CN220063749U - Underwater super-oleophobic surface wettability detection table - Google Patents
Underwater super-oleophobic surface wettability detection table Download PDFInfo
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- CN220063749U CN220063749U CN202321580355.3U CN202321580355U CN220063749U CN 220063749 U CN220063749 U CN 220063749U CN 202321580355 U CN202321580355 U CN 202321580355U CN 220063749 U CN220063749 U CN 220063749U
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- measuring probe
- oleophobic
- underwater
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- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 239000000523 sample Substances 0.000 claims abstract description 70
- 239000011521 glass Substances 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000008367 deionised water Substances 0.000 claims abstract description 9
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 9
- 239000005388 borosilicate glass Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 21
- 238000012512 characterization method Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003075 superhydrophobic effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/204—Keeping clear the surface of open water from oil spills
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The utility model discloses an underwater super-oleophobic surface wettability detection table, which is fixedly provided with a horizontal base, wherein a horizontally movable displacement platform is arranged on the horizontal base, a glass dish is fixedly arranged on the displacement platform, deionized water is injected into the glass dish, a sample is placed in the glass dish, oil drops to be detected are dripped on the sample, and the oil drops and the sample are immersed in the deionized water; the measuring probe is a rectangular strip borosilicate glass capillary, the upper end of the vertical measuring probe is fixed on the horizontal base, the lower end of the measuring probe is a free end capable of elastically deforming, and the free end is suspended above the sample; the utility model is used for realizing detection of the transverse friction force change process of underwater oil drops on the super-oleophobic solid surface, thereby realizing accurate characterization of the wettability of the underwater super-oleophobic solid surface.
Description
Technical Field
The utility model relates to an underwater super-oleophobic surface wettability detection table which is used for realizing underwater solid surface wettability characterization.
Background
The wettability of a solid surface is an important performance indicator in interfacial chemistry. From super-hydrophobic and super-hydrophilic in the air to underwater super-oleophobic, underwater super-oleophilic, underwater super-oleophobic and the like in a liquid phase environment, a rich super-infiltration system is formed. The underwater super-oleophobic surface has great potential because of the practical application in the fields of oil-water separation, anti-biological adhesion, oil resistance, anti-fouling, self-cleaning and the like, and is widely focused. Currently, the wettability characterization of the underwater solid surface mainly utilizes a contact angle method, but the influence factors of the wettability characterization of the underwater solid surface in the measurement process are many, including the roughness, uniformity, pollution condition and the like of the solid surface. Even if the surface of the test sample is ensured to be flat, the observation result of the light path can be influenced under the liquid phase condition, so that certain error exists when the baseline measurement is adjusted. Compared with the traditional wettability characterization method, the existing research shows that the direct quantitative measurement of wettability through the mechanical property between solid-liquid interfaces is a novel method for characterizing the wettability of the solid surface, and the real-time in-situ detection of the wettability of the solid surface can be realized.
In the patent document with the publication number of CN110749527A, a method for representing the oleophobic characteristic of an underwater superoleophobic surface based on longitudinal adhesion force is disclosed, an atomic force microscope is adopted, an oil drop is adhered to a micro-cantilever probe of the atomic force microscope, the superoleophobic surface is covered on a substrate of the atomic force microscope, and the surface wettability of the underwater oil drop is represented by detecting the longitudinal adhesion force of the underwater oil drop on the superoleophobic surface; the underwater surface acting force is divided into longitudinal and transverse, the longitudinal direction is biased towards static representation, the transverse direction is dynamic representation of the liquid drop when the surface moves, the detection system detects the size of the longitudinal adhesive force of the liquid drop, but the detection system cannot detect the transverse friction force of the liquid drop when the oil drop moves on the oleophobic surface, so that the change of the wetting degree of the liquid drop when the oil drop moves on the oleophobic surface cannot be represented.
Disclosure of Invention
The utility model provides the underwater superoleophobic surface wettability detection table for avoiding the defects in the prior art, so that high-sensitivity detection of transverse friction force of the underwater superoleophobic surface is realized, and the surface wettability of the underwater superoleophobic surface is accurately represented.
The utility model adopts the following technical scheme for solving the technical problems:
the utility model relates to an underwater super-oleophobic surface wettability detection table which is characterized by comprising: a horizontal base is fixedly arranged, and a displacement platform capable of horizontally moving is arranged on the horizontal base; glass is fixedly arranged on the displacement platform, deionized water is injected into the glass vessel, a sample is placed in the glass vessel, oil drops to be detected are dripped on the sample, the oil drops to be detected and the sample are immersed in the deionized water, and the sample is an oleophobic solid sample; the method comprises the steps that a force measuring probe is arranged, the force measuring probe is a rectangular strip borosilicate glass capillary, the upper end of the force measuring probe is fixedly clamped on a horizontal base by a probe support, the lower end of the force measuring probe is a free end capable of elastically deforming, and the free end is suspended above a sample and is beside oil drops; the CCD high-speed camera is arranged, the camera support is fixedly arranged on the horizontal base, and image information of the free end of the force measuring probe and oil drops in the detection process is obtained through shooting.
The underwater super-oleophobic surface wettability detection table is also characterized in that: the method comprises the steps of arranging a microsyringe, wherein the microsyringe is fixedly arranged on a horizontal base by utilizing a syringe bracket and is positioned at one side of a probe bracket, the microsyringe is driven by the syringe bracket to vertically move up and down, the bottom of the microsyringe is provided with a syringe liquid hole, and oil liquid stored in the microsyringe is dripped on the upper surface of a sample through the syringe liquid hole;
the underwater super-oleophobic surface wettability detection table is also characterized in that: the capacity of the microsyringe is 10 mu L, and the diameter of the liquid hole of the syringe is 0.05mm.
The underwater super-oleophobic surface wettability detection table is also characterized in that: a background light source is arranged on one side of the glass dish.
The underwater super-oleophobic surface wettability detection table is also characterized in that: the force measuring probe is a rectangular strip borosilicate glass capillary tube with the length of 50mm, the width of 1mm, the thickness of 0.1mm and the elastic modulus of 0-10 mu N/mu m.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the deflection change of the free end of the force measuring probe under water is obtained through detection, so that the accurate detection of the surface stress on the micro-nano scale is realized, and the transverse friction force and the wetting degree change condition between the underwater oil drops and the super-oleophobic solid surface are simply and reliably obtained;
2. the utility model has simple structure and easy realization.
Drawings
FIG. 1 is a schematic diagram of the structure of a test bench according to the present utility model;
reference numerals in the drawings: 1 a force measuring probe, 2 a probe support, 3 a micro liquid feeder, 4 a sample feeder support, 5 a CCD high-speed camera, 6 a displacement platform, 7a background light source, 8 a glass dish and 9 samples.
Detailed Description
Referring to fig. 1, the underwater super-oleophobic surface wettability detection stage of this embodiment includes: a horizontal base is fixedly arranged, and a displacement platform 6 capable of horizontally moving is arranged on the horizontal base; a glass dish 8 is fixedly arranged on the displacement platform 6, deionized water is injected into the glass dish 8, a sample 9 is placed in the glass dish 8, oil drops to be detected are dripped on the sample 9, the oil drops to be detected and the sample 9 are immersed in the deionized water, and the sample 9 is an oleophobic solid sample; the method comprises the steps that a force measuring probe 1 is arranged, the force measuring probe is a rectangular strip borosilicate glass capillary, the upper end of the force measuring probe 1 is fixedly clamped on a horizontal base by a probe support 2, the lower end of the force measuring probe 1 is a free end which can be elastically deformed and has undergone oleophobic treatment, the free end is suspended above a sample 9 and is positioned beside oil drops, and a horizontal distance of 1-2cm is reserved between the free end of the force measuring probe 1 and the oil drops; the CCD high-speed camera 5 is arranged, the camera support is fixedly arranged on the horizontal base, the image information of the free end of the force measuring probe 1 and oil drops in the detection process is obtained through shooting, and the free end horizontal deflection can be further obtained through image processing.
In specific implementation, the corresponding technical measures and device selection also comprise:
the micro-injector 3 is arranged, the micro-injector 3 is fixedly arranged on a horizontal base by utilizing an injector support 4 and is positioned at one side of the probe support 2, the micro-injector 3 is driven by the injector support 4 to vertically move up and down, the bottom of the micro-injector 3 is an injector liquid hole at the oleophobic position, and the oil liquid stored in the micro-injector 3 is dripped on the upper surface of a sample 9 through the injector liquid hole.
A background light source 7 is provided on one side of the glass dish 8 to ensure that the CCD high-speed camera 5 can take clear images.
The capacity of the microinjector 3 was 10. Mu.L, the diameter of the syringe liquid hole was 0.05mm, and the syringe liquid hole of the microinjector was set to be flat head.
The force measuring probe 1 is a rectangular strip borosilicate glass capillary tube with the length of 50mm, the width of 1mm, the thickness of 0.1mm and the elastic modulus of 0-10 mu N/mu m.
The displacement platform 6 is set as a two-dimensional moving platform, the direction of the relative motion of the driving sample and the force measuring probe 1 is defined as the main motion direction, the resolution of the CCD high-speed camera is 768×576, the definition is 600 lines, the shooting direction of the CCD high-speed camera 5 is perpendicular to the main motion direction, the relative motion speed of the main motion direction is set to be 0.35 millimeter per second, and the oil drop to be measured is 3 microliter oil drop.
The detection process comprises the following steps:
firstly, adding enough deionized water into a glass vessel 8 for forming a required underwater liquid phase environment, lowering a microsyringe 3 by utilizing the descent of a syringe support 4 until oil drops suspended in a syringe liquid hole are contacted with the upper surface of a sample, enabling the oil drops to be fully contacted with the super oleophobic solid surface without damaging the surface tension of the oil drops, and then lifting the microsyringe 3 by utilizing the ascent of the syringe support 4, so that the oil drops are dripped on the upper surface of the sample.
Then, the stepping motor is started to enable the displacement platform 6 to horizontally move, oil drops are enabled to be propped against the free end of the force measuring probe 1, and in the propping process, the CCD high-speed camera 5 is used for shooting to obtain the shape change of the oil drops and the image of the deflection change of the free end of the force measuring probe 1.
For the obtained image, firstly, obtaining a horizontal deflection X which is shown in a picture shot by a CCD high-speed camera when the free end of the force measuring probe is subjected to deflection change through computer contrast analysis, and then obtaining the actual horizontal deflection length H of the free end of the force measuring probe, namely: h=d×x, where D is the magnification of the CCD high-speed camera; further calculation is carried out to obtain the transverse friction force F of oil drops on the surface of the sample as follows: f=k×h; wherein K is the elastic modulus of the force measuring probe.
The method is used for detecting the wettability of the underwater superoleophobic surface, can further explore the relationship between the wettability of the underwater superoleophobic solid surface and the transverse friction of the surface of the underwater superoleophobic solid surface on the basis of the research of a conventional gas-phase solid surface wettability characterization method, and utilizes the bending process of the end part of the underwater detection force measuring probe and the interaction force of liquid drops between wettability interfaces needing to be characterized to establish the relationship so as to realize the indirect characterization of the wettability of the underwater superoleophobic surface. More accurate contact angle measurements than conventional ones.
The present utility model has been described in terms of specific embodiments, but these should not be construed as limiting the utility model, and various changes and modifications to the solution of the utility model will be apparent to those skilled in the art without departing from the spirit of the utility model, and it is intended to cover the scope of the utility model as defined by the appended claims.
Claims (5)
1. An underwater superoleophobic surface wettability detection table, characterized by comprising:
a horizontal base is fixedly arranged, and a displacement platform (6) capable of horizontally moving is arranged on the horizontal base; a glass dish (8) is fixedly arranged on the displacement platform (6), deionized water is injected into the glass dish (8), a sample (9) is placed in the glass dish (8), oil drops to be detected are dripped on the sample (9), the oil drops to be detected and the sample (9) are immersed in the deionized water, and the sample (9) is an oleophobic solid sample;
the method comprises the steps that a force measuring probe (1) is arranged, the force measuring probe is a rectangular strip borosilicate glass capillary, the upper end of the force measuring probe (1) is fixedly clamped on a horizontal base by a probe support (2), the lower end of the force measuring probe (1) is a free end capable of elastically deforming, and the free end is suspended above a sample (9) and is beside oil drops;
the CCD high-speed camera (5) is arranged, the CCD high-speed camera is fixedly arranged on the horizontal base through a camera bracket, and image information of the free end of the force measuring probe (1) and oil drops in the detection process is obtained through shooting.
2. The underwater super-oleophobic surface wettability detection station of claim 1, wherein: the micro-injector (3) is arranged, the micro-injector is fixedly arranged on the horizontal base by utilizing the injector support (4) and is positioned on one side of the probe support (2), the micro-injector (3) is driven by the injector support (4) to vertically move up and down, the bottom of the micro-injector (3) is provided with an injector liquid hole, and oil liquid stored in the micro-injector (3) is dripped on the upper surface of the sample (9) through the injector liquid hole.
3. The underwater super-oleophobic surface wettability detection station of claim 2, wherein: the capacity of the microsyringe (3) is 10 mu L, and the diameter of the liquid hole of the syringe is 0.05mm.
4. The underwater super-oleophobic surface wettability detection station of claim 1, wherein: a background light source (7) is arranged on one side of the glass dish (8).
5. The underwater super-oleophobic surface wettability detection station of claim 1, wherein: the force measuring probe (1) is a rectangular strip borosilicate glass capillary tube with the length of 50mm, the width of 1mm, the thickness of 0.1mm and the elastic modulus of 0-10 mu N/mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321580355.3U CN220063749U (en) | 2023-06-20 | 2023-06-20 | Underwater super-oleophobic surface wettability detection table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321580355.3U CN220063749U (en) | 2023-06-20 | 2023-06-20 | Underwater super-oleophobic surface wettability detection table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220063749U true CN220063749U (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321580355.3U Active CN220063749U (en) | 2023-06-20 | 2023-06-20 | Underwater super-oleophobic surface wettability detection table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220063749U (en) |
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2023
- 2023-06-20 CN CN202321580355.3U patent/CN220063749U/en active Active
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