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Magnetic ferroferric oxide polylactic acid melt-blowing non-woven material and preparation method

A technology of ferric oxide polylactic acid and non-woven materials, applied in the direction of single-component polyester rayon, etc., can solve the problems of waste environmental pollution, disappearance, poor electret durability, etc., and achieves a simple preparation method and improved Filterable, environmentally friendly effect

Pending Publication Date: 2018-06-15
HANGZHOU CHANGGANG PAPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing electret melt-blown nonwovens have the disadvantage of poor charge storage performance, especially in the environment of high temperature or high humidity, the charge will soon decay or even disappear, and the durability of electret is poor, which is very large. Affect the service life of the product to a certain extent
[0005] At present, the widely used raw materials in the melt-blown nonwoven process are petroleum-based materials such as polypropylene (PP), polyethylene terephthalate (PET), and petroleum will be increasingly depleted and non-renewable. Most of the woven fabrics are disposable products. A large number of non-woven fabrics made of these petroleum-based materials are not degradable, and their waste will cause environmental pollution.

Method used

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  • Magnetic ferroferric oxide polylactic acid melt-blowing non-woven material and preparation method
  • Magnetic ferroferric oxide polylactic acid melt-blowing non-woven material and preparation method
  • Magnetic ferroferric oxide polylactic acid melt-blowing non-woven material and preparation method

Examples

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Effect test

Embodiment 1

[0027] see image 3 .

[0028] This embodiment is a magnetic ferroferric oxide polylactic acid melt-blown nonwoven material, including a layered magnetic composite layer, the magnetic composite layer is formed by intertwining magnetically degradable fibers 1, and air holes are formed between the magnetically degradable fibers 1, and the magnetically degradable Fiber 1 has a fiber diameter of 1-10 μm.

[0029] This embodiment also provides a method for preparing a magnetic ferroferric oxide polylactic acid melt-blown nonwoven material, including the following steps: Step ①: preparation of a magnetic triiron tetroxide polylactic acid composite chip, including pre-blending and melt blending.

[0030] Pre-blending: Dry the polylactic acid masterbatch and ferric oxide powder in a drying oven at 80°C for 12h and 3h respectively in proportion, put the dried ferric oxide powder into a high-speed mixer for pre-blending Stir for 5 minutes, then add additives in proportion and stir for...

Embodiment 2

[0045] This embodiment is a magnetic ferroferric oxide polylactic acid melt-blown nonwoven material, including a layered magnetic composite layer, the magnetic composite layer is formed by intertwining magnetically degradable fibers 1, and air holes are formed between the magnetically degradable fibers 1, and the magnetically degradable Fiber 1 has a fiber diameter of 1-10 μm.

[0046] The present embodiment also provides the preparation method of magnetic triiron tetroxide polylactic acid melt blown nonwoven material, comprises the steps:

[0047] Step ①: Preparation of magnetic triiron tetroxide-polylactic acid composite chips, including pre-blending and melt-blending.

[0048] Pre-blending: Dry the polylactic acid masterbatch and ferric oxide powder in a drying oven at 80°C for 12h and 3h respectively in proportion, put the dried ferric oxide powder into a high-speed mixer for pre-blending Stir for 5 minutes, then add additives in proportion and stir for 15 minutes to infi...

Embodiment 3

[0059] see Figure 4 .

[0060] This embodiment is a magnetic ferroferric oxide polylactic acid melt-blown nonwoven material, including a layered magnetic composite layer, the magnetic composite layer is formed by intertwining magnetically degradable fibers 1, and air holes are formed between the magnetically degradable fibers 1, and the magnetically degradable Fiber 1 has a fiber diameter of 1-10 μm.

[0061] The present embodiment also provides the preparation method of magnetic triiron tetroxide polylactic acid melt blown nonwoven material, comprises the steps:

[0062] Step ①: Preparation of magnetic triiron tetroxide-polylactic acid composite chips, including pre-blending and melt-blending.

[0063] Pre-blending: Dry the polylactic acid masterbatch and ferric oxide powder in a drying oven at 80°C for 12h and 3h respectively in proportion, put the dried ferric oxide powder into a high-speed mixer for pre-blending Stir for 5 minutes, then add additives in proportion and ...

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Abstract

The invention relates to a magnetic ferroferric oxide polylactic acid melt-blowing non-woven material and a preparation method. The material is characterized by comprising a layered magnetic compositelayer, the magnetic composite layer is formed by winding magnetic degradation fibers, air holes are formed among the magnetic degradation fibers, and the fiber diameter of the magnetic degradation fibers is 1-10 microns. The preparation method is simple and easy to operate; used raw materials can be completely biodegradable, non-toxic, non-harmful and environmentally friendly; the filterablenessof melt-blowing non-woven fabric can be effectively improved, and when 3wt% of ferroferric oxide is added, the efficiency of filtering 0.22-0.30 micron of aerogel reaches 65% or above.

Description

technical field [0001] The invention relates to a nonwoven fabric and a preparation method thereof, in particular to a magnetic triiron tetroxide polylactic acid melt-blown nonwoven material and a preparation method thereof. Background technique [0002] The meltblown method is a one-step process for producing nonwoven materials, which has the characteristics of high production efficiency, simple operation and high economic benefits. It melts and extrudes thermoplastic resin pellets, and draws the jetted fibers under the action of high-speed hot air to make superfine fibers. It relies on the thermal bonding of the fibers themselves to obtain non-woven materials after laying the net. Melt-blown nonwovens are widely used in air filtration and medical care because of their small fiber diameter, large specific surface area, small pores and high porosity, and have great application prospects and markets. [0003] In order to improve the air filtration efficiency of melt-blown no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/435D01F6/92D01F1/10
CPCD01F1/10D01F6/92D04H1/435
Inventor 孙利忠王轩荣于斌郭玉海
Owner HANGZHOU CHANGGANG PAPER IND
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