Melt-blown fiber/nano fiber/glass fiber composite filter material and its preparation

A melt-blown fiber and glass fiber technology is applied in the field of melt-blown fiber/nanofiber/glass fiber composite filter material and its preparation, which can solve the problems of performance degradation and nanofiber functional layer structure damage, and achieve long service life and fiber. The effect of small diameter and small pore size

Active Publication Date: 2020-04-10
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem that the structure of the nanofiber functional layer is damaged and the performance is reduced due to external force in the compounding process of the existing nanofiber composite filter material, and to provide a kind of melt-blown fiber / nanofiber / glass fiber composite filter material and its preparation method

Method used

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  • Melt-blown fiber/nano fiber/glass fiber composite filter material and its preparation
  • Melt-blown fiber/nano fiber/glass fiber composite filter material and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a kind of meltblown fiber / nanofiber / glass fiber composite filter material comprises a glass fiber substrate 1, a nanofiber layer 2 and a meltblown fiber cover layer 3 arranged in sequence from bottom to top, wherein the nano The upper surface of the fiber layer 2 is provided with a fusion point formed by solvent electrostatic spraying technology, and the melt-blown fiber covering layer 3 is bonded to the nanofiber layer 2 by means of the fusion point by means of a composite method of thermal bonding.

[0036] The preparation method of described melt-blown fiber / nano fiber / glass fiber composite filter material, concrete steps are:

[0037] (1) nanofibers are deposited on the gauze substrate 1 to form a nanofiber layer 2, the specific operations are as follows:

[0038] The first step: dissolving polystyrene particles (80,000 molecular weight) in N,N-dimethylformamide, placing the solution on a magnetic stirrer and stirring for 10 hours to form ...

Embodiment 2

[0044] Such as figure 1 As shown, a kind of meltblown fiber / nanofiber / glass fiber composite filter material comprises a glass fiber substrate 1, a nanofiber layer 2 and a meltblown fiber cover layer 3 arranged in sequence from bottom to top, wherein the nanofiber The upper surface of the fiber layer 2 is provided with a fusion point formed by solvent electrostatic spraying technology, and the melt-blown fiber covering layer 3 is bonded to the nanofiber layer 2 by means of the fusion point by means of a composite method of thermal bonding.

[0045] The preparation method of described melt-blown fiber / nano fiber / glass fiber composite filter material, concrete steps are:

[0046] (1) nanofibers are deposited on the gauze substrate 1 to form a nanofiber layer 2, the specific operations are as follows:

[0047] The first step: dissolving polystyrene particles (molecular weight 100,000) in N,N-dimethylformamide, placing the solution on a magnetic stirrer and stirring for 10 hours ...

Embodiment 3

[0053] Such as figure 1 As shown, a kind of meltblown fiber / nanofiber / glass fiber composite filter material comprises a glass fiber substrate 1, a nanofiber layer 2 and a meltblown fiber cover layer 3 arranged in sequence from bottom to top, wherein the nanofiber The upper surface of the fiber layer 2 is provided with a fusion point formed by solvent electrostatic spraying technology, and the melt-blown fiber covering layer 3 is bonded to the nanofiber layer 2 by means of the fusion point by means of a composite method of thermal bonding.

[0054] The preparation method of described melt-blown fiber / nano fiber / glass fiber composite filter material, concrete steps are:

[0055] (1) nanofibers are deposited on the gauze substrate 1 to form a nanofiber layer 2, the specific operations are as follows:

[0056] The first step: dissolving polystyrene particles (molecular weight: 150,000) in N,N-dimethylformamide, placing the solution on a magnetic stirrer and stirring for 10 hours...

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Abstract

The invention provides a melt-blowing fiber / nano fiber / glass fiber composite filter material and a preparation of same. The composite filter material includes, successively from bottom to top, a glass fiber base material, a nano fiber layer and a melt-blowing fiber cover layer, wherein melt-joint points, through solvent electrostatic spraying technology, are formed on the upper surface of the nano fiber layer, so that the melt-blowing fiber cover layer is bond to the nano fiber layer by means of the melt-joint points through a hot-binding lamination method. The composite filter material has simple preparation process and low cost, is not less than 95% in filtration efficiency to particles in 0.01-10 [mu]m and is not more than 70 Pa in resistance pressure drop, is long in service life, and has great application prospect in the field of air filtration.

Description

technical field [0001] The invention belongs to the field of nanofibers, and relates to a melt-blown fiber / nanofiber / glass fiber composite filter material and a preparation method thereof, especially to form uniform fusion joints within a certain depth range on the surface of the nanofiber functional layer, thereby strengthening the nanofibers The bonding fastness between the layer and the melt-blown fiber covering protective layer, and then using the composite method of thermal bonding to form a three-layer composite structure with a certain pattern on the glass fiber substrate, nanofiber functional layer and melt-blown fiber covering layer. Background technique [0002] Nanofibers have structural characteristics such as small fiber diameter, small pore size, large specific surface area, and high porosity. Combining them with melt-blown fibers and other materials can prepare high-efficiency and low-resistance air filtration composite materials. In the actual use of the exis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/16B32B17/02B32B7/12B32B17/12B32B27/02B32B27/12B32B33/00
CPCB01D39/16B32B5/02B32B5/26B32B7/12B32B17/067B32B27/12B32B33/00B32B2250/20B32B2262/101B32B2307/724
Inventor 丁彬廖亚龙赵兴雷李玉瑶印霞俞建勇
Owner DONGHUA UNIV
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