CN112221250B - PBS/PP double-component melt-blown fiber filtering material and manufacturing method thereof - Google Patents
PBS/PP double-component melt-blown fiber filtering material and manufacturing method thereof Download PDFInfo
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- 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
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
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- 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
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0622—Melt-blown
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- 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
- B01D2239/10—Filtering material manufacturing
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- 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
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1208—Porosity
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- 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
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1225—Fibre length
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- 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
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1291—Other parameters
Abstract
The invention discloses a PBS/PP double-component melt-blown fiber filter material and a manufacturing method thereof, wherein the fineness range of the filter material is 0.8-10 mu m, and the average fineness is 4-6 mu m; the thickness of the filter material is 100 + -2 mm, the filter material is die-cut into a plurality of square-hole-shaped block-shaped filter materials, the gap diameter of the filter material is 5-70 μm, the porosity is 90-95%, and the specific surface area is 8000m2/m3The scale deposit rate is (9-11) Kg-SS/m3The manufacturing method of the filter material comprises the following steps of preparing the filter material; the invention provides a PBS/PP double-component melt-blown fiber filtering material and a manufacturing method thereof, and the manufacturing method has the advantages of short process flow, controllable preparation process and energy conservation; the obtained filtering material has three-dimensional pores inside, can intercept and adsorb impurities with different sizes respectively, not only increases the filtering area and the pollutant carrying capacity, but also has higher strength, and ensures that the filtering material has the advantages of strong filtering property, good filtering effect, durability, good hydrophilic water filtering property, easy back flushing, water saving, high efficiency and the like.
Description
Technical Field
The invention relates to a filter material and a method, in particular to a PBS/PP double-component melt-blown fiber filter material and a manufacturing method thereof.
Background
The melt-blown non-woven fabric is prepared by melting high polymer chips through a screw extruder, spraying the high polymer chips through a spinneret orifice into fibers, strongly stretching the fibers under the spraying of high-speed hot air flow to form superfine fibers, and directly forming the fibers into the fabric through disordered lapping. The melt-blown fiber has large specific surface area, small gaps and large porosity, and is a heat-insulating and filtering material with excellent performance.
In the field of filter materials, most of the melt-blown filter materials used at present are PP single-component fibers, and after electret treatment, the filter efficiency can reach 99.99 percent, but the product strength is low, the filter resistance cannot meet the requirement of a high-efficiency filter material, and the market demand cannot be met. Therefore, how to improve the filtration efficiency and simultaneously make the filtration resistance meet the requirement of a high-efficiency filter material is a technical problem to be solved by the melt-blown filter material.
Currently, there is no ideal single meltblown fiber that can meet all the requirements, which has led to the emergence of bicomponent meltblown fibers. The bicomponent melt-blown fiber is generally a fiber formed by extruding two polymers from at least two screw extruders respectively and then passing through a special spinneret orifice, and the structure of the bicomponent melt-blown fiber can be a sheath-core type, or a side-by-side type or other types of section structures. The bicomponent melt-blown fiber nonwoven has various nonwoven products with unique material and performance combination, so compared with the monocomponent melt-blown fiber, the bicomponent melt-blown fiber nonwoven can improve the performance of the product, such as elasticity, flexibility, bonding force, strength, durability and the like which can not be achieved by the conventional fiber technology.
The main two-component melt-blown fiber non-woven fabric in the current market is a mesh fabric formed by bonding PLA fibers and PP fibers, has the problems of uneven gap size, poor structural tolerance and the like caused by poor distribution uniformity among the fibers, and has the defects of low filtering efficiency and the like in the application aspects of sewage treatment and the like, when the existing two-component melt-blown fiber non-woven fabric is used as a filtering material, the hardening of a filtering layer and the bias short circuit are easy to occur, so that the filtering equipment cannot work normally, the filtering material needs to be replaced, and the complex cost is high; the filtering material is frequently washed incompletely in the filtering equipment, so that the water production of the filtering equipment is unqualified, the stable operation of a subsequent system is influenced, and the filtering material in the filtering equipment is not easy to wash completely, so that the waste water is time-consuming when the filtering material is stirred and backwashed, the backwash water accounts for 3% -5% of the water production ratio, the water consumption is high, and the water resource is seriously wasted.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a PBS/PP double-component melt-blown fiber filter material and a manufacturing method thereof.
In order to solve the technical problems, the invention adopts the technical scheme that: the fineness range of the PBS/PP double-component melt-blown fiber filter material is 0.8-10 mu m, the average fineness is 4-6 mu m, and the fiber content of which the fineness is not more than 1 mu m accounts for 10-15 percent of the total fiber weight(ii) a The thickness of the PBS/PP double-component melt-blown fiber filtering material is 100 +/-2 mm, the PBS/PP double-component melt-blown fiber filtering material is die-cut into a plurality of square-hole-shaped block-shaped filtering materials, the gap diameter of each filtering material is 5-70 mu m, the porosity is 90-95%, and the specific surface area is 8000m2/m3The scale deposit rate is (9-11) Kg-SS/m3。
The PBS/PP bicomponent melt-blown fiber filter material is manufactured by the following method.
A manufacturing method of PBS/PP double-component melt-blown fiber filter material adopts the following processes:
preparation of a PBS melt: drying the PBS raw material at 80-100 ℃ for 2-4 hours, and then mixing the PBS raw material with a PBS auxiliary agent according to the weight ratio of (96.8-95.2): (3.2-4.8), inputting into a screw extruder which is correspondingly arranged, melting at the temperature of 190 ℃ and 250 ℃ to obtain PBS melt, filtering the PBS melt through a melt filter which is correspondingly arranged, and metering by a metering pump which is correspondingly arranged;
preparing a PP melt: mixing a PP raw material and a PP auxiliary agent according to the ratio of (97.8-99.2): (1.2-0.8), inputting into a screw extruder which is correspondingly arranged, melting at the temperature of 200-270 ℃ to obtain PP melt, filtering the PP melt through a melt filter which is correspondingly arranged, and metering by a metering pump which is correspondingly arranged;
mixing the PBS melt obtained above with a PP melt according to the ratio of PBS to PP (30-60): (70-40), then inputting the mixture into a spinneret orifice of the same melt-blown die head to be converged and sprayed out, directly preparing the parallel type bicomponent melt-blown composite fiber under the blowing action of hot air at the temperature of 280-300 ℃ at two sides of the spinneret orifice of the melt-blown die head, and cooling and forming the bicomponent melt-blown composite fiber on a receiving device to form the PBS/PP bicomponent melt-blown fiber filter material. The PBS/PP double-component melt-blown fiber filter material obtained by the manufacturing method has high strength and long service cycle, and can be free of maintenance within 8-10 years after being added once.
Further, die cutting is carried out on the PBS/PP double-component melt-blown fiber filtering material to obtain a plurality of blocky filtering materials; the blocky filter material has excellent characteristics, good filtering performance, high strength and stronger durability, and because the interior of the filter material has a three-dimensional pore structure, impurities with different sizes can be respectively intercepted and adsorbed, so that the filtering area and the pollutant carrying capacity of the filter material are increased, and the strong filtering performance and the good filtering effect are ensured; the thickness of the filter material is 100 +/-2 millimeters, and the filter material has a good deep filtering effect; the filter material has extremely high hydrophilicity and good hydrophilic water filtering property, is convenient to wash the filter material, saves water and time when the filter material is subjected to back washing in filter equipment, and the back washing water only accounts for 0.5 percent of the produced water, thereby saving water and being efficient; the filtering material has high self cleanliness, no pollution to water quality, and acid and alkali resistance and corrosion resistance of organic solvents.
The filter material can realize continuous and efficient filtration, a set filtration effect can be achieved by using a small filter device in a matching way, and the whole floor area of the filter device used in the matching way is 1/4 of the traditional mechanical filtration.
Further, the PBS auxiliary agent is prepared by mixing triethyl citrate (TEC) and polyethylene glycol (PEG) according to the mass ratio of 60:40, wherein the triethyl citrate (TEC) can increase the tensile strength and the elongation at break of the PBS, and the polyethylene glycol (PEG) can increase the impact strength and the elastic modulus of the PBS.
And further, the PP auxiliary agent is obtained by mixing the antistatic master batch and an antioxidant according to the mass percentage of 70: 30. The antioxidant can be triphenyl phosphite (TPP), and the addition of the antistatic master batch can prevent the finally manufactured filter material from reducing the gap of the filter material due to electrostatic adsorption of dust.
The invention adopts two polymers of PBS (poly butylene succinate) and PP (polypropylene) for melt-blowing, and the two polymers are different in auxiliary agent modification and self thermal contraction performance in the process of forming the melt-blown fiber filter material, so that the formed fiber is softer than the common bicomponent melt-blown fiber and has toughness and hydrophilicity.
In the production process of the PBS/PP double-component melt-blown fiber filter material, the PBS and the PP are adjusted in melt-blown mixing proportion, so that the longitudinal section of a product is obtained to have different fiber density distributions, the size of gaps is adjustable, and the proportion of porosity is adjustable, so that the filter material structure has the graded filtering characteristic, the filtering efficiency is high, and the filter material is suitable for filtering different water suspended matters.
The invention provides a PBS/PP double-component melt-blown fiber filter material and a manufacturing method thereof, and the manufacturing method of the filter material has the advantages of short process flow, controllable preparation process and energy conservation; the obtained filtering material has three-dimensional pores inside, can intercept and adsorb impurities with different sizes respectively, not only increases the filtering area and the pollutant carrying capacity of the filtering material, but also has higher strength, and ensures that the filtering material has the advantages of strong filtering property, good filtering effect, durability, water saving, high efficiency and the like.
Drawings
FIG. 1 is a schematic process flow diagram of the manufacturing method of the PBS/PP bicomponent melt-blown fiber filter material of the invention.
FIG. 2 is a schematic diagram of the longitudinal section structure of the PBS/PP bicomponent melt-blown fiber filter material prepared by the manufacturing method of the invention.
FIG. 3 is a schematic view of a production process of a PLA and PP bicomponent melt-blown nonwoven fabric in the prior art.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The first embodiment,
As shown in figure 1, the manufacturing method of the PBS/PP double-component melt-blown fiber filter material adopts the following processes:
preparation of a PBS melt: the PBS starting material was dried at 100 ℃ for 2 hours, and then the PBS starting material was mixed with PBS adjuvant at a ratio of 96.8: 3.2, inputting the mixture into a screw extruder which is correspondingly arranged, melting the mixture at 190 ℃ to obtain PBS melt, filtering the PBS melt by a melt filter which is correspondingly arranged, and metering the PBS melt by a metering pump which is correspondingly arranged;
preparing a PP melt: mixing a PP raw material and a PP auxiliary agent according to a ratio of 99.2: 0.8 percent of the mixture is mixed and then is input into a screw extruder which is correspondingly arranged, and is melted at 270 ℃ to obtain PP melt, the PP melt is filtered by a melt filter which is correspondingly arranged, and then is metered by a metering pump which is correspondingly arranged;
mixing the PBS melt and PP melt according to the ratio of PBS to PP to 30: 70, then inputting the mixture into a spinneret orifice of the same melt-blown die head to be converged and sprayed out, directly preparing the side-by-side type bicomponent melt-blown composite fiber under the blowing action of hot air with the temperature of 300 ℃ at two sides of the spinneret orifice of the melt-blown die head, and cooling and forming the bicomponent melt-blown composite fiber on a receiving device to form the PBS/PP bicomponent melt-blown fiber filter material.
The PBS/PP double-component melt-blown fiber filter material has the fineness range of 0.8-6 mu m, the average fineness of 4 mu m and the fiber amount of which the fineness is not more than 1 mu m accounting for 10-15% of the total fiber amount; the thickness of the PBS/PP double-component melt-blown fiber filter material is 102mm, the PBS/PP double-component melt-blown fiber filter material is die-cut into a plurality of block-shaped filter materials, the gap diameter of the filter materials is 30-70 mu m, the porosity is 90-95%, and the specific surface area is 8000m2/m3The scale deposit rate is 11Kg-SS/m3Tests prove that the filter material of the embodiment is an ideal water filter material.
Example II,
As shown in figure 1, the manufacturing method of the PBS/PP double-component melt-blown fiber filter material adopts the following processes:
preparation of a PBS melt: the PBS starting material was dried at 80 ℃ for 3 hours, and then the PBS starting material was mixed with PBS adjuvant at a ratio of 96: 4, inputting the mixture into a screw extruder which is correspondingly arranged, melting the mixture at 220 ℃ to obtain PBS melt, filtering the PBS melt by a melt filter which is correspondingly arranged, and metering the PBS melt by a metering pump which is correspondingly arranged;
preparing a PP melt: mixing a PP raw material and a PP auxiliary agent according to a ratio of 99: 1, inputting the mixture into a screw extruder which is correspondingly arranged, melting the mixture at 250 ℃ to obtain a PP melt, filtering the PP melt by a melt filter which is correspondingly arranged, and metering by a metering pump which is correspondingly arranged;
mixing the PBS melt obtained above with a PP melt according to a ratio of PBS to PP being 50: 50 percent of the total mass of the two components are mixed, then the mixture is input into a spinneret orifice of the same melt-blown die head to be converged and sprayed out, and the two components can be directly made into parallel two-component melt-blown composite fibers under the blowing action of hot air with the temperature of 290 ℃ at two sides of the spinneret orifice of the melt-blown die head, and the two-component melt-blown composite fibers are cooled and formed on a receiving device to form the PBS/PP two-component melt-blown fiber filter material.
The PBS/PP double-component melt-blown fiber filter material has the fineness range of 3-8 mu m, the average fineness of 5 mu m and the fiber amount of which the fineness is not more than 1 mu m accounting for 10-15% of the total fiber amount; the thickness of the PBS/PP double-component melt-blown fiber filtering material is 100mm, the PBS/PP double-component melt-blown fiber filtering material is die-cut into a plurality of block-shaped filtering materials, the gap diameter of the filtering materials is 10-50 mu m, the porosity is 90-95%, and the specific surface area is 8000m2/m3The scale deposit rate is 10Kg-SS/m3Tests prove that the filter material of the embodiment is an ideal water filter material.
Example III,
As shown in figure 1, the manufacturing method of the PBS/PP double-component melt-blown fiber filter material adopts the following processes:
preparation of a PBS melt: the PBS starting material was dried at 85 ℃ for 3 hours, and then the PBS starting material was mixed with PBS adjuvant at a ratio of 96.5: 3.5, inputting the mixture into a screw extruder which is correspondingly arranged, melting the mixture at 200 ℃ to obtain PBS melt, filtering the PBS melt by a melt filter which is correspondingly arranged, and metering the PBS melt by a metering pump which is correspondingly arranged;
preparing a PP melt: mixing a PP raw material and a PP auxiliary agent according to a ratio of 99: 1, inputting the mixture into a screw extruder which is correspondingly arranged, melting the mixture at 250 ℃ to obtain a PP melt, filtering the PP melt by a melt filter which is correspondingly arranged, and metering by a metering pump which is correspondingly arranged;
mixing the PBS melt obtained above with a PP melt according to a ratio of PBS to PP being 40: 60, then inputting the mixture into a spinneret orifice of the same melt-blown die head to be converged and sprayed out, directly preparing the side-by-side type bicomponent melt-blown composite fiber under the blowing action of hot air at 295 ℃ at two sides of the spinneret orifice of the melt-blown die head, and cooling and forming the bicomponent melt-blown composite fiber on a receiving device to form the PBS/PP bicomponent melt-blown fiber filtering material.
The PBS/PP double-component melt-blown fiber filter material has the fineness range of 1-7 mu m, the average fineness of 4 mu m and the fiber amount of which the fineness is not more than 1 mu m accounting for 10-15% of the total fiber amount; the thickness of the PBS/PP double-component melt-blown fiber filtering material is 100mm, the PBS/PP double-component melt-blown fiber filtering material is die-cut into a plurality of block-shaped filtering materials, the gap diameter of the filtering materials is 20-50 mu m, the porosity is 90-95%, and the specific surface area is 8000m2/m3The scale deposit rate is 10Kg-SS/m3Tests prove that the filter material of the embodiment is an ideal water filter material.
Example four,
As shown in figure 1, the manufacturing method of the PBS/PP double-component melt-blown fiber filter material adopts the following processes:
preparation of a PBS melt: the PBS starting material was dried at 90 ℃ for 4 hours, and then the PBS starting material was mixed with PBS adjuvant at a ratio of 96: 4, inputting the mixture into a screw extruder which is correspondingly arranged, melting the mixture at 220 ℃ to obtain PBS melt, filtering the PBS melt by a melt filter which is correspondingly arranged, and metering the PBS melt by a metering pump which is correspondingly arranged;
preparing a PP melt: mixing a PP raw material and a PP auxiliary agent according to a ratio of 99: 1, inputting the mixture into a screw extruder which is correspondingly arranged, melting the mixture at 250 ℃ to obtain a PP melt, filtering the PP melt by a melt filter which is correspondingly arranged, and metering by a metering pump which is correspondingly arranged;
mixing the PBS melt obtained above with a PP melt according to a ratio of PBS to PP being 50: 50 percent of the total mass of the two components are mixed, then the mixture is input into a spinneret orifice of the same melt-blown die head to be converged and sprayed out, and the two components can be directly made into parallel two-component melt-blown composite fibers under the blowing action of hot air with the temperature of 290 ℃ at two sides of the spinneret orifice of the melt-blown die head, and the two-component melt-blown composite fibers are cooled and formed on a receiving device to form the PBS/PP two-component melt-blown fiber filter material.
PBS/PP double-component melt-blown fiber filter material, the fineness range of the PBS/PP double-component melt-blown fiber filter material is 3-8 mu m,the average fineness is 5 mu m, and the fiber content with the fineness not more than 1 mu m accounts for 10-15% of the total fiber amount; the thickness of the PBS/PP double-component melt-blown fiber filtering material is 100mm, the PBS/PP double-component melt-blown fiber filtering material is die-cut into a plurality of block-shaped filtering materials, the gap diameter of the filtering materials is 10-50 mu m, the porosity is 90-95%, and the specific surface area is 8000m2/m3The scale deposit rate is 10Kg-SS/m3Tests prove that the filter material of the embodiment is an ideal water filter material.
Example V,
As shown in figure 1, the manufacturing method of the PBS/PP double-component melt-blown fiber filter material adopts the following processes:
preparation of a PBS melt: the PBS starting material was dried at 100 ℃ for 4 hours, and then the PBS starting material was mixed with PBS adjuvant at a ratio of 95.2: 4.8, inputting the mixture into a screw extruder which is correspondingly arranged, melting the mixture at 250 ℃ to obtain PBS melt, filtering the PBS melt by a melt filter which is correspondingly arranged, and metering the PBS melt by a metering pump which is correspondingly arranged;
preparing a PP melt: mixing a PP raw material and a PP auxiliary agent according to a ratio of 97.8: 1.2, inputting the mixture into a screw extruder which is correspondingly arranged, melting the mixture at 200 ℃ to obtain a PP melt, filtering the PP melt by a melt filter which is correspondingly arranged, and metering the PP melt by a metering pump which is correspondingly arranged;
mixing the PBS melt and PP melt according to the proportion that the PBS to PP is 60:40, then inputting the mixture into a spinneret orifice of the same melt-blown die head to be converged and sprayed out, directly preparing the side-by-side type bicomponent melt-blown composite fiber under the blowing action of hot air with the temperature of 280 ℃ at two sides of the spinneret orifice of the melt-blown die head, and cooling and forming the bicomponent melt-blown composite fiber on a receiving device to form the PBS/PP bicomponent melt-blown fiber filter material.
The PBS/PP double-component melt-blown fiber filter material has the fineness range of 3-10 mu m, the average fineness of 6 mu m and the fiber amount of which the fineness is not more than 1 mu m accounting for 10-15% of the total fiber amount; the thickness of the PBS/PP double-component melt-blown fiber filtering material is 99mm, the PBS/PP double-component melt-blown fiber filtering material is die-cut into a plurality of block-shaped filtering materials, the gap diameter of the filtering materials is 5-30 mu m, and the holes of the filtering materials areThe porosity is 90-95%, and the specific surface area is 8000m2/m3The scale receiving rate is 9Kg-SS/m3Tests prove that the filter material of the embodiment is an ideal water filter material.
The manufacturing method of the PBS/PP bicomponent melt-blown fiber filter material of the first to fifth embodiments adopts the following process parameters:
table 1: process parameter table of manufacturing method of PBS/PP double-component melt-blown fiber filter material
The properties of the PBS/PP bicomponent meltblown fiber filter material of examples one through five are shown in the following table:
table 2: performance table of PBS/PP double-component melt-blown fiber filter material
The invention provides a PBS/PP double-component melt-blown fiber filter material and a manufacturing method thereof, and the manufacturing method of the filter material has the advantages of short process flow, controllable preparation process and energy conservation; the obtained filtering material has three-dimensional pores inside, can intercept and adsorb impurities with different sizes respectively, not only increases the filtering area and the pollutant carrying capacity of the filtering material, but also has higher strength, and ensures that the filtering material has the advantages of strong filtering property, good filtering effect, durability, good hydrophilic water filtering property, easy back flushing, water saving, high efficiency and the like.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (3)
1. A manufacturing method of a PBS/PP double-component melt-blown fiber filter material is characterized in that: the titer range of the PBS/PP double-component melt-blown fiber filter material is 0.8-10 mu m, the average titer is 4-6 mu m, and the fiber amount of which the titer is not more than 1 mu m accounts for 10-15% of the total fiber amount; the thickness of the PBS/PP double-component melt-blown fiber filter material is 100 +/-2 mm, the PBS/PP double-component melt-blown fiber filter material is die-cut into a plurality of blocky filter materials, the gap diameter of the filter materials is 5-70 mu m, the porosity is 90-95%, the specific surface area is 8000m2/m3, and the scale receiving rate is (9-11) Kg-SS/m 3;
the manufacturing method of the PBS/PP double-component melt-blown fiber filter material adopts the following processes:
preparation of a PBS melt: drying the PBS raw material at 80-100 ℃ for 2-4 hours, and then mixing the PBS raw material with a PBS auxiliary agent according to the weight ratio of (96.8-95.2): (3.2-4.8), inputting into a screw extruder which is correspondingly arranged, melting at the temperature of 190 ℃ and 250 ℃ to obtain PBS melt, filtering the PBS melt through a melt filter which is correspondingly arranged, and metering by a metering pump which is correspondingly arranged;
preparing a PP melt: mixing a PP raw material and a PP auxiliary agent according to the ratio of (97.8-99.2): (1.2-0.8), inputting into a screw extruder which is correspondingly arranged, melting at the temperature of 200-270 ℃ to obtain PP melt, filtering the PP melt through a melt filter which is correspondingly arranged, and metering by a metering pump which is correspondingly arranged;
mixing the PBS melt obtained above with a PP melt according to the ratio of PBS to PP (30-60): (70-40), then inputting the mixture into a spinneret orifice of the same melt-blown die head to be converged and sprayed out, directly preparing the parallel type bicomponent melt-blown composite fiber under the blowing action of hot air at the temperature of 280-300 ℃ at two sides of the spinneret orifice of the melt-blown die head, and cooling and forming the bicomponent melt-blown composite fiber on a receiving device to form a PBS/PP bicomponent melt-blown fiber filter material;
the PBS auxiliary agent is obtained by mixing triethyl citrate and polyethylene glycol according to the mass percentage of 60: 40;
the PP auxiliary agent is obtained by mixing the antistatic master batch and the antioxidant according to the mass percentage of 70: 30.
2. The method of manufacturing a PBS/PP bicomponent melt-blown fiber filter material according to claim 1, wherein: and die cutting the PBS/PP double-component melt-blown fiber filtering material to obtain a plurality of blocky filtering materials.
3. The method of manufacturing a PBS/PP bicomponent melt-blown fiber filter material according to claim 1, wherein: the antioxidant is triphenyl phosphite.
Priority Applications (1)
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