CN118203908A - High-efficiency composite air filtering material with high dust holding capacity and preparation method thereof - Google Patents
High-efficiency composite air filtering material with high dust holding capacity and preparation method thereof Download PDFInfo
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- CN118203908A CN118203908A CN202410333099.0A CN202410333099A CN118203908A CN 118203908 A CN118203908 A CN 118203908A CN 202410333099 A CN202410333099 A CN 202410333099A CN 118203908 A CN118203908 A CN 118203908A
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- 239000000463 material Substances 0.000 title claims abstract description 145
- 239000000428 dust Substances 0.000 title claims abstract description 105
- 238000001914 filtration Methods 0.000 title claims abstract description 61
- 239000002131 composite material Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 68
- 239000011148 porous material Substances 0.000 claims abstract description 14
- 239000004744 fabric Substances 0.000 claims description 32
- 239000004750 melt-blown nonwoven Substances 0.000 claims description 27
- 239000004831 Hot glue Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 10
- 239000005871 repellent Substances 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 2
- 230000000844 anti-bacterial effect Effects 0.000 claims description 2
- 239000003063 flame retardant Substances 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 75
- 238000012360 testing method Methods 0.000 description 36
- 235000019504 cigarettes Nutrition 0.000 description 21
- 239000002356 single layer Substances 0.000 description 21
- 238000003825 pressing Methods 0.000 description 20
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 10
- 239000000835 fiber Substances 0.000 description 10
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 238000010030 laminating Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000011780 sodium chloride Substances 0.000 description 5
- 238000011045 prefiltration Methods 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
-
- 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
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0414—Surface modifiers, e.g. comprising ion exchange groups
-
- 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
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0442—Antimicrobial, antibacterial, antifungal additives
-
- 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
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0457—Specific fire retardant or heat resistant properties
-
- 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
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0681—The layers being joined by gluing
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Filtering Materials (AREA)
Abstract
The invention relates to the technical field of air filter materials, and discloses a high-efficiency composite air filter material with high dust holding capacity and a preparation method thereof, wherein the high-efficiency composite air filter material comprises two non-woven fabric filter layers and a dust holding material layer positioned between the two non-woven fabric filter layers; the pores in the dust-holding material layer are larger than those in the non-woven filter layer; according to the invention, the two non-woven fabric filter layers are compounded with the dust containing material layer of the middle layer, so that the dust containing capacity of the filter material can be effectively improved while the filtering efficiency is ensured, the resistance can not be increased, the larger pores of the dust containing material layer can form a hollow cavity structure between the two non-woven fabric filter layers, and the dirt containing space between the non-woven fabric filter layers is greatly improved, thereby effectively improving the dust containing capacity of the filter material, enabling the filter material to have a high CCM value and remarkably prolonging the service life of the filter material.
Description
Technical Field
The invention relates to the technical field of air filtering materials, in particular to a high-efficiency composite air filtering material with high dust holding capacity and a preparation method thereof.
Background
People have increasingly high demands on air quality, especially in the domestic environment. Therefore, the demand for air filter materials is increasing, and the demand for the filter performance is also increasing. The cumulative purifying amount (CCM value) of the air purifier refers to a parameter of the cumulative purifying capacity of the air purifier for particulate matters and gaseous pollutants under a specified test condition, and is related to the dust holding amount of the filter material; the CCM value is an important parameter index for measuring the performance of the air purifier, and the larger the CCM value is, the longer the service life of the air filtering material is.
The filtering efficiency, the filtering resistance and the dust holding capacity are three important parameters for evaluating the filtering performance of the air filtering material, the filtering efficiency is the primary basis of classification of the filtering product, and whether the air can meet the purifying requirement is determined; the filtering resistance and the dust holding capacity are important indexes for distinguishing the quality of products, and the lower the filtering resistance is, the smaller the air inlet load is during air filtering, so that the running cost is reduced; the filter life tends to be higher if the dust holding amount of the filter medium is high. In the prior art, the filtering efficiency of the filtering material, the filtering resistance and the dust holding capacity of the filtering material are generally changed reversely, and the higher the filtering efficiency is, the larger the filtering resistance is, and the lower the dirt holding capacity is; therefore, how to make the filter material possess high filtration efficiency, reduce its filtration resistance and increase its dust holding capacity is a technical problem to be solved in the art.
The filter bag is made of dust-containing filter materials, and various structures of the presently disclosed dust-containing filter materials exist, such as a V-shaped opening technology filter bag with large dust-containing capacity disclosed in CN113426214A, and three dust-containing filter bag structures of hot air cotton-double-layer melt-blown cloth-spun-bonded cloth, glass fiber cotton-spun-bonded cloth and hot air cotton-wave-melt-blown cloth-hot air cotton-non-woven cloth are disclosed in the scheme; the dust-holding filter material is a melt-blown fiber prefilter layer-melt-blown fiber filter layer-spun-bonded non-woven fabric protective layer structure as disclosed in publication No. CN 116116114A; the structure of the dust-containing filter material at present mainly comprises a pre-filter layer for pre-filtering dust particles, a filter layer for filtering air and a protective layer for protecting and supporting according to the function classification, wherein the main material of the protective layer is spun-bonded non-woven fabric, the material of the filter layer mainly comprises glass fiber cotton and melt-blown fibers, and the material of the pre-filter layer comprises fiber cloth with fluffy structures such as non-woven fabric, hot air cotton and the like; the large particulate matters of dust in the air can be intercepted by the pre-filtering layer in the use process, the resistance of dust particles to the filtering layer can be slowed down, the service life of the filtering bag is prolonged, the influence of the internal structure of the pre-filtering layer on the dust holding capacity of the filtering bag is large, and therefore the influence of the internal structure of the improved pre-filtering layer on the speed of the rising of the resistance of the filtering bag and the service life of the filtering bag is large.
Disclosure of Invention
The invention provides a high-efficiency composite air filter material with high dust holding capacity and a preparation method thereof, which aim to solve the problems that the air filter material in the prior art is difficult to have high filter efficiency, low filter resistance and high dust holding capacity.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
A high-efficiency composite air filter material with high dust holding capacity comprises two non-woven fabric filter layers and a dust holding material layer positioned between the two non-woven fabric filter layers; the pores in the dust-containing material layer are larger than the pores in the non-woven filter layer.
The dust-containing material layer is arranged between the two non-woven fabric filter layers, and the non-woven fabric filter layers on the two sides have smaller pores, so that good trapping effect on particulate matters can be ensured, and the filtering efficiency of the filtering material is ensured; the dust containing material layer of the middle layer has larger pores, a hollow cavity structure is formed between the two non-woven fabric filter layers, and the dirt containing space between the non-woven fabric filter layers is greatly improved, so that the dust containing capacity of the filter material can be effectively improved, the filter material has a high CCM value, and the service life of the filter material is obviously prolonged; the invention arranges the dust containing material layer with larger pores between the non-woven fabric filter layers, increases the material thickness, improves the filtering efficiency, and simultaneously, as the middle dust containing material layer has larger pores, compared with single-layer materials with the same gram weight, the invention can not increase the resistance of the materials, can ensure that the filtering material has high filtering efficiency, high dust containing capacity and lower resistance, and is suitable for household purifiers, fresh air systems and the like.
Preferably, the nonwoven filter layer is a meltblown nonwoven.
Preferably, the gram weight of the melt-blown non-woven fabric is 12-30 g/m 2, and the thickness is 0.15-0.30 mm.
Preferably, the dust-containing material layer is selected from one or more of hot-rolled non-woven fabrics, spun-bonded non-woven fabrics and plastic mesh fabrics.
The fiber diameter of the non-woven filter layer is 1-5 mu m, the super fiber with a unique capillary structure can increase the number and the surface area of the fiber on the unit area, the pore is small, the porosity is high, the structure is fluffy, the filtering performance is excellent, and the filtering efficiency of the composite filtering material is improved; the fiber diameter of the dust containing material layer is 15-30 mu m, the fiber diameter of the dust containing material layer is larger than the fiber diameter of the non-woven filter layer, the pores of the spun-bonded non-woven fabric are smaller than those of the melt-blown non-woven fabric, and the spun-bonded non-woven fabric is used as the dust containing material layer to be compounded with the melt-blown non-woven fabric, so that the dust containing capacity of the filter material can be improved, the filter resistance can be reduced, the strength is high, the breaking elongation is high, and the mechanical property of the filter material can be improved.
Preferably, the gram weight of the dust-containing material layer is 5-50 g/m 2, and the thickness is 0.10-0.30 mm.
Preferably, the dust-containing material layer is selected from one or more of a water-repellent and oil-repellent material, a flame-retardant material and an antibacterial material.
The preparation method of the high-efficiency composite air filtering material with high dust holding capacity comprises the following steps: and sequentially bonding the non-woven fabric filter layer, the dust containing material layer and the non-woven fabric filter layer by adopting hot melt adhesive to prepare the high-efficiency composite air filter material with high dust containing capacity.
Preferably, the conditions of the spinning composite process include: the dosage of the hot melt adhesive is 0.2-1.0 g/m 2.
Preferably, the hot melt adhesive is a polyolefin.
Compared with the prior art, the invention has the following beneficial effects:
(1) The two non-woven fabric filter layers are compounded with the dust containing material layer, so that the thickness of the filter material is increased, and the filter efficiency of the composite material is improved;
(2) The pores of the dust-containing material layer of the middle layer are larger, the influence on the whole structural resistance is small, and compared with a single-layer non-woven fabric filter layer with the same gram weight, the resistance is unchanged;
(3) The larger pores of the dust containing material layer can form a hollow cavity structure between two non-woven fabric filter layers, so that the dirt containing space between the non-woven fabric filter layers is greatly improved, and the dust containing capacity of the filter material can be effectively improved, so that the filter material has a high CCM value;
(4) The filter material can be applied to household purifiers, fresh air systems and the like, and compared with products with the same effect in the market, the filter material can reduce the manufacturing cost by 30%.
Detailed Description
The invention is further described below with reference to examples.
Example 1: (melt-blown nonwoven and spun-bonded nonwoven)
The high-efficiency composite air filtering material with high dust holding capacity comprises two non-woven fabric filtering layers and a dust holding material layer positioned between the two non-woven fabric filtering layers, wherein the non-woven fabric filtering layers adopt melt-blown non-woven fabrics, the gram weight of the single-layer melt-blown non-woven fabrics is 16g/m 2, and the thickness is 0.15mm to 0.20mm; the dust-containing material layer is made of spun-bonded non-woven fabrics, the gram weight of the spun-bonded non-woven fabrics is 13g/m 2, and the thickness is 0.05mm to 0.10mm.
The preparation method of the high-efficiency composite air filtering material with high dust holding capacity comprises the following steps: the method comprises the steps of sequentially laminating a melt-blown non-woven fabric, a low-temperature hot melt adhesive film, a spun-bonded non-woven fabric, a low-temperature hot melt adhesive film and a melt-blown non-woven fabric to prepare a prefabricated body by adopting a low-temperature hot melt adhesive film (model HY-G7065Z, melting point 65 ℃ and use temperature 80 ℃), placing the prefabricated body on a pressing machine, setting the working temperature of the pressing machine to be 80 ℃, pressing for 5min, and starting the pressing machine to compound the prefabricated body to prepare the high-efficiency composite air filter material with high dust holding capacity.
The single-layer non-woven fabric filter material and the high-efficiency composite air filter material with high dust holding capacity in example 1 were subjected to a cigarette tolerance test to test the CCM value thereof;
the testing instrument adopts a TSI8130A to test the flow rate of 32LPM; testing medium NaCl; media generator TSI8130A; salt generator TSI8530; a dust meter KAZ air purifier; solid-state pollutant generating device: a cigarette; the test area is 270mm by 200mm; the test results are shown in Table 1.
Table 1: CCM values of Single layer nonwoven Filter Material and high dust holding high efficiency composite air Filter Material of example 1
As shown in the results of Table 1, the initial efficiency of the single-layer non-woven fabric filter material is 99.98%, the termination efficiency is 47.278%, the cigarette tolerance performance is 782mg, the CCM value is 14481.4mg/m 2, the initial efficiency of the high-dust-holding-capacity high-efficiency composite air filter material is 99.983%, the termination efficiency is 48.043%, the cigarette tolerance is 791.9mg, and the CCM value is 14664.8mg/m 2.
Example 2: (melt-blown nonwoven and spun-bonded nonwoven)
The utility model provides a high-efficient composite air filter material of high dust volume, includes two-layer non-woven fabrics filter layer and is located the dust volume material layer between two-layer non-woven fabrics filter layer, and the non-woven fabrics filter layer adopts the melt-blown non-woven fabrics, and the gram weight of individual layer is 12g/m 2, and thickness 0.15mm to 0.20mm, holds the dust material layer and adopts the spun-bonded non-woven fabrics, and the gram weight is 13g/m 2, thickness 0.05mm to 0.10mm.
The preparation method of the high-efficiency composite air filtering material with high dust holding capacity comprises the following steps: the method comprises the steps of sequentially laminating a melt-blown non-woven fabric, a low-temperature hot melt adhesive film, a spun-bonded non-woven fabric, a low-temperature hot melt adhesive film and a melt-blown non-woven fabric to prepare a prefabricated body by adopting a low-temperature hot melt adhesive film (model HY-G7065Z, melting point 65 ℃ and use temperature 80 ℃), placing the prefabricated body on a pressing machine, setting the working temperature of the pressing machine to be 80 ℃, pressing for 5min, and starting the pressing machine to compound the prefabricated body to prepare the high-efficiency composite air filter material with high dust holding capacity.
The single-layer non-woven fabric filter material and the high-efficiency composite air filter material with high dust holding capacity in example 2 were subjected to a cigarette tolerance test to test the CCM value thereof;
the testing instrument adopts a TSI8130A to test the flow rate of 32LPM; testing medium NaCl; media generator TSI8130A; salt generator TSI8530; a dust meter KAZ air purifier; solid-state pollutant generating device: a cigarette; the test area is 270mm by 200mm; the test results are shown in Table 2.
Table 2: CCM values of Single layer nonwoven Filter Material and high dust holding high efficiency composite air Filter Material of example 2
As shown in the results of Table 2, the initial efficiency of the single-layer non-woven fabric filter material is 99.889%, the termination efficiency is 42.526%, the cigarette tolerance performance is 429mg, the CCM value is 7944.4mg/m 2, the initial efficiency of the high-dust-holding-capacity high-efficiency composite air filter material is 99.8%, the termination efficiency is 47.164%, the cigarette tolerance is 523.4mg, and the CCM value is 9692.5mg/m 2.
Example 3: (melt-blown nonwoven and spun-bonded nonwoven)
The utility model provides a high-efficient composite air filter material of high dust volume, includes two-layer non-woven fabrics filter layer and is located the dust volume material layer between two-layer non-woven fabrics filter layer, and the non-woven fabrics filter layer adopts the melt-blown non-woven fabrics, and the gram weight of individual layer is 30g/m 2, and thickness 0.15mm to 0.20mm, and the dust volume material layer adopts the spun-bonded non-woven fabrics, and the gram weight is 13g/m 2, thickness 0.05mm to 0.10mm.
The preparation method of the high-efficiency composite air filtering material with high dust holding capacity comprises the following steps: the method comprises the steps of sequentially laminating a melt-blown non-woven fabric, a low-temperature hot melt adhesive film, a spun-bonded non-woven fabric, a low-temperature hot melt adhesive film and a melt-blown non-woven fabric to prepare a prefabricated body by adopting a low-temperature hot melt adhesive film (model HY-G7065Z, melting point 65 ℃ and use temperature 80 ℃), placing the prefabricated body on a pressing machine, setting the working temperature of the pressing machine to be 80 ℃, pressing for 5min, and starting the pressing machine to compound the prefabricated body to prepare the high-efficiency composite air filter material with high dust holding capacity.
The single-layer non-woven fabric filter material and the high-efficiency composite air filter material with high dust holding capacity in example 3 were subjected to a cigarette tolerance test to test the CCM value thereof;
The testing instrument adopts a TSI8130A to test the flow rate of 32LPM; testing medium NaCl; media generator TSI8130A; salt generator TSI8530; a dust meter KAZ air purifier; solid-state pollutant generating device: a cigarette; the test area is 270mm by 200mm; the test results are shown in Table 3.
Table 3: CCM values of Single layer nonwoven Filter Material and high dust Containment high efficiency composite air Filter Material of example 3
As shown in the result 3, the initial efficiency of the single-layer non-woven fabric filter material is 99.993%, the termination efficiency is 42.537%, the cigarette tolerance performance is 942mg, the CCM value is 21431.4mg/m 2, the initial efficiency of the high-dust-holding-capacity high-efficiency composite air filter material is 99.995%, the termination efficiency is 57.248%, the cigarette tolerance is 1252mg, and the CCM value is 25344.7mg/m 2.
Example 4: (meltblown+Hot rolled nonwoven)
The high-efficiency composite air filtering material with high dust holding capacity comprises two non-woven fabric filtering layers and a dust holding material layer positioned between the two non-woven fabric filtering layers, wherein the non-woven fabric filtering layers adopt melt-blown non-woven fabrics, the gram weight of the single-layer melt-blown non-woven fabrics is 16g/m 2, and the thickness is 0.15mm to 0.20mm; the dust-containing material layer is made of hot-rolled non-woven fabric, the gram weight of the hot-rolled non-woven fabric is 20g/m 2, and the thickness is 0.05mm to 0.10mm.
The preparation method of the high-efficiency composite air filtering material with high dust holding capacity comprises the following steps: the method comprises the steps of sequentially laminating a melt-blown non-woven fabric, a low-temperature hot melt adhesive film, a spun-bonded non-woven fabric, a low-temperature hot melt adhesive film and a melt-blown non-woven fabric to prepare a prefabricated body by adopting a low-temperature hot melt adhesive film (model HY-G7065Z, melting point 65 ℃ and use temperature 80 ℃), placing the prefabricated body on a pressing machine, setting the working temperature of the pressing machine to be 80 ℃, pressing for 5min, and starting the pressing machine to compound the prefabricated body to prepare the high-efficiency composite air filter material with high dust holding capacity.
The single-layer nonwoven fabric filter material and the high-efficiency composite air filter material with high dust holding capacity in example 4 were subjected to a cigarette tolerance test to test the CCM value thereof;
The testing instrument adopts a TSI8130A to test the flow rate of 32LPM; testing medium NaCl; media generator TSI8130A; salt generator TSI8530; a dust meter KAZ air purifier; solid-state pollutant generating device: a cigarette; the test area is 270mm by 200mm; the test results are shown in Table 4.
Table 4: CCM values of Single layer nonwoven Filter Material and high dust Containment high efficiency composite air Filter Material of example 4
As shown in the results of Table 4, the initial efficiency of the single-layer non-woven fabric filter material was 99.98%, the termination efficiency was 47.278%, the cigarette tolerance performance was 779mg, the CCM value was 14381.2mg/m 2, the initial efficiency of the high-dust-holding-capacity high-efficiency composite air filter material was 99.983%, the termination efficiency was 51.844%, the cigarette tolerance was 793.4mg, and the CCM value was 14574.3mg/m 2, which indicated that the filtration efficiency, cigarette tolerance and CCM value of the high-dust-holding-capacity high-efficiency composite air filter material provided by the present invention were significantly improved as compared with the single-layer non-woven fabric filter material.
Example 5: (melt-blown cloth+Plastic gridding cloth)
The high-efficiency composite air filtering material with high dust holding capacity comprises two non-woven fabric filtering layers and a dust holding material layer positioned between the two non-woven fabric filtering layers, wherein the non-woven fabric filtering layers adopt melt-blown non-woven fabrics, the gram weight of the single-layer melt-blown non-woven fabrics is 16g/m 2, and the thickness is 0.15mm to 0.20mm; the dust-containing material layer is made of plastic mesh cloth, the gram weight of the plastic mesh cloth is 50g/m 2, and the thickness of the plastic mesh cloth is 0.05mm to 0.10mm.
The preparation method of the high-efficiency composite air filtering material with high dust holding capacity comprises the following steps: the method comprises the steps of sequentially laminating a melt-blown non-woven fabric, a low-temperature hot melt adhesive film, a spun-bonded non-woven fabric, a low-temperature hot melt adhesive film and a melt-blown non-woven fabric to prepare a prefabricated body by adopting a low-temperature hot melt adhesive film (model HY-G7065Z, melting point 65 ℃ and use temperature 80 ℃), placing the prefabricated body on a pressing machine, setting the working temperature of the pressing machine to be 80 ℃, pressing for 5min, and starting the pressing machine to compound the prefabricated body to prepare the high-efficiency composite air filter material with high dust holding capacity.
The single-layer nonwoven fabric filter material and the high-efficiency composite air filter material with high dust holding capacity in example 5 were subjected to a cigarette tolerance test to test the CCM value thereof;
The testing instrument adopts a TSI8130A to test the flow rate of 32LPM; testing medium NaCl; media generator TSI8130A; salt generator TSI8530; a dust meter KAZ air purifier; solid-state pollutant generating device: a cigarette; the test area is 270mm by 200mm; the test results are shown in Table 5.
Table 5: CCM values of Single layer nonwoven Filter Material and high dust Containment high efficiency composite air Filter Material of example 5
As shown in the results of Table 5, the initial efficiency of the single-layer non-woven fabric filter material is 99.98%, the termination efficiency is 42.571%, the cigarette tolerance performance is 784mg, the CCM value is 14501.2mg/m 2, the initial efficiency of the high-dust-holding-capacity high-efficiency composite air filter material is 99.99%, the termination efficiency is 53.471%, the cigarette tolerance is 8235 mg, and the CCM value is 14921.7mg/m 2.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent transformation of the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. The high-efficiency composite air filtering material with high dust holding capacity is characterized by comprising a dust holding material layer and non-woven fabric filtering layers which are composited on two sides of the dust holding material layer; the pores in the dust-containing material layer are larger than the pores in the non-woven filter layer.
2. The high-efficiency composite air filter material with high dust holding capacity according to claim 1, wherein the nonwoven filter layer is a melt blown nonwoven.
3. The high-efficiency composite air filter material with high dust holding capacity according to claim 3, wherein the melt-blown nonwoven fabric has a gram weight of 12-30 g/m 2.
4. A high efficiency composite air filter material having a high dust holding capacity as set forth in claim 3 wherein said nonwoven fabric has a thickness of from 0.15 mm to 0.30 mm.
5. The high-efficiency composite air filter material with high dust holding capacity according to claim 1, wherein the dust holding material layer is one or more selected from the group consisting of hot rolled non-woven fabrics, spun-bonded non-woven fabrics and plastic meshes.
6. The high-efficiency composite air filter material with high dust holding capacity according to claim 1 or 5, wherein the gram weight of the dust holding material layer is 5-50 g/m 2, and the thickness is 0.10 mm-0.30 mm.
7. The high-efficiency composite air filter material with high dust holding capacity according to claim 1, wherein the dust holding material layer comprises one or more of a water-repellent and oil-repellent material, a flame-retardant material and an antibacterial material.
8. A method of preparing a high dust holding capacity, high efficiency composite air filter material according to any one of claims 1 to 7, comprising the steps of: the non-woven fabric filter layer, the dust containing material layer and the non-woven fabric filter layer are bonded by adopting hot melt adhesive to prepare the high-efficiency composite air filter material with high dust containing capacity.
9. The method for preparing the hot melt adhesive according to claim 8, wherein the amount of the hot melt adhesive is 0.2-1.0 g/m 2.
10. The method of claim 9, wherein the hot melt adhesive is a polyolefin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410333099.0A CN118203908A (en) | 2024-03-22 | 2024-03-22 | High-efficiency composite air filtering material with high dust holding capacity and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410333099.0A CN118203908A (en) | 2024-03-22 | 2024-03-22 | High-efficiency composite air filtering material with high dust holding capacity and preparation method thereof |
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|---|---|
| CN118203908A true CN118203908A (en) | 2024-06-18 |
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|---|---|---|---|
| CN202410333099.0A Pending CN118203908A (en) | 2024-03-22 | 2024-03-22 | High-efficiency composite air filtering material with high dust holding capacity and preparation method thereof |
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| Country | Link |
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| CN (1) | CN118203908A (en) |
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