Preparation method and application of super-hydrophobic antibacterial finishing agent for cotton fabrics

Abstract

The invention relates to a super-hydrophobic antibacterial finishing agent for cotton fabrics. The super-hydrophobic antibacterial finishing agent comprises following components: long-chain alkyl alkoxy siloxane, nano zinc oxide and silane behenyl trimethyl ammonium chloride used as an emulsifier antibacterial agent. Long-chain alkyl alkoxy siloxane and nano zinc oxide are used as super-hydrophobic raw materials and silane behenyl trimethyl ammonium chloride is used as the emulsifier antibacterial agent to prepare the super-hydrophobic antibacterial finishing agent for fabrics, particularly the cotton fabrics; water is used as a dispersion medium so that the disadvantage of existing patented technologies at home and abroad that an organic solvent is taken as a carrier to prepare the super-hydrophobic fabrics is overcome; the contact angle between the cotton fabrics treated by the super-hydrophobic antibacterial finishing agent and water drops is larger than 150 degrees and the super-hydrophobic effect of a lotus leaf is realized; the water drops roll on the surfaces of the cotton fabrics and are not absorbed by the cotton fabrics for long time; meanwhile, the super-hydrophobic antibacterial finishing agent has good antibacterial and mould-proof functions.

Description

technical field [0001] The invention belongs to the technical field of waterproof, mildewproof and antibacterial agents, and relates to a method for preparing a superhydrophobic and antibacterial finishing agent for cotton fabrics suitable for baby diaper pads, raincoats and cotton tarpaulins and its application. Background technique [0002] Fabric waterproofing agent refers to substances that can make fabrics have a hydrophobic function. Early fabric waterproofing agents included oils, waxes and synthetic waterproofing agents such as aluminum waterproofing agents and chromium stearate complex waterproofing agents. Since the appearance of organosilicon compounds, active silicone oil has been widely used as fabric waterproofing agent because of its strong hydrophobicity, aging resistance and durability. Silicone oil-based waterproofing agents are divided into solvent-based and emulsion-based waterproofing agents. The solvent type is to dissolve the active silicone oil in o...

AI Technical Summary

Problems solved by technology

Chinese patent "Preparation method of an insulating super-hydrophobic coating" Chinese patent application number 201210278701.2. Use a mixed dispersion of silicone glass glue and vinylidene fluoride to coat the surface of the substrate and perform heat treatment to make water and the surface of the coating film The contact angle is greater than 150°, the breakdown voltage is greater than 15KV / mm; the application number is 201010619389, the Chinese patent "Superhydrophobic fabric or superhydrophobic non-woven fabric and its manufacturing method", the Shanghai Institute of Applied Physics, Chinese Academy of Sciences uses long-chain alkane monomers to fabric Perform irradiation grafting reaction to obtain super-hydrophobic fabric or super-hydrophobic non-woven fabric. This patent uses expensive irradiation equipment, which is difficult to industrialize; the Chinese patent "Preparation method of super-hydrophobic fabric" with application number 200810050602.2, Changchun, Chinese Academy of Sciences The cotton fabric used in the chemical industry is soaked in the mixed solution of auric acid and citric acid for 3-8 minutes, and then --, this method uses nano-materials of auric acid chloroform, and the price is too expensive; Chinese patent "a preparation method of a superhydrophobic fabric and Super-hydrophobic functional fabric"; Tianjin Weineng New Material Technology Co., Ltd. with application number 210310074491 uses a mixed sol of silica gel and titanium dioxide to soak the fabric --- drying....

U.S. Patent Application No. VSP2006 / 0292345A, using the gel-precipitation method to make various silica sol nano-precipitation onto the fabric and then dissolving it in an ethanol solution with octadecyltrimethoxysilane to obtain a super-hydrophobic fabric, which is compatible with water The contact surface is greater than 150°, and the rolling inclination is less than 15°. This method also uses ethanol as a solvent, which poses a safety hazard.