A kind of melt-blown polypropylene material and its preparation method and application

A melt-blown polypropylene and polypropylene technology is applied in the field of melt-blown polypropylene materials and their preparation, which can solve the problem that masks cannot block droplet bacteria aerogel, masks are difficult to fit on the wearer's face, and melt-blown nonwovens Cloth feels hard and other problems, to achieve the effect of improving air permeability, easy to fully stretch, and delicate hand feeling

CN111548566BActive Publication Date: 2020-09-29JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-09-29

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Abstract

The invention discloses a melt-blown polypropylene material and its preparation method and application, which consist of the following components: 65-80 parts of melt-blown polypropylene, 20-35 parts of low-isotactic polypropylene, and 2-2 parts of stearate 3 copies. The invention blends low-isotactic polypropylene LMPP with melt-blown polypropylene, which can effectively improve the handle of the melt-blown non-woven fabric, and the prepared melt-blown non-woven fabric has a soft feel, and has the advantages of high strength and high toughness. , At the same time, it can improve the particle filtration efficiency and air permeability of melt-blown non-woven fabrics. This material has broad application prospects in the preparation of high-filtration, low-resistance female / child masks that require a perfect fit for the face.
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Description

technical field

[0001] The invention belongs to the field of polymer materials, and in particular relates to a melt-blown polypropylene material and a preparation method and application thereof. Background technique

[0002] Melt-blown non-woven fabric is the key filter material in disposable medical surgical masks, medical N95 masks and other products, while melt-blown non-woven fabrics mainly use polypropylene as raw material, after feeding-melt extrusion-fiber formation-fiber cooling- It is prepared by processes such as netting-reinforcement into cloth. The diameter of the fibers formed by melt-blown can reach 1-5 microns, with many voids, fluffy structure, and good wrinkle resistance. These ultra-fine fibers with unique capillary structure increase the number and surface area of ​​fibers per unit area, thus making melt-blown nonwovens Cloth has excellent filterability, shielding, heat insulation and oil absorption. It can be used in air and liquid filter materials, iso...

Examples

Embodiment and comparative example

[0043] According to the ratio in Table 1, after weighing each component in proportion, mix each component uniformly through a high-speed mixer, and then melt and extrude through a twin-screw extruder at 160~180°C, granulate, and dry Obtain melt-blown polypropylene material;