CN108079803A - A kind of microporous teflon membran - Google Patents
A kind of microporous teflon membran Download PDFInfo
- Publication number
- CN108079803A CN108079803A CN201711163821.7A CN201711163821A CN108079803A CN 108079803 A CN108079803 A CN 108079803A CN 201711163821 A CN201711163821 A CN 201711163821A CN 108079803 A CN108079803 A CN 108079803A
- Authority
- CN
- China
- Prior art keywords
- nano
- microporous teflon
- teflon membran
- silicon dioxide
- dioxide particle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004809 Teflon Substances 0.000 title claims abstract description 39
- 229920006362 Teflon® Polymers 0.000 title claims abstract description 39
- 210000004379 membrane Anatomy 0.000 title claims description 52
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000002245 particle Substances 0.000 claims abstract description 38
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 36
- 239000012528 membrane Substances 0.000 claims abstract description 17
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 29
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 29
- -1 polytetrafluoroethylene ethylene Polymers 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910003978 SiClx Inorganic materials 0.000 claims description 2
- VDGJOQCBCPGFFD-UHFFFAOYSA-N oxygen(2-) silicon(4+) titanium(4+) Chemical compound [Si+4].[O-2].[O-2].[Ti+4] VDGJOQCBCPGFFD-UHFFFAOYSA-N 0.000 claims 1
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000011856 silicon-based particle Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/36—Polytetrafluoroethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/147—Microfiltration
-
- 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
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
-
- 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
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
Abstract
The present invention provides a kind of microporous teflon membrans.Belong to plastic products technology field.The present invention includes membrane body, has in the membrane body and uses hollow layer, has hollow nano-silicon dioxide particle in the hollow layer.The present invention forms hollow layer among film, and hollow layer structure is protected not to be crushed, and makes the weight saving of film, anti-impact force enhancing.
Description
Technical field
The invention belongs to plastic products technology fields, are related to a kind of microporous teflon membran.
Background technology
The chemical stability of polytetrafluoroethylene (PTFE) height, which imparts its product, has the characteristics such as the strong acid of resistance to highly basic, high temperature resistant, separately
Also there is excellent hydrophobicity outside.The film made of polytetrafluoroethylene (PTFE) has preferable waterproof and etch-proof effect, but works as
When film thickness relatively wraps, the anti-impact force of the film has to be strengthened.
Chinese patent discloses a kind of waterproof polytetrafluoroethylene film [application number：201610185348.1], preparation method
Comprise the following steps successively：(1) batch mixing：Teflon resin powder, fluid lubricant, hydrophobic material are stirred；(2)
Green compact and calendering：By the polytetrafluoroethylene (PTFE) material by green compact, polytetrafluoroethylene (PTFE) base band is made in calendering；(3) longitudinal stretching and
Steam treatment：By the PTFE base longitudinal stretching, water vapour decatize obtains degreasing base band；(4) cross directional stretch and heat
Sizing：By degreasing base band cross directional stretch on tenter, thermal finalization is sintered, obtains heat-setting thin-film.What the invention obtained
Polytetrafluoroethylene film has good water-proof effect, feature in uniform thickness.But the invention is solid film, anti-impact force
Have to be strengthened.
The content of the invention
The purpose of the present invention is regarding to the issue above and defect, provide a kind of microporous teflon membran.
A kind of microporous teflon membran has including membrane body, in the membrane body and uses hollow layer, and described is hollow
There is hollow nano-silicon dioxide particle in layer.
In a kind of above-mentioned microporous teflon membran, the nano-silicon dioxide particle is spherical hollow structure.
In a kind of above-mentioned microporous teflon membran, the membrane body further includes poly- four positioned at hollow layer both sides
Vinyl fluoride layer.
In a kind of above-mentioned microporous teflon membran, the hollow layer is by least one layer of nanometer titanium dioxide to tile
Silicon particle forms.
In a kind of above-mentioned microporous teflon membran, if the hollow layer is by dried layer nano-silicon dioxide particle group
Into.
In a kind of above-mentioned microporous teflon membran, if the nanometer two in the dried layer nano-silicon dioxide particle
Silicon oxide particle is interlaced.
In a kind of above-mentioned microporous teflon membran, this microporous teflon membran includes the nanometer of 0.1-30wt%
The PTFE of silicon dioxide granule and 70-99.9wt%.
In a kind of above-mentioned microporous teflon membran, the microporous teflon membran includes receiving for 1-20wt%
The PTFE of rice silicon dioxide granule and 80-99wt%.
In a kind of above-mentioned microporous teflon membran, this microporous teflon membran includes the nano-silica of 16wt%
The PTFE of SiClx particle and 84wt%.
In a kind of above-mentioned microporous teflon membran, prepared with following steps：
1) PTFE and nano-silicon dioxide particle are subjected to batch mixing in high-speed mixer, mixture is put into mold and is pressed into
Green compact,
2) green compact are sintered the film that 0.03-1.500mm thickness is lathed after 8-24h at 380 DEG C.
Compared with prior art, the invention has the advantages that：
1st, microporous teflon membran of the invention forms hollow layer among film, hollow layer structure is protected not pressed
It is broken, and make the weight saving of film, anti-impact force enhancing.
2nd, the multi-layer nano silicon dioxide granule structure of hollow layer forms multilayer buffering section, make the intensity of hollow layer into
One step is strengthened.
3rd, production method is simple and convenient, is manufactured convenient for scale.
Part is illustrated to embody by further advantage, target and the feature of the present invention by following, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the structure diagram of invention.
Fig. 2 is another structure diagram of the present invention.
Fig. 3 is the A-A sectional views of Fig. 2.
Fig. 4 is the structure diagram of hollow layer.
Fig. 5 is another structure diagram of hollow layer.
In figure, membrane body 1, hollow layer 2, nano-silicon dioxide particle 3, polytetrafluoroethylene ethylene layer 4.
Specific embodiment
Embodiment 1
As shown in Figures 2 and 3, a kind of microporous teflon membran, including membrane body 1, in having in the membrane body 1
Dead level 2, the hollow layer 2 is interior to have hollow nano-silicon dioxide particle 3.Nano-silicon dioxide particle 3 is spherical hollow
Structure.
Membrane body 1 further includes the polytetrafluoroethylene ethylene layer 4 positioned at 2 both sides of hollow layer, the polytetrafluoroethyl-ne positioned at 2 both sides of hollow layer
Outside the nano-silicon dioxide particle 3 that alkene layer 4 is wrapped in hollow layer 2 and it is connected with each other.Hollow layer 2 is by least one layer tiling
Nano-silicon dioxide particle 3 forms.
This microporous teflon membran includes the nano-silicon dioxide particle of 0.1wt% and the PTFE of 99.9wt%.To
It is prepared by lower step：
1) PTFE and nano-silicon dioxide particle are subjected to batch mixing in high-speed mixer, mixture is put into mold and is pressed into
Green compact, high-speed mixer are the prior art, rotating speed 2200rpm, incorporation time 30mins,
2) green compact are sintered the film that 0.03mm thickness is lathed after 8h at 380 DEG C.
Embodiment 2
As shown in Figure 1, a kind of microporous teflon membran, including membrane body 1, has hollow layer in the membrane body 1
2, the hollow layer 2 is interior to have hollow nano-silicon dioxide particle 3.Nano-silicon dioxide particle 3 is spherical hollow structure.
Membrane body 1 further includes the polytetrafluoroethylene ethylene layer 4 positioned at 2 both sides of hollow layer, the polytetrafluoroethyl-ne positioned at 2 both sides of hollow layer
Outside the nano-silicon dioxide particle 3 that alkene layer 4 is wrapped in hollow layer 2 and it is connected with each other.It is described with reference to shown in Fig. 4 and Fig. 5
If hollow layer 2 is made of dried layer nano-silicon dioxide particle 3.
Preferably, if the nano-silicon dioxide particle 3 in dried layer nano-silicon dioxide particle 3 is interlaced.
This microporous teflon membran includes the nano-silicon dioxide particle of 30wt% and the PTFE of 70wt%.With following step
It is rapid to prepare：
1) PTFE and nano-silicon dioxide particle are subjected to batch mixing in high-speed mixer, mixture is put into mold and is pressed into
Green compact, high-speed mixer are the prior art, rotating speed 2000rpm, incorporation time 40mins,
2) green compact are sintered the film for being lathed 1.5mm thickness afterwards for 24 hours at 380 DEG C.
In the present embodiment, the thickness of hollow layer 2 is 1 with the thickness ratio of polytetrafluoroethylene ethylene layer 4:1.
The membrane porosity of the present embodiment has excellent intensity and toughness, the present embodiment is by hollow up to more than 30%
Nano-silicon dioxide particle make, can not only reduce the pollution to ambient air, it is ensured that production is safer.
Embodiment 3
The present embodiment is essentially identical with embodiment 1 or 2, the difference is that, microporous teflon membran includes 1wt%'s
The PTFE of nano-silicon dioxide particle and 99wt%.
Embodiment 4
The present embodiment is essentially identical with embodiment 1 or 2, the difference is that, microporous teflon membran includes 20wt%
Nano-silicon dioxide particle and 80wt% PTFE.
Embodiment 5
The present embodiment is essentially identical with embodiment 1 or 2, the difference is that, this microporous teflon membran includes
The nano-silicon dioxide particle of 16wt% and the PTFE of 84wt%.
It is prepared with following steps：
1) PTFE and nano-silicon dioxide particle are subjected to batch mixing in high-speed mixer, mixture is put into mold and is pressed into
Green compact,
2) green compact are sintered the film that 1mm thickness is lathed after 12h at 370 DEG C.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
Generation, but without departing from spirit of the invention or beyond the scope of the appended claims.
Although membrane body 1, hollow layer 2, nano-silicon dioxide particle 3, polytetrafluoroethylene ethylene layer 4 etc. is used more herein
Term, but it does not preclude the possibility of using other terms.The use of these items is only for more easily describe and explain
The essence of the present invention；Any one of the additional limitations is construed as all to disagree with spirit of the present invention.
Claims (10)
1. a kind of microporous teflon membran, including membrane body (1), which is characterized in that have in the membrane body (1) hollow
Layer (2), the hollow layer (2) is interior to have hollow nano-silicon dioxide particle (3).
A kind of 2. microporous teflon membran according to claim 1, which is characterized in that the nanometer titanium dioxide silicon grain
Sub (3) are spherical hollow structure.
3. a kind of microporous teflon membran according to claim 2, which is characterized in that the membrane body (1) also wraps
Include the polytetrafluoroethylene ethylene layer (4) positioned at hollow layer (2) both sides.
4. a kind of microporous teflon membran according to claim 2, which is characterized in that the hollow layer (2) is by extremely
Nano-silicon dioxide particle (3) composition of few one layer of tiling.
5. a kind of microporous teflon membran according to claim 2, which is characterized in that the hollow layer (2) if by
Dried layer nano-silicon dioxide particle (3) forms.
6. a kind of microporous teflon membran according to claim 5, which is characterized in that if the dried layer nano-silica
Nano-silicon dioxide particle (3) in SiClx particle (3) is interlaced.
A kind of 7. microporous teflon membran according to claim 1, which is characterized in that this microporous teflon membran bag
Include the nano-silicon dioxide particle of 0.1-30wt% and the PTFE of 70-99.9wt%.
A kind of 8. microporous teflon membran according to claim 7, which is characterized in that the polytetrafluoroethylene (PTFE) micropore
Film includes the nano-silicon dioxide particle of 1-20wt% and the PTFE of 80-99wt%.
A kind of 9. microporous teflon membran according to claim 8, which is characterized in that this microporous teflon membran bag
Include the nano-silicon dioxide particle of 16wt% and the PTFE of 84wt%.
10. according to a kind of microporous teflon membran described in claim 7-9 any one, which is characterized in that with following step
It is rapid to prepare：
1) PTFE and nano-silicon dioxide particle are subjected to batch mixing in high-speed mixer, mixture, which is put into mold, is pressed into life
Base,
2) green compact are sintered the film that 0.03-1.500mm thickness is lathed after 8-24h at 380 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711163821.7A CN108079803A (en) | 2017-11-21 | 2017-11-21 | A kind of microporous teflon membran |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711163821.7A CN108079803A (en) | 2017-11-21 | 2017-11-21 | A kind of microporous teflon membran |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108079803A true CN108079803A (en) | 2018-05-29 |
Family
ID=62172752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711163821.7A Pending CN108079803A (en) | 2017-11-21 | 2017-11-21 | A kind of microporous teflon membran |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108079803A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001358415A (en) * | 2000-06-16 | 2001-12-26 | Nippon Pillar Packing Co Ltd | Printed circuit board |
| CN101921427A (en) * | 2010-08-06 | 2010-12-22 | 奇瑞汽车股份有限公司 | Functional high-polymer decorative composite material and preparation method thereof |
| CN102582136A (en) * | 2012-02-21 | 2012-07-18 | 南京工业大学 | Transparent heat insulating material with multilayer composite structure and preparation method thereof |
| CN104334673A (en) * | 2012-05-22 | 2015-02-04 | 积水化学工业株式会社 | Sheet-shaped seal member, and layered sheet-shaped seal member |
| CN104761740A (en) * | 2015-04-17 | 2015-07-08 | 陕西科技大学 | Preparation method of hollow silicon dioxide/polyacrylate composite film |
| CN106009428A (en) * | 2016-05-13 | 2016-10-12 | 电子科技大学 | Silicon dioxide filled PTFE composite and preparing method thereof |
| CN207533065U (en) * | 2017-11-21 | 2018-06-26 | 浙江德清科赛塑料制品有限公司 | A kind of microporous teflon membran |
-
2017
- 2017-11-21 CN CN201711163821.7A patent/CN108079803A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001358415A (en) * | 2000-06-16 | 2001-12-26 | Nippon Pillar Packing Co Ltd | Printed circuit board |
| CN101921427A (en) * | 2010-08-06 | 2010-12-22 | 奇瑞汽车股份有限公司 | Functional high-polymer decorative composite material and preparation method thereof |
| CN102582136A (en) * | 2012-02-21 | 2012-07-18 | 南京工业大学 | Transparent heat insulating material with multilayer composite structure and preparation method thereof |
| CN104334673A (en) * | 2012-05-22 | 2015-02-04 | 积水化学工业株式会社 | Sheet-shaped seal member, and layered sheet-shaped seal member |
| CN104761740A (en) * | 2015-04-17 | 2015-07-08 | 陕西科技大学 | Preparation method of hollow silicon dioxide/polyacrylate composite film |
| CN106009428A (en) * | 2016-05-13 | 2016-10-12 | 电子科技大学 | Silicon dioxide filled PTFE composite and preparing method thereof |
| CN207533065U (en) * | 2017-11-21 | 2018-06-26 | 浙江德清科赛塑料制品有限公司 | A kind of microporous teflon membran |
Non-Patent Citations (1)
| Title |
|---|
| 沈新元: "《高分子材料加工原理》", 科学技术文献出版社, pages: 139 - 140 * |
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