Application of Double Epoxy Group-terminated Polysiloxane in Anti-crease Finishing of Silk Fabric

Fang Yuting;Wu Minghua;Guo Wendeng;Lü Anna;Zhejiang Sci-Tech University;Engineering Research Center for Eco-dyeing and Finishing of Textiles,Ministry of Education;The Key Laboratory of Advanced Textile Materials and Manufacturing Technology,Ministry of Education;Wensli Group Limited Company;

Anti-crease finishing agent;;Double epoxy group-terminated polysiloxane;;Hydrosilylation;;Silk fabric

In order to reduce strength damage of silk fabric after anti-crease finishing,double epoxy group-terminated polysiloxane was synthesized. After being emulsified,it was used as finishing agent for anti-crease finishing of silk fabric.The influence of particle size in finishing agent emulsion and molar mass of polysiloxane segment on properties of the finished silk fabric were studied. The results showed that the smaller the emulsion particle size was,the higher the wrinkle recovery angle of the finished silk fabric had. With the increase of the molar mass of polysiloxane segment,wrinkle recovery angle of the finished silk fabric increased at first and then decreased. When the relative molar mass of polysiloxane segment was 1 200 g / mol,the dry and wet crease recovery angle of the finished silk fabric reached their highest values.The optimized technological conditions for anti-creaset finishing obtained from single factor experiment was as following:the dosage of finishing agent emulsion was 60 g / L,the dosage of catalyst Na2S2O3 was 4 g / L,the curing temperature was 130 ℃ and curing time was 5 min. Under this condition,the finished silk fabric had high wrinkle resistance and washing resistance,and high strength retention rate. Meanwhile,no yellowing of the finished silk fabric was observed.Compared with other finishing agents, double epoxy group-terminated polysiloxan is an excellent agent for anti-crease finishing of silk fabric.