Abstract:

For the purpose of exploring flame retardant effect of silk fabric grafted by the kind of home-made vinyl phosphorus nitrogen flame retardant (PN), effects of process factors on silk fabric’s grafting rate and relationship between grafting rate and flame retardant were investigated . Then the washing fastness, morphology of combustion carbon residue, element content of phosphorus - nitrogen, physical and dyeing performance of finished silk fabrics were observed and measured. The results showed that effect of silk fabric’s flame retardant grafted by PN was good and the limit oxygen index(LOI) increased with the grafting rate’s growth. The grafting rate was 15.4% and the LOI was 31.2% under this condition. The LOI was still 30.9% after washing for 50 times，not affecting the physical properties of silk fabric.

Key words: sild fabeic, vinyl phosphorus nitrogen flame retardant, graftiing, limit oxygen kndex, washing resistance