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Antistatic regenerated polyester composite air filtering material and preparation method thereof

An air filter material and recycled polyester technology, which is applied in the manufacture of conductive/antistatic filaments, filtration separation, membrane filters, etc., can solve the problems of small porosity, high cost, and poor strength

Inactive Publication Date: 2020-09-08
青岛起初智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the filter material prepared by this method has antistatic effect, it has the disadvantages of poor strength, small porosity and high cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The invention provides a preparation method of an antistatic regenerated polyester composite air filter material, comprising the following steps:

[0022] (1) The graphene powder and the polyamide master batch are initially mixed and twin-screw blended, extruded and granulated in turn to obtain the graphene / polyamide blended master batch;

[0023] (2) twin-screw blending and extruding granulation of the graphene / polyamide blending masterbatch and regenerated polyester masterbatch to obtain graphene / polyamide / regenerated polyester blending masterbatch;

[0024] (3) melt-spinning the graphene / polyamide / regenerated polyester blend masterbatch to obtain mixed fibers;

[0025] (4) heat-treating a part of the mixed fiber to obtain bulked yarn short fiber; weaving the yarn into plain weave fabric after spinning the other part;

[0026] The bulky yarn staple fiber is air-laid to obtain a bulky yarn staple fiber web; the bulky yarn staple fiber web is fixed on the surface of a ...

Embodiment 1

[0036] The graphene powder (zinc oxide doped graphene) with a particle size of 2 μm and a polyamide 6 master batch (particle size of 2 mm) are placed in an internal mixer according to a mass ratio of 1:4, and the mixing temperature is 230°C for 10min; then put the initial mixture into a twin-screw extruder for blending and granulation, the blending temperature is 235°C, and the time is 15min to obtain a graphene / polyamide blend masterbatch with a particle size of 2mm ;

[0037] The graphene / polyamide blend masterbatch and bottle flakes recycled polyester masterbatch (particle size 1mm) were put into a twin-screw extruder in a mass ratio of 1:1 for blending and granulation. The blending temperature was 240°C, and the time For 20min, graphene / polyamide / recycled polyester blend masterbatch was obtained, and the particle size was 2mm;

[0038] The graphene / polyamide / regenerated polyester blend masterbatch was melt-spun through a twin-screw spinning machine, the spinning temperatu...

Embodiment 2

[0043] The graphene powder (porous graphene) with a particle size of 3 μm is placed in an internal mixer according to the mass ratio of 1:3 and polyamide 66 (with a particle size of 5 mm), and the mixing temperature is 270 ° C and the time is 5min; then put the initial mixture into the twin-screw extruder for blending and granulation, the blending temperature is 270°C, and the time is 10min to obtain graphene / polyamide blend masterbatch, with a particle size of 5mm;

[0044] The graphene / polyamide blend masterbatch and bottle flake recycled polyester masterbatch (particle size 3mm) were put into a twin-screw extruder at a mass ratio of 1:1 for blending and granulation. The blending temperature was 230°C, and the time For 15min, graphene / polyamide / recycled polyester blend masterbatch was obtained, and the particle size was 5mm;

[0045] The graphene / polyamide / regenerated polyester blend masterbatch was melt-spun through a twin-screw spinning machine, the spinning temperature wa...

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Abstract

The invention provides an antistatic regenerated polyester composite air filtering material and a preparation method thereof, and relates to the technical field of filtering materials. The preparationmethod comprises the following steps: sequentially carrying out primary mixing and twin-screw blending on graphene powder and polyamide master batch, and carrying out extrusion granulation; carryingout twin-screw blending on the obtained graphene / polyamide blended master batch and regenerated polyester master batch, and carrying out extrusion granulation to obtain graphene / polyamide / regeneratedpolyester blended master batch; carrying out melt spinning on the graphene / polyamide / regenerated polyester blended master batch to obtain a mixed fiber; carrying out heat treatment on one part of themixed fibers to obtain bulked yarn staple fibers; weaving the other part of the mixed fibers into plain weave fabric; performing air laying on the bulked yarn staple fibers to obtain a bulked yarn staple fiber net; compounding the bulked yarn staple fiber net with plain weave fabric by adopting a spunlace method to obtain the filtering material. The filtering material prepared by adopting the method d not only has a good antistatic effect, but also is high in strength, large in porosity and low in cost.

Description

technical field [0001] The invention relates to the technical field of filter materials, in particular to an antistatic regenerated polyester composite air filter material and a preparation method thereof. Background technique [0002] As a filter material, polyester fiber is widely used in the filtration of flour dust, chemical dust, and coal dust. As a filter material for flour dust, chemical dust, and coal dust, the most important performance is antistatic and strong. Existing antistatic polyester fiber filter materials, such as antistatic precipitator filter bags, are usually prepared by directly incorporating conductive fibers into the warp yarns of the base fabric or directly mixing conductive fibers into chemical fibers during the production of needle felts. fiber or conductive material to achieve antistatic effect. Although the filter material prepared by this method has an antistatic effect, it has the disadvantages of poor strength, small porosity and high cost. ...

Claims

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Application Information

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IPC IPC(8): B01D39/08D03D15/00D02G3/24D04H1/732D01F8/12D01F8/14D01F1/09D06M17/00B32B27/02B32B27/12B32B27/18B32B27/36B32B27/34B32B5/06D03D15/283D03D15/292D03D15/533
CPCB01D39/08D03D15/00D02G3/24D04H1/732D01F8/12D01F8/14D01F1/09D06M17/00B32B5/024B32B5/028B32B5/022B32B5/26B32B5/06B01D2239/10B32B2262/0284B32B2262/0261B32B2262/14B32B2307/21B32B2307/724
Inventor 马勇赵健苏红刚韩鹏
Owner 青岛起初智能科技有限公司