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A method for preparing piezoelectric antibacterial mask filter material based on Dingdao microfiber modification

A piezoelectric and mask technology, applied in the field of piezoelectric antibacterial mask filter material based on Dingdao microfiber modification, can solve allergies, inflammation, bacteria, low dust filtration efficiency, bacterial drug resistance and other problems

Active Publication Date: 2022-02-01
成都产品质量检验研究院有限责任公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the traditional Dingdao microfiber has large pores and high porosity, and has low filtration efficiency for bacteria and dust.
In addition, the traditional Dingdao microfiber has no antibacterial function
Adding small molecule antibacterial agents can endow the product with antibacterial properties, but most of the small molecule antibacterial agents are physiologically toxic and can cause side effects such as allergies and inflammation when in contact with human skin; after these masks are discarded, the small molecule antibacterial agents will still be in the environment Accumulation, leading to bacterial resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a method for preparing a piezoelectric antibacterial mask filter material based on the modification of Dingdao microfiber, comprising the following steps:

[0031] (1) Mix 500g of nylon 6 masterbatch and 300g of nylon 11 masterbatch evenly, and dry at 80°C for 8h, then use a twin-screw extruder to extrude it to obtain nylon mixed masterbatch;

[0032] (2) Get 500g of the nylon mixed masterbatch and 500g of alkali-soluble ethylene terephthalate slices and dry them, then melt and extrude the melts at high temperature through the screw, and enter the composite spinning assembly from different distribution pipes. The body is divided into fine streams in the module and then merged, and finally spun and extruded through the spinneret to obtain the fixed island composite fiber;

[0033] (3) Opening and dedusting the island-fixed composite fibers, carding, mixing, laying, pre-needling, and main needling in sequence to obtain a non-woven fabric with a th...

Embodiment 2

[0039] This embodiment provides a method for preparing a piezoelectric antibacterial mask filter material based on the modification of Dingdao microfiber, comprising the following steps:

[0040] (1) Mix 800g of nylon 6 masterbatch and 400g of nylon 11 masterbatch evenly, and dry at 100°C for 8h, then use a twin-screw extruder to extrude it to obtain nylon mixed masterbatch;

[0041] (2) Get 800g of the nylon mixed masterbatch and 800g of alkali-soluble ethylene terephthalate slices and dry them, and then melt and extrude the melts by high-temperature screw rods respectively, and enter the composite spinning assembly from different distribution pipes. The body is divided into fine streams in the module and then merged, and finally spun and extruded through the spinneret to obtain the island composite fiber;

[0042] (3) Opening and dedusting the island-fixed composite fibers, carding, mixing, laying, pre-needling, and main needling in sequence to obtain a non-woven fabric with...

Embodiment 3

[0048] This embodiment provides a method for preparing a piezoelectric antibacterial mask filter material based on the modification of Dingdao microfiber, comprising the following steps:

[0049] (1) Mix 1000g of nylon 6 masterbatch and 500g of nylon 11 masterbatch evenly, and dry at 120°C for 12 hours, and then use a twin-screw extruder to extrude it to obtain nylon mixed masterbatch;

[0050] (2) Get 1000g of the nylon mixed masterbatch and 1000g of alkali-soluble ethylene terephthalate slices and dry them, and then melt and extrude the melts by high-temperature screw rods respectively, and enter the composite spinning assembly through different distribution pipes. The body is divided into fine streams in the module and then merged, and finally spun and extruded through the spinneret to obtain the fixed island composite fiber;

[0051] (3) Opening and dedusting the island-fixed composite fibers, carding, mixing, laying, pre-needling, and main needling in sequence to obtain a...

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PUM

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Abstract

The invention relates to a method for preparing a piezoelectric antibacterial mask filter material based on modification of Dingdao superfiber. The method uses nylon 11 and polyvinylidene fluoride to modify the fixed-island superfiber, and with the help of a specific polyurethane filling material, realizes the high-voltage polarization of the modified fixed-island superfiber, and then generates 1-2V piezoelectricity. The mask filter material made by this method can replace the traditional melt-blown cloth filter material, and can convert the force generated by human activities into ultra-low voltage to play a bactericidal function, without adding any small molecule antibacterial agent, and the product is harmless to the human body. There is no bacterial resistance due to environmental accumulation of antimicrobial agents after disposal.

Description

technical field [0001] The invention belongs to the technical field of daily protective products, and in particular relates to a method for preparing a piezoelectric antibacterial mask filter material based on Dingdao superfiber modification. Background technique [0002] Personal protective masks generally have a multi-layer structure, with single-layer spunbond layers on the inside and outside, and single-layer or multi-layer meltblown cloth in the middle. Melt-blown cloth is commonly known as the "heart" of masks, and has good filtration, shielding, heat insulation and oil absorption. The main raw material of the melt-blown cloth is polypropylene (PP). The high-speed hot air flow is used to draw the PP melt stream extruded from the spinneret hole of the die head to form ultra-fine fibers, which are collected on the condensation screen or roller. , the non-woven fabric is formed by the bonding of the fibers themselves, which can effectively filter bacteria and dust; when ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/12D01F8/14D06M15/572D06M15/256D06M10/02B01D39/16D04H1/4382D04H1/4334D04H1/46D04H1/72A41D13/11A41D31/04A41D31/30D06M101/34D06M101/32
CPCD01F8/12D01F8/14D06M15/572D06M15/256D06M10/025B01D39/1623D04H1/4382D04H1/4334D04H1/46D04H1/72A41D13/1192A41D31/30A41D31/04D06M2101/34D06M2101/32
Inventor 王睿谭雪玲胡丹毛佳伟张晓飞陈静陈意
Owner 成都产品质量检验研究院有限责任公司