LAUSR

In order to improve the crease resistant property of silk fabric and reduce the tensile strength damage of finished silk fabric, the isocyanate terminated polysiloxane (ITPSI) was prepared with hydrogen terminated polysiloxane (HTPSI) and methylallyl alcohol as raw materials, diphenylmethane diisocyanate (MDI) as functional modifier, and it was used as crease resistant finishing agent for silk fabric. The effect factors of crease resistant properties of finished silk fabric were studied and the crease resistant properties of finished silk fabric were evaluated. The results showed that when the molar mass of HTPSI was 1914 g/mol, the finished silk fabric obtained the best crease resistant property. The optimal conditions of the finishing process was that the dosage of ITPSI crease resistant finishing agent was 60 g/ l , the baking temperature was 150 °C, and the baking time was 3 min. Under these finishing conditions, the dry/wet crease recovery angles (DCRA/WCRA) of finished silk fabric were 302.6 ° and 229 °, respectively, both the crease resistant property and the washability were good. There is no apparent effects on tensile strength and whitenesss of finished silk fabric by this treatment. Compared with epoxy modified polysiloxane (EMPSI) crease resistant finishing agent on the market, the silk fabric finished by ITPSI crease resistant finishing agent had better crease resistant effect and less tensile strength damage.