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Preparation method of melt-blown electret polymer filter material

A technology of filter material and electret, which is applied in the field of preparation of melt-blown electret polymer filter material, can solve the problems that the melt-blown cloth filter material cannot inhibit bacteria for a long time and the distribution of filtration effect is uneven, and achieve excellent thermal stability , high-efficiency filtration performance, high-efficiency antibacterial performance

Active Publication Date: 2021-01-29
浙江派菲特新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above deficiencies in the prior art, an object of the present invention is to provide a method for preparing a melt-blown electret polymer filter material to solve the problem that the existing melt-blown cloth filter material cannot inhibit bacteria for a long time and the distribution of the filtering effect is not good. equality problem

Method used

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  • Preparation method of melt-blown electret polymer filter material
  • Preparation method of melt-blown electret polymer filter material
  • Preparation method of melt-blown electret polymer filter material

Examples

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Effect test

Embodiment 1

[0034] The preparation method of the melt blown electret polymer filter material of the present embodiment, it may further comprise the steps:

[0035] S1: In parts by weight, weigh 100 parts of polypropylene, 0.1 part of dicumyl peroxide, 15 parts of 6-allyl-1,3,5-triazine-2,4-diamine and 10 parts of pH The bacterial agent is added into the high-speed mixer, and after high-speed stirring and mixing, the modification reaction is extruded through the extruder to obtain the modified polypropylene masterbatch.

[0036] S2: Mix the modified polypropylene masterbatch, polytetrafluoroethylene masterbatch, polypropylene masterbatch and polypropylene grafted maleic anhydride obtained in step S1 evenly, after heating and melting, the melt is sprayed out through a spinneret; The mass ratio of the modified polypropylene masterbatch, polytetrafluoroethylene masterbatch, polypropylene masterbatch and polypropylene grafted maleic anhydride is 15:3:100:2.

[0037] S3: Use high-temperature p...

Embodiment 2

[0048] The preparation method of the melt blown electret polymer filter material of the present embodiment, it may further comprise the steps:

[0049] S1: In parts by weight, weigh 100 parts of polypropylene, 0.3 parts of di-tert-amyl peroxide, 20 parts of 4,6-di(allyloxy)-N-butyl-1,3,5-tri Add oxazin-2-amine and 15 parts of antibacterial agent into a high-speed mixer, stir and mix evenly at a high speed, and then carry out modification reaction extrusion through an extruder to obtain a modified polypropylene masterbatch.

[0050] S2: Mix the modified polypropylene masterbatch, polytetrafluoroethylene masterbatch, polypropylene masterbatch and polypropylene grafted maleic anhydride obtained in step S1 evenly, after heating and melting, the melt is sprayed out through a spinneret; The mass ratio of the modified polypropylene masterbatch, polytetrafluoroethylene masterbatch, polypropylene masterbatch and polypropylene grafted maleic anhydride is 20:6:100:5.

[0051] S3: Use hi...

Embodiment 3

[0059] The preparation method of the melt blown electret polymer filter material of the present embodiment, it may further comprise the steps:

[0060] S1: In parts by weight, weigh 100 parts of polypropylene, 0.5 parts of tert-butyl peroxyisobutyrate, and 25 parts of 4,6-diallyloxy-N-octyl-1,3,5-triazine -2-amine and 20 parts of bacteriostatic agent are added into a high-speed mixer, and after high-speed stirring and mixing, the modification reaction is carried out through an extruder to obtain a modified polypropylene masterbatch.

[0061] S2: Mix the modified polypropylene masterbatch, polytetrafluoroethylene masterbatch, polypropylene masterbatch and polypropylene grafted maleic anhydride obtained in step S1 evenly, after heating and melting, the melt is sprayed out through a spinneret; The mass ratio of the modified polypropylene masterbatch, polytetrafluoroethylene masterbatch, polypropylene masterbatch and polypropylene grafted maleic anhydride is 25:8:100:10.

[0062]...

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Abstract

The invention discloses a preparation method of a melt-blown electret polymer filter material, which comprises the following steps: S1, weighing a certain amount of polypropylene, an organic peroxide,a triazine derivative and a bacteriostatic agent, uniformly mixing, and carrying out extrusion modification reaction to obtain modified polypropylene master batch; S2, uniformly mixing the modified polypropylene master batch, polytetrafluoroethylene master batch, polypropylene master batch and polypropylene grafted maleic anhydride, heating for melting, and spraying a melt through a spinneret plate; S3, synchronously spraying and stretching the melt by taking fluidized modified nano activated carbon particles as traction airflow, and applying a magnetic field in the process, so that the concentration of the modified nano activated carbon particles is changed in a gradient manner from the center to two sides; and performing corona discharge, cooling and rolling to obtain the filter material disclosed by the invention. The filter material prepared by the invention has excellent characteristics of polypropylene and polytetrafluoroethylene materials, has efficient filtration and antibacterial properties, and meets the use requirements of melt-blown cloth and other filter materials in a long-term severe environment.

Description

technical field [0001] The invention relates to the technical field of melt-blown cloth, in particular to a method for preparing a melt-blown electret polymer filter material. Background technique [0002] As people pay more and more attention to personal health and safety, people have become more and more accustomed to wearing masks for personal protection. Masks are divided into various types according to the requirements of their use occasions, including medical masks and N95 masks. Medical masks and N95 masks are usually composed of spunbond layer, meltblown layer and spunbond layer. The conventional polypropylene meltblown cloth material used in the existing meltblown layer, the polymer material is under the action of strong external electric field and other factors. Polarized and can "permanently" maintain the polarized state, known as electret polymers. Most of the existing melt-blown cloth filter materials are prepared only from polypropylene polymers, without modi...

Claims

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Application Information

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IPC IPC(8): B01D39/08D04H1/56D04H1/541
CPCB01D39/08D04H1/56D04H1/541B01D2239/0407B01D2239/0442B01D2239/10
Inventor 叶善明林闪光金艳刘珍珠庞涛
Owner 浙江派菲特新材料科技有限公司
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