CN108499222B - Polyether-ether-ketone filter felt and preparation method thereof - Google Patents
Polyether-ether-ketone filter felt and preparation method thereof Download PDFInfo
- Publication number
- CN108499222B CN108499222B CN201810272192.XA CN201810272192A CN108499222B CN 108499222 B CN108499222 B CN 108499222B CN 201810272192 A CN201810272192 A CN 201810272192A CN 108499222 B CN108499222 B CN 108499222B
- Authority
- CN
- China
- Prior art keywords
- ether
- polyether
- ketone
- felt
- fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
- B01D2239/0208—Single-component fibres
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nonwoven Fabrics (AREA)
- Filtering Materials (AREA)
Abstract
A polyetheretherketone filter felt and a preparation method thereof belong to the technical field of filter materials. The polyether-ether-ketone filter felt is prepared by adopting polyether-ether-ketone fibers as main raw materials and adopting a non-woven felt non-woven technology; the method is characterized in that firstly, the special material for the polyetheretherketone spinning is spun into fibers by adopting a melt spinning technology, then the fibers are chopped into short fibers, and then the short fibers are carded, lapped and needled to prepare a needled pre-felt; and finally, carrying out heat setting treatment on the needled prefabricated felt, thereby obtaining the polyetheretherketone filter felt. The invention maintains the basic service performance of common fiber and has excellent properties of high temperature resistance, flame retardance, oxidation resistance, corrosion resistance and the like of the polyether-ether-ketone fiber. Therefore, the filter material prepared by taking the fiber as the raw material has longer service life and is very suitable for being used in more severe environments such as heavy chemical industry, electric power, building materials, metallurgy, waste incineration and the like which mainly consume energy.
Description
Technical Field
The invention belongs to the technical field of filter materials, and particularly relates to a polyether-ether-ketone filter felt and a preparation method thereof.
Background
In recent years, the industrial development of heavy chemical industry (electric power, building materials, metallurgy, chemical industry and the like) mainly based on resource and energy consumption in China is rapid, and the problems of environmental pollution, such as waste incineration, coal burning heat supply in winter in the north and the like, are very prominent, and the environmental pollution seriously harms human health and ecological environment. China, a big world coal-burning country, has the firepower generating capacity of about 80 percent of the total generating capacity, and the main components of air pollutants of China are dust and SO2、NOx. The environmental pollution loss caused by the method accounts for 2.6 to 3 percent of the GDP. By the end of 2016 years, the investment for environmental pollution controlOccupies 1.24 percent of the specific gravity of the GDP (9219.80 hundred million). With the improvement of living standard and health consciousness, the requirement of people on air quality is higher and higher, so that the air pollution has attracted great attention of people.
To fundamentally solve the environmental problem, sulfur oxides and nitrogen oxides generated in the coal combustion process are removed, and various components and fly ash in the flue gas are filtered. The bag type dust collector achieves the purpose of dust removal through the mechanical filtering action of the filtering material and the dust layer attached to the filtering material. However, the flue gas contains a large amount of harmful components and strongly corrosive components, and high temperature and water vapor can cause strong erosion and damage to the filter unit. Therefore, how to select a filter material capable of filtering high-efficiency and long-time smoke at high temperature is a very important topic.
The patent with publication number CN 204745880U describes a PPS fiber high-temperature resistant needled filter felt, which is composed of two major parts, i.e., a surface layer and a bottom layer, wherein the surface layer is interlaced and entangled with chopped glass fibers, the bottom layer comprises a PPS fiber net layer and a glass fiber base cloth layer, and the PPS fiber net layer and the glass fiber base cloth layer are mechanically connected together in a needling manner, so that the filter felt has the characteristics of high-temperature resistance, flame retardance, good mechanical property and low cost, but the PPS has the characteristic of being not resistant to oxidation, and the glass fibers are also easily corroded under alkaline conditions, thereby limiting the application of the filter material; patent publication No. CN 104606955A describes a method for preparing a polytetrafluoroethylene/polypropylene composite needled filter felt. The polytetrafluoroethylene/polypropylene composite needled felt is prepared by mixing and loosening polytetrafluoroethylene fibers and polypropylene fibers to prepare mixed fibers, and then carrying out carding, lapping, needling and other treatments, and has the characteristics of good physical and chemical properties, wear resistance, corrosion resistance, good moisture resistance and hydrophobicity and the like, but the polypropylene contained in the material limits the application of the polytetrafluoroethylene/polypropylene composite needled felt in the field of high-temperature filtration. Under the harsh conditions of high temperature and strong corrosivity, the conventional filter material cannot work for a long time.
The PEEK fiber is a semi-crystalline thermoplastic high-performance fiber, and because a PEEK molecular chain contains rigid benzene rings, flexible ether bonds and carbonyl groups for improving intermolecular force, the molecular chain segment structure is regular, the high-performance PEEK special fiber is used as a high-temperature-resistant filter material, is resistant to high temperature (the long-term use temperature of the PEEK fiber reaches 250 ℃), resistant to acid and alkali corrosion, good in hydrolysis resistance, high in mechanical property and good in wear resistance, can be self-cleaned, and is suitable for severe environments. Compared with the traditional filtering material, the filtering material has the advantages of high filtering efficiency, long service cycle, convenient replacement and the like. Can effectively improve the utilization efficiency of energy and resources and reduce the emission of pollutants. The method has wide application prospect in the fields of thermal power generation, heavy chemical industry, metallurgical blast furnace, cement production, waste incineration, northern coal-fired heat supply and the like.
Disclosure of Invention
The invention aims to provide a polyetheretherketone filter felt and a preparation method thereof, wherein the polyetheretherketone filter felt is prepared by adopting polyetheretherketone fibers as a main raw material and adopting a non-woven felt non-woven technology; the method is characterized in that firstly, the special material for the polyetheretherketone spinning is spun into fibers by adopting a melt spinning technology, then the fibers are chopped into short fibers, and then the short fibers are carded, lapped and needled to prepare a needled pre-felt; and finally, carrying out heat setting treatment on the needled prefabricated felt, thereby obtaining the polyetheretherketone filter felt.
The invention relates to a preparation method of a polyether-ether-ketone filter felt, which comprises the following steps:
(1) preparing the special material for spinning grade polyetheretherketone into polyetheretherketone fiber with fineness of 2-10 dtex by a melt spinning method;
(2) chopping the polyether-ether-ketone fiber prepared in the step (1) into short fibers with the length of 10-100 mm to obtain polyether-ether-ketone short fibers;
(3) carding, lapping and needling the polyether-ether-ketone short fibers prepared in the step (2) to prepare the polyether-ether-ketone short fibers with the gram weight of 150-500 g/m2The pre-felting is performed by needling;
(4) and (4) carrying out heat setting treatment on the needled prefabricated felt prepared in the step (3) at the temperature of 200-240 ℃, so as to obtain the polyether-ether-ketone filter felt.
The melt index of the spinning-grade polyether-ether-ketone special material in the step (1) is 50-142 g/10min (a test instrument is a melt flow rate instrument model of mu PXRZ-400A, the test condition is 5Kg load, the temperature is kept at 400 ℃ for 5min), and the spinning-grade polyether-ether-ketone special material is used after being dried for 3-5 h at 130-150 ℃ in vacuum.
The melt spinning method in the step (1) is the same as the spinning process in Chinese patent CN 101387017A (a preparation method of modified polyetheretherketone fiber), and the specific steps are as follows: melting the dried special material for spinning grade polyetheretherketone in a charging barrel of a spinning extruder, then feeding the melted special material into a melt metering pump, forming a plurality of polyetheretherketone monofilaments through a filter screen and a porous spinneret plate of a filter system, feeding the polyetheretherketone monofilaments into a bundling device after passing through an oiling device, performing hot stretch forming on the polyetheretherketone multifilaments obtained after bundling through a guide roll and a drawing disc, and winding the polyetheretherketone multifilaments subjected to stretch forming on a fiber winding device to obtain the polyetheretherketone fibers with the fineness of 2-10 dtex.
The spinning extruder in the step (1) adopts five-zone heating, the spinning speed is 500-1500 m/min, the post-heat stretching temperature is 150-260 ℃, and the stretching ratio is 1.5-4: 1.
the preparation of the needled pre-made felt in the step (3) comprises the steps of firstly opening the polyether-ether-ketone chopped fibers by using a needle opening machine to enable the polyether-ether-ketone chopped fibers to be unfolded into a single-thread shape, conveying the polyether-ether-ketone chopped fibers to a high-position automatic cotton feeder by using a fan to feed a special carding net-forming machine, and uniformly forming a net by quantitative control; finally, reinforcing the fabric by 5-10 times of upper and lower needling of a needling machine to obtain the fabric with the gram weight of 150-500 g/m2The needle punched pre-felting.
Step (4), carrying out high-temperature heat setting treatment on the needled pre-felting for 4-10 min; the thickness of the finally obtained polyether-ether-ketone filter felt is 1.5-5 mm, the aperture size is 5-50 mu m, the air permeability is 900-3000 mm/s, the longitudinal breaking strength is 700-1600N, and the transverse breaking strength is 500-2000N.
The invention has the beneficial effects that: at present, foreign bag-type dust removal technology is advanced, and the filter material is transited to gradient filter materials, functional filter materials and embedded film filter materials, compared with foreign filter materials, domestic products still have great difference, and the filter material is mainly reflected in import dependence of high-performance fiber raw materials, has poor product quality and short service life. The polyether-ether-ketone fiber spun by taking the special material for polyether-ether-ketone spinning as the raw material has the advantages of uniform fineness, high strength and good crimpability, maintains the basic service performance of common fibers, and has excellent performances such as high temperature resistance, flame retardance, oxidation resistance, corrosion resistance and the like. The high-performance polyether-ether-ketone fiber filter felt manufactured by the fiber has the advantages of high temperature resistance (the long-term use temperature of the filter felt reaches 250 ℃), acid and alkali corrosion resistance, good high-temperature hydrolysis resistance, good wear resistance and high mechanical property, and is very suitable for being used in more severe environments such as heavy chemical industry, electric power, building materials, metallurgy, waste incineration and the like which mainly consume energy. Compared with the traditional woven and knitted filter material, the non-woven filter material has the unique advantages that the fibers are randomly arranged in the filter material, the filter material has a three-dimensional net-shaped porous structure and a large specific surface area, and the particle flow filter material needs to pass through a lengthy and complex tortuous pore size system formed by winding the fibers, so that the probability of particle collision and even direct adhesion to the surface of the fibers is greatly increased, the dust particles are effectively intercepted, and the filtering efficiency of the filter material is improved. Compared with traditional filtering materials, the high-performance polyether-ether-ketone fiber filtering felt obtained in the mode has the advantages of being high in filtering efficiency, long in service cycle, convenient to replace and the like, can effectively improve the utilization efficiency of energy and resources, reduces pollutant discharge, and has wide application prospects in the fields of thermal power generation, heavy chemical industry, metallurgical blast furnaces, cement production, waste incineration, northern coal-fired heat supply and the like.
Drawings
FIG. 1 is a photograph of an embodiment of a polyetheretherketone filter felt prepared under the conditions of example 2;
FIG. 2 is a scanning electron microscope scan of a PEEK filter felt prepared under the conditions of example 2, showing a morphology in which fibers are tightly hooked to each other at a magnification of 400 times;
Detailed Description
For a further understanding of the invention, preferred embodiments of the invention are described below in conjunction with the examples, but it should be understood that these descriptions are intended to further illustrate the features and advantages of the invention, and not to limit the claims of the invention.
Example 1
The polyether-ether-ketone fiber with the fineness of 2dtex is prepared by a melt spinning method by selecting a spinning-grade polyether-ether-ketone resin special material (produced by Changchada super plastic engineering research Co., Ltd.) which is dried at 140 ℃ for 4 hours in vacuum and has the melt index of 142g/10min (a test instrument is a melt flow rate instrument with the model of mu PXRZ-400A, the test condition is 5Kg load, and the temperature is kept at 400 ℃ for 5 min). (spinning process conditions: a spinning extruder: MS-1-1 TEXT, please refer to Chinese patent CN 101387017A. temperature range of each heating zone, first zone 260 ℃, second zone 350 ℃, third zone 370 ℃, fourth zone 385 ℃, fifth zone 390 ℃, spinning speed of 1500m/min, fiber stretching ratio of 3.5: 1, rear stretching temperature of 200 ℃), further chopping the fibers into 40mm chopped fibers, then opening the polyether ether ketone fibers by a needle opening machine (KL-K-120 type) to spread the bundle-shaped PEEK fibers into single filaments, conveying the fibers to a high-position automatic cotton feeder (FL-2-160 type) through a fan to feed into a special carding net forming machine (FL-P-300 type), uniformly forming the net and controlling the gram weight of the net to 150g/m2And (3) reinforcing the fiber web by 7 times of up-and-down needling by using a needle machine (FL-2D-260 type) to obtain a needled prefabricated felt, and finally performing heat setting treatment on the prefabricated felt at the heat setting temperature of 200 ℃ for 5min to obtain the polyether-ether-ketone filter felt.
Example 2
Selecting a special material (produced by Changchada super Plastic engineering research Co., Ltd.) of spinning-grade polyetheretherketone resin with a melt index of 50g/10min (a testing instrument is a melt flow rate instrument with the model of mu PXRZ-400A, a testing condition is 5Kg load, and a 400 ℃ heat preservation is 5min) dried at 140 ℃ in vacuum, preparing the polyetheretherketone fiber with the fineness of 3.5dtex by a melt spinning method (spinning process condition: spinning extruder: MS-1-1 TEXT, detailed operation please refer to the temperature range of each heating zone of Chinese patent CN 101387017A, 260 ℃ in a first zone, 350 ℃ in a second zone, 370 ℃ in a third zone, 390 ℃ in a fourth zone, 400 ℃ in a fifth zone, the spinning speed is 1200m/min, the fiber tensile ratio is 2.7:1, and the post-stretching temperature is 180 ℃), further chopping the fiber into 40mm chopped fiber, then opening the polyetheretherketone fiber by a needle-opening machine (KL-K-120 type), make itSpreading the bundle-shaped PEEK fiber into a single filament shape, conveying the filament-shaped PEEK fiber to a high-position automatic cotton feeder (FL-2-160 type) through a fan, feeding the filament-shaped PEEK fiber into a special carding net former (FL-P-300 type), uniformly forming a net and controlling the gram weight of the net to be 300g/m2And (3) reinforcing the fiber web by 7 times of up-and-down needling by using a needle machine (FL-2D-260 type) to obtain a needled prefabricated felt, and finally performing heat setting treatment on the prefabricated felt at the heat setting temperature of 200 ℃ for 5min to obtain the polyether-ether-ketone filter felt.
Example 3
Selecting a special material (produced by Changchada super Plastic engineering research Co., Ltd.) of spinning-grade polyetheretherketone resin with a melt index of 50g/10min (a testing instrument is a melt flow rate instrument with the model of mu PXRZ-400A, a testing condition is 5Kg load, and a 400 ℃ heat preservation is 5min) dried at 140 ℃ in vacuum, preparing the polyetheretherketone fiber with the fineness of 10dtex (the spinning process condition is a spinning extruder with MS-1-1 TEXT, the detailed operation refers to the temperature range of each heating zone of Chinese patent CN 101387017A, the temperature of a first zone is 260 ℃, a second zone is 350 ℃, a third zone is 370 ℃, a fourth zone is 390 ℃, a fifth zone is 400 ℃, the spinning speed is 1500m/min, the fiber tensile ratio is 1.5:1, the post-stretching temperature is 180 ℃), further chopping the fiber into 40mm chopped fiber, then opening the polyetheretherketone fiber by a needle opening machine (KL-K-120 type), spreading the bundle-shaped PEEK fiber into a single filament shape, conveying the filament-shaped PEEK fiber to a high-position automatic cotton feeder (FL-2-160 type) through a fan, feeding a special carding net-forming machine (FL-P-300 type), uniformly forming the net and controlling the gram weight of the net to be 300g/m2And (3) reinforcing the fiber web by 7 times of up-and-down needling by using a needle machine (FL-2D-260 type) to obtain a needled prefabricated felt, and finally performing heat setting treatment on the prefabricated felt at the heat setting temperature of 200 ℃ for 5min to obtain the polyether-ether-ketone filter felt.
Example 4
Selecting a special material (produced by Changchada super Plastic engineering research Co., Ltd.) for spinning-grade polyetheretherketone resin, which is dried at 140 ℃ for 4 hours in vacuum and has a melt index of 50g/10min (the test instrument is a melt flow rate instrument with the model of mu PXRZ-400A, the test condition is 5Kg load and the temperature is kept at 400 ℃ for 5min), and preparing the polyetheretherketone fiber with the fineness of 3.5dtex by a melt spinning method (the spinning process condition is that the spinning extrusion is adopted, the melt index is 50g/10 min)Machine: for MS-1-1 TEXT, please refer to Chinese patent CN 101387017A for detailed operation. The temperature ranges of the heating zones are 260 ℃ in the first zone, 350 ℃ in the second zone, 370 ℃ in the third zone, 390 ℃ in the fourth zone and 400 ℃ in the fifth zone. The spinning speed is 1200m/min, the fiber stretching ratio is 2.7:1, the post-stretching temperature is 180 ℃), the fibers are further chopped into 10mm chopped fibers, the polyether-ether-ketone fibers are opened by a needle opening machine (KL-K-120 type), the bundled PEEK fibers are unfolded into single filaments, the filaments are conveyed to a high-position automatic cotton feeder (FL-2-160 type) by a fan to be fed into a special carding net-forming machine (FL-P-300 type), the webs are uniformly formed, and the gram weight of the webs is controlled to be 300g/m2And (3) reinforcing the fiber web by 7 times of up-and-down needling by using a needle machine (FL-2D-260 type) to obtain a needled prefabricated felt, and finally performing heat setting treatment on the prefabricated felt at the heat setting temperature of 200 ℃ for 5min to obtain the polyether-ether-ketone filter felt.
Example 5
Selecting a special material (produced by Changchada super Plastic engineering research Co., Ltd.) of spinning-grade polyetheretherketone resin with a melt index of 50g/10min (a testing instrument is a melt flow rate instrument with the model of mu PXRZ-400A, a testing condition is 5Kg load, and a 400 ℃ heat preservation is 5min) dried at 140 ℃ in vacuum, preparing the polyetheretherketone fiber with the fineness of 3.5dtex by a melt spinning method (spinning process condition: spinning extruder: MS-1-1 TEXT, detailed operation please refer to the temperature range of each heating zone of Chinese patent CN 101387017A, 260 ℃ in a first zone, 350 ℃ in a second zone, 370 ℃ in a third zone, 390 ℃ in a fourth zone, 400 ℃ in a fifth zone, the spinning speed is 1200m/min, the fiber tensile ratio is 2.7:1, and the post-stretching temperature is 180 ℃), further chopping the fiber into 100mm chopped fiber, then opening the polyetheretherketone fiber by a needle-opening machine (KL-K-120 type), spreading the bundle-shaped PEEK fiber into a single filament shape, conveying the filament-shaped PEEK fiber to a high-position automatic cotton feeder (FL-2-160 type) through a fan, feeding a special carding net-forming machine (FL-P-300 type), uniformly forming the net and controlling the gram weight of the net to be 200g/m2And (3) reinforcing the fiber web by 7 times of up-and-down needling by using a needle machine (FL-2D-260 type) to obtain a needled prefabricated felt, and finally performing heat setting treatment on the prefabricated felt at the heat setting temperature of 200 ℃ for 5min to obtain the polyether-ether-ketone filter felt.
Example 6
Selecting a special material (produced by Changchada super Plastic engineering research Co., Ltd.) of spinning-grade polyetheretherketone resin with a melt index of 50g/10min (a testing instrument is a melt flow rate instrument with the model of mu PXRZ-400A, a testing condition is 5Kg load, and a 400 ℃ heat preservation is 5min) dried at 140 ℃ in vacuum, preparing the polyetheretherketone fiber with the fineness of 3.5dtex by a melt spinning method (spinning process condition: spinning extruder: MS-1-1 TEXT, detailed operation please refer to the temperature range of each heating zone of Chinese patent CN 101387017A, 260 ℃ in a first zone, 350 ℃ in a second zone, 370 ℃ in a third zone, 390 ℃ in a fourth zone, 400 ℃ in a fifth zone, the spinning speed is 1200m/min, the fiber tensile ratio is 2.7:1, and the post-stretching temperature is 180 ℃), further chopping the fiber into 40mm chopped fiber, then opening the polyetheretherketone fiber by a needle-opening machine (KL-K-120 type), spreading the bundle-shaped PEEK fiber into a single filament shape, conveying the filament-shaped PEEK fiber to a high-position automatic cotton feeder (FL-2-160 type) through a fan, feeding a special carding net-forming machine (FL-P-300 type), uniformly forming the net and controlling the gram weight of the net to be 300g/m2And (3) carrying out up-and-down needling 5 times of reinforcement on the fiber web by using a needle machine (FL-2D-260 type) to obtain a needled prefabricated felt, and finally carrying out heat setting treatment on the prefabricated felt at the heat setting temperature of 200 ℃ for 5min to obtain the polyether-ether-ketone filter felt.
Example 7
Selecting a special material (produced by Changchada super Plastic engineering research Co., Ltd.) of spinning-grade polyetheretherketone resin with a melt index of 50g/10min (a testing instrument is a melt flow rate instrument with the model of mu PXRZ-400A, a testing condition is 5Kg load, and a 400 ℃ heat preservation is 5min) dried at 140 ℃ in vacuum, preparing the polyetheretherketone fiber with the fineness of 3.5dtex by a melt spinning method (spinning process condition: spinning extruder: MS-1-1 TEXT, detailed operation please refer to the temperature range of each heating zone of Chinese patent CN 101387017A, 260 ℃ in a first zone, 350 ℃ in a second zone, 370 ℃ in a third zone, 390 ℃ in a fourth zone, 400 ℃ in a fifth zone, the spinning speed is 1200m/min, the fiber tensile ratio is 2.7:1, and the post-stretching temperature is 180 ℃), further chopping the fiber into 40mm chopped fiber, then opening the polyetheretherketone fiber by a needle-opening machine (KL-K-120 type), the bundle-shaped PEEK fiber is unfolded into a single filament shape and is conveyed to a high-level automatic cotton feeder (FL-2-160 type) by a fan to be fedA special carding net former (FL-P-300 type) for uniformly forming net and controlling the gram weight of the fiber net to be 300g/m2And (3) performing 10 times of upper and lower needling on the fiber web by using a needle machine (FL-2D-260 type) to obtain a needled prefabricated felt, and finally performing heat setting treatment on the prefabricated felt at the heat setting temperature of 200 ℃ for 5min to obtain the polyether-ether-ketone filter felt.
Example 8
Selecting a special material (produced by Changchada super Plastic engineering research Co., Ltd.) of spinning-grade polyetheretherketone resin with a melt index of 50g/10min (a testing instrument is a melt flow rate instrument with the model of mu PXRZ-400A, a testing condition is 5Kg load, and a 400 ℃ heat preservation is 5min) dried at 140 ℃ in vacuum, preparing the polyetheretherketone fiber with the fineness of 3.5dtex by a melt spinning method (spinning process condition: spinning extruder: MS-1-1 TEXT, detailed operation please refer to the temperature range of each heating zone of Chinese patent CN 101387017A, 260 ℃ in a first zone, 350 ℃ in a second zone, 370 ℃ in a third zone, 390 ℃ in a fourth zone, 400 ℃ in a fifth zone, the spinning speed is 1200m/min, the fiber tensile ratio is 2.7:1, and the post-stretching temperature is 180 ℃), further chopping the fiber into 40mm chopped fiber, then opening the polyetheretherketone fiber by a needle-opening machine (KL-K-120 type), spreading the bundle-shaped PEEK fiber into a single filament shape, conveying the filament-shaped PEEK fiber to a high-position automatic cotton feeder (FL-2-160 type) through a fan, feeding a special carding net-forming machine (FL-P-300 type), uniformly forming the net and controlling the gram weight of the net to be 320g/m2And (3) carrying out 7 times of upper and lower needling on the fiber web by using a needle machine (FL-2D-260 type) to obtain a needled prefabricated felt, and finally carrying out heat setting treatment on the prefabricated felt at the heat setting temperature of 220 ℃ for 5min to obtain the polyether-ether-ketone filter felt.
Example 9
Selecting a special material (produced by Changchada engineering research Co., Ltd.) of spinning-grade polyetheretherketone resin with a melt index of 50g/10min (a test instrument is a melt flow rate instrument with the model of mu PXRZ-400A, a test condition is 5Kg load, and the temperature is kept at 400 ℃ for 5min) dried at 140 ℃ in vacuum, preparing the polyetheretherketone fiber with the fineness of 3.5dtex by a melt spinning method (the spinning process condition is that a spinning extruder is MS-1-1 TEXT, the detailed operation refers to the temperature range of each heating area of Chinese patent CN 101387017A),first zone 260 ℃, second zone 350 ℃, third zone 370 ℃, fourth zone 390 ℃, fifth zone 400 ℃. The spinning speed is 1200m/min, the fiber stretching ratio is 2.7:1, the post-stretching temperature is 180 ℃), the fibers are further chopped into 40mm chopped fibers, the polyether-ether-ketone fibers are opened by a needle opening machine (KL-K-120 type), the bundled PEEK fibers are unfolded into single filaments, the filaments are conveyed to a high-position automatic cotton feeder (FL-2-160 type) by a fan to be fed into a special carding net-forming machine (FL-P-300 type), the webs are uniformly formed, and the gram weight of the webs is controlled to be 500g/m2And (3) reinforcing the fiber web by 7 times of up-and-down needling by using a needle machine (FL-2D-260 type) to obtain a needled prefabricated felt, and finally performing heat setting treatment on the prefabricated felt at the heat setting temperature of 200 ℃ for 5min to obtain the polyether-ether-ketone filter felt.
Example 10
Selecting a special material (produced by Changchada super Plastic engineering research Co., Ltd.) of spinning-grade polyetheretherketone resin with a melt index of 50g/10min (a testing instrument is a melt flow rate instrument with the model of mu PXRZ-400A, a testing condition is 5Kg load, and a 400 ℃ heat preservation is 5min) dried at 140 ℃ in vacuum, preparing the polyetheretherketone fiber with the fineness of 3.5dtex by a melt spinning method (spinning process condition: spinning extruder: MS-1-1 TEXT, detailed operation please refer to the temperature range of each heating zone of Chinese patent CN 101387017A, 260 ℃ in a first zone, 350 ℃ in a second zone, 370 ℃ in a third zone, 390 ℃ in a fourth zone, 400 ℃ in a fifth zone, the spinning speed is 1200m/min, the fiber tensile ratio is 2.7:1, and the post-stretching temperature is 180 ℃), further chopping the fiber into 40mm chopped fiber, then opening the polyetheretherketone fiber by a needle-opening machine (KL-K-120 type), spreading the bundle-shaped PEEK fiber into a single filament shape, conveying the filament-shaped PEEK fiber to a high-position automatic cotton feeder (FL-2-160 type) through a fan, feeding the filament-shaped PEEK fiber to a special carding net former (FL-P-300 type), uniformly forming the net and controlling the gram weight of the net to be 300g/m2And (3) reinforcing the fiber web by 7 times of up-and-down needling by using a needle machine (FL-2D-260 type) to obtain a needled prefabricated felt, and finally performing heat setting treatment on the prefabricated felt at the heat setting temperature of 240 ℃ for 5min to obtain the polyether-ether-ketone filter felt.
The properties of the polyetheretherketone filter felt prepared by the methods of examples 1 to 10 are shown in the following table
Note that the gram weight is determined according to the regulation of national standard FZ/T60003
The thickness is measured according to the specification of national standard FZ/T60004
The air permeability is measured according to the regulations of the national standard GB/T5453
The filtration efficiency is determined according to the specification of the national standard GB/T6719-2009
The acid, alkali and high temperature resistance tests are determined according to the specification of the national standard GB/T6719-one 2009
The breaking strength is determined according to the provisions of the national standard GB/T3923.1
The heat shrinkage is determined according to the specification of the national standard GB/T6719-2009
When the breaking strength retention ratio is more than 100%, it is counted as 100%.
Claims (3)
1. A preparation method of a polyether-ether-ketone filter felt comprises the following steps:
(1) melting the dried spinning-grade special polyether-ether-ketone material in a charging barrel of a spinning extruder, then feeding the melted material into a melt metering pump, forming a plurality of polyether-ether-ketone monofilaments through a filter screen and a porous spinneret plate of a filter system, feeding the polyether-ether-ketone monofilaments into a bundling device after passing through an oiling device, performing hot stretching and shaping on the polyether-ether-ketone multifilaments obtained after bundling through a guide roll and a drawing disc, and winding the stretched and shaped polyether-ether-ketone multifilaments on a fiber winding device to obtain polyether-ether-ketone fibers with the fineness of 2-10 dtex; the spinning extruder is heated in five zones, the spinning speed is 500-1500 m/min, the post-heat stretching temperature is 150-260 ℃, and the stretching ratio is 1.5-4: 1;
(2) chopping the polyether-ether-ketone fiber prepared in the step (1) into short fibers with the length of 10-100 mm to obtain polyether-ether-ketone short fibers;
(3) loosening the polyether-ether-ketone chopped fibers prepared in the step (2) by using a loosening needle opener to spread the polyether-ether-ketone chopped fibers into single filaments, conveying the single filaments to a high-position automatic cotton feeder by a fan to feed a special carding net-forming machine, and uniformly forming a net by quantitative control; finally, reinforcing the fabric by 5-10 times of upper and lower needling of a needling machine to obtain the fabric with the gram weight of 150-500 g/m2The pre-felting is performed by needling;
(4) and (3) carrying out heat setting treatment on the needled prefabricated felt prepared in the step (3) for 4-10 min at the temperature of 200-240 ℃, so as to obtain the polyether-ether-ketone filter felt, wherein the thickness of the polyether-ether-ketone filter felt is 1.5-5 mm, the pore size is 5-50 mu m, the air permeability is 900-3000 mm/s, the longitudinal breaking strength is 700-1600N, and the transverse breaking strength is 500-2000N.
2. The method for preparing a polyetheretherketone filter felt according to claim 1, wherein: the melt index of the spinning-grade polyether-ether-ketone special material in the step (1) is 50-142 g/10min, the test instrument is a melt flow rate instrument with the model of mu PXRZ-400A, the test condition is 5Kg load, and the temperature is kept at 400 ℃ for 5 min.
3. A polyetheretherketone filter felt is characterized in that: is prepared by the method of any one of claims 1 to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810272192.XA CN108499222B (en) | 2018-03-29 | 2018-03-29 | Polyether-ether-ketone filter felt and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810272192.XA CN108499222B (en) | 2018-03-29 | 2018-03-29 | Polyether-ether-ketone filter felt and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108499222A CN108499222A (en) | 2018-09-07 |
| CN108499222B true CN108499222B (en) | 2021-02-05 |
Family
ID=63379256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810272192.XA Active CN108499222B (en) | 2018-03-29 | 2018-03-29 | Polyether-ether-ketone filter felt and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108499222B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110656492B (en) * | 2019-10-15 | 2022-03-08 | 吉林大学 | High-performance oil-water separation material based on polyether-ether-ketone, preparation method and application thereof |
| CN112138468A (en) * | 2020-08-19 | 2020-12-29 | 安徽中电环保材料股份有限公司 | Efficient acid-base-resistant filtering material and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730764A (en) * | 2005-08-02 | 2006-02-08 | 中材科技股份有限公司 | Method for preparing continuous fiber reinforced thermoplastic plastic felt premix using needle punching |
| CN202724873U (en) * | 2012-06-21 | 2013-02-13 | 安徽省元琛环保科技有限公司 | Double base cloth reinforced layer fiber filter felt |
| CN106268030A (en) * | 2016-08-08 | 2017-01-04 | 浙江省纺织测试研究院 | A kind of corrosion-proof high-temp flue gas composite filter material and preparation method thereof |
| CN206508667U (en) * | 2016-12-21 | 2017-09-22 | 南通汇平高分子新材料有限公司 | A kind of high intensity PEEK filter clothes for being easily changed cleaning |
| CN107245810A (en) * | 2017-06-28 | 2017-10-13 | 吉林大学 | Carbon fiber long fiber reinforced PEEK-based composites and preparation method thereof |
| CN107723891A (en) * | 2017-11-01 | 2018-02-23 | 南通汇平高分子新材料有限公司 | A kind of preparation method of industrial filter cloth |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225555B (en) * | 2008-02-01 | 2010-05-12 | 吉林大学 | Melt-spinning hot-stretch forming preparation method of polyetheretherketone fibre |
-
2018
- 2018-03-29 CN CN201810272192.XA patent/CN108499222B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730764A (en) * | 2005-08-02 | 2006-02-08 | 中材科技股份有限公司 | Method for preparing continuous fiber reinforced thermoplastic plastic felt premix using needle punching |
| CN202724873U (en) * | 2012-06-21 | 2013-02-13 | 安徽省元琛环保科技有限公司 | Double base cloth reinforced layer fiber filter felt |
| CN106268030A (en) * | 2016-08-08 | 2017-01-04 | 浙江省纺织测试研究院 | A kind of corrosion-proof high-temp flue gas composite filter material and preparation method thereof |
| CN206508667U (en) * | 2016-12-21 | 2017-09-22 | 南通汇平高分子新材料有限公司 | A kind of high intensity PEEK filter clothes for being easily changed cleaning |
| CN107245810A (en) * | 2017-06-28 | 2017-10-13 | 吉林大学 | Carbon fiber long fiber reinforced PEEK-based composites and preparation method thereof |
| CN107723891A (en) * | 2017-11-01 | 2018-02-23 | 南通汇平高分子新材料有限公司 | A kind of preparation method of industrial filter cloth |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108499222A (en) | 2018-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100489174C (en) | Production process of polytetrafluoroethylene fiber acupuncture filtering felt | |
| CN100448508C (en) | Basalt fiber high temperature compositing filter material | |
| CN101810971B (en) | Preparation method of PBO composite ultra-high temperature filter material | |
| CN101406780A (en) | Filter material and use | |
| CN108499222B (en) | Polyether-ether-ketone filter felt and preparation method thereof | |
| CN102631812B (en) | Production technique of ultrafiltration bag | |
| CN105709504A (en) | High-efficiency spunlace filter material and preparing method thereof | |
| CN102380259A (en) | Filter material and purpose thereof | |
| CN106823561A (en) | A kind of inorfil is combined woven filtrate and preparation method with organic fiber | |
| CN112973284A (en) | High-temperature-resistant filtering material | |
| CN113652799B (en) | Preparation process method of needling dust removal filter cloth | |
| CN102061626A (en) | Preparation method of PP composite felt with functions of environment friendliness, high temperature resistance, acid-base resistance and corrosion resistance | |
| CN205216405U (en) | Filtering surface material is crossed in acupuncture | |
| CN206631327U (en) | A kind of woven filtrate of inorfil | |
| JP5293071B2 (en) | Blended cotton and nonwoven fabric comprising the same, and method for producing blended cotton | |
| CN107744690A (en) | MULTILAYER COMPOSITE felt is used in one kind filtering | |
| CN105688512A (en) | Spunlace precise surface filter material and preparation method thereof | |
| CN206566609U (en) | A kind of woven filtrate of organic fiber | |
| CN101322890A (en) | Filter material and use | |
| CN109550312A (en) | A kind of easy cleaning terylene needled felt | |
| CN102908827B (en) | Composite filtering material with skin-core structure, as well as preparation method and application of composite filtering material | |
| CN202044851U (en) | Basalt composite filter material for high-temperature flue gas dedusting system | |
| CN101530696A (en) | Filtering material used for removing dust by combing electrical bag and application thereof | |
| CN203139797U (en) | High-temperature acid-proof basalt fiber composite spunlace filter felt | |
| CN105363279A (en) | Glass fiber and aramid fiber or polysulfonamide composite needle-punched felt and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |