CN112138468A - Efficient acid-base-resistant filtering material and preparation method thereof - Google Patents
Efficient acid-base-resistant filtering material and preparation method thereof Download PDFInfo
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- CN112138468A CN112138468A CN202010837662.XA CN202010837662A CN112138468A CN 112138468 A CN112138468 A CN 112138468A CN 202010837662 A CN202010837662 A CN 202010837662A CN 112138468 A CN112138468 A CN 112138468A
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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
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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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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- Textile Engineering (AREA)
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Abstract
The invention discloses a high-efficiency acid-base-resistant filtering material which comprises a protective layer, wherein a non-woven fabric layer and a composite layer are sequentially arranged below the protective layer, the composite layer comprises a first filtering layer and a second filtering layer, one side of the non-woven fabric layer is bonded with the protective layer, the other side of the non-woven fabric layer is bonded with one side of the first filtering layer, the other side of the first filtering layer is bonded with one side of the second filtering layer, the first filtering layer comprises polyether-ether-ketone emulsion, polyvinyl chloride emulsion, phosphate and polyurethane emulsion, the second filtering layer comprises polytetrafluoroethylene emulsion, polypropylene emulsion, polyamide emulsion and polyphenylene sulfide emulsion, and the preparation method comprises the steps of mixing and stirring once, processing once, mixing and stirring twice, processing the composite layer, manufacturing the. The filtering material has the advantages of excellent acid and alkali resistance, good filtering effect, long service life and suitability for acid and alkali working environments.
Description
Technical Field
The invention relates to a filter material, in particular to a high-efficiency acid-base resistant filter material and a preparation method thereof.
Background
The existing environmental pollution is serious, and the detection indexes of industrial pollutants mainly include three categories, namely air pollution, solid waste pollution and water pollution. Wherein the atmospheric pollutants comprise SO2, industrial dust and smoke dust; the industrial solid waste comprises smelting waste residue, fly ash, furnace slag, coal gangue, tailings and other solid waste; the water pollutants comprise general inorganic and organic pollutants, harmful heavy metals and the like, wherein volatile phenol, cyanide, chemical oxygen demand, petroleum waste and ammonia nitrogen belong to the general inorganic or organic pollutants, and the harmful heavy metals comprise mercury, cadmium, hexavalent chromium, lead and the like. The pollutants have high corrosivity, so that a filtering material with high acid and alkali resistance is needed, and the common filtering material can not meet the requirements of filtering standards in the industries of garbage treatment, chemical engineering, heavy industry and the like. The existing high-efficiency filter material has the disadvantages of high price, common filter effect, poor acid and alkali resistance and poor impact resistance.
Disclosure of Invention
The invention aims to provide a high-efficiency acid-base-resistant filter material and a preparation method thereof, the filter material has the advantages of strong filter effect, good acid and alkali resistance, long service life, good filter effect, improved filter effect, reduced replacement frequency, lowered cost, excellent impact resistance, suitability for resisting impact of sundries, enhanced filter effect and stable filter process.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a high-efficient acid and alkali-resistance filtering material, filtering material include the inoxidizing coating, inoxidizing coating below is equipped with non-woven fabrics layer and composite bed in proper order, and the composite bed includes first filter layer and second filter layer, and non-woven fabrics layer one side is bonded with the inoxidizing coating, and the opposite side is bonded with one side of first filter layer, and the opposite side of first filter layer is bonded with one side of second filter layer.
The first filter layer comprises the following raw material components in parts by mass: 10-20 parts of polyether-ether-ketone emulsion, 2-9 parts of polyvinyl chloride emulsion, 4-7 parts of phosphate and 6-9 parts of polyurethane emulsion.
The second filter layer comprises the following raw material components in parts by mass: 10-20 parts of polytetrafluoroethylene emulsion, 1-5 parts of polypropylene emulsion, 3-6 parts of polyamide emulsion and 5-10 parts of polyphenylene sulfide emulsion.
Furthermore, the protective layer is a net structure formed by opening and carding one of polyvinyl chloride fibers, polyisobutylene fibers, polyethylene fibers and polyurethane fibers, and the non-woven fabric layer is formed by opening, air-laying, needling and hot rolling reinforcement of polypropylene fibers serving as a main raw material.
The preparation method of the high-efficiency acid-alkali-resistant filtering material comprises the following steps:
s1, primary mixing and stirring
Selecting high-quality polyether-ether-ketone emulsion, polyvinyl chloride emulsion, phosphate and polyurethane emulsion, mixing and stirring to form a first mixed solution;
s2, primary processing
Spinning and stretching the first mixed solution at high temperature to obtain first mixed fibers, and sequentially performing air-laid, spunlace and hot rolling reinforcement on the first mixed fibers to obtain a first filter layer;
s3, mixing and stirring for the second time
Selecting high-quality polytetrafluoroethylene emulsion, polypropylene emulsion, polyamide emulsion and polyphenylene sulfide emulsion, mixing and stirring the first mixed solution and the second mixed solution;
s4, secondary processing
Spinning and stretching the second mixed solution at high temperature to obtain second mixed fibers, and sequentially carrying out air flow weighing, spunlacing and hot rolling on the second mixed fibers to obtain a second filter layer;
s5 processing composite layer
Bonding the first filter layer on the second filter layer to obtain a pre-composite layer, and cleaning and drying the pre-composite layer at high temperature to obtain a composite layer;
s6, manufacturing a protective layer and a non-woven fabric layer
Selecting one of polyvinyl chloride fiber, polyisobutylene fiber, polyethylene fiber and polyurethane fiber, forming a protective layer after opening and carding web formation, and selecting polypropylene fiber, and forming a non-woven fabric layer after opening, air-laying, needling, hot rolling and reinforcing;
s7, adhesive product
One side of the non-woven fabric layer is bonded with one side of the first filter layer, and the other side of the non-woven fabric layer is bonded with one side of the protective layer.
Further, the temperature of the high-temperature stretching in the S2 is 400-500 ℃.
Further, the thickness of the first filter layer formed in S2 is 5 to 11 um.
Further, the temperature of the high-temperature stretching in the S4 is 500-600 ℃.
Further, the thickness of the second filter layer formed in S4 is 3 to 6 um.
Further, the thickness of the protective layer and the nonwoven fabric layer formed in S6 is 2-6 um.
Further, the adhesive used for bonding in S7 is polyvinyl alcohol.
The invention has the beneficial effects that:
1. the filtering material has the advantages of strong filtering effect, good acid resistance and alkali resistance, long service life and good filtering effect, improves the filtering effect, reduces the replacement frequency and reduces the cost;
2. the filter material has excellent impact resistance, is suitable for resisting the impact of impurities, enhances the filtering effect and ensures the stable operation of the filtering process.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the structure of a filter material according to the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a high-efficient acid and alkali-resistance filter material, as shown in figure 1, filter material includes inoxidizing coating 1, and inoxidizing coating 1 below is equipped with non-woven fabrics layer 2 and composite bed 3 in proper order, and composite bed 3 includes first filter layer 31 and second filter layer 32, and 2 one sides on the non-woven fabrics layer are bonded with inoxidizing coating 1, and the opposite side is bonded with one side of first filter layer 31, and the opposite side of first filter layer 31 is bonded with one side of second filter layer 32. The protective layer 1 is a net structure formed by opening and carding one of polyvinyl chloride fibers, polyisobutylene fibers, polyethylene fibers and polyurethane fibers into a net, and the non-woven fabric layer 2 is formed by opening, air-laying, needling, hot rolling and reinforcing polypropylene fibers serving as main raw materials.
The first filter layer 31 comprises the following raw material components in parts by mass: 10-20 parts of polyether-ether-ketone emulsion, 2-9 parts of polyvinyl chloride emulsion, 4-7 parts of phosphate and 6-9 parts of polyurethane emulsion.
The second filter layer 32 comprises the following raw material components in parts by mass: 10-20 parts of polytetrafluoroethylene emulsion, 1-5 parts of polypropylene emulsion, 3-6 parts of polyamide emulsion and 5-10 parts of polyphenylene sulfide emulsion.
The preparation method of the high-efficiency acid-alkali-resistant filtering material comprises the following steps:
s1, primary mixing and stirring
Selecting high-quality polyether-ether-ketone emulsion, polyvinyl chloride emulsion, phosphate and polyurethane emulsion, mixing and stirring to form a first mixed solution;
s2, primary processing
Spinning and stretching the first mixed solution at high temperature to obtain first mixed fibers, and sequentially performing air-laid, spunlace and hot rolling reinforcement on the first mixed fibers to obtain a first filter layer 31;
s3, mixing and stirring for the second time
Selecting high-quality polytetrafluoroethylene emulsion, polypropylene emulsion, polyamide emulsion and polyphenylene sulfide emulsion, mixing and stirring the first mixed solution and the second mixed solution;
s4, secondary processing
Spinning and stretching the second mixed solution at high temperature to obtain second mixed fibers, and sequentially carrying out air flow weighing, spunlacing and hot rolling on the second mixed fibers to obtain a second filter layer 32;
s5 processing composite layer
Bonding the first filter layer 31 on the second filter layer 32 to obtain a pre-composite layer, and cleaning and drying the pre-composite layer at high temperature to obtain a composite layer 3;
s6, manufacturing a protective layer and a non-woven fabric layer
Selecting one of polyvinyl chloride fiber, polyisobutylene fiber, polyethylene fiber and polyurethane fiber, forming a protective layer 1 after opening and carding web formation, and selecting polypropylene fiber, and forming a non-woven fabric layer 2 after opening, air-laying, needling and hot rolling reinforcement;
s7, adhesive product
One side of the nonwoven fabric layer 2 is bonded to one side of the first filter layer 31, and the other side is bonded to one side of the protective layer 1.
Wherein the binder is polyvinyl alcohol.
The invention is further described below by way of a few examples.
Example 1
S1, primary mixing and stirring
Selecting high-quality 10 kg of polyether-ether-ketone emulsion, 2 kg of polyvinyl chloride emulsion, 4 kg of phosphate and 6 kg of polyurethane emulsion, mixing and stirring to form a first mixed solution;
s2, primary processing
Spinning and stretching the first mixed solution at 400 ℃ to obtain first mixed fibers, and sequentially performing air-laid, spunlace and hot rolling reinforcement on the first mixed fibers to obtain a first filter layer 31 with the thickness of 5 microns;
s3, mixing and stirring for the second time
Selecting high-quality 10 kg of polytetrafluoroethylene emulsion, 1 kg of polypropylene emulsion, 3 kg of polyamide emulsion and 5 kg of polyphenylene sulfide emulsion, mixing and stirring the first mixed solution and the second mixed solution;
s4, secondary processing
Spinning and stretching the second mixed solution at 500 ℃ to obtain second mixed fibers, and sequentially carrying out air flow weighing, spunlacing and hot rolling on the second mixed fibers to obtain a second filter layer 32 with the thickness of 3 um;
s5 processing composite layer
Bonding the first filter layer 31 on the second filter layer 32 to obtain a pre-composite layer, and cleaning and drying the pre-composite layer at high temperature to obtain a composite layer 3;
s6, manufacturing a protective layer and a non-woven fabric layer
Selecting one of polyvinyl chloride fiber, polyisobutylene fiber, polyethylene fiber and polyurethane fiber, forming a protective layer 1 with the thickness of 2um after opening and carding web formation, and selecting polypropylene fiber, and forming a non-woven fabric layer 2 with the thickness of 2um after opening, air-laying, needling and hot rolling reinforcement;
s7, adhesive product
One side of the nonwoven fabric layer 2 is bonded to one side of the first filter layer 31, and the other side is bonded to one side of the protective layer 1.
Example 2
S1, primary mixing and stirring
Selecting high-quality 20 kg of polyether-ether-ketone emulsion, 9 kg of polyvinyl chloride emulsion, 7 kg of phosphate and 9 kg of polyurethane emulsion, mixing and stirring to form a first mixed solution;
s2, primary processing
Spinning and stretching the first mixed solution at 500 ℃ to obtain first mixed fibers, and sequentially performing air-laid, spunlace and hot rolling reinforcement on the first mixed fibers to obtain a first filter layer 31 with the thickness of 11 microns;
s3, mixing and stirring for the second time
Selecting high-quality 20 kg of polytetrafluoroethylene emulsion, 5 kg of polypropylene emulsion, 6 kg of polyamide emulsion and 10 kg of polyphenylene sulfide emulsion, mixing and stirring the first mixed solution and the second mixed solution;
s4, secondary processing
Spinning and stretching the second mixed solution at 600 ℃ to obtain second mixed fibers, and sequentially carrying out air flow weighing, spunlacing and hot rolling on the second mixed fibers to obtain a second filter layer 32 with the thickness of 6 um;
s5 processing composite layer
Bonding the first filter layer 31 on the second filter layer 32 to obtain a pre-composite layer, and cleaning and drying the pre-composite layer at high temperature to obtain a composite layer 3;
s6, manufacturing a protective layer and a non-woven fabric layer
Selecting one of polyvinyl chloride fiber, polyisobutylene fiber, polyethylene fiber and polyurethane fiber, forming a 6um protective layer 1 after opening and carding web formation, and selecting polypropylene fiber, and forming a 6um non-woven fabric layer 2 after opening, air-laying, needling and hot rolling reinforcement;
s7, adhesive product
One side of the nonwoven fabric layer 2 is bonded to one side of the first filter layer 31, and the other side is bonded to one side of the protective layer 1.
Example 3
S1, primary mixing and stirring
Selecting high-quality 15 kg of polyether-ether-ketone emulsion, 4 kg of polyvinyl chloride emulsion, 5 kg of phosphate and 7 kg of polyurethane emulsion, mixing and stirring to form a first mixed solution;
s2, primary processing
Spinning and stretching the first mixed solution at 440 ℃ to obtain first mixed fibers, and sequentially performing air-laying, spunlacing and hot rolling reinforcement on the first mixed fibers to obtain a first filter layer 31 with the thickness of 7 um;
s3, mixing and stirring for the second time
Selecting high-quality 15 kg of polytetrafluoroethylene emulsion, 2 kg of polypropylene emulsion, 4 kg of polyamide emulsion and 7 kg of polyphenylene sulfide emulsion, mixing and stirring the first mixed solution and the second mixed solution;
s4, secondary processing
Spinning and stretching the second mixed solution at 540 ℃ to obtain second mixed fibers, and sequentially carrying out air flow weighing, spunlacing and hot rolling on the second mixed fibers to obtain a second filter layer 32 with the thickness of 4 um;
s5 processing composite layer
Bonding the first filter layer 31 on the second filter layer 32 to obtain a pre-composite layer, and cleaning and drying the pre-composite layer at high temperature to obtain a composite layer 3;
s6, manufacturing a protective layer and a non-woven fabric layer
Selecting one of polyvinyl chloride fiber, polyisobutylene fiber, polyethylene fiber and polyurethane fiber, forming a protective layer 1 with the thickness of 3um after opening and carding web formation, and selecting polypropylene fiber, and forming a non-woven fabric layer 2 with the thickness of 3um after opening, air-laying, needling and hot rolling reinforcement;
s7, adhesive product
One side of the nonwoven fabric layer 2 is bonded to one side of the first filter layer 31, and the other side is bonded to one side of the protective layer 1.
Example 4
S1, primary mixing and stirring
Selecting high-quality 18 kg of polyether-ether-ketone emulsion, 7 kg of polyvinyl chloride emulsion, 6 kg of phosphate and 8 kg of polyurethane emulsion, mixing and stirring to form a first mixed solution;
s2, primary processing
Spinning and stretching the first mixed solution at 480 ℃ to obtain first mixed fibers, and sequentially performing air-laid, spunlace and hot rolling reinforcement on the first mixed fibers to obtain a first filter layer 31 with the thickness of 9 microns;
s3, mixing and stirring for the second time
Selecting high-quality 18 kg of polytetrafluoroethylene emulsion, 4 kg of polypropylene emulsion, 5 kg of polyamide emulsion and 8 kg of polyphenylene sulfide emulsion, mixing and stirring the first mixed solution and the second mixed solution;
s4, secondary processing
Spinning and stretching the second mixed solution at 580 ℃ to obtain second mixed fibers, and sequentially carrying out air flow weighing, spunlacing and hot rolling on the second mixed fibers to obtain a second filter layer 32 with the thickness of 5 um;
s5 processing composite layer
Bonding the first filter layer 31 on the second filter layer 32 to obtain a pre-composite layer, and cleaning and drying the pre-composite layer at high temperature to obtain a composite layer 3;
s6, manufacturing a protective layer and a non-woven fabric layer
Selecting one of polyvinyl chloride fiber, polyisobutylene fiber, polyethylene fiber and polyurethane fiber, forming a protective layer 1 with the thickness of 4um after opening and carding web formation, and selecting polypropylene fiber, and forming a non-woven fabric layer 2 with the thickness of 4um after opening, air-laying, needling and hot rolling reinforcement;
s7, adhesive product
One side of the nonwoven fabric layer 2 is bonded to one side of the first filter layer 31, and the other side is bonded to one side of the protective layer 1.
The comparison of the above examples with the prior art is shown in the table below.
| Example (A) | Acid resistance | Filtering effect | Alkali resistance | Service life | Impact resistance |
| Example 1 | High strength | Superior food | High strength | 30 days | High strength |
| Example 2 | High strength | Superior food | High strength | 60 days | High strength |
| Example 3 | High strength | Superior food | High strength | 40 days | High strength |
| Example 4 | High strength | Superior food | High strength | 50 days | High strength |
| Prior Art | Intolerance of strong acid | In general | Is stronger | 15 days | Weak (weak) |
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (9)
1. A high-efficiency acid-base-resistant filter material comprises an protective layer (1), and is characterized in that a non-woven fabric layer (2) and a composite layer (3) are sequentially arranged below the protective layer (1), the composite layer (3) comprises a first filter layer (31) and a second filter layer (32), one side of the non-woven fabric layer (2) is bonded with the protective layer (1), the other side of the non-woven fabric layer is bonded with one side of the first filter layer (31), and the other side of the first filter layer (31) is bonded with one side of the second filter layer (32);
the first filter layer (31) comprises the following raw material components in parts by mass: 10-20 parts of polyether-ether-ketone emulsion, 2-9 parts of polyvinyl chloride emulsion, 4-7 parts of phosphate and 6-9 parts of polyurethane emulsion;
the second filter layer (32) comprises the following raw material components in parts by mass: 10-20 parts of polytetrafluoroethylene emulsion, 1-5 parts of polypropylene emulsion, 3-6 parts of polyamide emulsion and 5-10 parts of polyphenylene sulfide emulsion.
2. The filter material according to claim 1, wherein the protective layer (1) is a net structure formed by opening and carding one of polyvinyl chloride fiber, polyisobutylene fiber, polyethylene fiber and polyurethane fiber, and the non-woven fabric layer (2) is formed by opening, air-laying, needling and hot rolling reinforcement of polypropylene fiber as a main raw material.
3. The preparation method of the high-efficiency acid-and-alkali-resistant filter material as claimed in any one of claims 1 and 2, which is characterized by comprising the following steps:
s1, primary mixing and stirring
Selecting high-quality polyether-ether-ketone emulsion, polyvinyl chloride emulsion, phosphate and polyurethane emulsion, mixing and stirring to form a first mixed solution;
s2, primary processing
Spinning and stretching the first mixed solution at high temperature to obtain first mixed fibers, and sequentially performing air-laid, spunlace and hot rolling reinforcement on the first mixed fibers to obtain a first filter layer (31);
s3, mixing and stirring for the second time
Selecting high-quality polytetrafluoroethylene emulsion, polypropylene emulsion, polyamide emulsion and polyphenylene sulfide emulsion, mixing and stirring the first mixed solution and the second mixed solution;
s4, secondary processing
Spinning and stretching the second mixed solution at high temperature to obtain second mixed fibers, and sequentially carrying out air flow weighing, spunlacing and hot rolling on the second mixed fibers to obtain a second filter layer (32);
s5 processing composite layer
Bonding the first filter layer (31) on the second filter layer (32) to obtain a pre-composite layer, and cleaning and drying the pre-composite layer at high temperature to obtain a composite layer (3);
s6, manufacturing a protective layer and a non-woven fabric layer
Selecting one of polyvinyl chloride fiber, polyisobutylene fiber, polyethylene fiber and polyurethane fiber, forming a protective layer (1) after opening and carding web formation, and selecting polypropylene fiber, and forming a non-woven fabric layer (2) after opening, air-laying, needling and hot rolling reinforcement;
s7, adhesive product
One side of the non-woven fabric layer (2) is bonded with one side of the first filter layer (31), and the other side is bonded with one side of the protective layer (1).
4. The method as claimed in claim 3, wherein the temperature of the high temperature stretching in S2 is 400-500 ℃.
5. The method for preparing a filter material with high efficiency and acid and alkali resistance according to claim 3, wherein the thickness of the first filter layer (31) formed in S2 is 5-11 um.
6. The method as claimed in claim 3, wherein the temperature of the high temperature stretching in S4 is 500-600 ℃.
7. The method for preparing a filter material with high efficiency and acid and alkali resistance according to claim 3, wherein the thickness of the second filter layer (32) formed in S4 is 3-6 um.
8. The method for preparing a filter material with high efficiency and acid and alkali resistance according to claim 3, wherein the thickness of the protective layer (1) and the non-woven fabric layer (2) formed in S6 is 2-6 um.
9. The method for preparing a filter material with high efficiency and acid and alkali resistance as claimed in claim 3, wherein the adhesive used in S7 is polyvinyl alcohol.
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Citations (4)
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|---|---|---|---|---|
| US20160175752A1 (en) * | 2014-12-19 | 2016-06-23 | Hollingsworth & Vose Company | Filter media comprising a pre-filter layer |
| CN206778027U (en) * | 2017-04-27 | 2017-12-22 | 崇义县威骏高分子功能材料科技有限公司 | A kind of high filtration PM2.5 nonwoven fabric construct |
| US20180169551A1 (en) * | 2016-12-15 | 2018-06-21 | Hollingsworth & Vose Company | Filter media including adhesives and/or oleophobic properties |
| CN108499222A (en) * | 2018-03-29 | 2018-09-07 | 吉林大学 | A kind of polyether-ether-ketone filter felt and preparation method thereof |
-
2020
- 2020-08-19 CN CN202010837662.XA patent/CN112138468A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160175752A1 (en) * | 2014-12-19 | 2016-06-23 | Hollingsworth & Vose Company | Filter media comprising a pre-filter layer |
| US20180169551A1 (en) * | 2016-12-15 | 2018-06-21 | Hollingsworth & Vose Company | Filter media including adhesives and/or oleophobic properties |
| CN206778027U (en) * | 2017-04-27 | 2017-12-22 | 崇义县威骏高分子功能材料科技有限公司 | A kind of high filtration PM2.5 nonwoven fabric construct |
| CN108499222A (en) * | 2018-03-29 | 2018-09-07 | 吉林大学 | A kind of polyether-ether-ketone filter felt and preparation method thereof |
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Application publication date: 20201229 |