Processing method of water electret melt-blown fabric

A processing method and technology of melt-blown cloth, which are applied in the directions of non-woven cloth, single-component polyolefin rayon, chemical characteristics of fibers, etc., can solve the problem of reduced filtration efficiency, low filtration efficiency, and fast falling speed of melt-blown cloth materials. To achieve the effect of enhancing the ability to release negative ions and store charges, improve filtration performance, and enhance filtration performance

Pending Publication Date: 2021-09-03
上海盈兹无纺布有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Under normal temperature conditions, polypropylene electret materials have good charge storage stability, but when the sample is in a high-humidity environment, due to the polar groups in the water molecules, the compensation effect of the special-shaped particles in the atmosphere on the charge on the fiber , resulting in a large loss of charge, the charge decreases with the increase of humidity, and the rate of decline becomes faster and faster, resulting in a decrease in filtration efficiency
[0004] In view of the related technologies mentioned above, the inventor believes that the filtration efficiency of the melt-blown cloth material is reduced after being exposed to a high-humidity environment, which needs to be further improved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Processing method of water electret melt-blown fabric
  • Processing method of water electret melt-blown fabric
  • Processing method of water electret melt-blown fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A processing method of water electret meltblown cloth, comprising the following steps:

[0043] Step 1) Prepare modified polypropylene melt-blown cloth:

[0044] Step 1-1) Add 85kg of polypropylene, 3kg of soluble polytetrafluoroethylene, 3kg of nano-titanium dioxide, 5kg of nano-silicon dioxide, and 1kg of nano-alumina into the mixer, and turn on the speed of 300r / min. Mix for 10min to obtain the mixture;

[0045] Step 1-2) Add 0.1kg of antioxidant and 0.1kg of additives, and put them together with the mixture into a twin-screw extruder at a speed of 100kg / h and a temperature of 170°C in each zone for melt blending and extrusion. Convergence, the screw speed is 15rpm, stretched under the airflow of 240°C, and cooled to room temperature to obtain a modified polypropylene melt-blown cloth;

[0046] In this embodiment, the antioxidant is triethyl phosphite; the auxiliary agent is an antibacterial agent, specifically polyhexamethylene biguanide hydrochloride,

[0047] S...

Embodiment 2

[0055] Compared with Example 1, the difference is only in:

[0056] In step 1-1), the addition of polypropylene is 95kg, the addition of soluble polytetrafluoroethylene is 5kg, the addition of nano-titanium dioxide is 5kg, the addition of nano-silicon dioxide is 8kg, the addition of nano-alumina The amount added is 3kg;

[0057] In step 1-2), the addition amount of antioxidant is 1 kg, and the addition amount of auxiliary agent is 1 kg.

Embodiment 3

[0059] Compared with Example 1, the difference is only in:

[0060] In step 1-1), the addition of polypropylene is 90kg, the addition of soluble polytetrafluoroethylene is 4kg, the addition of nano-titanium dioxide is 4kg, the addition of nano-silicon dioxide is 6kg, the addition of nano-alumina The amount added is 2kg;

[0061] In step 1-2), the addition amount of antioxidant is 0.5kg, and the addition amount of auxiliary agent is 0.5kg.

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Abstract

The invention relates to the technical field of melt-blown fabric processing, and particularly discloses a processing method of water electret melt-blown fabric. The processing method of the water electret melt-blown fabric comprises the following steps of 1) preparing modified polypropylene melt-blown fabric: mixing polypropylene, soluble polytetrafluoroethylene, nano titanium dioxide, nano silicon dioxide and nano aluminum oxide to obtain a mixture, adding an antioxidant and an auxiliary agent in the step 1-2), blending with the mixture, melting, extruding, converging, stretching and cooling to obtain the modified polypropylene melt-blown fabric; 2) preparation of pure water, 3) electret process and 4) drying process, and obtaining the water electret melt-blown fabric. The water electret melt-blown fabric has better filtering performance and meanwhile has the advantages of being relatively good in moisture resistance and high temperature resistance.

Description

technical field [0001] This application relates to the technical field of melt blown cloth processing, more specifically, it relates to a processing method of water electret melt blown cloth. Background technique [0002] The water electret technology originated from 3M in the United States. The water electret has the characteristics of high efficiency and low resistance. The water electret melt-blown cloth uses a high-pressure water pump to transport the prepared pure water to the spunlace device at high pressure. The cloth is sprayed, and the two rub to generate static electricity; the water electret meltblown cloth shows that the static electricity is saturated. Water electret melt-blown cloth can effectively solve the problem of improving the electro-electret filtration efficiency of melt-blown cloth in the mask industry and reducing it after storage. [0003] Under normal temperature conditions, polypropylene electret materials have good charge storage stability, but w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/56D04H1/544D01F6/46D01F1/10D06M11/05D06M101/20
CPCD04H1/56D04H1/544D01F6/46D01F1/10D06M11/05D06M2101/20
Inventor 胡俊杰
Owner 上海盈兹无纺布有限公司
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