CN108579211A - A kind of graphene PP cotton composite filter elements and its preparation method and application - Google Patents
A kind of graphene PP cotton composite filter elements and its preparation method and application Download PDFInfo
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- CN108579211A CN108579211A CN201810541229.4A CN201810541229A CN108579211A CN 108579211 A CN108579211 A CN 108579211A CN 201810541229 A CN201810541229 A CN 201810541229A CN 108579211 A CN108579211 A CN 108579211A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/069—Special geometry of layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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Abstract
The invention discloses a kind of graphene PP cotton composite filter elements and its preparation method and application, the composite filter element is hollow cylindrical structure, has been arranged alternately tight structure layer, open structure layer successively from inside to outside；The tight structure layer, open structure layer are all made of the preparation of graphene PP cotton composite materials.The composite filter element is according to close-loose-close-loose structure setting, when flow passes through graphene PP cottons, since the inner surface and the outer surface of composite filter element is curved surface, and more helical form raised structures are arranged in parallel in the outer surface of composite filter element, so that reflux state is constantly presented in the flow come out from different grids in filter core, filter effect is more abundant, clean-up effect is more obvious；Silt, impurity, colloid, the suspended matter etc. in raw water can be effectively filtered out, raw water is made to obtain preliminary purification.
Description
Technical field
The present invention relates to water purification catridge technical fields, specifically, being related to a kind of graphene PP cottons composite filter element and its system
Preparation Method and application.
Background technology
Contain in usual tap water according to statistics containing harmful substances such as bacterium, heavy metal, gas with foreign flavor, pigments in tap water
There are about 2000 multiple compounds, wherein the main reason for more than 200 kinds harmful, and wherein bacterium is water pollution.Study table
It is bright：The pathogenic bacteria such as salmonella, staphylococcus aureus, Bacillus cereus and pathogenic escherichia coli in drinking water
Very serious influence can be generated on human health.Water purifier is a kind of ideal Household water purifying equipment, is used for tap water purifying,
Make to be contaminated and the tap water of not up to safe drinking water standard is after the processing of this water purifier, can be greatly improved.It can
Effectively remove iron rust, silt, chlorine residue, heterochromatic peculiar smell, organic matter, heavy metal ion and worm's ovum, red worm etc. more than 1 μm.It is existing
Have in technology, the pre-filtering device of water purifier, be usually provided with two-stage filter core, the first order is PP cotton filter element, and the second level is pressure
Contracting active carbon filter core, the two-stage filter core are set on water process access.PP filter cores adsorb suspended impurity, particle, dirt in water more
Mud etc., with the standard that micron (μm) is classification, it can be common that the pore size filters such as 1,5,10,20 μm pass through spy using melt-blown process
Different reception device so that melt-blown micro fibre forms centreless tubular article, by adjusting process combination, thus it is possible to vary fibre diameter
And density, to obtain the filter core product of various different strainabilities.Activated carbon is found to can be used to do from earlier 1900s
It is used for water process.It is the carbon of a tool cellular tissue, this some holes is exactly the surface area for increasing activated carbon adsorption impurity.
The physical property of carbonization material has great relationship with its raw material and the quality of processing procedure.Activated carbon is abutment surface cellular group
Knit adsorption of chemical species, organic contamination source, heterochromatic peculiar smell etc..In general, the activated carbon that volume is smaller, total body surface area meeting
Bigger, adsorption capacity also will be higher, but the crushing of its pipeline also can be higher.When originally water flow is larger, activated carbon filtering
The adsorption capacity of material is very limited, cannot effectively remove chlorine residue and heavy metal etc. in tap water.When activated carbon filter material
After the adsorption capacity of material reaches saturation, it is necessary to replace activated carbon filtration core, otherwise can not just play a role in filtering, and frequently replace
Activated carbon filtration core will make troubles to user, and increase use cost.Meanwhile PP cotton filter element and common activated carbon filter
Material cannot inhibit the growth of bacterium, the two-stage filter core to be changed without for a long time, can cause secondary pollution instead, bacterium is in several
What multiple increases.
Invention content
In view of the drawbacks of the prior art, the object of the present invention is to provide a kind of graphene PP cottons composite filter element and its preparation sides
Method and application.
The purpose of the present invention is what is be achieved through the following technical solutions：
The present invention provides a kind of graphene PP cotton composite filter elements, the composite filter element is hollow cylindrical structure, from it is interior to
It has been arranged alternately tight structure layer, open structure layer successively outside；The tight structure layer, open structure layer are all made of graphene PP
It is prepared by cotton composite material.
The tight structure layer, open structure layer thickness be respectively 1-3 μm, 8-10 μm；The thickness of the composite filter element
For 1.5cm-2cm.
Preferably, the density of the tight structure layer is 0.3g/cm3-0.35g/cm3, the density of the open structure layer is
0.15g/cm3-0.20g/cm3。
Preferably, more helical form raised structures, the raised structures are arranged in parallel in the outer surface of the composite filter element
The short transverse for prolonging composite filter element extends.
Preferably, the spacing between the raised structures is 0.5-1cm.
It is highly preferred that the outer surface of the composite filter element is arranged in parallel more the second raised structures of helical form, described
Two raised structures prolong composite filter element short transverse extend, and the second raised structures intersected to form with raised structures it is latticed.Institute
It is 0.5-1cm to state the spacing between the second raised structures.
Preferably, the inner surface and the outer surface of the composite filter element is curved surface, and curved surface direction is consistent.
Preferably, each tight structure layer, open structure layer are latticed, and each tight structure layer, open structure
The grid position of layer is not overlapped.
Preferably, the preparation method of the graphene PP cotton composite materials is as follows：
A, by graphene oxide ultrasonic disperse to water, graphene oxide dispersion is obtained；
B, organically-modified monomer is added into graphene dispersing solution, graft modification graphite oxide is made after high-speed stirred reaction
Alkene, drying and crushing obtain graft modification graphene oxide powder；
C, graft modification graphene oxide powder is mixed with PP cotton powder, while antioxidant, nucleating agent, cooling is added
Auxiliary agent, mixture obtained is extruded, drawing-off, surface air-dry, after pelletizing to obtain the final product.
Preferably, in step B, the organically-modified monomer is lauryl sodium sulfate；The temperature of the high-speed stirred is
50-95 DEG C, speed of agitator 200-350r/min, mixing time 1-3h.
Preferably, in step C, the grain size of the graft modification graphene oxide powder is 5-10um, and the grain size of PP cottons is
20-200μm；Graft modification graphene oxide powder and the mixed proportion of PP cotton powder are 2%-8%:92%-98%；
The extrusion temperature is 200-280 DEG C.
The present invention also provides a kind of preparation methods of graphene PP cotton composite filter elements, include the following steps：
A, graphene PP cotton composite materials are subjected to melting mixing；
B, the graphene PP cotton composite materials after melting mixing are packed into spinneret machine and carry out spinneret；When first time spinneret, filter
In-core cylinder is according to given pace autobiography, while filter core inner cylinder moves from left to right so that spiral is presented on filter core inner cylinder in spinneret
Shape；
C, continue second of spinneret, while filter core inner cylinder moves from right to left so that spiral shell is presented on filter core inner cylinder in spinneret
Shape is revolved, and there are crosspoints with the spinneret of first time；
D, repeat the above steps B and C, until the outside of spinneret whole covering filter core inner cylinder, obtains the close of first layer
Structure sheaf；
E, step B-D is repeated, the open structure layer of first layer is made on the tight structure layer of first layer；Then it repeats
Step successively be made multilayer tight structure layer and open structure layer to get the graphene PP cotton composite filter elements；
Described when preparing tight structure layer, the melt-blown rate used is 1.5*10-7L/min-2*10-7L/min, weaker zone
When melt-blown rate be 1.0*10-7L/min-1.2*10-7L/min。
The present invention also provides a kind of application of graphene PP cotton composite filter elements in purifier.
Compared with prior art, the present invention has following advantageous effect：
The filtering accuracy of graphene PP cotton composite filter elements prepared by the present invention is up to 1 μm, and filter core is in curly course, every
Helically hawk wing structure, this spline structure is presented according to close-loose-close-loose level distribution in circuit shape to silk thread in layer
Effect, the phenomenon that round-trip reflux is presented in filter core when flow enters PP cottons so that flow, which shows PP cottons, backwashes
The purpose washed, clean-up effect are more obvious.
Meanwhile flow is when entering graphene PP cotton composite filter elements, due to graphene PP cotton filter element be according to it is close-loose-
Closely-loose structure setting, when flow passes through graphene PP cottons, since the inner surface and the outer surface of composite filter element is song
Face, and more helical form raised structures are arranged in parallel in the outer surface of composite filter element so that the flow come out from different grids is mutual
It collides, the phenomenon that which water route burst point be presented, i.e., the point that flow is met has quick-fried flow phenomenon, flow constantly to be presented back in filter core
Stream mode, filter effect are more abundant.
The graphene PP cottons composite filter element of the present invention can carry out prefiltration to raw water, can effectively filter out silt in raw water,
Impurity, colloid, suspended matter etc. make raw water obtain preliminary purification.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the graphene PP cotton composite filter element structural schematic diagrams of the embodiment of the present invention 1；
Fig. 2 is the graphene PP cotton composite filter element structural schematic diagrams of the embodiment of the present invention 2；
Wherein：1- tight structure layers；2- open structure layers；3- raised structures；The second raised structures of 4-.
Specific implementation mode
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
Embodiment 1
A kind of graphene PP cotton composite filter elements are present embodiments provided, as shown in Figure 1, the composite filter element is hollow circuit cylinder
Structure has been arranged alternately tight structure layer 1, open structure layer 2 successively from inside to outside；The tight structure layer 1, open structure layer
2 are all made of the preparation of graphene PP cotton composite materials.
The tight structure layer 1, open structure layer 2 thickness be respectively 1 μm, 10 μm；The thickness of the composite filter element is
1.5cm。
The density of the tight structure layer 1 is 0.3g/cm3-0.35g/cm3, the density of the open structure layer 2 is
0.15g/cm3-0.20g/cm3。
More helical form raised structures 3 are arranged in parallel in the outer surface of the composite filter element, and the raised structures 3 prolong compound
The short transverse of filter core extends.
Spacing between the raised structures 3 is 0.5cm.
The inner surface and the outer surface of the composite filter element is curved surface, and curved surface direction is consistent.
Each tight structure layer, open structure layer are latticed, and the grid of each tight structure layer, open structure layer
Position is not overlapped.
The preparation method of the graphene PP cotton composite materials is as follows：
A, by graphene oxide ultrasonic disperse to water, graphene oxide dispersion is obtained；
B, organically-modified monomer is added into graphene dispersing solution, graft modification graphite oxide is made after high-speed stirred reaction
Alkene, drying and crushing obtain graft modification graphene oxide powder；
C, graft modification graphene oxide powder is mixed with PP cotton powder, while antioxidant, nucleating agent, cooling is added
Auxiliary agent, mixture obtained is extruded, drawing-off, surface air-dry, after pelletizing to obtain the final product.
In step B, the organically-modified monomer is lauryl sodium sulfate；The temperature of the high-speed stirred is 50-95 DEG C,
Speed of agitator is 200-350r/min, mixing time 1-3h.
In step C, the grain size of the graft modification graphene oxide powder is 5um, and the grain size of PP cottons is 20 μm；Grafting changes
Property graphene oxide powder and PP cotton powder mixed proportion be 2%:98%；
The extrusion temperature is 200-280 DEG C.
The preparation method of the graphene PP cotton composite filter elements includes the following steps：
A, graphene PP cotton composite materials are subjected to melting mixing；
B, the graphene PP cotton composite materials after melting mixing are packed into spinneret machine and carry out spinneret；When first time spinneret, filter
In-core cylinder is according to given pace autobiography, while filter core inner cylinder moves from left to right so that spiral is presented on filter core inner cylinder in spinneret
Shape；
C, continue second of spinneret, while filter core inner cylinder moves from right to left so that spiral shell is presented on filter core inner cylinder in spinneret
Shape is revolved, and there are crosspoints with the spinneret of first time；
D, repeat the above steps B and C, until the outside of spinneret whole covering filter core inner cylinder, obtains the close of first layer
Structure sheaf；
E, step B-D is repeated, the open structure layer of first layer is made on the tight structure layer of first layer；Then it repeats
Step successively be made multilayer tight structure layer and open structure layer to get the graphene PP cotton composite filter elements；
Described when preparing tight structure layer, the melt-blown rate used is 1.5*10-7L/min-2*10-7L/min, weaker zone
When melt-blown rate be 1.0*10-7L/min-1.2*10-7L/min。
Embodiment 2
A kind of graphene PP cotton composite filter elements are present embodiments provided, as shown in Fig. 2, the composite filter element is hollow circuit cylinder
Structure has been arranged alternately tight structure layer 1, open structure layer 2 successively from inside to outside；The tight structure layer 1, open structure layer
2 are all made of the preparation of graphene PP cotton composite materials.
The tight structure layer 1, open structure layer 2 thickness be respectively 3 μm, 10 μm；The thickness of the composite filter element is
1.5cm。
The density of the tight structure layer 1 is 0.3g/cm3-0.35g/cm3, the density of the open structure layer 2 is
0.15g/cm3-0.20g/cm3。
More helical form raised structures 3 are arranged in parallel in the outer surface of the composite filter element, and the raised structures 3 prolong compound
The short transverse of filter core extends.
Spacing between the raised structures 3 is 0.8cm.
More the second raised structures of helical form 4, the second protrusion knot is arranged in parallel in the outer surface of the composite filter element
Structure 4 prolong composite filter element short transverse extend, and the second raised structures 4 intersected to form with raised structures 3 it is latticed.Described second
Spacing between raised structures 4 is 0.8cm.
The inner surface and the outer surface of the composite filter element is curved surface, and curved surface direction is consistent.
Each tight structure layer, open structure layer are latticed, and the grid of each tight structure layer, open structure layer
Position is not overlapped.
The preparation method of the graphene PP cotton composite materials is as follows：
A, by graphene oxide ultrasonic disperse to water, graphene oxide dispersion is obtained；
B, organically-modified monomer is added into graphene dispersing solution, graft modification graphite oxide is made after high-speed stirred reaction
Alkene, drying and crushing obtain graft modification graphene oxide powder；
C, graft modification graphene oxide powder is mixed with PP cotton powder, while antioxidant, nucleating agent, cooling is added
Auxiliary agent, mixture obtained is extruded, drawing-off, surface air-dry, after pelletizing to obtain the final product.
In step B, the organically-modified monomer is lauryl sodium sulfate；The temperature of the high-speed stirred is 50-95 DEG C,
Speed of agitator is 200-350r/min, mixing time 1-3h.
In step C, the grain size of the graft modification graphene oxide powder is 8um, and the grain size of PP cottons is 200 μm；Grafting
The mixed proportion of modified graphene oxide powder and PP cotton powder is 5%:95%；
The extrusion temperature is 200-280 DEG C.
The preparation method of the graphene PP cotton composite filter elements is same as Example 1.
Embodiment 3
A kind of graphene PP cotton composite filter elements are present embodiments provided, as shown in Fig. 2, the composite filter element is hollow circuit cylinder
Structure has been arranged alternately tight structure layer, open structure layer successively from inside to outside；The tight structure layer, open structure layer are equal
It is prepared using graphene PP cotton composite materials.
The tight structure layer, open structure layer thickness be respectively 2 μm, 8 μm；The thickness of the composite filter element is 2cm.
The density of the tight structure layer is 0.3g/cm3-0.35g/cm3, the density of the open structure layer is 0.15g/
cm3-0.20g/cm3。
More helical form raised structures are arranged in parallel in the outer surface of the composite filter element, and the raised structures prolong composite filter
The short transverse of core extends.
Spacing between the raised structures is 1cm.
More the second raised structures of helical form, second raised structures are arranged in parallel in the outer surface of the composite filter element
Prolong composite filter element short transverse extend, and the second raised structures intersected to form with raised structures it is latticed.Second protrusion
Spacing between structure is 1cm.
The inner surface and the outer surface of the composite filter element is curved surface, and curved surface direction is consistent.
Each tight structure layer, open structure layer are latticed, and the grid of each tight structure layer, open structure layer
Position is not overlapped.
The preparation method of the graphene PP cotton composite materials is as follows：
A, by graphene oxide ultrasonic disperse to water, graphene oxide dispersion is obtained；
B, organically-modified monomer is added into graphene dispersing solution, graft modification graphite oxide is made after high-speed stirred reaction
Alkene, drying and crushing obtain graft modification graphene oxide powder；
C, graft modification graphene oxide powder is mixed with PP cotton powder, while antioxidant, nucleating agent, cooling is added
Auxiliary agent, mixture obtained is extruded, drawing-off, surface air-dry, after pelletizing to obtain the final product.
In step B, the organically-modified monomer is lauryl sodium sulfate；The temperature of the high-speed stirred is 50-95 DEG C,
Speed of agitator is 200-350r/min, mixing time 1-3h.
In step C, the grain size of the graft modification graphene oxide powder is 10um, and the grain size of PP cottons is 100 μm；Grafting
The mixed proportion of modified graphene oxide powder and PP cotton powder is 8%:92%；
The extrusion temperature is 200-280 DEG C.
The preparation method of the graphene PP cotton composite filter elements is same as Example 1.
Comparative example 1
This comparative example provides a kind of PP cotton filter element, identical with the structure of embodiment 1, the difference is that only：Institute
Tight structure layer, the open structure layer stated are standby only with PP cottons.
Comparative example 2
This comparative example provides a kind of compound cotton filter core of graphene PP cottons, essentially identical with the structure of embodiment 1, difference
Place is only that：The outer surface of the composite filter element is without helical form raised structures.
Comparative example 3
This comparative example provides a kind of graphene PP cotton composite filter elements, difference essentially identical with the structure of embodiment 1
It is only that：The inner surface of the composite filter element, outer surface are plane without curved-surface structure.
Comparative example 4
This comparative example provides a kind of graphene PP cotton composite filter elements, and identical as the structure of embodiment 1, difference only exists
In：The preparation method for the graphene PP cotton composite materials that the composite filter element uses is as follows：
A, graphene oxide dispersion in graphene oxide ultrasonic disperse to water, will be obtained, then drying and crushing, must aoxidized
Graphene powder；
B, graphene oxide powder is mixed with PP cotton powder, while antioxidant, nucleating agent, cooling auxiliary agent, system is added
Mixture is extruded, drawing-off, surface air-dry, after pelletizing to obtain the final product.
In step B, the temperature of the high-speed stirred is 50-95 DEG C, speed of agitator 200r/min-350r/min, stirring
Time is 1-3h.
In step C, the grain size of the graphene oxide powder is 5um, and the grain size of PP cottons is 20 μm；Graphene oxide powder
Mixed proportion with PP cotton powder is 2%:98%；
The extrusion temperature is 200-280 DEG C.
Compliance test result：
Graphene modified activated carbon composite filter element made from above example is filtered raw water, filter result such as table
Shown in 1.
Table 1
| Removal of impurity | Colloid removal rate | Removal efficiency | Degerming rate | Service life | |
| Embodiment 1 | 65% | 60% | 50% | 96.6% | 4.0 |
| Embodiment 2 | 60% | 55% | 56% | 96.7% | 5.0 |
| Embodiment 3 | 75% | 60% | 65% | 96.8% | 6.0 |
| Comparative example 1 | 50% | 40% | 48% | 90% | 3.5 |
| Comparative example 2 | 55% | 45% | 52% | 91% | 4.2 |
| Comparative example 3 | 55% | 48% | 50% | 85% | 4.0 |
| Comparative example 4 | 60% | 50% | 45% | 92% | 4.5 |
There are many concrete application approach of the present invention, the above is only a preferred embodiment of the present invention.More than it should be pointed out that
Embodiment is merely to illustrate the present invention, and the protection domain being not intended to restrict the invention.For the common skill of the art
For art personnel, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as this hair
Bright protection domain.
Claims (10)
1. a kind of graphene PP cotton composite filter elements, which is characterized in that the composite filter element be hollow cylindrical structure, from inside to outside according to
It is secondary to be arranged alternately tight structure layer, open structure layer；It is multiple that the tight structure layer, open structure layer are all made of graphene PP cottons
It is prepared by condensation material.
2. graphene PP cotton composite filter elements according to claim 1, which is characterized in that the tight structure layer, loose knot
The thickness of structure layer is respectively 1-3 μm, 8-10 μm；The thickness of the composite filter element is 1.5cm-2cm.
3. graphene PP cotton composite filter elements according to claim 1, which is characterized in that the density of the tight structure layer is
0.3g/cm3-0.35g/cm3, the density of the open structure layer is 0.15g/cm3-0.20g/cm3。
4. graphene PP cotton composite filter elements according to claim 1, which is characterized in that the outer surface of the composite filter element
More helical form raised structures are arranged in parallel, the short transverse that the raised structures prolong composite filter element extends；
Spacing between the raised structures is 0.5-1cm.
5. graphene PP cotton composite filter elements according to claim 1, which is characterized in that the inner surface of the composite filter element and
Outer surface is curved surface, and curved surface direction is consistent；
Each tight structure layer, open structure layer are latticed, and the grid position of each tight structure layer, open structure layer
It is not overlapped.
6. graphene PP cotton composite filter elements according to claim 1, which is characterized in that the graphene PP cotton composite materials
Preparation method it is as follows：
A, by graphene oxide ultrasonic disperse to water, graphene oxide dispersion is obtained；
B, organically-modified monomer is added into graphene dispersing solution, graft modification graphene oxide is made after high-speed stirred reaction,
Drying and crushing obtains graft modification graphene oxide powder；
C, graft modification graphene oxide powder is mixed with PP cotton powder, at the same be added binder, antioxidant, nucleating agent,
Cool down auxiliary agent, mixture obtained is extruded, drawing-off, surface air-dry, after pelletizing to obtain the final product.
7. graphene PP cotton composite filter elements according to claim 6, which is characterized in that in step B, the organically-modified list
Body is lauryl sodium sulfate；The temperature of the high-speed stirred is 50-95 DEG C, speed of agitator 200-350r/min, when stirring
Between be 1-3h.
8. graphene PP cotton composite filter elements according to claim 6, which is characterized in that in step C, the graft modification oxygen
The grain size of graphite alkene powder is 5-10um, and the grain size of PP cottons is 20-200 μm；Graft modification graphene oxide powder and PP cottons
The mixed proportion of powder is 2%-8%:92%-98%；
The extrusion temperature is 200-280 DEG C.
9. a kind of preparation method of graphene PP cotton composite filter elements according to claim 1, which is characterized in that including following
Step：
A, graphene PP cotton composite materials are subjected to melting mixing；
B, the graphene PP cotton composite materials after melting mixing are packed into spinneret machine and carry out spinneret；When first time spinneret, in filter core
Cylinder is according to given pace autobiography, while filter core inner cylinder moves from left to right so that helical form is presented on filter core inner cylinder in spinneret；
C, continuing second of spinneret, while filter core inner cylinder moves from right to left so that helical form is presented on filter core inner cylinder in spinneret,
And there are crosspoints with the spinneret of first time；
D, repeat the above steps B and C, until the outside of spinneret whole covering filter core inner cylinder, obtains the tight structure of first layer
Layer；
E, step B-D is repeated, the open structure layer of first layer is made on the tight structure layer of first layer；Then step is repeated
The tight structure layer and open structure layer of obtained multilayer are to get the graphene PP cotton composite filter elements successively；
Described when preparing tight structure layer, the melt-blown rate used is 1.5*10-7L/min-2*10-7L/min, when weaker zone, are meltblown
Rate is 1.0*10-7L/min-1.2*10-7L/min。
10. a kind of application of graphene PP cotton composite filter elements according to claim 1 in purifier.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569097A (en) * | 2018-12-10 | 2019-04-05 | 南通强生石墨烯科技有限公司 | A kind of sandwich compound PP cotton filter element of graphene and preparation method thereof |
| CN111530303A (en) * | 2020-04-15 | 2020-08-14 | 南通强生石墨烯科技有限公司 | Preparation method of graphene composite PP filtering membrane |
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Application publication date: 20180928 |