Super-hydrophobic melt electric spinning cloth preparing method

A super-hydrophobic, melt technology, applied in non-woven fabrics, textiles, papermaking, clothing, etc., can solve problems such as insufficient and inability to wash performance, and achieve the effects of improving air permeability, simple and easy preparation method, and low cost.

Pending Publication Date: 2020-07-17
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art. In order to improve the performance problems of materials produced in the prior art such as hydrophobicity, moisture permeability, and inability to wash, we propose a method for preparing high-strength superhydrophobic electrospun fabrics.

Method used

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  • Super-hydrophobic melt electric spinning cloth preparing method
  • Super-hydrophobic melt electric spinning cloth preparing method
  • Super-hydrophobic melt electric spinning cloth preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method for melt electrospun cloth, comprising the steps of:

[0037] Step 1: In a heated and melted container, heat 3g of PP (polypropylene) to 240°C to melt into a melt;

[0038] Step 2: Through the electrospinning equipment, the electrofluid printing form, the melt extrusion nozzle, and apply voltage to the nozzle, and print the melted PP into long and continuous PP nano fiber network to obtain melt electrospun fabric.

[0039] Among them, the voltage between the melt nozzle and the receiving surface is controlled to be 20kV, the distance between the melt nozzle and the drum is 7cm, the liquid flow rate at the melt nozzle is 50μL / min, the rotation speed of the drum is 500mm / s, and the translation speed of the drum is 10mm / s, the fiber diameter of the melt electrospun fabric is 500nm. The inclination angle of the grid in the nanofiber network is 5°-85°, that is, the angle between rows and columns is 170°-10°; the thickness of the melt electrospun fabric...

Embodiment 2

[0044] Other steps are with embodiment 1, difference is:

[0045] In step 1, the melting temperature of PP is 240°C;

[0046] In step 2, the drum rotation speed is 1000mm / s, and the fiber diameter of the melt electrospun fabric is 300nm;

[0047] The contact angle of the melt electrospun fabric obtained in step 3 is 166.4°.

[0048] contact angle as image 3 as shown in (b)

Embodiment 3

[0050] Other steps are with embodiment 1, difference is:

[0051] In step 1, the melting temperature of PP is 240°C;

[0052] In step 2, the liquid flow rate at the needle of the syringe is 20 μL / min, and the fiber diameter of the melt electrospun fabric is 300 nm;

[0053] The contact angle of the melt electrospun fabric obtained in step 3 is 163.7°.

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Abstract

The invention discloses a super-hydrophobic melt electric spinning cloth preparing method. The method comprises the following steps that thermoplastic materials are heated into a melt state, then, static spinning equipment is used, the obtained melt-state thermoplastic materials are injected into a roller rotating and transversely moving at the same time through a needle head, a net-shaped nano fiber network is formed, and super-hydrophobic melt electric spinning cloth is obtained. The melt blowing technology, static spinning and the roller technology are combined, the roller is moved back andforth for cloth spinning so that cloth can be super hydrophobic, self-cleanliness is achieved, rubbing resistance and water vapor permeability are improved, and the super-hydrophobic melt electric spinning cloth preparing method has wide application prospects in multiple industries including masks, protective garment materials and other epidemic prevention equipment materials.

Description

technical field [0001] The invention belongs to the field of epidemic prevention and control, and in particular relates to a preparation method for processing thermoplastic materials into a superhydrophobic filter cloth by electrostatic spinning technology. The method can be used to make filter layers of face masks, filter layers of protective clothing and the like. Background technique [0002] At present, meltblown cloth is the core material of the mask as the filter layer of the mask. The high-speed hot air flow is used to draw the thin stream of polymer melt extruded from the spinneret hole of the die head, thereby forming ultra-fine fibers and collecting them on the condensation net curtain or roller, and at the same time bonding themselves to become a non-melt-blown process. Cloth is woven and this fabric is then used to make masks. [0003] Meltblown cloth mainly uses polypropylene as the main raw material, and the fiber diameter is 1-5 μm. There are many voids, fl...

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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IPC IPC(8): D04H1/4282D04H1/4291D04H1/4326D04H1/4334D04H1/74D04H1/76D04H3/005D04H3/007D04H3/009D04H3/045D04H3/07D01D5/00A41D13/11
CPCA41D13/11D01D5/0023D01D5/0076D04H1/4282D04H1/4291D04H1/4326D04H1/4334D04H1/74D04H1/76D04H3/005D04H3/007D04H3/009D04H3/045D04H3/07D10B2321/021D10B2321/022D10B2321/041D10B2321/121D10B2331/02D10B2331/30D10B2501/04D10B2505/04
Inventor徐文涛徐雯龙
OwnerNANKAI UNIV