Preparation method of durable flame-retardant silk product

Abstract

The invention relates to a preparation method of a durable flame-retardant silk product. The preparation method comprises the following steps: immersing a silk product into a solution containing phosphite ester and glutaraldehyde, and controlling the silk product, the phosphite ester and the glutaraldehyde to generate a Mannich reaction, thereby obtaining the durable flame-retardant silk product.LOI of the finally prepared durable flame-retardant silk product is 28.9%-30.1%; the carbon length measured after washing for 0 time is 8.2-9.5 cm, and the carbon length measured after washing for 10times is 11.9-13.4 cm; and a flame retardant grade reaches B1. According to the preparation method, by virtue of Mannich reaction among the phosphite ester, the glutaraldehyde and the silk product, phosphite ester is firmly fixed on silk fibers through covalent bonds, and the flame-retardant silk product with excellent washing resistance is prepared through one-step reaction. The flame-retardant silk product prepared through the method is excellent in flame-retardant effect, good in washing resistance, mild in treatment condition, easy and convenient to operate and short in technological process, the environment-friendly safety of the flame-retardant silk product in the using process is guaranteed, and the method has important practical application value.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant functional finishing of textiles, and in particular relates to a preparation method of durable flame-retardant silk products. Background technique [0002] Silk is a natural protein fiber with excellent properties such as softness, smoothness, soft luster, comfortable wearing, absorption and breathability, and is favored by consumers. Silk is widely used in the production of high-end bedding, upholstery fabrics, curtains, wall coverings and textile artworks. Silk textile products have been widely used in various fields of life, but at the same time it also brings us fire hazards. According to statistics, about 50% of the fires in the world are caused by the burning of textiles, and the fires caused by the burning of indoor textiles account for an important proportion. Therefore, the flame retardancy of silk products has also attracted much attention. Due to the high nitrogen content and ...

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Problems solved by technology

[0005] Chinese invention patent CN 109054694A discloses a preparation process of a flame-retardant down textile material, using diethyl phosphite, N-methylolacrylamide and epichlorohydrin to synthesize a flame retardant monomer, and then synthesizing The silicone acrylic emulsion is used as a flame retardant adhesive and a flame retardant monomer at the same time, and is evenly coated on the surface of the textile material to prepare a flame retardant down textile material. This method is complicated to operate and has a long process flow.

In addition, some studies have first used diethyl phosphite, acrylamide and glyoxal or epichlorohydrin or hexachlorocyclotriphosphazene to synthesize phosphorus-containing flame retardants, and then used the synthetic phosphorus-containing flame retardants by rolling and baking. improve the flame retardant performance of cotton and linen fabrics (synthesis and application of formaldehyde-free flame retardants for linen [J]. Journal of Dalian University of Technology, 2009, 28(002): 154-156; formaldehyde-free phosphorus nitrogen retardant for natural fibers Synthesis and application of flame retardant finishing agent [J]. Woolen Technology, 2019, 47(05): 58-62; Preparation and application of formaldehyde-free flame retardant FRC-P for cotton [J]. Printing and Dyeing, 2006, 32( 24): 14-16; Preparation and application of new durable formaldehyde-free flame retardant for cotton [J]. Printing and Dyeing Auxiliaries, 2014, 31(10): 6-10), which mainly involves the synthesis of flame retardants, which need Preparation of flame-retardant cotton and linen fabrics by multi-step reaction, the method is complicated to operate, the process is long, and the practical application value is not high

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