CN107261867A - A kind of preparation method of super water-purifying filter film - Google Patents
A kind of preparation method of super water-purifying filter film Download PDFInfo
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- CN107261867A CN107261867A CN201710681727.4A CN201710681727A CN107261867A CN 107261867 A CN107261867 A CN 107261867A CN 201710681727 A CN201710681727 A CN 201710681727A CN 107261867 A CN107261867 A CN 107261867A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/40—Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters
- B01D71/42—Polymers of nitriles, e.g. polyacrylonitrile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D71/54—Polyureas; Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
The present invention relates to a kind of preparation method of super water-purifying filter film, belong to field of environment engineering.The preparation method of the present invention adds a certain proportion of activated carbon granule in the macromolecule material solution for being dissolved in organic solvent, using orientation freezing technology control ice-crystal growth direction, forms regular structure.Aqueous phase macromolecule material solution after freezing is freeze-dried under vacuum low-temperature environment forms doughnut array structure, improves filter efficiency.Organic solvent selects the organic solvent of high freezing point in the present invention, greatly shortens freeze-off time, it is to avoid the loss of the energy, and the preparation method technique of the present invention is simple, with low cost；Super water-purifying filter film prepared by the absorption property of the inventive method binding activity charcoal has uniform aperture, can be widely applied to the fields such as chemical industry, oil, light industry, daily use chemicals.
Description
Technical field
The present invention relates to a kind of preparation method of super water-purifying filter film, belong to field of environment engineering.
Background technology
Activated carbon is a kind of black porosu solid carbonaceous, by coal by crushing, being molded or with uniform coal grain through charcoal, activation
Production.The specific surface area of normal activated carbon is in 500~1700m2/ g has very strong absorption property, extensive use and purification of water quality
Field, can effectively adsorb the chemical agent such as chlorine residue in water, stink, heterochromatic, agricultural chemicals；Accurate active carbon filter core, can be effective
Bacterium, toxin, heavy metal gone in water removal etc..
At present, the research on activated carbon in terms of water purification causes the concern of vast domestic and international research work.Such as patent one
Kind plastic antibacterial foaming activity charcoal water purification catridge and preparation method, the invention is by cresols urea formaldehyde, curing agent, anion table
Face activating agent, antiseptic and foaming agent are blended by a certain percentage, finally give antibacterial foaming activity charcoal water purification catridge, the filter core phase
The high purifying water effect of intercommunicated open cell porous structure.But substantial amounts of chemical reagent is added in the patent production technology, once make
Possible permanent damage can be caused to environment with after discarding, and process is complex, therefore cause the increase of production cost.
07 month 2015 Chinese patent disclosed in 10 days：A kind of activated carbon filter filter core, it includes cutting ferrule and activated carbon
Rod core；Through hole is not machined with cutting ferrule body, the holding tank for installing active carbon stick core is processed in its underpart；In order to strengthen its structure
Intensity, outside is respectively provided with nonwoven layer in active carbon stick.Current enter on the outside of the active carbon stick core, after filtering current from
Flowed out in through hole, obtained effective purification.The activated carbon filter filter element device of the patented invention is complicated, is unfavorable for actual life
Use living, simultaneously because the activated carbon limited absorption life-span, once very big waste can be produced to resource by abandoning.
Chinese invention patent：Anion sintering activity charcoal water purification catridge and preparation method thereof, the inventive method will be by that will live
Property powdered carbon, anion composite powder, polyethylene, sodium metasilicate are blended according to a certain percentage, then obtain compressing blank sintering
Water purification catridge.The water purification catridge is due to introducing anion composite powder so that quote magnetic water, molten with other without any mineral matter
Go out thing, improve cleaning water.But the preparation process of the filter core uses substantial amounts of chemical reagent, and is sintered, energy is wasted
The adsorptivity of activated carbon in itself can be weakened while source in sintering process, activated carbon water purification ability is reduced.
The content of the invention
There is problem for above-mentioned, it is an object of the invention to provide a kind of aqueous phase high polymer material doughnut array material
The preparation method of material, to achieve the above object, technical scheme：
A kind of preparation method of super water-purifying filter film, described preparation method is carried out according to the following steps：
A. the preparation of high polymer material/Actidose
High polymer material is added in dimethyl sulfoxide or Isosorbide-5-Nitrae-dioxane, by stirring until being completely dissolved, Xiang Rong
Liquid, which adds activated carbon and stirred, is placed in 2~5h in the environment that vacuum is 0.05~0.1MPa after 1~4h, remove the gas in solution
Bubble, that is, obtain high polymer material/Actidose.
Wherein, described high polymer material is one kind in polyurethane or polyacrylonitrile or PLA.
The specification of described activated carbon is 800~900 mesh.
Described activated carbon and the mass ratio of high polymer material are 1：1~2：1.
The mass fraction of described high polymer material/Actidose is 4~6%.
B. the preparation of high polymer material/activated carbon bodies
By stent putting above metallic conductor, metallic conductor is immersed in liquid nitrogen, then the macromolecule that will be prepared through a steps
Material/Actidose is poured into mould, forms the solution layer that height is 5~10mm in a mold,
In the presence of liquid nitrogen cryogenics, high polymer material/Actidose in mould along mould vertical direction by it is lower extremely
On slowly solidify to form using organic solvent crystal as core, high polymer material and activated carbon are the column body unit of skin, and adjacent list
The base substrate of high polymer material/activated carbon bodies of common wall, base substrate is taken out from mould between first body, standby.
Wherein, mould is the insertion column that the wall thickness that polytetrafluoroethylmaterial material is made is 3~10mm.
C. the preparation of super water-purifying filter film
Base substrate prepared by above-mentioned b step is placed in that temperature is -55~-65 DEG C and vacuum is freezing in the environment of 2~5Pa
Dry, remove the core in base substrate cylindrical body unit, formed using aperture as 30~100 μm, wall thickness is 1~5 μm of hollow tube,
And obtain super water-purifying filter film after the array structure of wall, 24~36h are total between adjacent hollow pipe.
The metallic conductor is one kind in copper conductor or aluminium conductor or silver conductor.
As a result of above technical scheme, the present invention adds in preparation process and can effectively adsorb chlorine residue in water, smelly
The chemical agent activated carbon granule such as taste, heterochromatic, agricultural chemicals；Further, since the adsorption effect of activated carbon has close ties with its particle diameter,
As particle diameter is smaller, filter area is also big, and its adsorption effect is better, therefore, and the specification of activated carbon is 800~900 mesh.Poly- ammonia
These three high polymer material materials of ester, polyacrylonitrile and PLA have good chemical stability, can extend filter material
The service life of material.
The preparation method of the present invention is placed on metallic conductor block using orientation freezing technology induction ice-crystal growth, mould,
Metallic conductor is immersed in liquid nitrogen, the open upper end of mould, and the height in the low temperature of liquid nitrogen, mould is transmitted by lower end metallic conductor
Molecular material/Actidose slowly solidifies from the bottom to top along mould vertical direction, and high polymer material/activated carbon is fixed in solution
Repel lower progress aggregation rearrangement to the pushing of growth solidification ice crystal, ultimately form using organic solvent crystal as core, aqueous phase macromolecule
Material is the column body unit of skin, and the base substrate of the doughnut array structure of wall, curing molding altogether between adjacent cells body
Base substrate afterwards causes the sandwich layer in each unit body directly to distil removal under low-pressure low-temperature environment, that is, obtain using aperture as 30~
100 μm, wall thickness is 1~5 μm of doughnut, and the ultra-clean water filtration of the array structure of wall altogether between adjacent hollow fiber
Film.
In order to avoid ambient temperature produces influence to freezing solution, so as to ensure the final integrality of material, mould
Material selection is the polytetrafluoroethylmaterial material of heat conductivility difference and with certain wall thickness.In addition, in order that obtaining solution
Freeze within a short period of time, reduce the undue waste of the energy, mould selects the column of insertion, so contributes to metallic conductor
Directly contacted with solution；The preferable copper of metallic conductor selection thermal conductivity factor, aluminium or silver；Organic solvent selection has high chill point
Dimethyl sulfoxide (DMSO) or Isosorbide-5-Nitrae-dioxane in one of which.The solution layer height that solution is formed in a mold is 5~10mm,
Ultimately form the thick super water-purifying filter films of 5~10mm, the ultra-clean water filtration formed when solution layer height is relatively low in freezing process
Film dynamic performance is poor, when solution layer height is higher, is unfavorable for solution quick freezing, wastes the substantial amounts of energy, and work as solution
When thickness is spent, final water purification film thickness is thicker, substantially reduces its filter effect, therefore the height of solution is finally 5 in a mold
Between~10mm.
Solution is in course of dissolution because stirring can produce substantial amounts of bubble, and bubble destroys array structure in freezing process,
Therefore solution needs bubble removing before orientation is freezed, and is mainly realized by the method for vacuum defoamation.The solution being stirred is put
Deaeration processing is carried out in the environment of vacuum is 0.05~0.1MPa, in order to fully remove the bubble in solution, according to solution
The difference of the mass fraction of middle high polymer material/activated carbon bodies, under environment under low pressure, the time of standing is 2~5 hours.
In the forming process of base substrate, with the increase of the mass fraction of high polymer material/activated carbon bodies in solution, in
Empty array structure is become apparent from, but its aperture is gradually reduced, and wall thickness increase, therefore method controllable aperture simple whereby is big
It is small, meet different places use requirement.It is molten however as the mass fraction increase of high polymer material/activated carbon bodies in solution
The viscosity of liquid is gradually increasing, and viscosity is excessive, and the organic solvent crystal that oriented growth solidifies in freezing process does not have sufficiently large
The high polymer material for squeezing and repelling in solution is pushed, it is carried out aggregation rearrangement, the hole ultimately formed gradually tends to closure state, become
Filter effect can be influenceed in use in the hole of closure.Therefore, the quality of the mass fraction of high polymer material/activated carbon bodies point
Numerical control system is 4~6%.Wherein, the mass ratio of activated carbon and high polymer material is 1：1~2：1, when activated carbon content is less,
Adsorption effect is not obvious enough, but when activated carbon content it is higher when, substantial amounts of activated carbon blocks space and liquid can not be led to
Cross, reduce filter effect.
The preparation method of the present invention is using orientation freezing technology induction ice-crystal growth and Freeze Drying Technique, the letter of its technique
Single, cost is low, does not result in the waste of resource and the pollution of environment.
Embodiment
The present invention is described in further detail with reference to specific embodiment：
Activated carbon is used as a kind of black porosu solid carbonaceous, with very strong absorption property, extensive use and purification of water quality
Field, can effectively adsorb the chemical agent such as chlorine residue in water, stink, heterochromatic, agricultural chemicals；Accurate active carbon filter core, can be effective
Bacterium, toxin, heavy metal gone in water removal etc..Freezing technology induction ice-crystal growth is oriented, is removed under low-temp low-pressure environment molten
Agent composition forms highly oriented doughnut array structure so that high polymer material material has larger specific surface area, therefore tool
There are preferable adsorptivity and water imbibition.
A kind of preparation method of super water-purifying filter film, described preparation method is carried out according to the following steps：
A. the preparation of high polymer material/Actidose
By one kind in these three high polymer materials in polyurethane or polyacrylonitrile or PLA be added to dimethyl sulfoxide or
In Isosorbide-5-Nitrae-dioxane, by stirring until being completely dissolved, using the mass ratio of activated carbon and high polymer material as 1：1~2：1 to
The environment that vacuum is 0.05~0.1MPa is placed in after the activated carbon and 1~4h of stirring that specification is 800~900 mesh are added in solution
In 2~5h, remove solution in bubble, that is, obtain mass fraction be 4~6% high polymer material/Actidose.
B. the preparation of high polymer material/activated carbon bodies
By the wall thickness being made up of polytetrafluoroethylmaterial material for 3~10mm insertion column stent putting by copper or aluminium or
The top for the metallic conductor that silver is made, metallic conductor is immersed in liquid nitrogen, then the high polymer material/activity that will be prepared through a steps
Charcoal solution is poured into mould, the solution layer that height is 5~10mm is formed in a mold, in the presence of liquid nitrogen cryogenics, in mould
High polymer material/Actidose slowly solidify to form from the bottom to top using organic solvent crystal as core along mould vertical direction,
High polymer material and the column body unit that activated carbon is skin, and high polymer material/activated carbon of wall altogether between adjacent cells body
The base substrate of base substrate, base substrate is taken out from mould, standby.
C. the preparation of super water-purifying filter film
Base substrate prepared by above-mentioned b step is placed in that temperature is -55~-65 DEG C and vacuum is freezing in the environment of 2~5Pa
Dry, remove the core in base substrate cylindrical body unit, formed using aperture as 30~100 μm, wall thickness is 1~5 μm of hollow tube,
And obtain super water-purifying filter film after the array structure of wall, 24~36h are total between adjacent hollow pipe.
Specific embodiment
Embodiment one
A. the preparation of polyurethane/Actidose
2g polyurethane is added in 96g dimethyl sulfoxide, by stirring until being completely dissolved, 2g is added into solution
Specification is the activated carbon of 800 mesh and stirs 2h in the environment that vacuum is 0.05MPa is placed in after 1h, removes the bubble in solution,
Obtain polyurethane/Actidose that mass fraction is 4%.
B. the preparation of polyurethane/activated carbon bodies
By the wall thickness being made up of polytetrafluoroethylmaterial material for 3mm insertion column stent putting by copper or aluminium or silvery
Into metallic conductor top, metallic conductor is immersed in liquid nitrogen, then the high polymer material/activated carbon prepared through a steps is molten
Liquid is poured into mould, forms the solution layer that height is 5mm in a mold, in the presence of liquid nitrogen cryogenics, and the polyurethane in mould/
Actidose is slowly solidify to form using dimethyl sulfoxide crystal as core from the bottom to top along mould vertical direction, polyurethane and activated carbon
For the column body unit of skin, and the base substrate of polyurethane/activated carbon bodies of wall altogether between adjacent cells body, by base substrate from mould
Take out, it is standby.
C. the preparation of super water-purifying filter film
Base substrate prepared by above-mentioned b step is placed in that temperature is -55 DEG C and vacuum is freeze-drying in the environment of 5Pa, goes
Except the core in base substrate cylindrical body unit, formed using aperture as 70~100 μm, wall thickness is 1~2 μm of hollow tube, and it is adjacent in
Between blank pipe super water-purifying filter film is obtained after the array structure of common wall, 36h.
Embodiment two
A. the preparation of polyurethane/Actidose
2g polyurethane is added in 95g Isosorbide-5-Nitrae-dioxane, by stirring until being completely dissolved, added into solution
Enter activated carbon that 3g specifications are 850 mesh and stir and 3h in the environment that vacuum is 0.07MPa is placed in after 2.5h, remove in solution
Bubble, that is, obtain polyurethane/Actidose that mass fraction is 5%.
B. the preparation of polyurethane/activated carbon bodies
By the wall thickness being made up of polytetrafluoroethylmaterial material for 7mm insertion column stent putting by copper or aluminium or silvery
Into metallic conductor top, metallic conductor is immersed in liquid nitrogen, then the high polymer material/activated carbon prepared through a steps is molten
Liquid is poured into mould, forms the solution layer that height is 7mm in a mold, in the presence of liquid nitrogen cryogenics, and the polyurethane in mould/
Actidose is slowly solidify to form using Isosorbide-5-Nitrae-dioxane crystal as core from the bottom to top along mould vertical direction, polyurethane and work
Property charcoal be skin column body unit, and between adjacent cells body altogether wall polyurethane/activated carbon bodies base substrate, by base substrate from
Mould takes out, standby.
C. the preparation of super water-purifying filter film
Base substrate prepared by above-mentioned b step is placed in that temperature is -60 DEG C and vacuum is freeze-drying in the environment of 3Pa, goes
Except the core in base substrate cylindrical body unit, formed using aperture as 50~70 μm, wall thickness is 2~3 μm of hollow tube, and adjacent hollow
Between pipe super water-purifying filter film is obtained after the array structure of common wall, 30h.
Embodiment three
A. the preparation of polyurethane/Actidose
2g polyurethane is added in 94g dimethyl sulfoxide, by stirring until being completely dissolved, 4g is added into solution
Specification is the activated carbon of 900 mesh and stirs 5h in the environment that vacuum is 0.1MPa is placed in after 4h, removes the bubble in solution, i.e.,
Obtain polyurethane/Actidose that mass fraction is 6%.
B. the preparation of polyurethane/activated carbon bodies
By the wall thickness being made up of polytetrafluoroethylmaterial material for 10mm insertion column stent putting by copper or aluminium or silver
The top for the metallic conductor being made, metallic conductor is immersed in liquid nitrogen, then the high polymer material/activated carbon that will be prepared through a steps
Solution is poured into mould, forms the solution layer that height is 10mm, in the presence of liquid nitrogen cryogenics, the poly- ammonia in mould in a mold
Ester/Actidose is slowly solidify to form using dimethyl sulfoxide crystal as core from the bottom to top along mould vertical direction, polyurethane and work
Property charcoal be skin column body unit, and between adjacent cells body altogether wall polyurethane/activated carbon bodies base substrate, by base substrate from
Mould takes out, standby.
C. the preparation of super water-purifying filter film
Base substrate prepared by above-mentioned b step is placed in that temperature is -65 DEG C and vacuum is freeze-drying in the environment of 2Pa, goes
Except the core in base substrate cylindrical body unit, formed using aperture as 30~50 μm, wall thickness is 3~5 μm of hollow tube, and adjacent hollow
Between pipe super water-purifying filter film is obtained after the array structure of common wall, 24h.
Example IV
A. the preparation of polyacrylonitrile/Actidose
2g polyacrylonitrile is added in 96g Isosorbide-5-Nitrae-dioxane, by stirring until being completely dissolved, into solution
Add 2g specifications to be the activated carbon of 800 mesh and stir and be placed in 2h in the environment that vacuum is 0.05MPa after 1h, remove in solution
Bubble, that is, obtain polyacrylonitrile/Actidose that mass fraction is 4%.
B. the preparation of polyacrylonitrile/activated carbon bodies
By the wall thickness being made up of polytetrafluoroethylmaterial material for 3mm insertion column stent putting by copper or aluminium or silvery
Into metallic conductor top, metallic conductor is immersed in liquid nitrogen, then the high polymer material/activated carbon prepared through a steps is molten
Liquid is poured into mould, forms the solution layer that height is 5mm, in the presence of liquid nitrogen cryogenics, the polypropylene in mould in a mold
Nitrile/Actidose is slowly solidify to form using Isosorbide-5-Nitrae-dioxane crystal as core from the bottom to top along mould vertical direction, polypropylene
Nitrile and the column body unit that activated carbon is skin, and the base substrate of polyacrylonitrile/activated carbon bodies of wall altogether between adjacent cells body,
Base substrate is taken out from mould, it is standby.
C. the preparation of super water-purifying filter film
Base substrate prepared by above-mentioned b step is placed in that temperature is -55 DEG C and vacuum is freeze-drying in the environment of 5Pa, goes
Except the core in base substrate cylindrical body unit, formed using aperture as 70~100 μm, wall thickness is 1~2 μm of hollow tube, and it is adjacent in
Between blank pipe super water-purifying filter film is obtained after the array structure of common wall, 36h.
Embodiment five
A. the preparation of polyacrylonitrile/Actidose
2g polyacrylonitrile is added in 95g dimethyl sulfoxide, by stirring until being completely dissolved, added into solution
3g specifications are the activated carbon of 850 mesh and stir 3h in the environment that vacuum is 0.07MPa is placed in after 2.5h, remove the gas in solution
Bubble, that is, obtain polyacrylonitrile/Actidose that mass fraction is 5%.
B. the preparation of polyacrylonitrile/activated carbon bodies
By the wall thickness being made up of polytetrafluoroethylmaterial material for 7mm insertion column stent putting by copper or aluminium or silvery
Into metallic conductor top, metallic conductor is immersed in liquid nitrogen, then the high polymer material/activated carbon prepared through a steps is molten
Liquid is poured into mould, forms the solution layer that height is 7mm, in the presence of liquid nitrogen cryogenics, the polypropylene in mould in a mold
Nitrile/Actidose is slowly solidify to form using dimethyl sulfoxide crystal as core from the bottom to top along mould vertical direction, polyacrylonitrile and
Activated carbon is the column body unit of skin, and the base substrate of polyacrylonitrile/activated carbon bodies of wall altogether between adjacent cells body, by base
Body takes out from mould, standby.
C. the preparation of super water-purifying filter film
Base substrate prepared by above-mentioned b step is placed in that temperature is -60 DEG C and vacuum is freeze-drying in the environment of 3Pa, goes
Except the core in base substrate cylindrical body unit, formed using aperture as 50~70 μm, wall thickness is 2~3 μm of hollow tube, and adjacent hollow
Between pipe super water-purifying filter film is obtained after the array structure of common wall, 30h.
Embodiment six
A. the preparation of polyacrylonitrile/Actidose
2g polyacrylonitrile is added in 94g Isosorbide-5-Nitrae-dioxane, by stirring until being completely dissolved, into solution
Add 4g specifications to be the activated carbon of 900 mesh and stir and be placed in 5h in the environment that vacuum is 0.1MPa after 4h, remove in solution
Bubble, that is, obtain polyacrylonitrile/Actidose that mass fraction is 6%.
B. the preparation of polyacrylonitrile/activated carbon bodies
By the wall thickness being made up of polytetrafluoroethylmaterial material for 10mm insertion column stent putting by copper or aluminium or silver
The top for the metallic conductor being made, metallic conductor is immersed in liquid nitrogen, then the high polymer material/activated carbon that will be prepared through a steps
Solution is poured into mould, forms the solution layer that height is 10mm, in the presence of liquid nitrogen cryogenics, poly- third in mould in a mold
Alkene nitrile/Actidose is slowly solidify to form using Isosorbide-5-Nitrae-dioxane crystal as core from the bottom to top along mould vertical direction, and poly- third
Alkene nitrile and the column body unit that activated carbon is skin, and the base of polyacrylonitrile/activated carbon bodies of wall altogether between adjacent cells body
Body, base substrate is taken out from mould, standby.
C. the preparation of super water-purifying filter film
Base substrate prepared by above-mentioned b step is placed in that temperature is -65 DEG C and vacuum is freeze-drying in the environment of 2Pa, goes
Except the core in base substrate cylindrical body unit, formed using aperture as 30~50 μm, wall thickness is 3~5 μm of hollow tube, and adjacent hollow
Between pipe super water-purifying filter film is obtained after the array structure of common wall, 24h.
Embodiment seven
A. the preparation of PLA/Actidose
2g PLA is added in 96g dimethyl sulfoxide, by stirring until being completely dissolved, 2g is added into solution
Specification is the activated carbon of 800 mesh and stirs 2h in the environment that vacuum is 0.05MPa is placed in after 1h, removes the bubble in solution,
Obtain PLA/Actidose that mass fraction is 4%.
B. the preparation of PLA/activated carbon bodies
By the wall thickness being made up of polytetrafluoroethylmaterial material for 3mm insertion column stent putting by copper or aluminium or silvery
Into metallic conductor top, metallic conductor is immersed in liquid nitrogen, then the high polymer material/activated carbon prepared through a steps is molten
Liquid is poured into mould, forms the solution layer that height is 5mm in a mold, in the presence of liquid nitrogen cryogenics, and the PLA in mould/
Actidose is slowly solidify to form using dimethyl sulfoxide crystal as core from the bottom to top along mould vertical direction, PLA and activated carbon
For the column body unit of skin, and the base substrate of PLA/activated carbon bodies of wall altogether between adjacent cells body, by base substrate from mould
Take out, it is standby.
C. the preparation of super water-purifying filter film
Base substrate prepared by above-mentioned b step is placed in that temperature is -55 DEG C and vacuum is freeze-drying in the environment of 5Pa, goes
Except the core in base substrate cylindrical body unit, formed using aperture as 70~100 μm, wall thickness is 1~2 μm of hollow tube, and it is adjacent in
Between blank pipe super water-purifying filter film is obtained after the array structure of common wall, 36h.
Embodiment eight
A. the preparation of PLA/Actidose
2g PLA is added in 95g Isosorbide-5-Nitrae-dioxane, by stirring until being completely dissolved, added into solution
Enter activated carbon that 3g specifications are 850 mesh and stir and 3h in the environment that vacuum is 0.07MPa is placed in after 2.5h, remove in solution
Bubble, that is, obtain PLA/Actidose that mass fraction is 5%.
B. the preparation of PLA/activated carbon bodies
By the wall thickness being made up of polytetrafluoroethylmaterial material for 7mm insertion column stent putting by copper or aluminium or silvery
Into metallic conductor top, metallic conductor is immersed in liquid nitrogen, then the high polymer material/activated carbon prepared through a steps is molten
Liquid is poured into mould, forms the solution layer that height is 7mm in a mold, in the presence of liquid nitrogen cryogenics, and the PLA in mould/
Actidose is slowly solidify to form using Isosorbide-5-Nitrae-dioxane crystal as core from the bottom to top along mould vertical direction, PLA and work
Property charcoal be skin column body unit, and between adjacent cells body altogether wall PLA/activated carbon bodies base substrate, by base substrate from
Mould takes out, standby.
C. the preparation of super water-purifying filter film
Base substrate prepared by above-mentioned b step is placed in that temperature is -60 DEG C and vacuum is freeze-drying in the environment of 3Pa, goes
Except the core in base substrate cylindrical body unit, formed using aperture as 50~70 μm, wall thickness is 2~3 μm of hollow tube, and adjacent hollow
Between pipe super water-purifying filter film is obtained after the array structure of common wall, 30h.
Embodiment nine
A. the preparation of PLA/Actidose
2g PLA is added in 94g dimethyl sulfoxide, by stirring until being completely dissolved, 4g is added into solution
Specification is the activated carbon of 900 mesh and stirs 5h in the environment that vacuum is 0.1MPa is placed in after 4h, removes the bubble in solution, i.e.,
Obtain PLA/Actidose that mass fraction is 6%.
B. the preparation of PLA/activated carbon bodies
By the wall thickness being made up of polytetrafluoroethylmaterial material for 10mm insertion column stent putting by copper or aluminium or silver
The top for the metallic conductor being made, metallic conductor is immersed in liquid nitrogen, then the high polymer material/activated carbon that will be prepared through a steps
Solution is poured into mould, forms the solution layer that height is 10mm, in the presence of liquid nitrogen cryogenics, the poly- breast in mould in a mold
Acid/Actidose is slowly solidify to form using dimethyl sulfoxide crystal as core from the bottom to top along mould vertical direction, PLA and work
Property charcoal be skin column body unit, and between adjacent cells body altogether wall PLA/activated carbon bodies base substrate, by base substrate from
Mould takes out, standby.
C. the preparation of super water-purifying filter film
Base substrate prepared by above-mentioned b step is placed in that temperature is -65 DEG C and vacuum is freeze-drying in the environment of 2Pa, goes
Except the core in base substrate cylindrical body unit, formed using aperture as 30~50 μm, wall thickness is 3~5 μm of hollow tube, and adjacent hollow
Between pipe super water-purifying filter film is obtained after the array structure of common wall, 24h.
Claims (2)
1. a kind of preparation method of super water-purifying filter film, it is characterised in that described preparation method is carried out according to the following steps：
A. the preparation of high polymer material/Actidose
High polymer material is added in dimethyl sulfoxide or Isosorbide-5-Nitrae-dioxane, by stirring until be completely dissolved, to solution plus
Enter activated carbon and stir and 2~5h in the environment that vacuum is 0.05~0.1MPa is placed in after 1~4h, remove the bubble in solution,
Obtain high polymer material/Actidose；
Wherein, described high polymer material is one kind in polyurethane or polyacrylonitrile or PLA；
The specification of described activated carbon is 800~900 mesh；
Described activated carbon and the mass ratio of high polymer material are 1：1~2：1；
The mass fraction of described high polymer material/Actidose is 4~6%；
B. the preparation of high polymer material/activated carbon bodies
By stent putting above metallic conductor, metallic conductor is immersed in liquid nitrogen, then the macromolecule material that will be prepared through a steps
Material/Actidose is poured into mould, forms the solution layer that height is 5~10mm in a mold, in the presence of liquid nitrogen cryogenics,
High polymer material/Actidose in mould is slowly solidify to form with organic solvent crystal from the bottom to top along mould vertical direction
For core, high polymer material and the column body unit that activated carbon is skin, and high polymer material/work of wall altogether between adjacent cells body
Property charcoal base substrate base substrate, by base substrate from mould take out, it is standby；
Wherein, mould is the insertion column that the wall thickness that polytetrafluoroethylmaterial material is made is 3~10mm；
C. the preparation of super water-purifying filter film
Base substrate prepared by above-mentioned b step be placed in temperature be -55~-65 DEG C and vacuum be freeze in the environment of 2~5Pa it is dry
It is dry, the core in base substrate cylindrical body unit is removed, is formed using aperture as 30~100 μm, wall thickness is 1~5 μm of hollow tube, and phase
Between adjacent hollow tube super water-purifying filter film is obtained after the array structure of common wall, 24~36h.
2. a kind of preparation method of the preparation method of super water-purifying filter film as claimed in claim 1, it is characterised in that：The gold
It is one kind in copper conductor or aluminium conductor or silver conductor to belong to conductor.
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