Method for preparing nano-silver antibacterial melt-blown non-woven fabric

Abstract

The invention discloses a method for preparing an antibacterial non-woven fabric and particularly discloses a method for preparing an efficient and long-acting nano-silver antibacterial melt-blown non-woven fabric. Benzene, toluene, trichloromethane or carbon tetrachloride solution of an amphiphilic hyperbranched polymer is mixed with silver nitrate aqueous solution, and a high-concentration solution of the amphiphilic hyperbranched polymer is obtained through standing liquid separation and rotary evaporation. A spraying method is adopted to spray the high-concentration solution to raw material particles or slices of the melt-blown non-woven fabric, stirring is performed continuously, and after a processing process of the melt-blown non-woven fabric, the antibacterial non-woven fabric with fibers containing nano-silver particles can be obtained. The amphiphilic hyperbranched polymer is utilized to perform in-situ control in the melt-blown non-woven fabric fibers to generate nano-silver, the generated nano-silver has the advantages of being small in particle diameter, being dispersed evenly and being high in combining firmness, an existing melt-blown non-woven fabric production device does not need to be upgraded and rebuilt, and the method has simplicity and convenience in processing.

Description

Technical field [0001] The invention relates to a preparation method of an antibacterial non-woven fabric, in particular to a preparation method of an efficient and long-lasting nano silver antibacterial melt-blown non-woven fabric. Background technique [0002] Because of its simple preparation process and low cost, melt-blown non-woven fabrics have a wide range of applications in daily life, such as clothing accessories, packaging materials, air filtration, water filtration materials, and disposable medical materials. It is precisely because of its wide range of applications that higher requirements are put forward for its high performance and functionality, such as antibacterial, flame retardant, antistatic and other functional non-woven products. Among them, antibacterial non-woven fabrics have the most extensive application prospects, especially in areas closely related to people's daily life, such as non-woven fabrics for food packaging, non-woven fabrics for air filtration...

AI Technical Summary

Problems solved by technology

The in-situ generation method in the finishing process avoids the use of related adhesives. Although the bonding fastness of nano-silver is improved to a certain extent, the nano-silver is still combined with it on the surface of the fiber, and the long-term fastness cannot be guaranteed. Under harsh conditions of use, such as frequent washing, friction, etc.