TWI640352B - Porous filter medium and manufacturing method thereof - Google Patents
Porous filter medium and manufacturing method thereof Download PDFInfo
- Publication number
- TWI640352B TWI640352B TW105111594A TW105111594A TWI640352B TW I640352 B TWI640352 B TW I640352B TW 105111594 A TW105111594 A TW 105111594A TW 105111594 A TW105111594 A TW 105111594A TW I640352 B TWI640352 B TW I640352B
- Authority
- TW
- Taiwan
- Prior art keywords
- porous filter
- filter material
- manufacturing
- fiber membrane
- thermal
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 90
- 238000000034 method Methods 0.000 claims abstract description 67
- 239000000835 fiber Substances 0.000 claims abstract description 42
- 239000012528 membrane Substances 0.000 claims abstract description 40
- 239000007767 bonding agent Substances 0.000 claims abstract description 31
- 229920001721 polyimide Polymers 0.000 claims abstract description 30
- 238000009987 spinning Methods 0.000 claims abstract description 30
- 239000009719 polyimide resin Substances 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 238000001523 electrospinning Methods 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 9
- 238000001029 thermal curing Methods 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 239000011148 porous material Substances 0.000 claims description 29
- 239000004744 fabric Substances 0.000 claims description 13
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 7
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 6
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 5
- VEWFZHAHZPVQES-UHFFFAOYSA-N boron;n,n-diethylethanamine Chemical compound [B].CCN(CC)CC VEWFZHAHZPVQES-UHFFFAOYSA-N 0.000 claims description 4
- 238000005304 joining Methods 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 3
- 150000002466 imines Chemical class 0.000 claims description 3
- 238000010041 electrostatic spinning Methods 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims 1
- 238000007731 hot pressing Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000002245 particle Substances 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229920000784 Nomex Polymers 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004763 nomex Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- HWCKGOZZJDHMNC-UHFFFAOYSA-M tetraethylammonium bromide Chemical compound [Br-].CC[N+](CC)(CC)CC HWCKGOZZJDHMNC-UHFFFAOYSA-M 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000011077 uniformity evaluation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
- B01D71/62—Polycondensates having nitrogen-containing heterocyclic rings in the main chain
- B01D71/64—Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/08—Specific temperatures applied
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/10—Specific pressure applied
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/26—Spraying processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/02—Details relating to pores or porosity of the membranes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Nonwoven Fabrics (AREA)
- Filtering Materials (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
一種多孔濾材及其製造方法，此製造方法包括以下步驟。將聚醯亞胺樹脂及聚醯胺醯亞胺樹脂溶解於溶劑中，以形成紡絲液，其中聚醯亞胺樹脂及聚醯胺醯亞胺樹脂在紡絲液中的總和濃度為10 wt%至30 wt%，且聚醯胺醯亞胺樹脂及聚醯亞胺樹脂的重量比為5:95至10:90。然後，使用紡絲液進行靜電紡絲製程，以製成電紡纖維膜材。接著，對電紡纖維膜材進行接合劑噴塗製程，其中接合劑的濃度為1 wt%至20 wt%。之後，對經接合劑噴塗製程的電紡纖維膜材進行熱接合處理，熱接合處理包括熱預接合步驟、熱壓合步驟及熱固化步驟。A porous filter material and a manufacturing method thereof. The manufacturing method includes the following steps. The polyimide resin and the polyimide resin are dissolved in a solvent to form a spinning solution. The total concentration of the polyimide resin and the polyimide resin in the spinning solution is 10 wt. % To 30 wt%, and the weight ratio of the polyamidoimide resin and the polyamidoimide resin is 5:95 to 10:90. Then, an electrospinning process is performed using a spinning solution to prepare an electrospun fiber membrane material. Next, a bonding agent spraying process is performed on the electrospun fiber membrane material, wherein the concentration of the bonding agent is 1 wt% to 20 wt%. After that, the electrospun fiber membrane material subjected to the bonding agent spraying process is subjected to a thermal bonding process. The thermal bonding process includes a thermal pre-bonding step, a thermal compression bonding step, and a thermal curing step.
Description
本發明是有關於一種多孔濾材及其製造方法，且特別是有關於一種能夠調控孔洞尺寸並使孔洞尺寸具有均一性的多孔濾材及其製造方法。The present invention relates to a porous filter material and a method for manufacturing the same, and more particularly, to a porous filter material capable of controlling pore size and making the pore size uniform and a method for manufacturing the same.
靜電紡絲（electrospinning）製程為製造多孔隔膜的主要技術之一。相較於傳統使用拉伸方法或離心紡絲（centrifugal spinning）方法製成的膜材，使用靜電紡絲製程所製造之電紡纖維膜材的纖維直徑較細，且具有較高的比表面積。此外，電紡纖維膜材的結構是由奈米級纖維堆積而成的層狀膜，因此，相較於使用拉伸方法或離心紡絲方法製成的膜材（孔隙率分別為40%至50%以及60%至70%），電紡纖維膜材的孔隙率較高（大於或等於80%）。Electrospinning is one of the main technologies for manufacturing porous membranes. Compared with the traditional membrane material made by the stretching method or centrifugal spinning method, the electrospun fiber membrane material produced by the electrospinning process has a smaller fiber diameter and a higher specific surface area. In addition, the structure of the electrospun fiber membrane is a layered film composed of nano-grade fibers. Compared with membranes made by the stretching method or the centrifugal spinning method (the porosity is 40% to 50%, respectively) % And 60% to 70%), the porosity of the electrospun fiber membrane is higher (greater than or equal to 80%).
然而，習知使用靜電紡絲製程所製造的多孔濾材雖具有上述優點，但無法調控多孔濾材的孔洞尺寸並使孔洞尺寸具有均一性。因此，如何調控多孔濾材的孔洞尺寸，並使多孔濾材的孔洞尺寸具有均一性，為目前所需研究的重要課題。However, although the porous filter material manufactured by the conventional electrospinning process has the above-mentioned advantages, the pore size of the porous filter material cannot be adjusted and the pore size is uniform. Therefore, how to adjust the pore size of the porous filter material and make the pore size of the porous filter material uniform is an important subject for current research.
本發明提供一種多孔濾材及其製造方法，透過所述製造方法，能夠調控多孔濾材的孔洞尺寸，並使孔洞尺寸具有均一性。The invention provides a porous filter material and a manufacturing method thereof. Through the manufacturing method, the pore size of the porous filter material can be adjusted and the pore size can be uniform.
本發明之多孔濾材的製造方法包括以下步驟。將聚醯亞胺樹脂及聚醯胺醯亞胺樹脂溶解於溶劑中，以形成紡絲液，其中聚醯亞胺樹脂及聚醯胺醯亞胺樹脂在紡絲液中的總和濃度為10 wt%至30 wt%，且聚醯胺醯亞胺樹脂及聚醯亞胺樹脂的重量比為5:95至10:90。然後，使用紡絲液進行靜電紡絲製程，以製成電紡纖維膜材。接著，對電紡纖維膜材進行接合劑噴塗製程，其中接合劑的濃度為1 wt%至20 wt%。之後，對經接合劑噴塗製程的電紡纖維膜材進行熱接合處理，熱接合處理包括熱預接合步驟、熱壓合步驟及熱固化步驟。The method for producing a porous filter material of the present invention includes the following steps. The polyimide resin and the polyimide resin are dissolved in a solvent to form a spinning solution. The total concentration of the polyimide resin and the polyimide resin in the spinning solution is 10 wt. % To 30 wt%, and the weight ratio of the polyamidoimide resin and the polyamidoimide resin is 5:95 to 10:90. Then, an electrospinning process is performed using a spinning solution to prepare an electrospun fiber membrane material. Next, a bonding agent spraying process is performed on the electrospun fiber membrane material, wherein the concentration of the bonding agent is 1 wt% to 20 wt%. After that, the electrospun fiber membrane material subjected to the bonding agent spraying process is subjected to a thermal bonding process. The thermal bonding process includes a thermal pre-bonding step, a thermal compression bonding step, and a thermal curing step.
在本發明的一實施例中，溶劑包括N,N-二甲基乙醯胺、N-甲基吡咯烷酮或其組合。In one embodiment of the present invention, the solvent includes N, N-dimethylacetamide, N-methylpyrrolidone, or a combination thereof.
在本發明的一實施例中，紡絲液更包括四級銨鹽，且所述四級銨鹽包括三乙胺硼烷。In an embodiment of the present invention, the spinning solution further includes a quaternary ammonium salt, and the quaternary ammonium salt includes triethylamineborane.
在本發明的一實施例中，在靜電紡絲製程中，單孔紡絲液流速為0.005 ml/min至0.05 ml/min，與電極距離為10 cm至30 cm。In an embodiment of the present invention, in the electrospinning process, the flow rate of the single-hole spinning solution is 0.005 ml / min to 0.05 ml / min, and the distance from the electrode is 10 cm to 30 cm.
在本發明的一實施例中，熱預接合步驟是以100℃至160℃的熱風循環使電紡纖維膜材進行熱預接合，熱壓合步驟是以1 kg/cm至10 kg/cm的線壓力進行壓合，熱固化步驟是在180℃至200℃的溫度下進行。In one embodiment of the present invention, the thermal pre-joining step is performed by a hot air cycle of 100 ° C. to 160 ° C. to perform the thermal pre-joinment of the electrospun fiber membrane material, and the thermal compression-bonding step is performed at a temperature of 1 kg / cm to 10 kg / cm. Compression bonding is performed under linear pressure, and the thermal curing step is performed at a temperature of 180 ° C to 200 ° C.
在本發明的一實施例中，電紡纖維膜材的基重為0.5 g/m2 至30 g/m2 。In one embodiment of the present invention, the basis weight of the electrospun fiber membrane material is 0.5 g / m 2 to 30 g / m 2 .
在本發明的一實施例中，接合劑包括N,N-二甲基乙醯胺、聚醯胺醯亞胺或其組合。In one embodiment of the present invention, the bonding agent includes N, N-dimethylacetamide, polyamidamine, imine, or a combination thereof.
在本發明的一實施例中，更包括使電紡纖維膜材與基布複合。In an embodiment of the present invention, the method further includes compounding the electrospun fiber membrane material with the base cloth.
在本發明的一實施例中，基布的基重為200 g/m2 至600 g/m2 ，所述電紡纖維膜材的基重為0.5 g/m2 至5 g/m2 。In one embodiment of the present invention, the basis weight of the base fabric is 200 g / m 2 to 600 g / m 2 , and the basis weight of the electrospun fiber membrane material is 0.5 g / m 2 to 5 g / m 2 .
本發明的多孔濾材的纖維細度為100 nm至1 μm，孔洞尺寸為50 nm至2 μm，孔洞尺寸的標準偏差為0.01 μm至0.08μm，變異係數為4%至8%。The porous filter material of the invention has a fiber fineness of 100 nm to 1 μm, a pore size of 50 nm to 2 μm, a standard deviation of the pore size of 0.01 μm to 0.08 μm, and a coefficient of variation of 4% to 8%.
基於上述，在本發明所提出之多孔濾材的製造方法中，用來製造電紡纖維膜材的紡絲液包含聚醯亞胺樹脂及聚醯胺醯亞胺樹脂，並對所製成的電紡纖維膜材進行接合劑噴塗製程及熱接合處理，其中可藉由調整接合劑的濃度以調控多孔濾材的孔洞尺寸，且所製造出的多孔濾材具有孔洞尺寸均一性的優點。Based on the above, in the method for manufacturing a porous filter material proposed in the present invention, the spinning solution used for manufacturing the electrospun fiber membrane material includes polyimide resin and polyimide resin, The spun fiber membrane is subjected to a bonding agent spraying process and a thermal bonding process. Among them, the pore size of the porous filter material can be adjusted by adjusting the concentration of the bonding agent, and the manufactured porous filter material has the advantage of uniform pore size.
為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.
圖1為依照本發明第一實施例之多孔濾材的製造方法之流程示意圖。以下，將以圖1詳細描述依照本發明第一實施例之多孔濾材的製造方法。FIG. 1 is a schematic flowchart of a method for manufacturing a porous filter material according to a first embodiment of the present invention. Hereinafter, a method for manufacturing a porous filter medium according to a first embodiment of the present invention will be described in detail with reference to FIG. 1.
請參照圖1。首先，進行步驟S110，將聚醯亞胺（polyimide，PI）樹脂及聚醯胺醯亞胺（polyamide-imide，PAI）樹脂溶解於溶劑中，以形成紡絲液。Please refer to Figure 1. First, step S110 is performed to dissolve a polyimide (PI) resin and a polyimide-imide (PAI) resin in a solvent to form a spinning solution.
在本實施例中，聚醯亞胺樹脂及聚醯胺醯亞胺樹脂在紡絲液中的總和濃度例如是10 wt%至30 wt%，較佳例如是15 wt%至20 wt%。聚醯胺醯亞胺樹脂及聚醯亞胺樹脂的重量比例如是5:95至10:90，較佳例如是5:95。更詳細而言，溶劑可包括N,N-二甲基乙醯胺（N,N-dimethylacetamide，DMAc）、N-甲基吡咯烷酮（N-methyl-2-pyrrolidone，NMP）或其組合。此外，紡絲液可更包括四級銨鹽，四級銨鹽例如是三乙胺硼烷（tetraethylammonium bromide；TEAB），以使紡絲液的導電率增加。In this embodiment, the total concentration of the polyimide resin and the polyimide resin in the spinning solution is, for example, 10 wt% to 30 wt%, and preferably, for example, 15 wt% to 20 wt%. The weight ratio of the polyimide resin and the polyimide resin is, for example, 5:95 to 10:90, and preferably, for example, 5:95. In more detail, the solvent may include N, N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidone (NMP), or a combination thereof. In addition, the spinning solution may further include a quaternary ammonium salt, such as tetraethylammonium bromide (TEAB), to increase the conductivity of the spinning solution.
接著，請繼續參照圖1，進行步驟S120，使用紡絲液進行靜電紡絲製程，以製成電紡纖維膜材。Next, please continue to refer to FIG. 1 and perform step S120 to perform an electrospinning process using a spinning solution to prepare an electrospun fiber membrane material.
在本實施例中，靜電紡絲製程可以是針式電極系統或線式電極系統，但本發明不以此為限。更詳細而言，在靜電紡絲製程中，單孔紡絲液流速例如是0.005 ml/min至0.05 ml/min，較佳例如是0.01 ml/min至0.02 ml/min，與電極距離例如是10 cm至30 cm，操作電壓大於25 kV。電紡纖維膜材的基重例如是0.5 g/m2 至30 g/m2 ，較佳例如是1 g/m2 至10 g/m2 ，以達到較好的濾效及支撐效果。In this embodiment, the electrostatic spinning process may be a needle electrode system or a wire electrode system, but the invention is not limited thereto. In more detail, in the electrospinning process, the flow rate of the single-hole spinning solution is, for example, 0.005 ml / min to 0.05 ml / min, preferably, for example, 0.01 ml / min to 0.02 ml / min, and the distance from the electrode is, for example, 10 cm to 30 cm and operating voltage greater than 25 kV. The basis weight of the electrospun fiber membrane material is, for example, 0.5 g / m 2 to 30 g / m 2 , and preferably, for example, 1 g / m 2 to 10 g / m 2 , in order to achieve better filtering efficiency and supporting effect.
之後，請繼續參照圖1，進行步驟S130，對電紡纖維膜材進行接合劑噴塗製程。After that, please continue to refer to FIG. 1 and perform step S130 to perform a bonding agent spraying process on the electrospun fiber membrane material.
在本實施例中，接合劑噴塗製程可以是霧化器噴塗製程或靜電噴塗技術製程，但本發明不以此為限。更詳細而言，接合劑可包括N,N-二甲基乙醯胺、聚醯胺醯亞胺或其組合。接合劑的濃度例如是1 wt%至20 wt%，且可藉由調整接合劑的濃度以調控所製成之多孔濾材的孔洞尺寸。In this embodiment, the bonding agent spraying process may be an atomizer spraying process or an electrostatic spraying technology process, but the present invention is not limited thereto. In more detail, the bonding agent may include N, N-dimethylacetamide, polyamidamine, imine, or a combination thereof. The concentration of the bonding agent is, for example, 1 wt% to 20 wt%, and the pore size of the porous filter material can be adjusted by adjusting the concentration of the bonding agent.
接著，請繼續參照圖1，進行步驟S140，對電紡纖維膜材進行熱接合處理，其中熱接合處理包括熱預接合步驟、熱壓合步驟及熱固化步驟。Next, please continue to refer to FIG. 1 and perform step S140 to perform a thermal bonding process on the electrospun fiber membrane material, wherein the thermal bonding process includes a thermal pre-bonding step, a thermal compression bonding step, and a thermal curing step.
在本實施例中，熱預接合步驟例如是以100℃至160℃（較佳為150℃）的熱風循環使電紡纖維膜材進行熱預接合，熱壓合步驟例如是以1 kg/cm至10 kg/cm的線壓力進行壓合，熱固化步驟例如是在180℃至200℃的溫度下進行。In this embodiment, the thermal pre-joining step is performed by, for example, a hot air cycle of 100 ° C to 160 ° C (preferably 150 ° C) to thermally pre-join the electrospun fiber membrane material, and the thermal compression-bonding step is, for example, 1 kg / cm Compression bonding is performed at a linear pressure of 10 kg / cm, and the thermal curing step is performed at a temperature of, for example, 180 ° C to 200 ° C.
在本發明的第二實施例中，多孔濾材的製造方法可更包括使電紡纖維膜材與基布複合。亦即，可在基布上進行圖1的步驟S120、步驟S130及步驟S140，以形成多孔濾材。更詳細而言，所形成之多孔濾材的厚度例如是5 μm至50 μm，且多孔濾材例如是耐溫針刺濾袋，其可承受的溫度例如是180℃至220℃。基布的基重例如是200 g/m2 至600 g/m2 ，較佳例如是450 g/m2 至500 g/m2 ，且可使用市售品，例如諾美克斯（Nomex）濾布（460 gsm），但本發明並不以此為限。In the second embodiment of the present invention, the manufacturing method of the porous filter material may further include compounding the electrospun fiber membrane material with the base cloth. That is, steps S120, S130, and S140 of FIG. 1 may be performed on the base fabric to form a porous filter material. In more detail, the thickness of the formed porous filter material is, for example, 5 μm to 50 μm, and the porous filter material is, for example, a temperature-resistant needle filter bag, and the temperature it can withstand is, for example, 180 ° C. to 220 ° C. The basis weight of the base cloth is, for example, 200 g / m 2 to 600 g / m 2 , preferably, for example, 450 g / m 2 to 500 g / m 2 , and a commercially available product such as Nomex can be used. Filter cloth (460 gsm), but the invention is not limited to this.
基本上，本實施例之多孔濾材的製造方法與上述第一實施例之多孔濾材的製造方法相似，故在此不予贅述。本實施例與上述第一實施例不同之處在於，在熱壓合步驟方面，上述第一實施例僅對電紡纖維膜材進行壓合，而本實施例是將電紡纖維膜材直接壓合於基布上。此外，在與基布複合的情況下，由於基布能夠提供一定程度的濾效及支撐作用，因此，本實施例之電紡纖維膜材的基重可小於上述第一實施例之電紡纖維膜材的基重，例如是0.5 g/m2 至5 g/m2 。Basically, the manufacturing method of the porous filter material in this embodiment is similar to the manufacturing method of the porous filter material in the first embodiment, so it will not be repeated here. This embodiment is different from the above-mentioned first embodiment in that, in terms of the thermocompression step, the above-mentioned first embodiment only compresses the electrospun fiber membrane, while this embodiment is a method of directly pressing the Closing on the base cloth. In addition, in the case of composite with the base fabric, since the base fabric can provide a certain degree of filtering effect and supporting effect, the basis weight of the electrospun fiber membrane material of this embodiment may be smaller than the electrospun fiber of the first embodiment The basis weight of the film material is, for example, 0.5 g / m 2 to 5 g / m 2 .
由本發明所提出之多孔濾材的製造方法所形成的多孔濾材，對0.26 μm至0.3 μm之微粒的過濾效果例如是90%至99.99%，纖維細度例如是100 nm至1 μm，孔洞尺寸例如是50 nm至2 μm，孔洞尺寸的標準偏差例如是0.01 μm至0.08μm，變異係數例如是4%至8%。因此，本發明所提出之多孔濾材的製造方法能夠使多孔濾材的孔洞尺寸具有均一性。The porous filter material formed by the method for manufacturing a porous filter material according to the present invention has a filtering effect on particles of 0.26 μm to 0.3 μm, for example, 90% to 99.99%, a fiber fineness, for example, 100 nm to 1 μm, and a pore size, for example, 50 nm to 2 μm, the standard deviation of the pore size is, for example, 0.01 μm to 0.08 μm, and the coefficient of variation is, for example, 4% to 8%. Therefore, the method for manufacturing a porous filter material proposed by the present invention can make the pore size of the porous filter material uniform.
以下，藉由實驗例來詳細說明上述實施例所提出之多孔濾材的製造方法及所製成的多孔濾材。然而，下述實驗例並非用以限制本發明。實驗例 Hereinafter, the method for manufacturing the porous filter medium proposed in the above embodiment and the manufactured porous filter medium will be described in detail through experimental examples. However, the following experimental examples are not intended to limit the present invention. Experimental example
為了證明本發明所提出之多孔濾材的製造方法，能夠調控多孔濾材的孔洞尺寸，並使孔洞尺寸具有均一性，以下特別作此實驗例。In order to prove the manufacturing method of the porous filter material proposed by the present invention, the pore size of the porous filter material can be adjusted and the pore size can be made uniform. This experimental example will be made below.
必須說明的是，由於多孔濾材的製造方法已於上文中詳細地描述，因此，下文中有關多孔濾材的製備，為求方便說明故省略製備細節之敘述。多孔濾材的製備 實例 1 It must be noted that since the manufacturing method of the porous filter material has been described in detail above, the preparation of the porous filter material is hereinafter described, and for the sake of convenience, the description of the preparation details is omitted. Preparation example 1 of porous filter
將聚醯亞胺樹脂及聚醯胺醯亞胺樹脂溶解於溶劑中，以形成紡絲液，其中聚醯亞胺樹脂及聚醯胺醯亞胺樹脂在紡絲液中的總和濃度為20 wt%，且聚醯胺醯亞胺樹脂及聚醯亞胺樹脂的重量比為5:95，並在紡絲液中添加1 wt%的三乙胺硼烷。使用紡絲液進行靜電紡絲製程，以製成電紡纖維膜材。之後，對電紡纖維膜材進行接合劑噴塗製程，其中接合劑的濃度為1 wt%。接著，對電紡纖維膜材進行熱接合處理。實例 2 The polyimide resin and the polyimide resin are dissolved in a solvent to form a spinning solution. The total concentration of the polyimide resin and the polyimide resin in the spinning solution is 20 wt. %, And the weight ratio of the polyamidoimide resin and the polyamidoimide resin is 5:95, and 1 wt% of triethylamineborane is added to the spinning solution. An electrospinning process is performed using a spinning solution to make an electrospun fiber membrane material. After that, a bonding agent spraying process is performed on the electrospun fiber membrane material, wherein the concentration of the bonding agent is 1 wt%. Next, the electrospun fiber membrane material is subjected to a thermal bonding process. Example 2
除了接合劑的濃度為5 wt%以外，以與實例1相同的方式製造多孔濾材。實例 3 A porous filter medium was manufactured in the same manner as in Example 1 except that the concentration of the bonding agent was 5 wt%. Example 3
除了接合劑的濃度為10 wt%以外，以與實例1相同的方式製造多孔濾材。實例 4 A porous filter medium was manufactured in the same manner as in Example 1 except that the concentration of the bonding agent was 10 wt%. Example 4
除了接合劑的濃度為20 wt%以外，以與實例1相同的方式製造多孔濾材。實例 5 A porous filter medium was manufactured in the same manner as in Example 1 except that the concentration of the bonding agent was 20 wt%. Example 5
將聚醯亞胺樹脂及聚醯胺醯亞胺樹脂溶解於溶劑中，以形成紡絲液，其中聚醯亞胺樹脂及聚醯胺醯亞胺樹脂在紡絲液中的總和濃度為20 wt%，且聚醯胺醯亞胺樹脂及聚醯亞胺樹脂的重量比為5:95，並在紡絲液中添加1 wt%的三乙胺硼烷。接著，在基布（諾美克斯濾布（460 gsm））上使用紡絲液進行靜電紡絲製程，以製成電紡纖維膜材。之後，進行接合劑噴塗製程，其中接合劑的濃度為10 wt%，再進行熱接合處理，其中以10 kg/cm的線壓力進行壓合。評估 1 ：孔洞尺寸均一性評估 The polyimide resin and the polyimide resin are dissolved in a solvent to form a spinning solution. The total concentration of the polyimide resin and the polyimide resin in the spinning solution is 20 wt. %, And the weight ratio of the polyamidoimide resin and the polyamidoimide resin is 5:95, and 1 wt% of triethylamineborane is added to the spinning solution. Next, an electrospinning process was performed on a base cloth (Nomex filter cloth (460 gsm)) using a spinning solution to prepare an electrospun fiber membrane material. Then, a bonding agent spraying process is performed, in which the concentration of the bonding agent is 10 wt%, and then a thermal bonding process is performed, in which the bonding is performed at a linear pressure of 10 kg / cm. Evaluation 1 : Hole size uniformity evaluation
對實例1至實例5所製成的多孔濾材，以下述方法進行孔洞尺寸均一性的評估。利用美國PMI公司（Porous Materials, Inc., PMI）製造的毛細流孔徑測定儀（Capillary Flow Porometer）（型號Model no. CFP-1200-AE），依據ASTM F316檢測標準，量測多孔濾材的孔洞尺寸，並計算其標準偏差及變異係數，量測結果顯示在下方表1中。評估 2 ：過濾效果評估 For the porous filter materials prepared in Examples 1 to 5, the uniformity of the pore size was evaluated by the following method. Capillary Flow Porometer (Model no. CFP-1200-AE) manufactured by Porous Materials, Inc. (PMI) in the United States was used to measure the pore size of the porous filter material according to the ASTM F316 test standard And calculate its standard deviation and coefficient of variation. The measurement results are shown in Table 1 below. Evaluation 2 : Evaluation of filtering effect
對實例5所製成的多孔濾材，以下述方法進行過濾效果的評估。利用TSI公司製造的CertiTest®自動化濾材測試儀（Automated Filter Testers）（型號Tester model 8130），依據CNS14755及MIL36954C檢測標準，量測多孔濾材對0.26 μm至0.3 μm之微粒的過濾效果，其中測試流量為32 L/min，量測結果顯示在下方表1中。表 1
由上方表1可知，實例1至實例4的多孔濾材是依據本發明所提出之多孔濾材的製造方法製成，孔洞尺寸的標準偏差為0.01μm至0.08μm，變異係數為4%至8%，因此，具有孔洞尺寸均一性的優點。此外，在製造實例1至實例4之多孔濾材的過程中，分別加入不同濃度的接合劑，以及不同壓合條件，進而使所製成的多孔濾材具有不同孔洞尺寸。更詳細而言，當所添加的接合劑濃度增加時，所製成之多孔濾材的孔洞尺寸變小。因此，可藉由調整接合劑的濃度達成調控多孔濾材的孔洞尺寸之目的。It can be known from Table 1 above that the porous filter materials of Examples 1 to 4 are made according to the manufacturing method of the porous filter material proposed by the present invention. The standard deviation of the pore size is 0.01 μm to 0.08 μm, and the coefficient of variation is 4% to 8%. Therefore, there is an advantage that the hole size is uniform. In addition, during the process of manufacturing the porous filter materials of Examples 1 to 4, different concentrations of bonding agents and different pressing conditions were added, so that the porous filter materials produced had different pore sizes. More specifically, when the concentration of the added bonding agent is increased, the pore size of the porous filter material to be manufactured becomes smaller. Therefore, the purpose of regulating the pore size of the porous filter material can be achieved by adjusting the concentration of the bonding agent.
另一方面，實例5的多孔濾材對0.26 μm至0.3 μm之微粒的過濾效果為92%至96%，因此，可得知依據本發明所提出之多孔濾材具有良好的過濾效果。此外，實例5之多孔濾材的壓差為15.3 mmH2 O，壓差越低，則具有越長的使用壽命。相較於壓差通常為約30 mmH2 O的多孔性聚四氟乙烯（PTFE）膜高溫濾袋市售品，本發明所提出之多孔濾材的使用壽命較長。On the other hand, the porous filter material of Example 5 has a filtering effect of particles ranging from 0.26 μm to 0.3 μm in the range of 92% to 96%. Therefore, it can be known that the porous filter material according to the present invention has a good filtering effect. In addition, the pressure difference of the porous filter material of Example 5 was 15.3 mmH 2 O. The lower the pressure difference, the longer the service life. Compared with a commercially available porous polytetrafluoroethylene (PTFE) membrane high-temperature filter bag with a differential pressure of usually about 30 mmH 2 O, the porous filter medium proposed by the present invention has a longer service life.
綜上所述，在本發明多孔濾材的製造方法中，用來製造電紡纖維膜材的紡絲液包含聚醯亞胺樹脂及聚醯胺醯亞胺樹脂，並對所製成的電紡纖維膜材進行接合劑噴塗製程及熱接合處理，其中可藉由調整接合劑的濃度以調控多孔濾材的孔洞尺寸，當添加的接合劑濃度增加時，所製成之多孔濾材的孔洞尺寸變小。此外，所製造出的多孔濾材具有孔洞尺寸均一性的優點，並對0.26 μm至0.3 μm之微粒具有良好的過濾效果。同時，所製造出的多孔濾材更具有較長的使用壽命。In summary, in the method for manufacturing a porous filter material of the present invention, the spinning solution used to manufacture the electrospun fiber membrane material includes a polyimide resin and a polyimide resin, and the prepared electrospun The fiber membrane material is subjected to a bonding agent spraying process and a thermal bonding process. The pore size of the porous filter material can be adjusted by adjusting the concentration of the bonding agent. When the concentration of the added bonding agent is increased, the pore size of the prepared porous filter material becomes smaller. . In addition, the manufactured porous filter material has the advantage of uniform pore size, and has a good filtering effect on particles of 0.26 μm to 0.3 μm. At the same time, the manufactured porous filter material has a longer service life.
雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.
S110、S120、S130、S140‧‧‧步驟S110, S120, S130, S140 ‧‧‧ steps
圖1為依照本發明第一實施例之多孔濾材的製造方法之流程示意圖。FIG. 1 is a schematic flowchart of a method for manufacturing a porous filter material according to a first embodiment of the present invention.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105111594A TWI640352B (en) | 2016-04-14 | 2016-04-14 | Porous filter medium and manufacturing method thereof |
| CN201610857534.5A CN107297149B (en) | 2016-04-14 | 2016-09-28 | Porous filter material and method of making the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105111594A TWI640352B (en) | 2016-04-14 | 2016-04-14 | Porous filter medium and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201735983A TW201735983A (en) | 2017-10-16 |
| TWI640352B true TWI640352B (en) | 2018-11-11 |
Family
ID=60136781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW105111594A TWI640352B (en) | 2016-04-14 | 2016-04-14 | Porous filter medium and manufacturing method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107297149B (en) |
| TW (1) | TWI640352B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110694352B (en) * | 2019-11-01 | 2022-08-12 | 石家庄辰泰滤纸有限公司 | Nanofiber, preparation method thereof, composite filter material prepared from nanofiber and application of composite filter material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201440883A (en) * | 2013-04-25 | 2014-11-01 | Ind Tech Res Inst | Filtration material and method for fabricating the same |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4225686A (en) * | 1979-07-19 | 1980-09-30 | The Upjohn Company | Blends of copolyimides with copolyamideimides |
| US7393383B2 (en) * | 2005-01-14 | 2008-07-01 | L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude | Separation membrane made from blends of polyimide with polyamide or polyimide-amide polymers |
| KR101687426B1 (en) * | 2008-12-25 | 2016-12-19 | 주식회사 쿠라레 | Filtration material for filters, and filter cartridge |
| CN101947415B (en) * | 2010-08-13 | 2012-06-20 | 东华大学 | Combination of electrostatic spinning and electrostatic spraying for preparing nanofibre base composite separation membrane |
| US9718031B2 (en) * | 2013-07-05 | 2017-08-01 | Chevron U.S.A. Inc. | Composite hollow fiber membranes useful for CO2 removal from natural gas |
| CN103552357B (en) * | 2013-10-25 | 2016-06-29 | 中航复合材料有限责任公司 | A kind of preparation method of composite enhanced fabrics |
| US10137394B2 (en) * | 2013-12-09 | 2018-11-27 | Nano and Advanced Materials Institute Ltd. | Interlaced filtration barrier |
| CN103904271B (en) * | 2014-04-23 | 2017-01-18 | 深圳市星源材质科技股份有限公司 | Preparation method of high-performance composite diaphragm and composite diaphragm |
| CN104353369B (en) * | 2014-10-22 | 2016-11-23 | 东华大学 | A kind of method that hot pressing incipient fusion method prepares nanofiber-based composite filter membrane |
-
2016
- 2016-04-14 TW TW105111594A patent/TWI640352B/en active
- 2016-09-28 CN CN201610857534.5A patent/CN107297149B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201440883A (en) * | 2013-04-25 | 2014-11-01 | Ind Tech Res Inst | Filtration material and method for fabricating the same |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201735983A (en) | 2017-10-16 |
| CN107297149B (en) | 2021-03-23 |
| CN107297149A (en) | 2017-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7846238B2 (en) | Method of manufacturing porous polytetrafluoroethylene membrane, filter medium, and filter unit | |
| Guibo et al. | The electrospun polyamide 6 nanofiber membranes used as high efficiency filter materials: Filtration potential, thermal treatment, and their continuous production | |
| CN102658038B (en) | Preparation method of sub-high efficiency polytetrafluoroethylene (PTFE) micro-porous film and film lamination material | |
| JP2015208881A5 (en) | ||
| TWI643665B (en) | Microporous film and method for producing the same | |
| TWI706977B (en) | Method for preparing porous membrane of fluorine-based resin and porous membrane of fluorine-based resin | |
| CN105749767A (en) | Electrostatic-spinning nano fiber air filter material and preparation method thereof | |
| CN103044917B (en) | A kind of aromatic polysulfonamide Quito pore membrane and its preparation method and application | |
| CN102828392B (en) | Hydrophilic antibacterial composite nano fibrous membrane and preparation method thereof | |
| Li et al. | Three-layer composite filter media containing electrospun polyimide nanofibers for the removal of fine particles | |
| GB2461619A (en) | Method of making a porous membrane using first and second PTFE resins | |
| JP2014124578A (en) | Filtration material for filter and production method of the same | |
| JP5873389B2 (en) | Method for producing modified polytetrafluoroethylene microporous membrane | |
| JP2015009221A (en) | Method for producing porous polytetrafluoroethylene membrane | |
| TWI640352B (en) | Porous filter medium and manufacturing method thereof | |
| JP2016538122A (en) | Microporous polyamide-imide membrane | |
| CN105709502A (en) | Anti-static sandwich type purification material | |
| JP2014069115A (en) | Filtration material for filter and method of producing the same | |
| CN106621853A (en) | Perfluoropolymer composite membrane as well as preparation method and application thereof | |
| KR101491994B1 (en) | Porous support, method for manufacturing the same and membrane for gas or liquid filter comprising the same | |
| JP6340156B2 (en) | Nanofiber structure | |
| US9669608B2 (en) | Porous polytetrafluoroethylene composite and method for producing the same | |
| KR20090114764A (en) | Vent Filter Media for Automobile Headlamps and Manufacturing Method Thereof | |
| Du et al. | Preparation of electrospun PVDF nanofiber composite filter medium and its application in air filtration | |
| TWI568491B (en) | Filtration material |