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Preparation method of special fiber for antimony-free antibacterial hot air nonwovens

A non-woven fabric, hot air technology, applied in fiber processing, rayon manufacturing, fiber chemical characteristics, etc., can solve the problems of human body damage, single antibacterial effect, unsustainable antibacterial performance, etc., and achieve the effect of reducing pollution

Inactive Publication Date: 2019-04-05
JIANGSU JIANGNAN HIGH POLYMER FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, antimony-based catalysts are mostly used in the PET polymerization process, and the heavy metal antimony will remain in the fiber, which not only pollutes the environment, but also causes damage to the human body.
There are mainly two ways to obtain the antibacterial properties of skin-core composite fibers. One is to treat the fibers with antibacterial finishing agents in the finishing process, but the antibacterial properties cannot last; the other is to add inorganic or organic antibacterial substances to the fibers. In the cortex, but the antibacterial effect is often relatively simple

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 Preparation of Antibacterial Masterbatch

[0020] Step A: Add 200-300 parts by weight of water into the stirring tank, then add 90-120 parts by weight of zeolite while stirring, and continue to add 50-100 parts of soluble Zn while stirring after the zeolite is added. 2+ Salt, 3-15 parts soluble La 3+ salt, and stirred at a temperature of 90-100°C for 30-50min to obtain a mixed slurry for later use; step B: add the slurry obtained in step A and 0.5-1.0 parts by weight of grinding aid into a ball mill, and start wet refining Procedure, ball milling until the diameter of the zeolite is below 500nm; step C: put the slurry that has been ground in step B into a high-speed centrifugal spray dryer for spray drying, and spray dry powder with a particle size below 30 μm; step D: use the obtained The dry powder is pulverized through a jet mill to obtain a zeolite-loaded lanthanum-zinc inorganic antibacterial powder with a product particle size of 500-800nm;

[0021] St...

Embodiment 2

[0023] A method for preparing antimony-free antibacterial hot-air nonwoven special fiber, the steps comprising:

[0024] 1) Purified terephthalic acid and ethylene glycol are mixed in proportion and sent to the esterification tank for esterification reaction. During the esterification reaction, a titanium catalyst is added, and the esterification reaction temperature is 255-260°C;

[0025] 2) The esterification product is sent to the polycondensation kettle through the oligomer pipeline for polycondensation reaction. At the same time, the titanium catalyst, stabilizer and matting agent are also injected into the oligomer pipeline and sent to the polycondensation kettle to generate PET. The vacuum degree of the precondensation reaction is controlled at The absolute pressure is between 2-3KPa, and the temperature is controlled at 250-255°C; the vacuum degree of the final polymerization is controlled at an absolute pressure of 0.1-0.2KPa, and the temperature is controlled at 275-2...

Embodiment 3

[0028] A method for preparing antimony-free antibacterial hot-air nonwoven special fiber, the steps comprising:

[0029] 1) Purified terephthalic acid and ethylene glycol are mixed in proportion and sent to the esterification tank for esterification reaction. During the esterification reaction, a titanium catalyst is added, and the esterification reaction temperature is 255-260°C;

[0030] 2) The esterification product is sent to the polycondensation kettle through the oligomer pipeline for polycondensation reaction. At the same time, the titanium catalyst, stabilizer and matting agent are also injected into the oligomer pipeline and sent to the polycondensation kettle to generate PET. The vacuum degree of the precondensation reaction is controlled at The absolute pressure is between 2-3KPa, and the temperature is controlled at 250-255°C; the vacuum degree of the final polymerization is controlled at an absolute pressure of 0.1-0.2KPa, and the temperature is controlled at 275-2...

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Abstract

The invention discloses a preparation method of a special fiber for antimony-free antibacterial hot air nonwovens, wherein a cortex is PE, a core layer is PET, a molten mass which accounts for 5% to 12% of the volume of a PE melt transported to a pipeline of a composite spinning manifold is added in a dynamic mixer, and molten antibacterial master batch is added in the dynamic mixer, the mixture is evenly mixed and then returned to a main pipeline, and the amount of the antibacterial master batch added in the dynamic mixer is 2.5-5.0% wt of the total PE melt. By the adoption of the preparationmethod of the special fiber for the antimony-free antibacterial hot air nonwovens, the antibacterial master batch is added to the cortex of skin-core composite fiber, in which antibacterial components are La3+ and Zn2+, and a carrier is nano-zeolite. The La3+ has higher charge number (+3 valence) and a larger ion radius, which can be firmly combined in fabric fiber. And the La3+ and the Zn2+ canplay a synergistic bacteriostatic effect, the antibacterial effect is higher than that of La3+ alone or Zn2+ alone, and the antibacterial effect is strong and lasting.

Description

technical field [0001] The invention relates to a method for preparing special fibers for antimony-free antibacterial hot-air nonwoven fabrics, belonging to the technical field of textiles. Background technique [0002] Polyester, especially PET fiber in polyester, is directly spun from synthetic melt, which is a sign of technological progress in this industry. Compared with the method of cooling the melt into solid chips, and then melt spinning by the screw, the energy consumption is greatly reduced. , improve production efficiency, reduce the degradation of macromolecules, and thus greatly improve the product quality of the fiber, especially the uniformity of the physical and mechanical properties of the fiber. [0003] The skin-core composite short fiber with polyethylene as the skin layer and polyester PET as the core layer can be prepared into non-woven fabrics by spunlace method, which greatly reduces the manufacturing cost of non-woven fabrics and reduces the impact o...

Claims

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Application Information

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IPC IPC(8): D01F1/10D01F8/06D01F8/14D01D5/34
CPCD01D5/34D01F1/103D01F8/06D01F8/14
Inventor 浦金龙陶冶邓金芳
Owner JIANGSU JIANGNAN HIGH POLYMER FIBER
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