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Efficient filter material and preparation method thereof

A high-efficiency filtration and fiber material technology, applied in filtration separation, membrane filter, separation method, etc., can solve the problems of shortened service life of filter materials, poor physical properties of filter materials, easy to reach the adsorption limit, etc., to reduce filter resistance, Good filtration efficiency and air permeability, easy to operate

Inactive Publication Date: 2017-03-22
DSP TECH DEV WENZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the physical properties of the filter material prepared by this patent are poor, and it is easy to reach the adsorption limit, resulting in a shortened service life of the filter material

Method used

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  • Efficient filter material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0032] A high-efficiency filter material, the high-efficiency filter material is composed of a base cloth layer I, an electrospinning layer, a synthetic fiber layer, and a base cloth layer II;

[0033] Wherein the base fabric layer I is made of polyethylene fiber material at a temperature of 190°C at the die head, a stretching hot air temperature of 160°C, and a hot air pressure of 6MPa for extrusion and melting. Under the condition of a receiving distance of 14cm, Prepared by melt blown spinning; the grammage of the prepared base cloth layer I is 50g / m 2 , the thickness is 0.5mm, the fiber diameter is 1.0μm, and the air permeability of the material is 60μm / Pa·s;

[0034] The electrospinning layer is to add the polytetrafluoroethylene fiber material into the chloroacetic acid solution with a mass fraction of 90%, and stir it for 16h under the magnetic stirring at a speed of 400r / min to obtain an electrospinning solution with a mass fraction of 18%. Under the conditions of inj...

Embodiment 2

[0038] A high-efficiency filter material, the high-efficiency filter material is composed of a base cloth layer I, an electrospinning layer, a synthetic fiber layer, and a base cloth layer II;

[0039] Wherein the base fabric layer I is made of polypropylene fiber material at a die temperature of 220°C, a stretching hot air temperature of 185°C, and a hot air pressure of 8MPa for extrusion and melting. Under the condition of a receiving distance of 20cm, Prepared by melt blown spinning; the grammage of the prepared base cloth layer I is 70g / m 2 , the thickness is 1.0mm, the fiber diameter is 3.0μm, and the air permeability of the material is 75μm / Pa·s;

[0040] The electrospinning layer is made by adding polyacetate fiber material into the chloroacetic acid solution with a mass fraction of 100%, and stirring for 48 hours at a magnetic stirring speed of 650r / min to obtain an electrospinning solution with a mass fraction of 25%. The diameter of the injection needle is 0.2mm, th...

Embodiment 3

[0044] A high-efficiency filter material, the high-efficiency filter material is composed of a base cloth layer I, an electrospinning layer, a synthetic fiber layer, and a base cloth layer II;

[0045] Among them, the base fabric layer I is extruded and melted by polypropylene chloride fiber material at a die temperature of 205°C, a stretching hot air temperature of 172°C, and a hot air pressure of 7MPa. Under the condition of a receiving distance of 17cm , Carry out melt-blown spinning and prepare; The base cloth layer 1 gram weight that makes is 60g / m 2 , the thickness is 0.75mm, the fiber diameter is 2.0μm, and the air permeability of the material is 67μm / Pa·s;

[0046] The electrospinning layer is made of polyimide fiber material and is added to the chloroacetic acid solution with a mass fraction of 95%, under the magnetic stirring at a rotational speed of 475r / min, stirred for 32h to obtain an electrospinning solution with a mass fraction of 22%, Under the conditions of ...

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Abstract

The invention discloses an efficient filter material and a preparation method thereof. The efficient filter material is formed by compositing a base cloth layer I, an electrostatic spinning layer, a synthetic fiber layer and a base cloth layer II. The base cloth layer I is prepared from any of polyethylene fibers, polypropylene fibers and polyallyl chloride fibers. The electrostatic spinning layer is prepared from any of polytetrafluoroethylene fibers, polyacetate fibers and polyimide fibers. The synthetic fiber layer is prepared from any one or more of polyester fibers, polyamide fibers, polyvinyl alcohol fibers, polyacrylonitrile fibers and copper ammonia fibers. The base cloth layer II is prepared from any of polyethylene fibers, polypropylene fibers, polyallyl chloride fibers and triacetate fibers. The preparation method comprises the steps of compositing of all the layers of materials, electret treatment and thermosetting treatment. The filter material prepared through the method is good in filter efficiency and air permeability, low in filtration resistance and long in service life; the preparation method is easy to operate; and the efficient filter material can be produced massively.

Description

technical field [0001] The invention relates to the field of filter materials for gaseous fluids, in particular to a high-efficiency filter material and a preparation method thereof. Background technique [0002] As the problem of air pollution becomes more and more severe, the demand for gaseous fluid filter devices is increasing. As the core component of gaseous fluid filter devices, gaseous fluid filter materials are also being studied more and more. The market for filter materials for micro-nano-scale pollutant particles Demand is increasing. [0003] Due to its good filtration efficiency, non-woven filter materials have become good raw materials for gaseous fluid filter materials. At present, they are mainly prepared by acupuncture method, but ordinary non-woven filter materials have no obvious filtering effect on particles below 1 μm, and in During the dust removal process, the thickness of the dust layer of the filter material increases with time, the filter resistan...

Claims

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Application Information

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IPC IPC(8): B01D39/16
CPCB01D39/16B01D39/1607B01D2239/0216B01D2239/10
Inventor 陈海燕何秀娟
Owner DSP TECH DEV WENZHOU CO LTD
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