Multifunctional high-strength composite fabric coating agent, coating, method for preparing the same, and application thereof

A method for preparing a modified fabric using a multifunctional high-strength composite fabric coating agent, comprising:

• covering a fabric base with a multifunctional high-strength composite fabric coating agent to form a multifunctional high-strength composite fabric coating and obtain a modified fabric;
• wherein the thickness of the coating is in a range of 5-10 μm and the modified fabric has a waterproof-and-moisture-permeability, an antibacterial effect, a high adhesion ability, a tensile breaking strength 80% higher than that of the fabric base, a bursting strength 80% higher than that of the fabric base, and a tearing strength 80% higher than that of the fabric base;
• wherein the multifunctional high-strength composite fabric coating agent is prepared by:
• mixing a reinforcing agent, a synergist, and a solvent uniformly in a mass proportion of 1:0.025-2.5:20-50 with reacting at 20-100° C. for 1-10 hours to obtain a reinforcing agent with a reactive group on its surface;
• mixing a resin and a solvent uniformly in a mass proportion of 0.01-50:100 and are stirred for 1-60 minutes at a speed of 200-2000 rpm, so as to obtain a uniform and stable dispersion solution;
• and
• dispersing the reinforcing agent with the reactive group on its surface, a bifunctional dispersing agent, a leveling agent, a film forming agent, a softening agent, and an antibacterial agent uniformly in the dispersion solution according to a mass proportion of 0.01-0.6:0.02-0.5:0.02-0.4:0.01-0.3:0.01-0.4:0.01-0.3, so as to obtain the multifunctional high-strength composite fabric coating agent;
• wherein a step for preparing the reinforcing agent with the reactive group on its surface comprises:
• adding a reinforcing agent, a synergist, and a solvent in a mass proportion of 1:0.025-2.5:20-50 to a reactor and reacting for 1-10 hours at 20-100° C., wherein after reaction products are cooled, solids therein are separated and are dried at room temperature for 10-30 hours, and then, milling and screening are performed;
• wherein the synergist comprises a silane coupling agent and/or a polymer compound;
• wherein the silane coupling agent comprises one or more combinations of 3-aminopropyltrimethoxysilane, γ-(2,3-epoxypropoxy) propyltriethoxysilane, γ-methylpropenyloxypropyltrimethoxysilane, N-(β-aminoethyl)-γ-aminopropyltriethoxysilane, anilinoisophorone, and γ-aminopropylmethyldiethoxy silane;
• wherein the polymer compound comprises one or more combinations of polyvinyl alcohol, polyamide, polyacrylic acid, polymethylacrylic acid, polymaleic anhydride and copolymer of trans-butenedioic acid-propylene sulfonic acid.