CN108357042A - A kind of preparation method of polymer composite surface micro-nano structure - Google Patents
A kind of preparation method of polymer composite surface micro-nano structure Download PDFInfo
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- CN108357042A CN108357042A CN201810132710.8A CN201810132710A CN108357042A CN 108357042 A CN108357042 A CN 108357042A CN 201810132710 A CN201810132710 A CN 201810132710A CN 108357042 A CN108357042 A CN 108357042A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The present invention provides a kind of preparation methods of polymer composite surface micro-nano structure, include the following steps：A) polypropylene, graphene powder, lubricant and coupling agent are subjected to melt blending, polymer composite is obtained after extrusion；B) polymer composite that step a) is obtained is molded in the molding device that side tablet is fixed with micro-nano template, polymer composite surface micro-nano structure is obtained after demoulding.Compared with prior art, preparation method provided by the invention is obtained by the way that the raw material of specific components is carried out melt blending with the polymer composite compared with low-surface-energy, to reduce its frictional force between micro-nano template, ensure that micro-nano structure is excellent in knockout course, realizes easy mold release；Also, the micro-nano structure that the preparation method obtains and the geometric dimension goodness of fit of micro-nano template are high, have higher geometric dimension stability, wearability and service life, can be molded the super-hydrophobic micro-nano structure of high-aspect-ratio.
Description
Technical field
The present invention relates to super hydrophobic surface technical fields, are to be related to a kind of polymer composite surface more specifically
The preparation method of micro-nano structure.
Background technology
Super hydrophobic surface refers to being more than 150 ° and surface of the roll angle less than 10 ° with the contact angle of water, micro-fluidic, certainly clear
The fields such as clean, anti-icing, antifog have broad application prospects.Currently, the method for preparing super hydrophobic surface mainly has electrochemical process, erosion
Lithography, photoetching process, sol-gel method and template etc.；Wherein, template has easy to operate, at low cost and environmental-friendly etc.
Advantage can be used for high-volume large area and prepare micro-nano structure surface.However, when preparing the micro-nano structure of high-aspect-ratio, demoulding
The fracture and breakage of micro-nano structure easily occur for process.
For the problem that micro-nano structure demoulding on super hydrophobic surface is difficult, presently preferred ejection technique is few, the prior art
It is typically employed in micro-nano mold cavity surface and coats one layer of carbon fluoride film, though it can reduce between high molecular material and microlaser cavity surface
Bonding force, but coating easily causes the blocking of micro-nano cavity so that molding micro-nano structure size generates deviation, print effect compared with
Difference, it is difficult to obtain the micro-nano structure of accurate high-aspect-ratio.And Publication No. CN102205639A Chinese patents disclose one kind
Polymer squeezes out micro-embossing forming method, using roll-to-roll method for stamping, although solving release problems to a certain extent,
The depth-to-width ratio of molding micro-nano structure is relatively low, it is difficult to obtain the micro-nano structure with high-aspect-ratio.
Invention content
In view of this, the purpose of the present invention is to provide a kind of preparation sides of polymer composite surface micro-nano structure
Method, preparation method easy mold release provided by the invention and the super-hydrophobic micro-nano structure that high-aspect-ratio can be molded.
The present invention provides a kind of preparation methods of polymer composite surface micro-nano structure, include the following steps：
A) polypropylene, graphene powder, lubricant and coupling agent are subjected to melt blending, it is compound to obtain macromolecule after extrusion
Material；
B) by polymer composite that step a) is obtained in the molding device that side tablet is fixed with micro-nano template into
Row molding, obtains polymer composite surface micro-nano structure after demoulding.
Preferably, polypropylene described in step a) is selected from isotactic polypropylene and/or syndiotactic polypropylene.
Preferably, the number of plies of graphene powder described in step a) is 1 layer~5 layers, and single layer rate is more than or equal to 70%, piece diameter
It it is 5 μm~15 μm, radius-thickness ratio is 5000~10000.
Preferably, the mass ratio of polypropylene, graphene powder and lubricant described in step a) is 100：(2~16)：
(0.5~1.5)；
The mass ratio of the coupling agent and graphene powder is (2~4)：100.
Preferably, melt blending described in step a) is carried out by double screw extruder；The extrusion temperature of the melt blending
Degree is 160 DEG C~215 DEG C, and screw speed is 100r/min~300r/min.
Preferably, the step a) further includes：
It after obtained polymer composite is cooled to room temperature, is granulated, obtains graininess polymer composite.
Preferably, micro-nano template described in step b) is the metallic sieve template of the mesh of 300 mesh~3000.
Preferably, molding temperature described in step b) is 180 DEG C~200 DEG C, and the time is 5min~20min.
Preferably, molding device other side tablet described in step b) is fixed with porous plate；The porous plate is equipped with diameter
For 1mm~15mm through-hole array, thickness is 0.5mm~2.5mm.
Preferably, the process demoulded described in step b) is specially：
It after polymer composite after molding is cooled down, is first detached with micro-nano template, then passes through stripper plate and described more
Orifice plate detaches, and obtains polymer composite surface micro-nano structure.
The present invention provides a kind of preparation methods of polymer composite surface micro-nano structure, include the following steps：a)
Polypropylene, graphene powder, lubricant and coupling agent are subjected to melt blending, polymer composite is obtained after extrusion；B) will
The polymer composite that step a) is obtained is molded in the molding device that side tablet is fixed with micro-nano template, after demoulding
Obtain polymer composite surface micro-nano structure.Compared with prior art, preparation method provided by the invention is by will be specific
The raw material of component carries out melt blending, obtains with the polymer composite compared with low-surface-energy, to reduce itself and micro-nano mould
Frictional force between plate ensures that micro-nano structure is excellent in knockout course, realizes easy mold release；Also, the preparation method obtains
Micro-nano structure and micro-nano template the geometric dimension goodness of fit it is high, there is higher geometric dimension stability, wearability and use
Service life can be molded the super-hydrophobic micro-nano structure of high-aspect-ratio.
In addition, preparation method provided by the invention is easy to operate, at low cost and environmental-friendly.
Description of the drawings
Fig. 1 is molding and knockout course in the preparation method of polymer composite surface micro-nano structure provided by the invention
Schematic diagram；
Fig. 2 is the electron scanning micrograph of the metallic sieve template used in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram (side view and vertical view) of the porous plate used in the embodiment of the present invention；
Fig. 4 is the polymer composite surface micro-nano structure that the preparation method that the embodiment of the present invention 1 provides is prepared
Electron scanning micrograph；
Fig. 5 is the polymer composite surface micro-nano structure that the preparation method that the embodiment of the present invention 1 provides is prepared
Wetting state photo；
Fig. 6 is the scanning electricity for the virgin pp material surface micro-nano structure that the preparation method that comparative example 1 provides is prepared
Sub- microscope photo；
Fig. 7 is the scanning for the polymer composite surface micro-nano structure that the preparation method that comparative example 2 provides is prepared
Electron micrograph；
Fig. 8 is the scanning for the polymer composite surface micro-nano structure that the preparation method that comparative example 3 provides is prepared
Electron micrograph.
Specific implementation mode
Below in conjunction with the embodiment of the present invention, technical scheme of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
The present invention provides a kind of preparation methods of polymer composite surface micro-nano structure, include the following steps：
A) polypropylene, graphene powder, lubricant and coupling agent are subjected to melt blending, it is compound to obtain macromolecule after extrusion
Material；
B) by polymer composite that step a) is obtained in the molding device that side tablet is fixed with micro-nano template into
Row molding, obtains polymer composite surface micro-nano structure after demoulding.
Polypropylene, graphene powder, lubricant and coupling agent are carried out melt blending by the present invention first, and height is obtained after extrusion
Molecular composite material.In the present invention, the polypropylene is preferably selected from isotactic polypropylene and/or syndiotactic polypropylene, more preferably
Isotactic polypropylene.The present invention is not particularly limited the polyacrylic source, using well known to those skilled in the art above-mentioned
The commercial goods of isotactic polypropylene and syndiotactic polypropylene.
In the present invention, the number of plies of the graphene powder is preferably 1 layer~5 layers, more preferably 1 layer~3 layers；The stone
The single layer rate of black alkene powder is preferably greater than or equal to 70%, more preferably greater than 80%；The piece diameter of the graphene powder is preferably 5 μm
~15 μm, more preferably 7 μm~12 μm；The radius-thickness ratio of the graphene powder is preferably 5000~10000, and more preferably 9000
~9500.The present invention is not particularly limited the source of the graphene powder, using well known to those skilled in the art commercially available
Commodity.
In the present invention, the lubricant is preferably selected from polypropylene wax and/or low-molecular-weight polypropylene, and more preferably poly- third
Alkene wax.The present invention is not particularly limited the source of the lubricant, using above-mentioned polypropylene well known to those skilled in the art
The commercial goods of wax and low-molecular-weight polypropylene.
In the present invention, the mass ratio of the polypropylene, graphene powder and lubricant is preferably 100：(2~16)：
(0.5~1.5), more preferably 100：(3~15)：1.
In the present invention, the coupling agent is preferably selected from silane coupling agent and/or titanate coupling agent, more preferably silane
Coupling agent.The present invention is not particularly limited the source of the coupling agent, using above-mentioned silane well known to those skilled in the art
The commercial goods of coupling agent and titanate coupling agent.
In the present invention, the mass ratio of the coupling agent and graphene powder is preferably (2~4)：100, more preferably 3：
100。
In the present invention, the melt blending is preferably carried out by double screw extruder.In the present invention, the melting is total
Mixed extrusion temperature is preferably 160 DEG C~215 DEG C；In the preferred embodiment of the invention, melted using double screw extruder
Melt blending；Extrusion temperature：- eight areas of-seven areas of-six area of-five areas of-four area of-three areas of-two area of one area-head temperature is respectively 160 DEG C-
175℃-185℃-195℃-200℃-205℃-210℃-215℃-210℃.In the present invention, the screw rod of the melt blending
Rotating speed is preferably 100r/min~300r/min, more preferably 200r/min.
It is compound that the present invention by the melt blending by the raw material of specific components under given conditions, after extrusion obtains macromolecule
Material.After obtaining polymer composite, the present invention preferably further includes：
It after obtained polymer composite is cooled to room temperature, is granulated, obtains graininess polymer composite.
In the present invention, the equipment of the granulation is preferably comminutor；It is not specifically limited to this by the present invention.In the present invention, described
The diameter of graininess polymer composite is preferably 0.5mm~1.5mm, more preferably；The graininess macromolecule composite wood
The highly preferred of material is 2mm~4mm, more preferably 3mm.The polymer composite is granulated by the present invention, is conducive to
The progress of subsequent forming process.
After obtaining the polymer composite, obtained polymer composite is fixed with by the present invention in side tablet
It is molded in the molding device of micro-nano template, polymer composite surface micro-nano structure is obtained after demoulding.In the present invention,
The micro-nano template is micron with lateral dimension or nanoscale, longitudinal depth are micron or nano level micro-nano feature；It is described
Micro-nano template is preferably the metallic sieve template of the mesh of 300 mesh~3000, the metallic sieve template of more preferably 500 mesh.In this hair
In bright preferred embodiment, the micro-nano template is 500 mesh stainless steel cloths, and the length of side is about 40 μm of square hole, and pitch of holes is about
20μm。
In the present invention, the molding temperature is preferably 180 DEG C~200 DEG C, more preferably 190 DEG C；It is described molding
Time is preferably 5min~20min, more preferably 15min.The molding that the present invention is fixed with micro-nano template by side tablet fills
It sets and is molded, molded after the polymer composite is tiled, heat upper and lower tablet to forming temperature, make high score
Sub- composite material is in the high-temperature fusant of viscous state, and hot pressing after molding makes high-temperature fusant fill the micro-nano cavity in micro-nano template,
Complete forming process.
In the present invention, molding device other side tablet is fixed with porous plate；The porous plate is preferably provided with diameter
For 1mm~15mm through-hole array, more preferably a diameter of 5mm~10mm through-hole array；The thickness of the porous plate is preferably
0.5mm~2.5mm, more preferably 1mm~2mm.The side tablet of the molding device is fixed micro-nano template by the present invention, another
Side tablet fixes the porous plate, and the two is opposite, makes in clamping process, and high-temperature fusant fills porous plate and micro-nano template simultaneously
Cavity, after cooling and shaping, since effective contact area in polymer composite and porous plate cavity is much larger than and micro-nano mould
Effective contact area of microlaser cavity in plate, therefore, die sinking process be fixed on cavity in porous plate and polymer composite it
Between frictional force be more than and be fixed on the micro-nano cavity in micro-nano template and the frictional force between polymer composite, realize micro-nano
The smooth demoulding of structure.
In the present invention, the process of the demoulding is preferably specially：
It after polymer composite after molding is cooled down, is first detached with micro-nano template, then passes through stripper plate and described more
Orifice plate detaches, and obtains polymer composite surface micro-nano structure.In the present invention, the temperature of the cooling be preferably 20 DEG C~
30 DEG C, more preferably 25 DEG C.
In the present invention, the stripper plate is preferably equipped with flat with the column array of the mutual clearance fit of above-mentioned porous plate
Plate；The thickness of the stripper plate is preferably 400mm~600mm, more preferably 500mm.
Referring to Fig. 1, Fig. 1 be polymer composite surface micro-nano structure provided by the invention preparation method in be molded
With knockout course schematic diagram；Wherein, 1 be molding device upper flat plate, 2 be porous plate, and 3 be micro-nano template, and 4 is compound for macromolecule
Material, 5 be the lower tablet of molding device, and 6 be stripper plate.
The present invention provides a kind of preparation methods of polymer composite surface micro-nano structure, include the following steps：a)
Polypropylene, graphene powder, lubricant and coupling agent are subjected to melt blending, polymer composite is obtained after extrusion；B) will
The polymer composite that step a) is obtained is molded in the molding device that side tablet is fixed with micro-nano template, after demoulding
Obtain polymer composite surface micro-nano structure.Compared with prior art, preparation method provided by the invention is by will be specific
The raw material of component carries out melt blending, obtains with the polymer composite compared with low-surface-energy, to reduce itself and micro-nano mould
Frictional force between plate ensures that micro-nano structure is excellent in knockout course, realizes easy mold release；Also, the preparation method obtains
Micro-nano structure and micro-nano template the geometric dimension goodness of fit it is high, there is higher geometric dimension stability, wearability and use
Service life can be molded the super-hydrophobic micro-nano structure of high-aspect-ratio.
In addition, preparation method provided by the invention is easy to operate, at low cost and environmental-friendly.
In order to further illustrate the present invention, it is described in detail below by following embodiment.Following embodiment of the present invention
Graphene powder used is provided by Xiamen Kai Na graphene technical concerns Co., Ltd, graphene number of plies：1-3 layers, single layer rate
More than 80%, piece diameter：7~12 μm, radius-thickness ratio：Average 9500；Micro-nano template used is 500 mesh stainless steel cloths, and the length of side is about
For 40 μm of square hole, pitch of holes is about 20 μm, as shown in Figure 2；Porous plate used is equipped with a diameter of 5-10mm through-hole array, thick
Degree is 1-2mm, as shown in Figure 3；Demoulding version used is the tablet equipped with the column array with the mutual clearance fit of above-mentioned porous plate,
Thickness is 500mm.
Embodiment 1
(1) by the graphene powder of isotactic polypropylene and 3wt%, the polypropylene wax of 1wt% and above-mentioned graphene powder
The silane coupling agent of quality 3% carries out melt blending by double screw extruder；Extrusion temperature：- four area of-three area of-two area of one area-
- eight areas of-seven areas of-six area of 5th areas-head temperature is respectively 160 DEG C -175 DEG C -185 DEG C -195 DEG C -200 DEG C -205 DEG C -210 DEG C -
215 DEG C -210 DEG C, screw speed：200r/min；Obtain polymer composite；After it is cooled to room temperature, through being granulated machine-cut
For the graininess polymer composite that diameter is about 1mm, height is about 3mm.
(2) micro-nano template is fixed on the upper flat plate surface of molding device, lower planar surface fixes porous plate；By step (1)
Obtained graininess polymer composite is laid on above-mentioned porous plate and is molded, and heats upper and lower tablet to 190 DEG C, makes
Polymer composite is in the high-temperature fusant of viscous state, after molding at 190 DEG C hot pressing 15min, make high-temperature fusant filling it is micro-
The micro-nano cavity received in template；It after being cooled to room temperature, is molded, makes the micro-nano template for being fixed on upper flat plate surface and macromolecule
Composite material detaches, and realizes the demoulding of micro-nano structure, then the porous plate for being stained with polymer composite is positioned over stripper plate
On, realize the demoulding of polymer composite to get to polymer composite surface micro-nano structure after pushing.
After testing, the polymer composite surface micro-nano knot that the preparation method that the embodiment of the present invention 1 provides is prepared
The electron scanning micrograph of structure is as shown in Figure 4；As seen from Figure 4, preparation method provided by the invention is prepared
Polymer composite surface micro-nano structure is excellent, and micro-nano structure and the geometric dimension goodness of fit of micro-nano template are high, have
Higher geometric dimension stability, and there is high-aspect-ratio.
By full-automatic video microscopic contact angle measuring instrument, using sessile drop method test surfaces static contact angle, test droplets
Volume is 10 μ L.Test result is shown in Figure 5, and Fig. 5 is the high score that the preparation method that the embodiment of the present invention 1 provides is prepared
The wetting state photo of sub- composite material surface micro-nano structure；After testing, the preparation method that the embodiment of the present invention 1 provides is prepared into
The surface static contact angle of the polymer composite surface micro-nano structure arrived is 150 °, is in super-hydrophobic state.The prior art
The general droplet size using 4 μ L is tested, and ultra-hydrophobicity is characterized, but since gravity is small, the drop of 4 μ of μ L~9 L without
Method adheres to micro-nano structure provided by the invention, and therefore, the drop that the present invention is used uniformly 10 μ L is tested, and obtains corresponding test
Under the conditions of ultra-hydrophobicity；It follows that the polymer composite surface that preparation method provided by the invention is prepared
The super-hydrophobic significant effect of micro-nano structure.
Comparative example 1
Micro-nano structure surface is directly prepared using the isotactic polypropylene in embodiment 1：The preparation side provided according to embodiment 1
Method fixes micro-nano template on the upper flat plate surface of molding device, and lower planar surface fixes porous plate；Isotactic polypropylene is laid in
It is molded on above-mentioned porous plate, heats upper and lower tablet to 190 DEG C, polypropylene material is made to be in the high-temperature fusant of viscous state, closed
After mould at 190 DEG C hot pressing 5min, make high-temperature fusant fill micro-nano template in micro-nano cavity；After being cooled to room temperature, opened
Mould makes the micro-nano template for being fixed on upper flat plate surface be detached with polypropylene material, realizes the demoulding of micro-nano structure, then will be stained with
The porous plate of polypropylene material is positioned on stripper plate, realizes the demoulding of polypropylene material to get to virgin pp material after pushing
Expect surface micro-nano structure.
After testing, the scanning for the virgin pp material surface micro-nano structure that the preparation method that comparative example 1 provides is prepared
Electron micrograph is as shown in Figure 6；As seen from Figure 6, due in knockout course between polypropylene material and micro-nano cavity
Frictional force it is larger, micro-nano structure can be elongated even damage.
Embodiment 2
Polymer composite surface micro-nano structure is prepared in the preparation method provided using embodiment 1, difference lies in：
The dosage of graphene powder is 6wt%.
Embodiment 3
Polymer composite surface micro-nano structure is prepared in the preparation method provided using embodiment 1, difference lies in：
The dosage of graphene powder is 9wt%.
Embodiment 4
Polymer composite surface micro-nano structure is prepared in the preparation method provided using embodiment 1, difference lies in：
The dosage of graphene powder is 12wt%.
Embodiment 5
Polymer composite surface micro-nano structure is prepared in the preparation method provided using embodiment 1, difference lies in：
The dosage of graphene powder is 15wt%.
After testing, the polymer composite surface micro-nano structure that the preparation method that embodiment 2~5 provides is prepared is equal
Excellent, micro-nano structure and the geometric dimension goodness of fit of micro-nano template are high, have higher geometric dimension stability, and have
High-aspect-ratio；Surface static contact angle is respectively 151 °, 155 °, 156 ° and 152 °, is in super-hydrophobic state.
Comparative example 2
Polymer composite surface micro-nano structure is prepared in the preparation method provided using embodiment 1, difference lies in：
The dosage of graphene powder is 0.5wt%.
Comparative example 3
Polymer composite surface micro-nano structure is prepared in the preparation method provided using embodiment 1, difference lies in：
The dosage of graphene powder is 18wt%；3000 mesh stainless steel cloth of micro-nano template.
After testing, the polymer composite surface micro-nano structure that the preparation method that comparative example 2~3 provides is prepared,
Occur micro-nano structure be elongated with graphene powder content it is too high caused by surface fracture the phenomenon that；Surface static contact angle point
Wei not be 146 ° and 148 °, the not up to super-hydrophobic state of the embodiment of the present invention 1~5.
The above description of the disclosed embodiments, enables those skilled in the art to implement or use the present invention.It is right
A variety of modifications of these embodiments will be apparent to those skilled in the art, and as defined herein one
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
It will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with the principles and novel features disclosed herein
Widest range.
Claims (10)
1. a kind of preparation method of polymer composite surface micro-nano structure, includes the following steps：
A) polypropylene, graphene powder, lubricant and coupling agent are subjected to melt blending, macromolecule composite wood is obtained after extrusion
Material；
B) by the polymer composite that step a) is obtained carried out in the molding device that side tablet is fixed with micro-nano template at
Type obtains polymer composite surface micro-nano structure after demoulding.
2. preparation method according to claim 1, which is characterized in that polypropylene described in step a) is selected from isotactic polypropylene
And/or syndiotactic polypropylene.
3. preparation method according to claim 1, which is characterized in that the number of plies of graphene powder described in step a) is 1
Layer~5 layers, single layer rate are more than or equal to 70%, and piece diameter is 5 μm~15 μm, and radius-thickness ratio is 5000~10000.
4. preparation method according to claim 1, which is characterized in that polypropylene described in step a), graphene powder and
The mass ratio of lubricant is 100：(2~16)：(0.5~1.5)；
The mass ratio of the coupling agent and graphene powder is (2~4)：100.
5. preparation method according to claim 1, which is characterized in that melt blending described in step a) is squeezed by twin-screw
Go out machine progress；The extrusion temperature of the melt blending is 160 DEG C~215 DEG C, and screw speed is 100r/min~300r/min.
6. preparation method according to claim 1, which is characterized in that the step a) further includes：
It after obtained polymer composite is cooled to room temperature, is granulated, obtains graininess polymer composite.
7. preparation method according to claim 1, which is characterized in that micro-nano template described in step b) be 300 mesh~
The metallic sieve template of 3000 mesh.
8. preparation method according to claim 1, which is characterized in that molding temperature described in step b) be 180 DEG C~
200 DEG C, the time is 5min~20min.
9. preparation method according to claim 1, which is characterized in that molding device other side tablet described in step b) is solid
Surely there is porous plate；The porous plate is equipped with a diameter of 1mm~15mm through-hole array, and thickness is 0.5mm~2.5mm.
10. preparation method according to claim 9, which is characterized in that the process demoulded described in step b) is specially：
After polymer composite after molding is cooled down, first detached with micro-nano template, then pass through stripper plate and the porous plate
Separation, obtains polymer composite surface micro-nano structure.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN115887790A (en) * | 2022-12-26 | 2023-04-04 | 广东工业大学 | Efficient antibacterial micro-nano structure composite material, preparation method and medical anti-infection material |
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