Preparation method of medical stone silver-loaded antibacterial regenerated polyester fiber

A technology of regenerated polyester and silver-loaded antibacterial, applied in the direction of fiber chemical characteristics, single-component polyester rayon, rayon manufacturing, etc., can solve the problems of polyester fiber antibacterial modification that have never been seen before, and achieve long-lasting antibacterial effect of ability

Pending Publication Date: 2022-03-04
SHANGHAI DEFULUN CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When developing medical stone water purification polyester fiber in 2020, a customer asked whether it is possible to develop medical stone silver-loaded antibacterial regenerated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A kind of preparation method of medical stone silver-loaded antibacterial regenerated polyester fiber comprises the following steps:

[0045] The first step, the preparation method of medical stone silver-loaded powder comprises the following steps:

[0046] Grind the medical stone until the particle size is 0.8-1mm, put 100g of the crushed medical stone into a porcelain crucible, put the crucible into a muffle furnace at 450°C for calcination for 1 hour, cool naturally to room temperature, and obtain 97g The medical stone powder is ball milled until the average particle size of the powder is 300nm.

[0047]The above-mentioned medical stone powder is configured into medical stone-silver nitrate solution according to the solid-to-liquid ratio of each gram of medical stone powder and silver nitrate solution 1g: 100mL, wherein the concentration of silver nitrate solution (water as solvent) is 0.75 mol / L. Place the flask containing the solution in a constant temperature w...

Embodiment 2

[0061] The preparation method of the single hollow cross-section medical stone silver-loaded antibacterial regenerated polyester fiber with a nominal linear density of 2.22dtex comprises the following steps:

[0062] Change the 1800-hole circular-hole spinneret in the fourth step of Example 1 to a 1200-hole hollow-hole spinneret, change the temperature of the spinning box to 285°C, and change the drawing tank oil bath for post-spinning drafting The temperature was changed to 70-72°C, the draft ratio was changed to 3.45 times, and the rest remained unchanged. The measured fiber cross section is a hollow circular cross section, the measured fiber linear density is 2.27dtex, and the breaking strength is 4.65cN / dtex. The antibacterial rate of the fiber to Staphylococcus aureus (ATCC 6538), Escherichia coli (ATCC 25922) and Candida albicans (ATCC 10231) is all greater than 99%. The fiber sample was placed under a standard light source box and irradiated by ultraviolet light for 30...

Embodiment 3

[0065] The nominal linear density is 1.44dtex and the preparation method of medical stone silver-loaded antibacterial regenerated polyester fiber with trilobal cross-section comprises the following steps:

[0066] Change the 1800-hole circular-hole spinneret in the fourth step of Example 1 to a 1800-hole trilobal-shaped spinneret, change the temperature of the spinning box to 285°C, and change the drafting tank of the post-spinning draft The oil bath temperature was changed to 70-72°C, the draft ratio was changed to 3.45 times, and the rest remained unchanged. The measured fiber cross-section is trilobal, the measured fiber linear density is 1.48dtex, and the breaking strength is 5.00cN / dtex. Before and after the fiber was washed, the antibacterial rate of the fiber against Staphylococcus aureus (ATCC 6538), Escherichia coli (ATCC 25922) and Candida albicans (ATCC 10231) and the condition of the fiber under ultraviolet light or natural light did not change .

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Abstract

The invention discloses a preparation method of medical stone silver-loaded antibacterial regenerated polyester fibers, which comprises the following steps of: independently metering 5-7 percent by weight of dried medical stone silver-loaded antibacterial master batch and 93-95 percent by weight of dried regenerated polyester chips by using an on-line injection machine, uniformly mixing the medical stone silver-loaded antibacterial master batch and the regenerated polyester chips, and uniformly mixing the medical stone silver-loaded antibacterial master batch and the regenerated polyester chips, so as to obtain the medical stone silver-loaded antibacterial regenerated polyester fibers. Stirring and blending, melting and extruding by a screw extruder, spinning by a spinneret plate, cooling by circular blowing, winding and falling into a barrel to obtain a precursor; and carrying out post-spinning drafting, tension heat setting, curling, cutting and packaging on the protofilament to obtain the medical stone silver-loaded antibacterial regenerated polyester fiber. The medical stone silver-loaded antibacterial regenerated polyester fiber has lasting antibacterial ability.

Description

technical field [0001] The invention belongs to the technical field of regenerated polyester fiber preparation, and in particular relates to a preparation method of medical stone silver-loaded antibacterial regenerated polyester fiber. Background technique [0002] The current antibacterial polyester fiber is mainly prepared by blending method, that is, during polyester spinning, the antibacterial fiber is made by adding antibacterial agent and polyester blend and melt spinning. Although inorganic antibacterial agents cannot kill bacteria as quickly as organic antibacterial agents, they have obvious advantages over natural and organic antibacterial agents in terms of safety, temperature resistance, broad-spectrum and processability, so inorganic antibacterial agents Antimicrobial agents have always been the most studied and practically used antibacterial agents. Although metal ions such as lead, cadmium, and mercury in inorganic antibacterial agents have strong antibacteria...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10
CPCD01F6/92D01F1/103
Inventor 冯忠耀王佳欢李忠王缘李东华莫建森陆育明顾惠琴杨成侯仕涛
Owner SHANGHAI DEFULUN CHEM FIBER
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