 1:1, curing temperature is 180 ℃, curing time is 2 min, mass concentration of nanosilica is 2g/L, mass concentration of sodium hypophosphite is 20g/L, and mass concentration of softener LD-5030 is 20g/L.