CN109881192A - A kind of bionical adherent surfaces and preparation method thereof - Google Patents
A kind of bionical adherent surfaces and preparation method thereof Download PDFInfo
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- CN109881192A CN109881192A CN201910071092.5A CN201910071092A CN109881192A CN 109881192 A CN109881192 A CN 109881192A CN 201910071092 A CN201910071092 A CN 201910071092A CN 109881192 A CN109881192 A CN 109881192A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/02—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using non-aqueous solutions
Abstract
The invention discloses a kind of bionical adherent surfaces and preparation method thereof.Super-hydrophobic micro- " mastoid process " structure of lotus leaf surface is imitated on the surface, and preparation method includes the following steps: (1) to high-speed steel print sanding and polishing, to remove surface oxide layer and guarantee flatness；(2) surface and oil contaminant is removed using organic solvent；(3) steel disc is performed etching using nanosecond laser, micro- " mastoid process " structure of formation rule arrangement；(4) oxide layer being etched to define using acidic deruster removal steel disc；(5) steel disc is placed in the mixed solution of silicon fluoride and ethyl alcohol and is reacted a period of time, obtain adherent surfaces after dry.The adherent surfaces preparation method is simple, strong operability, has excellent anti-resin adhesive capacity, can be applied to cutter, die surface and other the anti-stickiness liquid adhesive occasions etc. in carbon fiber/epoxy resin prepreg production process.
Description
Technical field
The invention belongs to bionical desorption construction applications, and in particular to a kind of bionical adherent surfaces and preparation method thereof.
Background technique
In recent years, carbon fiber prepreg composite material because its high specific strength, high specific stiffness and it is excellent thermally conductive, conductive and
The performances such as corrosion-resistant, are widely used in the multiple fields such as aerospace, sports equipment, building industry and electromagnetic shielding.
In the production process of carbon fiber/epoxy resin prepreg, prepreg is usually cut into required size and is placed into
Component with complex shape is manufactured in mold.But (at 20 DEG C, viscosity is water since epoxy resin has high viscosity
1000-50000 times) so that be chopped cutter and a large amount of epoxy resin of die surface adherency and fiber, not only cause additional energy
Loss, and seriously affect prepreg moulding process and increase later period cleaning difficulty and expense.
To can effectively solve the problem that the sticking problem in industry and life, the structure or coating of some anti-adherency are received extensively
Concern is existed if Chinese patent application CN201610531105.9 discloses a kind of manufacture craft of anti-adherency cutter using punching press
Cutter surface forms anti-sticking slot, efficiently solves the sticking problem of knife face during cutting the dish, but this stamped groove can not be solved effectively
The certainly sticking problem of high viscosity resins.Chinese patent CN201610520973.7 discloses a kind of place for preventing cylinder surface from adhering to
Reason method can be effectively reduced the impurity adherency on surface, prevent roller rotten by spraying teflon coatings in cylinder surface
Erosion improves service efficiency and has saved maintenance cost, but existing strength of coating is low, caducous problem, so that coating is answered
With with limitation.For the sticking problem of resin in carbon fiber prepreg forming process, also lack a kind of effective at present
Solution.The desorption of cutter and die surface, high intensity and the performances such as corrosion-resistant of being chopped become prepreg and are processed into
Critical problem urgently to be resolved in type technique.
Summary of the invention
To solve the shortcomings and deficiencies of the prior art, the present invention provides a kind of bionical adherent surfaces and its preparation side
Method enables chopped cutter and die surface effectively to mitigate or reduce the adhesive capacity of resin and fiber, and can be suitable for
Other prevent the application of high viscosity liquid adhesion.
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of bionical adherent surfaces are imitation pair with the lotus leaf in nature with " mastoid process " shape micro-structure ultraphobic surface
As micro/nano level " mastoid process " shape structure being processed in steel surface, and reduce steel surface energy using chemical method modification, so that steel
Surface has resin desorption performance.
The bionical adherent surfaces, preparation method includes the following steps:
Steel are sliced by step 1, then carry out sanding and polishing, obtain crude green body one；
The crude green body one is successively carried out ultrasonic cleaning with deionized water, acetone and dehydrated alcohol by step 2, after dry
Obtain crude green body two；
Step 3 processes crude green body two using nanosecond laser, the ginseng such as adjustment laser power, sweep speed, scanning speed
Number, and laser spot is placed in two surface of crude green body, obtain crude green body three；
Step 4 immerses the crude green body three in acidic deruster, and scrubs finished surface with plastic bruss, then successively uses
Deionized water, dehydrated alcohol carry out ultrasonic cleaning, obtain crude green body four；
The crude green body four is immersed silicon fluoride (C by step 513H13F17O3Si one) and in the mixed solution of dehydrated alcohol is reacted
The section time is dried to obtain finished product then through washes of absolute alcohol.
Preferably, in step 1, steel type W18Cr4V.
Preferably, steel described in step 1 will be first cut into the rectangular print of 40 × 40mm, then print is successively used
300#, 500#, 800#, 1200#, 2000# sand paper carry out sanding and polishing.
Preferably, Step 2: drying described in five is carried out in vacuum or nitrogen atmosphere.
Preferably, " mastoid process " shape structure is processed 100-500 μm of diameter, 100-500 μm of spacing of processing, is swashed in step 3
Optical scanning rate is 100-800mm/s.
Preferably, " mastoid process " shape structure processes 100 μm of diameter in step 3.
Preferably, " mastoid process " shape structure processes 100 μm of spacing in step 3.
Preferably, in step 3, laser scan rate 100mm/s.
Most preferably, 100 μm of diameter of " mastoid process " shape structure processing, processing 100 μm of spacing, laser scan rate in step 3
For 100mm/s.
Preferably, crude green body three immerses the time of acidic deruster for 4~6min in step 4.
Preferably, the volume ratio for impregnating silicon fluoride and dehydrated alcohol used in step 5 is 1:10.
Preferably, the time reacted in the immersion of crude green body four mixed solution in step 5 is 2.5~3h.
Preferably, the temperature of sample drying is 70~80 DEG C in step 5, the dry time is 20~30min；Into
The preferred drying temperature of one step is 80 DEG C, drying time 30min.
A kind of bionical adherent surfaces as made from above-described preparation method.
The present invention by adopting the above technical scheme, has the following beneficial effects:
Selection of the present invention is tungsten system high speed steel W18Cr4V, which has high rigidity, high-wearing feature and red hardness；It is described
In step 1, sanding and polishing is carried out to steel surface using different sand paper, surface oxide layer is removed and steel surface is had
Certain flatness guarantees that the structure size of laser processing and spacing are uniform；It is described Step 2: in five, in vacuum or nitrogen atmosphere
Enclose middle drying steel, avoid during heating steel surface there is oxide layer, influence final product quality；In the step 3, benefit
Steel surface is performed etching with nanosecond laser, it is smaller to the heat affecting of working position adjacent material, and partial melting metal
Grain is attached in " mastoid process ", forms micro-nano hierarchical structure, is that Cassie model is easier to repel stickiness liquid from Wenzel model conversation
Body；In the step 4, finished surface high temperature oxide layer is removed using acidic deruster, the reaction time is 4~6min, avoids growing
" mastoid process " structure is corroded in time response；In the step 5, silicon fluoride (C13H13F17O3Si silylation hydrolysis) generates silicon hydroxyl
Base, and metal surface has hydrophily, dehydration occurs for silicone hydroxyl and steel disc surface hydroxyl, so that silicon fluoride molecule is with covalent
The form of key is connected on steel disc surface, reduces the surface energy of steel, finished product is enabled to effectively prevent the stickiness liquid such as resin
The attachment of body.Adherent surfaces preparation method of the invention is simple, strong operability, has excellent anti-resin adhesive capacity, can
Applied to cutter, die surface and other anti-stickiness liquid adhesive occasions in carbon fiber/epoxy resin prepreg production process
Deng.
Detailed description of the invention
Fig. 1 is silicon fluoride and micro-nano " mastoid process " structural steel surface covalent bond connection schematic diagram.
Fig. 2 is the surface of high speed steel micro-structure scanning electron microscope (SEM) photograph that desorption effect obtained is optimal in the embodiment of the present invention 3.
Fig. 3 is the super depth-of-field microscope of surface of high speed steel micro-structure that desorption effect obtained is optimal in the embodiment of the present invention 3
Figure.
Fig. 4 is 4 μ l epoxy resin drop of the volume optimal surface of high speed steel state of desorption effect obtained in embodiment 3
Figure.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, and embodiments of the present invention are not limited thereto.
Silicon fluoride and micro-nano " mastoid process " structural steel surface covalent bond connection schematic diagram in the bionical adherent surfaces of the present invention
As shown in Figure 1, wherein 1 is silicon fluoride molecule nonpolar hydrophobic long-chain；2 be high-speed steel-base bottom；3 is micro-nano for surface of high speed steel
" mastoid process " shape structure；4 be covalent bond of the silicon fluoride in conjunction with surface of high speed steel.
Embodiment 1
A kind of bionical adherent surfaces, specific step is as follows for preparation process:
Step 1 selects tungsten system high speed steel W18Cr4V, steel is cut into the rectangular print of 40 × 40mm, then successively by print
Sanding and polishing is carried out with 300#, 500#, 800#, 1200#, 2000# sand paper, remove steel surface oxide layer and guarantees that surface has
Certain flatness obtains crude green body one；
The crude green body one is successively carried out ultrasonic cleaning with deionized water, acetone and dehydrated alcohol by step 2, removes steel
Material surface impurity and greasy dirt, and crude green body two is obtained after being dried in vacuo；
For step 3 using " mastoid process " structure of nanosecond laser processing different-diameter, diameter is respectively 100 μm, 200 μm, 300 μ
M, 400 μm, 500 μm, spacing are 100 μm, laser scan rate 200mm/s, obtain crude green body three.
Crude green body three is immersed acidic deruster 5min by step 4, and scrubs finished surface with plastic bruss, removes finished surface
Then high temperature oxide layer successively carries out ultrasonic cleaning with deionized water, dehydrated alcohol, obtains crude green body four；
Crude green body four is immersed silicon fluoride (C by step 513H13F17O3Si 3h) and in the mixed solution of dehydrated alcohol, then exists
It is dried in vacuo 30min under the conditions of 80 DEG C, obtains final sample.
In this embodiment, the contact angle of water and resin has been carried out to final sample, roll angle is tested, water and resin liquid drop
Volume is 4 μ l.Test result is that " mastoid process " diameter is 100 μm, and spacing is 100 μm, and laser scan rate is the sample of 200mm/s
The effect of exclusion water and resin is optimal, and water contact angle and roll angle are respectively 155.3 ° and 3.3 °, resin contact angle and
Roll angle is respectively 147.1 ° and 10.4 °.Therefore " mastoid process " diameter prepared in the present embodiment is 100 μm, and spacing is 100 μm,
The sample surfaces that laser scan rate is 200mm/s have preferable anti-resin adhesiving effect.
Embodiment 2
With embodiment 1 the difference lies in that in step 3, laser processing " mastoid process " diameter of movement is 100 μm, spacing difference
For 100 μm, 200 μm, 300 μm, 400 μm, 500 μm, sweep speed 200mm/s.
In this embodiment, the contact angle of water and resin has been carried out to final sample, roll angle is tested, water and resin liquid drop
Volume is 4 μ l.Test result is that " mastoid process " diameter is 100 μm, and spacing is 100 μm, and laser scan rate is the sample of 200mm/s
The effect of exclusion water and resin is optimal, and water contact angle and roll angle are respectively 155.3 ° and 3.3 °, resin contact angle and
Roll angle is respectively 147.5 ° and 9.4 °.Therefore " mastoid process " diameter prepared in the present embodiment is 100 μm, and spacing is 100 μm, is swashed
The sample surfaces that optical scanning rate is 200mm/s have preferable anti-resin adhesiving effect.
Embodiment 3
With above-described embodiment 1 the difference lies in that in step 3, laser processing " mastoid process " diameter of movement is 100 μm, spacing
Respectively 100 μm, sweep speed 800mm/s, 400mm/s, 300mm/s, 200mm/s, 100mm/s.
In this embodiment, the contact angle of water and resin has been carried out to final sample, roll angle is tested, water and resin liquid drop
Volume is 4 μ l.Test result is that " mastoid process " diameter is 100 μm, and spacing is 100 μm, and laser scan rate is the sample of 100mm/s
The effect of exclusion water and resin is optimal, and water contact angle and roll angle are respectively 157.2 ° and 2.8 °, resin contact angle and
Roll angle is respectively 149.7 ° and 7.3 °.Therefore bionical raised structures steel surface manufactured in the present embodiment has preferable anti-resin
Adhesiving effect.And compared with the optimal sample surfaces in embodiment 1,2, the test effect of the sample is more preferable.Fig. 2 is that " mastoid process " is straight
Diameter is 100 μm, and spacing is 100 μm, and laser scan rate is the sample surfaces scanning electron microscope image of 100mm/s；Fig. 3 is the sample
The super depth-of-field microscope image of surface micro-structure；Fig. 4 is 4 μ l epoxy resin drop of volume in the sample surfaces state diagram.
Comparative example 1
One kind not constructing bionical " mastoid process " body structure surface, and specific step is as follows for preparation process:
Step 1 selects tungsten system high speed steel W18Cr4V, steel is cut into the rectangular print of 40 × 40mm, then successively by print
Sanding and polishing is carried out with 300#, 500#, 800#, 1200#, 2000# sand paper, remove steel surface oxide layer and guarantees that surface has
Certain flatness obtains crude green body one；
The crude green body one is successively carried out ultrasonic cleaning with deionized water, acetone and dehydrated alcohol by step 2, removes steel
Material surface impurity and greasy dirt, and final sample is obtained after being dried in vacuo.
In this comparative example, the contact angle of sample surfaces water and resin is respectively 84.1 ° and 59.6 °, and sample is put in 90 °
Set, the sample surfaces that water and resin still adhere to, it is seen that the comparative example preparation its anti-resin adhesive capacity of smooth surface much worse than
Embodiment 1,2,3, the present invention in bionical " mastoid process " structure and silicon fluoride (C13H13F17O3Si) combination processing makes steel surface
Non-stick nature can obtain very big promotion.
Comparative example 2
One kind not constructing bionical " mastoid process " body structure surface, and specific step is as follows for preparation process:
Step 1 selects tungsten system high speed steel W18Cr4V, steel is cut into the rectangular print of 40 × 40mm, then successively by print
Sanding and polishing is carried out with 300#, 500#, 800#, 1200#, 2000# sand paper, remove steel surface oxide layer and guarantees that surface has
Certain flatness obtains crude green body one；
The crude green body one is successively carried out ultrasonic cleaning with deionized water, acetone and dehydrated alcohol by step 2, removes steel
Material surface impurity and greasy dirt obtain crude green body two；
Crude green body two is immersed silicon fluoride (C by step 313H13F17O3Si 3h) and in the mixed solution of dehydrated alcohol, then exists
It is dried in vacuo 30min under the conditions of 80 DEG C, obtains final sample.
In this comparative example, it is in 90 ° by sample that the contact angle of sample surfaces water and resin, which is respectively 107.7 ° and 79.6 °,
It places, the sample surfaces that water and resin still adhere to, it is seen that its anti-resin adhesive capacity of the smooth surface of comparative example preparation is far poor
Bionical " mastoid process " structure and silicon fluoride (C in embodiment 1,2,3, the present invention13H13F17O3Si) combination processing makes steel surface
Non-stick nature can obtain very big promotion.
Table 1 summarizes the important parameter and technical effect of Examples 1 to 3 and comparative example 1,2.
Table 1
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention etc.
Form should be equivalent substitute mode, should all be included within the protection scope of claim of the present invention.
Claims (10)
1. a kind of preparation method of bionical adherent surfaces, which comprises the steps of:
Step 1: steel are sliced, sanding and polishing is then carried out, obtains crude green body one；
Step 2: the crude green body one is successively carried out ultrasonic cleaning with deionized water, acetone and dehydrated alcohol, obtained after dry
Crude green body two；
Step 3: processing micro- " mastoid process " shape structure on two surface of crude green body using nanosecond laser, crude green body three is obtained；
Step 4: by the crude green body three immerse acidic deruster in, and with plastic bruss scrub finished surface, then successively spend from
Sub- water, dehydrated alcohol carry out ultrasonic cleaning, obtain crude green body four；
Step 5: by being reacted in the mixed solution of the crude green body four immersion silicon fluoride and dehydrated alcohol, it is then clear through dehydrated alcohol
It washes, is finally dried to obtain finished product.
2. preparation method according to claim 1, which is characterized in that steel described in step 1 will be first cut into 40 ×
The rectangular print of 40mm, then print is successively subjected to sanding and polishing with 300#, 500#, 800#, 1200#, 2000# sand paper.
3. preparation method according to claim 1, which is characterized in that Step 2: drying described in five is in vacuum or nitrogen
Atmosphere encloses middle progress.
4. preparation method according to claim 1, which is characterized in that " mastoid process " shape structure processes diameter 100- in step 3
500 μm, processing 100-500 μm of spacing, laser scan rate 100-800mm/s.
5. the preparation method according to claim 4, which is characterized in that " mastoid process " shape structure processes 100 μ of diameter in step 3
M, 100 μm of spacing, laser scan rate 100mm/s are processed.
6. preparation method according to claim 1, which is characterized in that crude green body three immerses acidic deruster in step 4
Time is 4 ~ 6min.
7. preparation method according to claim 1, which is characterized in that impregnate silicon fluoride used and anhydrous second in step 5
The volume ratio of alcohol is 1: 10.
8. preparation method according to claim 1, which is characterized in that crude green body four immerses anti-in mixed solution in step 5
The time answered is 2.5 ~ 3h.
9. preparation method according to claim 1, which is characterized in that the temperature of sample drying is 70 ~ 80 in step 5
DEG C, the dry time is 20 ~ 30min.
10. a kind of bionical adherent surfaces as made from the described in any item preparation methods of claim 1-9.
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| CN201910071092.5A CN109881192A (en) | 2019-01-25 | 2019-01-25 | A kind of bionical adherent surfaces and preparation method thereof |
| PCT/CN2019/114522 WO2020151288A1 (en) | 2019-01-25 | 2019-10-31 | Bionic and anti-stick surface and preparation method therefor |
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| CN110604615A (en) * | 2019-10-16 | 2019-12-24 | 大连顺达微创科技有限公司 | Blood-sticking-preventing operation electrode and preparation method thereof |
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Application publication date: 20190614 |