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PTFE (polytetrafluoroethylene) membrane coated glass fiber composite needled felt filtration material and preparation method thereof

A technology of glass fiber composite and PTFE, which is applied in the field of filter materials, can solve problems such as broken needles and potential safety hazards of equipment, and achieve the effects of improving cohesion, ensuring high temperature resistance and antistatic performance, and improving folding resistance

Active Publication Date: 2017-11-03
山东兴国新力环保科技股份有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Metal fiber is also useful in other industries. Its resistance value is good, but it is not easy to comb and the needle breaks more seriously after acupuncture, which will cause hidden dangers to equipment safety.

Method used

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  • PTFE (polytetrafluoroethylene) membrane coated glass fiber composite needled felt filtration material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment

[0028] 1) Selection and preparation of raw materials

[0029]1.1: Select aramid conductive fiber with a fineness of 1-2.22Dtex×51mm, polyimide fiber with a size of 0.89-2.22Dtex×51mm, and glass fiber with 80 counts (5.5-6μm) chopped strands for mixing. The mixing ratio is shown in Table 1:

[0030] Table 1 The weight ratio (%) of each fiber in the composite felt

[0031] ;

[0032] 1.2: Temperature and humidity control of fiber batching and carding and needling processing areas

[0033] The entire production workshop is operated in a sealed glass partition space, which is effectively isolated from the outside climate and outside airflow. The workshop is equipped with humidification equipment and air internal circulation equipment. Among them, the temperature range required for fiber carding and cross-lapping is 20~35°C, and the relative humidity space is controlled at 40~75%;

[0034] The manufacturing steps of the composite felt are as follows: the fiber ratio will be c...

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Abstract

The invention belongs to the technical field of filtration materials and discloses a PTFE (polytetrafluoroethylene) membrane coated glass fiber composite needled felt filtration material and a preparation method thereof. The filtration material is characterized in that base cloth is in a three-layer structure with a middle glass fiber base cloth layer and upper and lower web layers, and each web layer is a mixed fiber layer formed by cross lapping of, by mass, 3%-10% of aramid conductive fibers, 10%-15% of polyimide fibers and 75%-87% of glass fibers. According to the preparation method, the polyimide fibers and the aramid conductive fibers are subjected to opening jointly prior to joint fiber carding along with the glass fibers. The thickness of the web layers is controlled through control of gram weight of the web layers, reasonability in matching is achieved, and full play of high temperature resistance and antistatic performances is guaranteed.

Description

technical field [0001] The invention discloses a glass fiber composite needle-punched felt-coated PTFE membrane filter material and a preparation method thereof, belonging to the technical field of filter materials. Background technique [0002] In many industrial fields, combustible, explosive and high-temperature smoke and dust will be generated. During the use process, a large amount of static electricity is likely to be generated due to the friction between dust and dust, dust and filter material. If the charge cannot be eliminated in time, it will cause fire or explosion. ACCIDENT. High-temperature smoke and dust put forward higher requirements for the use of filter materials. With the continuous development of science and technology and modern technology, people pay more and more attention to air quality and personal protection. Therefore, it is necessary to use high-temperature resistant and anti-static filter materials to treat smoke and dust. The existing anti-sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14
CPCB01D39/14B01D2239/0636B01D2239/10
Inventor 沈照旭齐贵山宋传波任会涛逯元斌
Owner 山东兴国新力环保科技股份有限公司
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