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Tourmaline electret polylactic acid melt-blown non-woven cloth and manufacture method

A technology of melt-blown nonwovens and polylactic acid, which is applied in the direction of nonwovens, textiles and papermaking, and single-component polyester rayon, which can solve the problem of reduced stability of surface charge dissipation and filtration performance, and material electret effect Poor, difficult processing and other problems, to achieve the effect of easy operation, improved filterability, and environmental friendliness

Inactive Publication Date: 2013-04-24
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the disadvantages of the polylactic acid filter material in the prior art, such as high moisture absorption, easy degradation, high viscosity, difficult processing, poor electret effect of the material, and rapid surface charge dissipation leading to a decrease in the stability of the filtration performance. A kind of tourmaline electret polylactic acid melt-blown nonwoven fabric with good filtering effect, and the preparation method of non-toxic, harmless and environment-friendly tourmaline electret melt-blown nonwoven fabric

Method used

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  • Tourmaline electret polylactic acid melt-blown non-woven cloth and manufacture method
  • Tourmaline electret polylactic acid melt-blown non-woven cloth and manufacture method
  • Tourmaline electret polylactic acid melt-blown non-woven cloth and manufacture method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Place the polylactic acid masterbatch in a vacuum drying oven, dry at 90°C for at least 8 hours, add tourmaline with a mass ratio of 1% polylactic acid content, and add a coupling agent with a mass ratio of 3% tourmaline content and account for the mass of tourmaline 1% dispersant and diluent 3 times the mass of coupling agent. The coupling agent is preferably titanate, the dispersant is preferably PE wax, and the diluent is preferably glycerol. The tourmaline-modified polylactic acid slice 1# was prepared according to the above-mentioned pre-blending and melt-blending methods, ready for use.

Embodiment 2

[0025]Place the polylactic acid masterbatch in a vacuum drying oven, dry at 90°C for at least 8 hours, add tourmaline with a mass ratio of 2% polylactic acid content, and add a coupling agent with a mass ratio of 3% tourmaline content and a mass ratio of Dispersant with 2% tourmaline content and diluent with 3 times mass of coupling agent. The coupling agent is preferably titanate, the dispersant is preferably PE wax, and the diluent is preferably glycerol. The tourmaline-modified polylactic acid chip 2# was prepared according to the above-mentioned pre-blending and melt-blending methods and was ready for use.

Embodiment 3

[0027] Place the polylactic acid masterbatch in a vacuum drying oven, dry at 90°C for at least 8 hours, add tourmaline with a mass ratio of 3% polylactic acid content, and add a coupling agent with a mass ratio of 2% tourmaline content and a mass ratio of The content of tourmaline is 3% dispersant and diluent 3 times the mass of coupling agent. The coupling agent is preferably titanate, the dispersant is preferably PE wax, and the diluent is preferably glycerol. The tourmaline-modified polylactic acid chip 3# was prepared by the above-mentioned pre-blending and melt-blending methods and was ready for use.

[0028] The raw materials mixed by the high-speed mixer are melt-blended with a twin-screw extruder. The temperature settings of each section of the twin-screw extruder are shown in Table 1.

[0029] Table 1 Temperature settings in each zone of the screw extruder

[0030]

[0031] The tourmaline-modified polylactic acid chips prepared above were used to prepare melt-bl...

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Abstract

The invention relates to tourmaline electret polylactic acid melt-blown non-woven cloth and a manufacture method. The tourmaline electret polylactic acid melt-blown non-woven cloth is manufactured through tourmaline modified polylactic acid melt-blown ultrafine fibers, wherein the diameter of the fiber ranges from 1 mu m to 10 mu m, and the tourmaline modified polylactic acid melt-blown ultrafine fiber is made of polylactic acid, tourmaline and assistant. The mass of the tourmaline is 1-3% of the mass of the polylactic acid, the assistant comprises coupling agent, dispersing agent and diluent, the mass of the coupling agent occupies 2-3% of that of the tourmaline, the mass of the dispersing agent occupies 1-3% of the mass of the tourmaline, and the mass of the diluent is three times as that of the coupling agent. The tourmaline electret polylactic acid melt-blown non-woven cloth is good in filtering effect, non-toxic, harmless and environment-friendly.

Description

technical field [0001] The invention relates to a nonwoven fabric and a preparation method thereof, in particular to a tourmaline electret polylactic acid melt-blown nonwoven fabric and a preparation method thereof. Background technique [0002] The melt-blown method is a one-step process for producing non-woven materials. It melts the thermoplastic resin pellets and draws the ejected fibers under the action of high-speed hot air to make ultra-fine fibers, and then lays the net. A nonwoven material is obtained. Melt-blown nonwoven materials have the characteristics of low fiber fineness, good uniformity of fiber web, etc., and have a fluffy structure and good filtering performance. improve. Polypropylene (PP) has good charge storage capacity due to its structural characteristics, so it has become the main raw material for melt-blown nonwovens, high polymers such as polyethylene (PE), polyester (PET) and polyamide (PA) It can also be used as its raw material. [0003] Som...

Claims

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Application Information

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IPC IPC(8): D04H1/435D04H1/728D01F6/92D01F1/10D06M10/02
Inventor 于斌韩建孙辉徐国平丁新波朱菲超
Owner ZHEJIANG SCI-TECH UNIV
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