Special organic electret master batch for melt-blown non-woven fabric applied to mask and preparation method thereof, and melt-blown non-woven fabric prepared from special organic electret master batch

A technology of melt-blown non-woven fabrics and electret, which is applied in non-woven fabrics, rayon manufacturing, textiles and papermaking, etc., and can solve problems such as small molecular weight, precipitation migration, etc.

Active Publication Date: 2020-08-21
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these electrets still have the risk of precipitation and migration due to their small molecular weight

Method used

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  • Special organic electret master batch for melt-blown non-woven fabric applied to mask and preparation method thereof, and melt-blown non-woven fabric prepared from special organic electret master batch
  • Special organic electret master batch for melt-blown non-woven fabric applied to mask and preparation method thereof, and melt-blown non-woven fabric prepared from special organic electret master batch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~9

[0048] According to the formula in Table 1, the materials of Examples 1 to 5 and 7 to 8 were mixed in a high-speed mixer, and melted and extruded through a twin-screw extruder with a length-to-diameter ratio of 40:1. The temperature of the melting section was 150-210. ℃ to obtain the special organic electret masterbatch for the meltblown non-woven fabric for masks.

[0049] Add the polytetrafluoroethylene micropowder in Example 9 to 500 mL of water containing surfactants, disperse to form an emulsion, and mix in a high-speed mixer according to the formula in Table 1, and pass through a twin-screw extruder with a length-to-diameter ratio of 40:1 Melt blending and extrusion, combined with vacuum treatment to remove water during extrusion, and the temperature in the melting section is 150-210°C to obtain special organic electret masterbatches for meltblown non-woven fabrics for masks.

[0050] According to the formula in Table 1, the materials of Example 6 were mixed in a high-speed m...

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Abstract

The invention discloses a special organic electret master batch for a melt-blown non-woven fabric applied to a mask and a preparation method thereof, and the melt-blown non-woven fabric prepared fromthe special organic electret master batch. The special organic electret master batch for the melt-blown non-woven fabric applied to the mask is prepared from the following components in percentage byweight: 80-90% of polypropylene resin, 2-10% of fluorine electret powder, 1-10% of a compatilizer and 0.05%-0.5% of a processing aid, wherein the average particle size of the fluorine electret powderis 0.05-3 [mu] m, the compatilizer is a maleic anhydride-grafted olefin copolymer/elastomer or glycidyl methacrylate grafted olefin copolymer/elastomer; and the melt index of the polypropylene resin is not lower than 1000 g/10 min, and the length-diameter ratio of a screw for preparing the organic electret master batch special for the melt-blown non-woven fabric is larger than or equal to 40: 1. According to the special organic electret master batch for the melt-blown non-woven fabric, the phenomenon that an existing electret master batch is prone to being blocked due to separation of electretpowder in the production process of the melt-blown non-woven fabric applied to masks is overcome, fluorine electret powder can be better dispersed evenly, and good electret effect is still achieved under the condition of a small adding amount.

Description

Technical field [0001] The invention relates to the field of melt-blown non-woven fabrics, in particular to organic electret masterbatch special for melt-blown non-woven fabrics for masks, a preparation method thereof, and a melt-blown non-woven fabric made. Background technique [0002] Meltblown non-woven fabric for masks is a material for preparing filter masks. Although the filtration efficiency can be improved by electret treatment, only the electret treatment of the non-woven fabric itself can improve the filtration efficiency to a limited extent. In order to achieve the desired filtering effect, electret materials or electret masterbatches are generally added to the meltblown non-woven fabric formula for masks. Electret masterbatch can be divided into inorganic electret masterbatch and organic electret masterbatch. The most common inorganic electret masterbatch is obtained by adding ultra-high melting index polypropylene as the matrix, and dispersing tourmaline powder wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L27/18C08L27/16C08L27/14C08L51/06C08L51/04C08J3/22D01F6/46D01F1/10D04H1/544D04H1/56
CPCC08J3/226D01F6/46D01F1/10D04H1/544D04H1/56C08J2323/12C08J2423/12C08J2427/18C08J2427/16C08J2427/14C08J2451/06C08J2451/04
Inventor 李力王斌王道娟杨友强杨曦程文建刘乐文杨霄云陈平绪叶南飚黄险波
Owner KINGFA SCI & TECH CO LTD
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