The invention discloses a
flame-proof treatment method of real silk fabrics by a biological
enzyme method, belonging to the biotechnical field of
spinning. The method disclosed by the invention aims to overcome the deficiencies that real silk fabrics in
flame-proof treatment by conventional chemical methods are not high in washability, the real silk is easy to damage in high temperature baking, the whiteness of
fiber products is easy to decrease and the like. According to the method disclosed by the invention,
tyrosine residues in silk
fibroin are oxidized to dopaquinone structures with stronger reactivity by means of the characteristic of
tyrosinase which has a
catalytic oxidation effect on the
tyrosine residues in real
silk fiber to promote a
grafting reaction on an organophosphorus
flame retardant containing a primary amine base and the dopaquinone structures, and the flame retardant function of the real silk fabrics is improved through a
nitrogen-
phosphorus synergistic effect, so that flame-proof treatment of the real silk fabrics by the biological
enzyme method is realized. The method disclosed by the invention comprises the following process flows: real
silk fabric pre-treatment, and catalyzation of the organophosphorus flame retardant containing the primary amine base by the
tyrosinase to graft, water-washing and
drying post-treatment. For the fabrics treated by the method disclosed by the invention, not only is the flame retardant performance improved, but also the mechanical properties of the fabrics are further enhanced. Compared with conventional chemical methods, with the adoption of flame-proof treatment by
tyrosinase catalyzation on the real silk fabrics, the method is low in
energy consumption, high in efficiency and less in
pollution in the
processing process and is beneficial to environment protection.