Environment-friendly air filtration non-woven fabric as well as production process and application thereof

A technology of air filtration and production technology, which is applied in the fields of filtration and separation, textiles, papermaking, and non-woven fabrics. It can solve the problems of low charge stability of melt-blown polypropylene fibers and difficulty in maintaining high-efficiency and low-resistance performance, so as to improve electret Chemical effect, improved storage stability, improved killing activity

Active Publication Date: 2021-05-28
DONGGUAN CHUNXIA IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, after direct electret treatment of melt-blown polypropylene material, the capture of submicron particles is achieved through the Coulomb force of the charged fi

Method used

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  • Environment-friendly air filtration non-woven fabric as well as production process and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037]The electoform particles consist of polypropylene, a small graphene nanofina, an antioxidant, a compatible agent, a nucleating agent; the preparation method of the electoforming master comprises the steps of:

[0038]A1, 5 g of magnesium oxide microcrystalline powder and placed in alumina ceramic boat, the ceramic boat contained in the magnesium oxide microcrystalline powder into the central portion of the tube furnace, the tube furnace, and the air in argon is replaced. The adjustment of argon flow is constant at 100-120 ml / min, and the tube furnace gradually heats up to 920-1000 ° C, the temperature rise rate is 8-10 ° C / min, and the temperature is lift to the target temperature after holding 10-30 min, and the atmosphere is cut into methane and Hybrid gas of hydrogen, the mixed gas has a constant flow rate of 60-72 ml / min, and begins to deposit a small layer graphene in the magnesium oxide crystal surface, deposition time 90-100 min, and the atmosphere is switched to arg...

Example Embodiment

[0056]Example 1

[0057]An environmentally friendly air filtration non-woven fabric production process, including the following steps:

[0058]S1, mixed polypropylene, electoform, and polymer residential body, prepared mixture; wherein the polypropylene, the electret parent and the polymer electret weight ratio is 100. : 6: 0.5;

[0059]S2, the mixture is fed into the screw extruder, and the screw extruder is melt extruded to form a melt, and the five heating regions of the screw extruder are set to 160 ° C, 180 ° C, respectively. 200 ° C, 220 ° C, 225 ° C;

[0060]S3, the melt thermostatic insulation is in the pipe, and after metering the meter, the fiber is discharged through the spinneret, which is draped by a thermostatic thermal air, forming a melting in the web;

[0061]S4, the meltblown cloth made by S3 is sequentially performed in constant temperature infrared radiation heat treatment, and the air filter nonwoven fabric is obtained after 5-6 million high-voltage residential treatment and c...

Example Embodiment

[0070]Example 2

[0071]An environmentally friendly air filtration non-woven fabric production process, including the following steps:

[0072]S1, mixed polypropylene, electoform, and polymer residential body, prepared mixture; wherein the polypropylene, the electret parent and the polymer electret weight ratio is 100. : 6: 0.5;

[0073]S2, the mixture is fed into the screw extruder, and the screw extruder is melt extruded to form a melt, and the five heating regions of the screw extruder are set to 160 ° C, 180 ° C, respectively. 200 ° C, 220 ° C, 225 ° C;

[0074]S3, the melt thermostatic insulation is in the pipe, and after a meter measurement, the fiber is discharged through the spinneret, the fiber is draped, and the thermostatic thermal air is draped, and a meltblown cloth is formed on the web. The surface modification treatment of the melting cloth is specifically:

[0075]S4, under the protective atmosphere, 0.65 g of dodecyl trikarcarbonate and 20 ml of dimethyl methacrylic acid were adde...

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Abstract

The invention provides a production process of an environment-friendly air filtration non-woven fabric, and belongs to the technical field of air filtration. Polypropylene, electret master batch and high-molecular electret are uniformly mixed, the prepared mixture is fed into a screw extruder, melt extrusion is performed through the screw extruder to form a melt, the melt is sprayed out through a spinneret plate to form fibers, the fibers are subjected to constant-temperature and constant-pressure hot air drafting, melt-blown cloth is formed on a web curtain, then infrared radiation heat treatment, high-pressure electret treatment and cooling treatment are sequentially conducted, then rolling is conducted, and the air filtration non-woven fabric is obtained, wherein electret master batches are composed of polypropylene, few-layer graphene nanosheets, an antioxidant, a compatilizer and a nucleating agent; the few-layer graphene nanosheet is prepared by taking magnesium oxide microcrystals with a face-centered cubic structure as a substrate and a template through a chemical vapor deposition method; and the electret master batch improves the electret degree of fibers, improves the storage stability of charges and further improves the filtering performance.

Description

technical field [0001] The invention relates to the technical field of air filtration, in particular to an environment-friendly air filtration non-woven fabric and its production process and application. Background technique [0002] Existing studies have shown that particulate matter caused by pollution in the air, especially those with an aerodynamic equivalent of 2.5 microns or less, has a small particle size and is rich in toxic and harmful substances. These particles can stay in the air for a long time and are easily destroyed. People absorb it into the body and cause respiratory diseases, lung injury, cancer, cardiovascular disease, reproductive system, fetal development and other diseases. [0003] Commonly used fiber filter materials mainly rely on Brownian diffusion, interception, inertial collision, and direct interception to catch dust. The electrostatic adsorption between filter materials and particles is very small, and the filtration efficiency of small particl...

Claims

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Application Information

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IPC IPC(8): D04H1/56D04H1/4291D01F6/46D01F1/10D06M10/02D06M10/00D06M13/328D06M15/05D06M15/263B01D39/08D06M101/20
CPCB01D39/08D01F1/10D01F6/46D04H1/4291D04H1/56D06M10/001D06M10/025D06M13/328D06M15/05D06M15/263D06M2101/20D06M2200/50
Inventor 张春节
Owner DONGGUAN CHUNXIA IND CO LTD
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