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Process for producing melt-blown material

A production process, melt-blown technology, applied in the field of non-woven materials, can solve the problems of limited adsorption content and secondary pollution of melt-blown cloth, and achieve low cost, good charge storage capacity, and good stability

Inactive Publication Date: 2020-08-14
XUZHOU HAITIAN PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In masks, after the melt-blown cloth absorbs a large number of bacteria and viruses, the germs still survive in the melt-blown cloth. The adsorption content of the melt-blown cloth is limited. Under high demand, the working life of the melt-blown cloth is particularly important, and in During the daily process of taking off the mask, it is easy to release the germs in the melt-blown cloth, causing secondary pollution. How to improve the adsorption performance of the melt-blown cloth and increase the service life is an important point of current research

Method used

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  • Process for producing melt-blown material
  • Process for producing melt-blown material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add povidone into water to make a 2.5-2.8% povidone solution, add silver nitrate to the solution, and stir thoroughly to obtain a mixed solution; the mass ratio of povidone to silver nitrate is 1:5;

[0024] (2) Add the same volume of 10% ferrous sulfate aqueous solution to the mixture obtained in step (1) at a rate of 0.2 to 0.5 mL / s; react at 55°C for 40 minutes, and then wash and centrifuge after cooling to room temperature , take the precipitate and dry it in vacuum to get nano-silver;

[0025] (3) Put 1 mass part of nano-silver, 40 mass parts of nano-titanium dioxide and 3200 mass parts of polypropylene base material into a high-speed mixer, add 35 parts of silane coupling agent KH560, stir well, and keep the temperature at 100-110°C Dry for 1-3 hours to obtain a mixed masterbatch;

[0026] (4) Add the mixed masterbatch obtained in step (1) into a twin-screw compounding extruder for melt extrusion and granulation to obtain a modified polypropylene base materia...

Embodiment 2

[0029] (1) Adding povidone into water to make a 2.5-2.8% povidone solution, adding silver nitrate to the solution, and fully stirring to obtain a mixed solution;

[0030] (2) Add the same volume of 10% ferrous sulfate aqueous solution to the mixture obtained in step (1) at a rate of 0.2 to 0.5 mL / s; react at 55°C for 40 minutes, and then wash and centrifuge after cooling to room temperature , take the precipitate and dry it in vacuum to get nano-silver;

[0031] (3) Put 1.25 parts by mass of nano-silver, 40 parts by mass of nano-titanium dioxide and 3200 parts by mass of polypropylene base material into a high-speed mixer, add 35 parts of silane coupling agent KH560, stir well, and keep the temperature at 100-110°C Dry for 1-3 hours to obtain a mixed masterbatch;

[0032] (4) Add the mixed masterbatch obtained in step (1) into a twin-screw compounding extruder for melt extrusion and granulation to obtain a modified polypropylene base material.

[0033] (5) The polytetrafluor...

Embodiment 3

[0035] (1) Adding povidone into water to make a 2.5-2.8% povidone solution, adding silver nitrate to the solution, and fully stirring to obtain a mixed solution;

[0036] (2) Add the same volume of 10% ferrous sulfate aqueous solution to the mixture obtained in step (1) at a rate of 0.2 to 0.5 mL / s; react at 55°C for 40 minutes, and then wash and centrifuge after cooling to room temperature , take the precipitate and dry it in vacuum to get nano-silver;

[0037] (3) Put 0.9 parts by mass of nano-silver, 40 parts by mass of nano-titanium dioxide and 3200 parts by mass of polypropylene base material into a high-speed mixer, add 35 parts of silane coupling agent KH560, stir well, and keep the temperature at 100-110°C Dry for 1-3 hours to obtain a mixed masterbatch;

[0038] (4) Add the mixed masterbatch obtained in step (1) into a twin-screw compounding extruder for melt extrusion and granulation to obtain a modified polypropylene base material.

[0039] (5) The polytetrafluoro...

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Abstract

The invention belongs to the technical field of non-woven materials, and particularly relates to a process for producing a melt-blown material. The melt-blown material comprises a modified polypropylene fiber base material endowed with antibacterial performance through modification with nano silver and nano titanium dioxide and polytetrafluoroethylene ultrafine powder, and the weight ratio of thepolytetrafluoroethylene ultrafine powder to the polypropylene fiber base material is 1:800-1200. The melt-blown cloth prepared from the melt-blown material produced by the process for producing the melt-blown material has relatively good antibacterial performance and relatively good electrostatic charge storage capacity.

Description

technical field [0001] The invention belongs to the technical field of nonwoven materials, and in particular relates to a process for producing meltblown materials. Background technique [0002] The importance of meltblown cloth in masks has been fully proved in the prevention and control of epidemics. Melt-blown cloth uses polypropylene resin as the main raw material, and its specific gravity is even lower than that of cotton. It is fluffy and soft, porous, and has good air permeability. It is a key material for medical masks. In masks, after the melt-blown cloth absorbs a large number of bacteria and viruses, the germs still survive in the melt-blown cloth. The adsorption content of the melt-blown cloth is limited. Under high demand, the working life of the melt-blown cloth is particularly important, and in During the daily process of taking off the mask, it is easy to release the germs in the melt-blown cloth, causing secondary pollution. How to improve the adsorption pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L27/18C08L23/06C08K13/02C08K3/08C08K3/22C08K5/14C08K5/5435D06M10/00D01F6/46D01F1/10D04H1/4291D04H3/007
CPCC08L23/12D06M10/00D01F6/46D01F1/10D01F1/103D04H1/4291D04H3/007C08L2203/12C08L2205/03C08L2205/02C08K2201/011C08K2003/0806C08K2003/2241C08L27/18C08L23/06C08K13/02C08K3/08C08K3/22C08K5/14C08K5/5435
Inventor 谢飞孙玉梅朱旭陈启攀
Owner XUZHOU HAITIAN PETROCHEM
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