High-efficiency flame-retardant, light, thin and soft multi-fiber blended fabric and preparation method thereof

A preparation method for a multi-fiber blended fabric, the multi-fiber blended fabric comprising:

• 82 wt % to 87 wt % of base fabric, 5 wt % to 8 wt % of flame retardant, and 8 wt % to 10 wt % of antistatic agent, the flame retardant comprising 70 wt % to 80 wt % of hydroxylated polysaccharide, 15 wt % to 25 wt % of boric acid compound and 5 wt % of guanidine sulfamate, the method comprising:
• (Step 1) washing the base fabric, soaking the base fabric in 10% of aqueous ethanol solution in parts by volume, which is heated under a water bath condition at 60° C. for 4 hours, washing the base fabric with deionized water, and drying the base fabric in a drier at 60° C.;
• (Step 2) after soaking the base fabric obtained in Step 1 in a grafting solution for 1 to 2 hours, taking out the base fabric and irradiating the base fabric under ultraviolet light for 10 to 20 minutes, and then washing with acetone and deionized water and drying in the drier at 60° C. to obtain a first fabric;
• (Step 3) soaking the first fabric obtained in Step 2 in a flame retardant solution, a mass ratio of the flame retardant solution to the first fabric being 10:1, shaking the flame retardant solution soaked with the first fabric in a water bath shaker at a set temperature of 80° C. for 4 to 6 hours, and then washing with deionized water and drying to obtain a second fabric;
• (Step 4) dipping and rolling the second fabric obtained in Step 3 twice in a metal alkoxide sol with a padding pressure of 1 kg/cm3, performing a pre-baking process, and then baking to give a product of the multi-fiber blended fabric, a pre-baking temperature being 100° C. and a duration of the pre-baking process being 3 to 6 minutes.