Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of composite fiber filter material and preparation method thereof

A composite fiber and composite fiber mat technology, which is applied in the field of filter materials for industrial environmental protection and dust removal, can solve the problems of affecting filter performance and blockage of filter material pores, and achieve the effects of not easily adhering to dust, prolonging service life, and improving filter performance.

Active Publication Date: 2021-08-17
NANJING FIBERGLASS RES & DESIGN INST CO LTD +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the dust is easy to adhere to the filter material when the existing bag filter handles the dusty gas with high moisture content, which causes the pores of the filter material to be blocked and then affects the filtration performance, thereby providing A preparation method of a composite fiber filter material with high filtration efficiency and low dust accumulation and clogging inside

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of composite fiber filter material and preparation method thereof
  • A kind of composite fiber filter material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment provides a kind of composite fiber filter material, its structure is as follows figure 1 As shown, the composite fiber filter material has a five-layer structure, including an expanded polytetrafluoroethylene microporous membrane layer 1, a third non-woven fabric layer 2, a second non-woven fabric layer 3, and a woven fabric layer stacked together in sequence. Layer 4 and the first nonwoven fabric layer 5, wherein the expanded polytetrafluoroethylene microporous film layer 1 is the dust-resisting surface layer.

[0038]In this embodiment, the third nonwoven fabric layer 2 is an ultrafine aramid nonwoven fabric layer, the second nonwoven fabric layer 3 is a conventional polyimide nonwoven fabric layer, and the woven fabric layer 4 is an aramid plain weave machine The woven fabric layer, the first nonwoven fabric layer 5 is a conventional polyimide nonwoven layer. Its preparation method comprises the following steps:

[0039] (1) Preparation of the first...

Embodiment 2

[0047] This embodiment provides a composite fiber filter material, the structure of which is the same as that of the composite fiber material in Example 1. Its preparation method comprises the following steps:

[0048] (1) Preparation of the first nonwoven fabric layer 5: the polyimide fibers with a length of 7 cm and a fineness of 10 deniers are uniformly opened and carded to form a single-layer fiber web, and then multi-layered. The gram weight of stabbing is 240g / m 2 conventional polyimide fiber nonwovens;

[0049] Preparation of the woven fabric layer 4: the aramid fiber with a fineness of 6 denier is woven to form a grammage of 120g / cm 2 Aramid fiber plain woven fabric;

[0050] Preparation of the second nonwoven fabric layer 3: the polyimide fibers with a length of 7 cm and a fineness of 3 deniers are uniformly opened and carded to form a single-layer fiber web, and then formed by needle punching after multi-layer web laying. Weight is 150g / m 2 conventional polyimid...

Embodiment 3

[0056] This embodiment provides a composite fiber filter material, the structure of which is the same as that of the composite fiber material in Example 1. Its preparation method comprises the following steps:

[0057] (1) Preparation of the first nonwoven fabric layer 5: the polyimide fibers with a length of 10 cm and a fineness of 8 deniers are evenly opened and carded to form a single-layer fiber web, and then multi-layered. The gram weight of stabbing is 180g / m 2 conventional polyimide fiber nonwovens;

[0058] Preparation of the woven fabric layer 4: the sulfonamide fiber with a fineness of 4.5 denier is woven to form a grammage of 80g / cm 2 Aramid sulfone fiber plain woven fabric;

[0059] Preparation of the second nonwoven fabric layer 3: uniformly open and card the sulfonamide fibers with a length of 7 cm and a fineness of 2 deniers to form a single-layer fiber web, and then form a grammage by needle punching after multi-layer web laying 100g / m 2 Conventional polys...

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
Login to View More

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of filter materials for industrial environmental protection and dust removal, and discloses a composite fiber filter material and a preparation method thereof. The porous film is hot-pressed and laminated; the heating and curing includes the first heating and curing and the second heating and curing. The present invention also adds a second heating and curing after the first heating and curing, and performs rapid high-temperature sintering on the fiber mat after surface treatment. , so that the active ingredients in the treatment liquid are quickly agglomerated, and the mixed agglomerated particles with a secondary particle size of 3-8 μm are formed to adhere to the surface of the filter material. The particle size meets the requirements of structural hydrophobicity. The surface of the filter material has a hydrophobic property, which realizes the function of the filter material to have both chemical hydrophobicity and structural hydrophobicity. It is not easy to adhere to dust during use, and it will not block the pores, effectively improving the filtration performance of the filter material and prolonging the use of the dust collector. life.

Description

technical field [0001] The invention belongs to the technical field of filter materials for industrial environmental protection and dust removal, and in particular relates to a composite fiber filter material and a preparation method thereof. Background technique [0002] Energy is an important material basis for economic and social development and improvement of people's living standards. With the rapid development of the economy, my country's demand for energy has risen sharply, and heavy industries with serious pollution, such as smelting and power generation, have developed rapidly. Most of these industries are Coal is used as the main combustion material, which leads to serious soot pollution and poses a great threat to human life and health. my country has strict restrictions on the emission of smoke and dust, and the standards are becoming more and more stringent. The bag type dust removal has super high dust removal efficiency, and the dust removal efficiency can rea...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/16
CPCB01D39/16B01D2239/0668B01D2239/10
Inventor 赵谦费传军高政王屹郭晓蓓余佳彬徐涛尹奕玲李帅匡新波张振
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD