CN206882787U - For preparing the film base of porous membrane - Google Patents
For preparing the film base of porous membrane Download PDFInfo
- Publication number
- CN206882787U CN206882787U CN201720624931.8U CN201720624931U CN206882787U CN 206882787 U CN206882787 U CN 206882787U CN 201720624931 U CN201720624931 U CN 201720624931U CN 206882787 U CN206882787 U CN 206882787U
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- China
- Prior art keywords
- coating
- porous membrane
- supporter
- thickness
- film base
- Prior art date
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- 239000012528 membrane Substances 0.000 title claims abstract description 61
- 238000000576 coating method Methods 0.000 claims abstract description 81
- 239000011248 coating agent Substances 0.000 claims abstract description 80
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000009954 braiding Methods 0.000 claims description 3
- 229910000765 intermetallic Inorganic materials 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 6
- 230000035699 permeability Effects 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
Landscapes
- Filtering Materials (AREA)
Abstract
The utility model discloses a kind of film base for being used to prepare porous membrane, including coating and for supporting the cavernous supporter of the coating, the coating includes being located at the first coating and second coating of the supporter both sides respectively, and the first coating is identical with thickness with the composition of second coating；The thickness of the first coating and second coating is 0.1~0.5mm；The thickness of the supporter is 0.1~1mm.Porous membrane is obtained after the film base is sintered, because first coating is identical with thickness with the composition of second coating, therefore gained porous membrane also has symmetrical structure.Compared with the porous membrane with gradient composite structure, the porous membrane that is prepared by film base of the present utility model not only has good strainability, mechanical property, anti-wear performance and a decay resistance, and can tow sides realize filtering, applicability is stronger.
Description
Technical field
The field of porous membrane preparation is the utility model is related to, in particular to the film base for preparing porous membrane.
Background technology
Generally, film is divided into macromolecule material film, metallic material film, composite material film (containing coating)；Structure can
It is divided into monofilm, composite gradient film (containing overlay coating).Such as composite gradient film is different from two kinds of (or a variety of) performances
Material, by continuously changing the Nomenclature Composition and Structure of Complexes of both (or a variety of) materials, its interface is disappeared causes the performance of material
It is slowly varying with the change of the Nomenclature Composition and Structure of Complexes of material, form function-graded material.Therefore, membrane structure gradient design will
Make its function and performance presentation compound, but do not refer to symmetrical structure feature.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of film base with symmetrical structure characteristic, to
Prepare the porous membrane with symmetrical structure characteristic.
To achieve these goals, there is provided a kind of film base for being used to prepare porous membrane.This is used to prepare porous membrane
Film base include coating and the cavernous supporter for supporting the coating, the coating includes being located at the supporter respectively
The composition of the first coating and second coating of both sides, the first coating and second coating is identical with thickness；The first coating
Thickness with second coating is 0.1~0.5mm；The thickness of the supporter is 0.1-1mm.
Porous membrane is obtained after the film base is sintered, because first coating is identical with thickness with the composition of second coating,
Therefore gained porous membrane also has symmetrical structure.It is new by this practicality compared with the porous membrane with gradient composite structure
The porous membrane that the film base of type is prepared not only has good strainability, mechanical property, anti-wear performance and corrosion resistance
Can, and can tow sides realize filtering, applicability is stronger.On the thickness of coating, if the thickness of coating is in above range
Interior further increase, then easy cracking phenomenon, influences the strainability of porous membrane.If the thickness of coating is in above-mentioned number
Further reduce in the range of value, then easily make the thickness distribution of coating uneven, not only influence the strainability of porous membrane, and
And the mechanical property of porous membrane is influenceed, therefore, the thickness of the first coating and second coating is preferably 0.1~0.5mm.Need
It is noted that described first coating and the thickness of second coating refer to the thickness of first coating and second coating in supporter
The thickness of outer surface.Coating generally by the slurry comprising powder it is coated, drying form, because slurry has mobility, therefore,
Slurry can towards supporter inside move, coating is not only contacted with the outer surface of supporter, also with the hole inside supporter
Surface contacts, and as thickness >=0.1mm of supporter, is easy to slurry towards the internal void apparent motion of supporter to lift slurry
The contact area of material and the pore surface of supporter, so as to lift the adhesion of coating and supporter；As the thickness G T.GT.GT of supporter
During 1mm, final porous membrane can be made thicker, cause filter pressure to increase, therefore, the thickness of supporter is preferably 0.1~1mm.
Further, the supporter is the wire netting formed by metal wire knitted.In order to lift the filtering of porous membrane
Precision and reduction filter pressure, the supporter that generally use mesh is smaller but porosity is larger.But with have concurrently smaller mesh and
The porous membrane of the supporter of larger porosity would ordinarily be encountered the problem of fracture or deformation in reverse gas cleaning.The Shen of the application
Ask someone to find, for common supporter (such as nickel foam, screen cloth, copper mesh), want to have concurrently less aperture and larger
Porosity, then need the hole wall in supporter between adjacent pores sufficiently thin, this is to cause porous membrane in reverse gas cleaning mistake
The main reason for easy fracture deforms in journey.Therefore, porous membrane break resistance can be solved by selecting the supporter of suitable wall thickness
The problem of poor.Present applicant is by discovery of largely working, when and using the wire netting that is formed by metal wire knitted
For supporter when, easily obtain with smaller aperture due, larger porosity and higher ultimate strength supporter, thus, be advantageous to make
Final porous membrane has higher filtering accuracy, less filter pressure and higher ultimate strength concurrently.Simultaneously as support
Body is formed by metal wire knitted, and its ultimate strength is high, therefore can use thinner supporter, helps to reduce filter pressure.
Further, a diameter of 0.1~0.3mm of the wire, the mesh size of the supporter is 180~380 μ
M, porosity are 25~60%, and ultimate strength is 0.8~2.7KN.Thus, the matching of aperture, porosity and ultimate strength is obtained
Spend preferable supporter.
Further, a diameter of 0.18~0.25mm of the wire, the mesh size of the supporter for 212~
270 μm, porosity is 30~45%, and ultimate strength is 1.2~2.5KN.Thus, aperture, porosity and ultimate strength are obtained
The best supporter of matching degree.
Further, the thickness of the supporter is 0.2~0.6mm.Due to the supporter tool for thering is metal wire knitted to form
There is stronger ultimate strength, therefore thickness≤0.6mm supporter can be used, now, suitable for the ease of braiding thickness
Supporter, the thickness that can directly make supporter are twice of wire diameter, and two layers, i.e. supporter are woven in braiding
Thickness be preferably 0.2~0.6mm.
Further, the thickness of the supporter is 0.36~0.5mm.Thus, the porous membrane as made from the film base
Performance is better.
Further, the thickness of the first coating and second coating is 0.25~0.35mm.Thus, it is made by the film base
Porous membrane performance it is better.
Further, granularity≤38 μm of the powder of the coating are formed.The granularity of powder is bigger, easily causes in coating
More closed pore be present, so as to reduce the gas permeability of porous membrane.Thus it is preferred to make granularity≤38 μm of powder.
Further, the pattern for forming the powder of the coating is spherical or elliposoidal.Thus, spherical or elliposoidal powder
It is stacked with being lifted the porosity of porous membrane.
Further, the powder for forming the coating is metal powder, alloyed powder or intermetallic compound powder.Thus, lifted
The anti-wear performance and decay resistance of porous membrane.
It can be seen that this implementation it is new be used for prepare the composition and thickness of first coating and second coating in the film base of porous membrane
Spend identical, therefore gained porous membrane also has symmetrical structure.Compared with the porous membrane with gradient composite structure, by this
The porous membrane that the film base of utility model is prepared not only has good strainability, mechanical property, anti-wear performance and resistance to
Corrosive nature, and can tow sides realize filtering, applicability is stronger.
The utility model is described further with reference to the accompanying drawings and detailed description.What the utility model added
Aspect and advantage will be set forth in part in the description, and partly will become apparent from the description below, or pass through this practicality
New practice is recognized.
Brief description of the drawings
Form a part of accompanying drawing of the present utility model to be used for aiding in understanding of the present utility model, provided in accompanying drawing
Content and its relevant explanation in the utility model can be used for explaining the utility model, but do not form to it is of the present utility model not
Work as restriction.In the accompanying drawings：
Fig. 1 is the structural representation of the present utility model for being used to prepare the film base of porous membrane.
Embodiment
Clear, complete explanation is carried out to the utility model below in conjunction with the accompanying drawings.Those of ordinary skill in the art based on
The utility model can be realized in the case of these explanations.It is before being illustrated with reference to accompanying drawing to the utility model, it is necessary to special
It is not pointed out that：
(1) technical scheme in the utility model provided in each several part including the description below and technology are special
Sign, in the case where not conflicting, these technical schemes and technical characteristic can be mutually combined.
(2) embodiment of the present utility model being related in the description below is generally only the implementation of the utility model part
Example, rather than whole embodiments.Therefore, do not had based on the embodiment in the utility model, those of ordinary skill in the art
The every other embodiment obtained on the premise of making creative work, it should all belong to the scope of the utility model protection.
(3) on the explanation to term in the utility model.Specification and claims of the present utility model and relevant
Part in term " first ", " second " etc. be easily to cause the object confused for distinguishing, without specific for describing
Order or precedence.In addition, term " comprising " and " having " and their any deformation, it is intended that covering is non-exclusive
Include.Term " filtering accuracy " refers to that porous membrane allows the size of the largest particles passed through.Term " air transmission coefficient " refers to gas
The complexity that body flows in porous membrane.Term " ultimate strength " refers to during the tension test carried out under prescribed conditions
Required maximum, force when sample is pulled off.Term " porosity " refers to the ratio shared by unit volume porous membrane void volume.
Term " relative permeability " refers under every kPa of filter pressure the infiltration capacity of air under every square metre of filter area per hour.
The film base of the present utility model for being used to prepare porous membrane, including coating 2 and the cellular for supporting the coating 2
Supporter 1, the coating 2 include respectively be located at the both sides of supporter 1 first coating 2 and second coating 2, described first
Coating 2 is identical with thickness with the composition of second coating 2；The thickness of the first coating 2 and second coating 2 is 0.1~0.5mm,
The supporter 1 is formed by a diameter of 0.1~0.3mm metal wire knitted, and the thickness of the supporter 1 is 0.2~0.6mm, net
Hole size is 180~380 μm, and porosity is 25~60%, and ultimate strength is 0.8~2.7KN.Form the powder of the coating 2
For stainless steel alloy metal powder, the pattern of powder is spherical or elliposoidal, granularity≤38 μm of powder.
Illustrate the beneficial effects of the utility model by the following examples.
It is the selection of supporter 1 first, 1~10 illustrates by the following examples.
The something in common of the supporter 1 of embodiment 1~5 is that mesh size is 250 μm, and thickness is corresponding wire
Twice of diameter, difference are that the diameter of wire and porosity are different, and the ultimate strength of corresponding supporter 1 is not yet
Together, specific numerical value is shown in Table 1.
The performance parameter of the supporter 1 of the embodiment 1~5 of table 1..
As it can be seen from table 1 for the supporter 1 of certain mesh size, the increase of wire diameter can cause porosity
Reduce, the supporter 1 of above-described embodiment 1~5 is respectively provided with higher ultimate strength, especially when wire a diameter of 0.18~
When 0.25, supporter 1 has higher porosity and higher ultimate strength concurrently, now, is easy to obtain corresponding porous membrane
Higher relative permeability and ultimate strength.
The something in common of the supporter 1 of embodiment 6~9 is 0.23mm for the diameter of wire, and thickness is 0.46mm,
Difference is that mesh size is different with porosity, and the ultimate strength of corresponding supporter 1 is also different, and specific numerical value is shown in Table
2。
The performance parameter of the supporter 1 of the embodiment 6~9 of table 2..
Mesh is bigger, and filtering accuracy is lower, and porosity is higher, and gas permeability is better, and filter pressure is lower.Can be with from table 2
Find out, for the certain supporter 1 of wire diameter, the increase of mesh size can cause porosity to increase, illustrate small-bore and
High porosity is difficult to take into account.The supporter 1 of above-described embodiment 6~9 is respectively provided with higher ultimate strength, higher porosity
With less mesh, especially when a diameter of the 212~270 of wire, supporter 1 has higher porosity and higher concurrently
Ultimate strength, now, it is easy to make corresponding porous membrane obtain higher ultimate strength and less filter pressure.
To sum up, when the wire diameter of supporter 1 is 0.1~0.3mm, thickness is 0.2~0.6mm, mesh size is 180
~380 μm, porosity be 25~60%, supporter 1 is respectively provided with higher ultimate strength, higher porosity and less net
Hole, it is easy to make corresponding porous membrane obtain high ultimate strength, small filter pressure and high filtering accuracy.Preferably, prop up
The wire diameter of support body 1 is 0.18~0.25mm, thickness is 0.36~0.5mm, and mesh size is 212~270 μm, hole
Rate is 30~45%.
Next to that the determination of the powder of coating 2, understands by checking, when using same powder, pass through different meshes
Screen cloth screens powder, when using than that can could obtain Resisting fractre through the smaller powder of the diameter of the particle of the screen cloth of 400 mesh
The porous membrane of better performances, illustrate that the maximum particle size of particle in the powder should also be as≤38 μm.Meanwhile when using spherical powder
During material, the porosity highest of porous membrane.
10~16 illustrate the determination of the thickness of coating 2 by the following examples, and embodiment 10-16 something in common is adopts
With the composition of the supporter 1 of embodiment 3, coating 2 is identical, sintering time is identical, difference is that first coating 2 and second applies
The thickness of layer 2, wherein, the pattern for forming the powder of coating 2 is spherical.The performance ginseng of porous membrane corresponding to embodiment 10~16
Number is shown in Table 3.
The embodiment 10-16 of table 3. thickness of coating 2 and the performance parameter of corresponding porous membrane.
From table 3 it can be seen that as the thickness ＜ 0.1mm of first coating 2 and second coating 2, corresponding porous membrane breaks
It is smaller to split strength, as the thickness G T.GT.GT 0.5mm of first coating 2 and second coating 2, the relative permeability of corresponding porous membrane
It is smaller.Therefore the thickness of first coating 2 and second coating 2 should be 0.1~0.5mm.Especially when first coating 2 and second applies
When the thickness of layer 2 is 0.25~0.35, corresponding porous membrane has higher ultimate strength, less filter pressure and higher concurrently
Filtering accuracy.
Embodiment 17 is the reference examples of embodiment 13, and embodiment 17 is that supporter 1 is different from the difference of embodiment 13：It is real
Apply example 17 using the thickness of the supporter 1 with embodiment 13, aperture, porosity all same copper mesh.Empirical tests, by implementing
The ultimate strength for the porous membrane that the supporter 1 of example 17 is prepared is only 1.3~1.5KN, porous much smaller than embodiment 13
The ultimate strength of film.
Claims (10)
1. the film base for preparing porous membrane, including coating (2) and the cavernous supporter for supporting the coating (2)
(1), it is characterised in that：The coating (2) includes applying positioned at the first coating (2) of the supporter (1) both sides and second respectively
Layer (2), the first coating (2) are identical with thickness with the composition of second coating (2)；The first coating (2) and second coating
(2) thickness is 0.1~0.5mm；The thickness of the supporter (1) is 0.1~1mm.
2. the film base as claimed in claim 1 for being used to prepare porous membrane, it is characterised in that：The supporter (1) is by gold
The wire netting that category silk braiding forms.
3. the film base as claimed in claim 2 for being used to prepare porous membrane, it is characterised in that：The wire it is a diameter of
0.1~0.3mm, the mesh size of the supporter (1) is 180~380 μm, and porosity is 25~60%, ultimate strength 0.8
~2.7KN.
4. the film base as claimed in claim 3 for being used to prepare porous membrane, it is characterised in that：The wire it is a diameter of
0.18~0.25mm, the mesh size of the supporter (1) is 212~270 μm, and porosity is 30~45%, and ultimate strength is
1.2~2.5KN.
5. the film base as claimed in claim 2 for being used to prepare porous membrane, it is characterised in that：The thickness of the supporter (1)
For 0.2~0.6mm.
6. the film base as claimed in claim 5 for being used to prepare porous membrane, it is characterised in that：The thickness of the supporter (1)
For 0.36~0.5mm.
7. the film base as claimed in claim 1 for being used to prepare porous membrane, it is characterised in that：The first coating (2) and
The thickness of two coatings (2) is 0.25~0.35mm.
8. the film base as claimed in claim 1 for being used to prepare porous membrane, it is characterised in that：Form the powder of the coating (2)
Granularity≤38 μm of material.
9. the film base as claimed in claim 1 for being used to prepare porous membrane, it is characterised in that：Form the powder of the coating (2)
The pattern of material is spherical or elliposoidal.
10. the film base as claimed in claim 1 for being used to prepare porous membrane, it is characterised in that：Form the powder of the coating (2)
Expect for elemental metals powder, alloyed powder or intermetallic compound powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720624931.8U CN206882787U (en) | 2017-06-01 | 2017-06-01 | For preparing the film base of porous membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720624931.8U CN206882787U (en) | 2017-06-01 | 2017-06-01 | For preparing the film base of porous membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206882787U true CN206882787U (en) | 2018-01-16 |
Family
ID=61321098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720624931.8U Active CN206882787U (en) | 2017-06-01 | 2017-06-01 | For preparing the film base of porous membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206882787U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112569803A (en) * | 2019-09-30 | 2021-03-30 | 成都易态科技有限公司 | Preparation method of composite porous film |
| CN112569804A (en) * | 2019-09-30 | 2021-03-30 | 成都易态科技有限公司 | Composite porous film |
| CN114799173A (en) * | 2022-04-24 | 2022-07-29 | 鑫膜新材料科技(西安)有限公司 | Preparation method of powder mesh composite porous metal film |
-
2017
- 2017-06-01 CN CN201720624931.8U patent/CN206882787U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112569803A (en) * | 2019-09-30 | 2021-03-30 | 成都易态科技有限公司 | Preparation method of composite porous film |
| CN112569804A (en) * | 2019-09-30 | 2021-03-30 | 成都易态科技有限公司 | Composite porous film |
| CN114799173A (en) * | 2022-04-24 | 2022-07-29 | 鑫膜新材料科技(西安)有限公司 | Preparation method of powder mesh composite porous metal film |
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