A kind of preparation method of zinc oxide polyester fiber deposited on the surface of titanium dioxide

Abstract

The invention discloses a preparation method of polyester fiber with zinc oxide deposited on the surface of titanium dioxide, which comprises the steps of: preparing zinc oxide nano powder deposited on the surface of titanium dioxide; surface modification of zinc oxide nano powder deposited on the surface of titanium dioxide: passing the nano antibacterial powder through high speed The kneader is used for surface modification, and the surface modifier is sprayed into the atomization device and mixed with the nano-antibacterial powder; the preparation of the anti-bacterial masterbatch: the surface-modified nano-antibacterial powder and the resin powder are mixed evenly, and the mixed raw materials are double- The antibacterial masterbatch is obtained by screw extrusion, blending, granulation and extrusion; the antibacterial masterbatch is dried and evenly mixed with polyester slices, and fed to a feeder of a spinning machine for melt spinning to obtain the antibacterial polyester fiber. The invention prepares functional master grains through nanometer antibacterial powder preparation and surface modification, and spins them to prepare white antibacterial polyester fibers.

Description

technical field [0001] The invention belongs to the field of functional textile materials, and in particular relates to a preparation method of zinc oxide polyester fiber deposited on the surface of titanium dioxide. Background technique [0002] The antibacterial problem has always been a persistent problem faced by chemical fiber fabrics. At present, there are some solutions such as solving the problem from the source of the fiber, which can prepare antibacterial fibers, such as using high additives and composite spinning technology to prepare antibacterial fibers. The antibacterial powder used The body is silver-based, zinc-based, copper-based, etc. Fabrics made of these fibers can fully meet the antibacterial requirements of fabrics and have a wide range of applications in some security fields. [0003] However, this type of fiber also has irreparable defects: first, the cost of silver is high, and its application is limited due to price and cost control, and the stabili...

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Problems solved by technology

[0003] However, this type of fiber also has irreparable defects: first, the cost of silver is high, and its application is limited due to price and cost control, and the stability of silver is poor, and light resistance needs to be improved; second, zinc The addition of the copper system is relatively high. Generally, zinc oxide is used as the antibacterial fiber, and the addition amount must reach about 4% to achieve a good antibacterial effect; third, the discoloration effect of the copper system is too strong, and the copper system antibacterial fiber currently on the market is useful. Copper oxide has low antibacterial efficiency and is black. Using cuprous oxide or simple copper as the antibacterial medium has a better antibacterial effect, but the color of the spun fiber is unstable, and it is prone to discoloration, which will affect the application; fourth, the metal salt series, In order to solve the above problems, some people use metal salts to prepare antibacterial fibers, but in the later stage of dyeing and finishing, due to the high temperature and high pressure water, the metal ions are precipitated, resulting in a decline in antibacterial effect, which also affects the washability of the antibacterial function of the fabric. , so the application is also limited

However, although this method is cheap and effective, it also has inevitable defects: (1) additional pollution, generally after the use of antibacterial agents, increases the degree of pollution of wastewater, and also increases the difficulty of wastewater treatment; (2) Persistence Not enough, the antibacterial finishing method adopted has poor washability, and generally rarely has the washability that can meet the standard requirements

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