Method for preparing efficient and durable antibacterial melt-blown non-woven fabric

Abstract

The invention discloses a method for preparing antibacterial non-woven fabric, and particularly relates to a method for preparing efficient and durable nano-silver antibacterial melt-blown non-woven fabric. The method includes the steps that a benzene or methylbenzene or trichloromethane or carbon tetrachloride solution of an amphipathy hyperbranched polymer and a silver nitrate aqueous solution are mixed and stirred, and a high-concentration solution of the amphipathy hyperbranched polymer is obtained through standing liquid separation and rotating evaporation; the high-concentration solution is sprayed into raw material particles or slices of melt-blown non-woven fabric with a spraying method, continuous stirring is carried out, then the processing working procedure of the melt-blown non-woven fabric is carried out, and the antibacterial non-woven fabric with fibers containing nano-silver particles can be obtained. According to the method, nano-silver is generated in melt-blown non-woven fabric fibers through the amphipathy hyperbranched polymer in an in-situ control mode, and the generated nano-silver has the advantages of being small in particle size, even in dispersing and high in combining firmness; meanwhile, existing melt-blown non-woven fabric production equipment does not need to be upgraded and transformed, and processing is easy and convenient.

Description

Technical field [0001] The invention relates to a method for preparing an antibacterial meltblown nonwoven fabric, in particular to a method for preparing an efficient and durable antibacterial meltblown nonwoven fabric. Background technique [0002] Because of its simple preparation process and low cost, meltblown nonwovens 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 nonwoven products. Among them, antibacterial nonwovens have the most extensive application prospects, especially in areas closely related to people's daily lives. For example, non-woven fabrics for food packaging, non-woven fabrics for air filtration such as masks and air ...

AI Technical Summary

Problems solved by technology

The in-situ generation method in the finishing process avoids the use of related adhesives and improves the bonding fastness of nanomaterials to a certain extent. However, nanomaterials are still bonded to the fiber surface, which cannot guarantee long-term fastness, especially Under harsh conditions of use, such as frequent washing, friction, etc.

Using nano-silver and spinning raw material chips or masterbatch for mixed spinning Although nano-silver is directly added during the forming process of the nonwoven fabric, which shortens the production process and avoids the cost of finishing equipment and manpower, but through nano-silver There are also some problems in the preparation of nano-silver antibacterial nonwovens by mixing and spinning powder and polymer slices. Big