Contact angle measuring instrument suitable for photosensitive material

Abstract

The utility model discloses a contact angle measuring instrument suitable for a photosensitive material, which comprises a base, a movable objective table arranged on the base, a camera shooting assembly and a support, the camera shooting assembly and the support are respectively arranged on two opposite sides of a driving assembly, a liquid dropping unit is arranged on the support, and the contact angle measuring instrument also comprises a photosensitive excitation assembly arranged on the support, the light source I is arranged on the bracket and is matched with the camera component; the photosensitive excitation assembly comprises a lamp holder fixed to the support and a light source II detachably connected with the lamp holder. According to the contact angle measuring instrument suitable for the photosensitive material provided by the utility model, the photosensitive excitation assembly is arranged to excite the characteristics of the measured photosensitive material, so that the measured photosensitive material presents a real reaction state in the testing process, and the contact angle can be measured more accurately; meanwhile, the original positions of the light sources II with different wavelengths can be replaced according to experimental requirements, the uniqueness of the positions of the light sources II is controlled, and the experimental requirements of photosensitive materials are met.

Description

Technical Field

[0001] The utility model relates to the technical field of contact angle testing, and more specifically, to a contact angle measuring instrument suitable for photosensitive materials. Background Art

[0002] Photosensitive materials are widely used in optoelectronic devices, sensors, coatings, printed circuits, and other fields. Understanding their surface properties is crucial for optimizing these applications. Contact angle is a key parameter that characterizes the wettability of a material's surface, influencing properties such as adhesion, coating uniformity, and biocompatibility. Contact angle testing can be used to assess the effects of different surface treatments, chemical modifications, or nanostructures on the properties of photosensitive materials, thereby guiding the design and optimization of materials. In basic research and industrial applications, contact angle testing provides important data support for understanding the physical and chemical properties of photosensitive materials, driving the development of related technologies.

[0003] The utility model patent application number CN218628172U discloses a new contact angle measuring instrument, which includes a measuring instrument mounting frame, a fixing table, a light source and an imaging device. The top middle position of the measuring instrument mounting frame is connected to a stage by bolts.

[0004] Although the new contact angle measuring instrument can be conveniently loaded and measured directly after the material is adjusted and leveled, thereby improving the overall measurement efficiency, this device cannot meet the experimental requirements of photosensitive materials. When conducting contact angle tests on photosensitive materials, due to the different properties of the photosensitive materials themselves, the test needs to be carried out under different wavelengths of light. For example, titanium dioxide mainly absorbs ultraviolet light, and the absorption wavelength is generally between 200-400nm; while carbon nitride mainly absorbs visible light, and the absorption wavelength is generally between 400-800nm. When conducting contact angle tests on these materials, under conventional test conditions, an additional light source adapted to the absorption wavelength is required to induce the material to undergo a specific reaction (physical or chemical change) so that it presents a real reaction state during the test process, so as to more accurately measure the contact angle. In addition, if this contact angle measuring instrument is used during the test and a light source of the corresponding wavelength is held above the photosensitive material to stimulate the properties of the photosensitive material, the detection effect is also very easy to change due to the position of the handheld light source, which affects the accuracy of the contact angle test. Existing contact angle testing platforms cannot meet the experimental requirements of photosensitive materials, so we need a device that can test the contact angle of photosensitive materials under light. Utility Model Content

[0005] An object of the present invention is to solve the above-mentioned problems and / or disadvantages and to provide advantages as will be described below.

[0006] To achieve these objects and other advantages of the present invention, a contact angle measuring instrument suitable for photosensitive materials is provided, comprising: a base, a movable stage disposed on the base, a camera assembly, and a bracket, the camera assembly and the bracket being disposed on opposite sides of a driving assembly, the bracket being provided with a dripping unit, a photosensitive excitation assembly disposed on the bracket, and a light source I disposed on the bracket and cooperating with the camera assembly;

[0007] The photosensitive excitation assembly includes: a lamp holder fixed to the bracket, and a light source II detachably connected to the lamp holder;

[0008] Wherein, the light source II is arranged above the stage.

[0009] Preferably, the light source II is configured in a ring shape;

[0010] The dropper of the dripping unit is perpendicular to the light source II and is arranged at the center of the light source II.

[0011] Preferably, the dripping unit is connected to the bracket via a slide rail assembly;

[0012] The slide rail assembly includes: a connecting block I and a connecting block II respectively connected to the bracket and the drip unit;

[0013] The connecting block I is provided with a vertically arranged slide groove and a bottom plate for supporting the connecting block II;

[0014] The connecting block II is provided with a sliding block that cooperates with the sliding groove.

[0015] Preferably, the connecting block I is provided with a vertically arranged avoidance groove;

[0016] An elastic member is provided in the avoidance groove, and the upper end of the elastic member contacts the connecting block I, and the lower end of the elastic member is fixed to the connecting block II.

[0017] The present invention has at least the following beneficial effects: by setting a photosensitive excitation component to stimulate the characteristics of the photosensitive material to be tested, it can present a real reaction state during the test, so as to measure the contact angle more accurately; at the same time, the original position of the light source II of different wavelengths can be replaced according to the experimental needs, and the uniqueness of the position of the light source II can be controlled to meet the experimental requirements of the photosensitive material.

[0018] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a contact angle measuring instrument suitable for photosensitive materials in one embodiment of the present invention;

[0020] Figure 2 A top view of a contact angle measuring instrument suitable for photosensitive materials in one embodiment of the present invention;

[0021] Figure 3 This is a structural schematic diagram of a slide rail assembly of a contact angle measuring instrument for photosensitive materials in one embodiment of the present invention;

[0022] Figure 4 This is a structural schematic diagram of a connection block II of a contact angle measuring instrument suitable for photosensitive materials in one embodiment of the present utility model;

[0023] Figure 5 This is a structural schematic diagram of a connection block I of a contact angle measuring instrument suitable for photosensitive materials in one embodiment of the present utility model.

[0024] Markings in the figure: 1. Base, 2. Movable stage, 21. Control knob, 22. Platform, 3. Camera assembly, 31. Vertical rod, 32. Horizontal rod, 33. Distance adjustment part, 331. Mirror adjustment knob, 34. Adapter, 341. Rack, 35. High-speed camera, 4. Bracket, 5. Dripping unit, 51. Dripping knob, 6. Photosensitive excitation assembly, 61. Lamp holder, 62. Light source II, 7. Light source I, 8. Slide rail assembly, 81. Connecting block I, 811. Slide groove, 812. Bottom plate, 813. Avoidance groove, 82. Connecting block II, 821. Slider, 822. Elastic part. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0026] It should be understood that terms such as “having,” “including,” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0027] It should be noted that in the description of this utility model, the orientations or positional relationships indicated by terms are based on the orientations or positional relationships shown in the accompanying drawings. This is intended solely to facilitate the description of this utility model and simplify the description. It does not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be construed as limiting this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, in the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Example 1

[0031] A contact angle measuring instrument suitable for photosensitive materials, the structure of which is as follows Figure 1-2 As shown, it includes: a base 1, a movable stage 2 provided on the base 1, a camera assembly 3 and a bracket 4, wherein the camera assembly 3 and the bracket 4 are respectively provided on opposite sides of the driving assembly, a dripping unit 5 is provided on the bracket 4, and further includes a photosensitive excitation assembly 6 provided on the bracket 4, and a light source I 7 provided on the bracket 4 and cooperating with the camera assembly 3;

[0032] The photosensitive excitation assembly 6 includes: a lamp holder 61 fixed to the bracket 4, and a light source II 62 detachably connected to the lamp holder 61;

[0033] The light source II 62 is disposed above the stage.

[0034] In actual application, the movable stage 2 and the bracket 4 are fixed to the base 1 by bolts; the movable stage 2 can move its uppermost platform 22 in the horizontal direction by rotating the corresponding control knob 21; it is convenient for the mobile platform 22 to perform repetitive droplet tests on multiple points of the same material to ensure the accuracy of the experiment. A manually controllable droplet knob 51 is provided above the drip unit 5; the camera assembly 3 includes: a vertical rod 31 fixedly connected to the bottom plate 812, a horizontal rod 32 slidably connected to the vertical rod 31, a distance adjusting member 33 slidably connected to the horizontal and vertical directions, an adapter 34 connected to the distance adjusting member 33, and a high-speed camera provided at the free end of the adapter 34; the distance adjusting member 33 is provided with a gear and a lens adjusting knob 331 for controlling the rotation of the gear; the adapter 34 is provided with a rack 341 that matches the gear at the connection end with the distance adjusting member 33; the vertical rod 31 It is slidably connected to the cross bar 32, which makes it easy to adjust the height of the high-speed camera and the object to be tested to the same horizontal line; the distance between the high-speed camera and the sample to be tested can be quickly adjusted by directly moving the cross bar 32 and the distance adjusting member 33, and the high-speed camera can be moved away from or closer to the sample to be tested by turning the lens adjustment knob 331, which can more accurately adjust the distance between the two and facilitate the focusing of the lens; the lamp holder 61 and the light source II 62 are configured as a plug-in structure of an ordinary plug to conduct the circuit, so that the light source II 62 can be quickly replaced.

[0035] Working Principle: During testing, the device first installs the movable stage 2, camera assembly 3, and bracket 4 on the base 1. The sample to be tested, located on the movable stage 2, is moved below the center of light source II 62. This causes a physical or chemical reaction on the sample surface through photocatalysis, altering the surface topography and affecting its adhesion. A droplet of liquid is then deposited onto the sample via the droplet unit 5. Once the droplet stabilizes, its contact angle is measured. Simultaneously, a high-speed camera forms an optical projection with light source I 7, ultimately recording the contours of the liquid and sample surface, thereby analyzing the mechanism by which light alters the contact angle of photosensitive materials.

[0036] By setting up a photosensitive excitation component 6 to excite the characteristics of the photosensitive material to be tested, it can present a real reaction state during the test, so as to measure the contact angle more accurately; at the same time, the original position of the light source II 62 of different wavelengths can be replaced according to the experimental needs, and the uniqueness of the position of the light source II 62 can be controlled to meet the experimental requirements of the photosensitive material.

[0037] Light source II62 is a detachable connection. For different photosensitive materials, light source II62 with the corresponding wavelength range can be selected for testing, which improves the compatibility and applicability of the device. It can observe in real time the changes in the contact angle of the droplet after the photosensitive material is irradiated, and effectively analyze the contact angle change mechanism of the photosensitive material under different wavelength light sources and different illumination times.

[0038] Example 2

[0039] This embodiment 2 is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1-2 As shown, it discloses the following improvements based on embodiment 1: the light source II 62 is configured in a ring shape;

[0040] The dropper of the dripping unit 5 is perpendicular to the light source II 62 and is located at the center of the light source II 62 .

[0041] Working principle: By setting the light source II62 to be annular, the photosensitive material can be illuminated in all directions, ensuring that the light exposure on the surface of the photosensitive material is basically uniform; the dropper of the dripping unit 5 is set perpendicular to the light source II62 and is located at the center of the light source II62. During the test, it can be ensured that the water drop position of the sample is evenly illuminated by the light of the light source II62, thereby ensuring the stability of the experiment.

[0042] Example 3

[0043] This embodiment 3 is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1-5 As shown, it discloses the following improvements based on embodiment 2: the dripping unit 5 is connected to the bracket 4 through a slide rail assembly 8;

[0044] The slide rail assembly 8 includes: a connecting block I 81 and a connecting block II 82 respectively connected to the bracket 4 and the drip unit 5;

[0045] The connecting block I 81 is provided with a vertically arranged slide groove 811 and a bottom plate 812 for supporting the connecting block II 82;

[0046] The connecting block II 82 is provided with a slider 821 that cooperates with the slide groove 811 .

[0047] The connecting block I 81 is provided with a vertically arranged avoidance groove 813;

[0048] An elastic member 822 is provided in the avoidance groove 813, and the upper end of the elastic member 822 conflicts with the connecting block I81, and the lower end of the elastic member 822 is fixed to the connecting block II82; this can prevent the connecting block II82 from directly detaching from the connecting block I81 at the top, and at the same time assist the connecting block II82 to return to its original position, so that the bottom of the connecting block II82 is always in close contact with the bottom plate 812 of the connecting block I81 during normal operation, thereby improving the stability of the device.

[0049] In actual application, the elastic member 822 is configured as a spring and is arranged on both sides of the connecting block II 82 to ensure that it is evenly stressed. The cross section of the slide groove 811 is "T"-shaped to prevent the slider 821 and the slide groove 811 from lateral displacement.

[0050] Working Principle: To avoid interference between the dripping unit 5 and the light source II 62 during the replacement operation, thereby damaging the dripping unit 5, and to improve the replacement efficiency, a slide rail assembly 8 is provided to quickly and temporarily raise the height of the dripping unit 5, and automatically return it to its original position after replacement. When replacing the light source II 62, the handheld connecting block II 82 is directly lifted along the slide groove 811 a certain distance with the dripping unit 5, avoiding the light source II 62, so that the device can quickly replace the light source II 62 without adjusting the movable stage 2. After the replacement is completed, the handheld connecting block II 82 returns to its original position.

[0051] The above solutions are only examples of preferred embodiments, but are not limited thereto. When implementing the present invention, appropriate replacements and / or modifications can be made according to user needs.

[0052] The number of devices and processing scales described herein are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

[0053] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and exemplary embodiments. They can be applied to a variety of fields suitable for the present invention. Further modifications will be readily apparent to those skilled in the art. Therefore, the present invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims

1. A contact angle measuring instrument suitable for photosensitive materials, comprising: A base, a movable stage, a camera assembly, and a bracket disposed on the base, the camera assembly and the bracket being disposed on opposite sides of the drive assembly, the bracket being provided with a dripping unit, and further comprising a photosensitive excitation assembly disposed on the bracket, and a light source I disposed on the bracket and cooperating with the camera assembly; The photosensitive excitation assembly includes: a lamp holder fixed to the bracket, and a light source II detachably connected to the lamp holder; Wherein, the light source II is arranged above the stage.

2. The contact angle measuring instrument for photosensitive materials according to claim 1, characterized in that: The light source II is configured in a ring shape; The dropper of the dripping unit is perpendicular to the light source II and is arranged at the center of the light source II.

3. The contact angle measuring instrument for photosensitive materials according to claim 2, characterized in that: The dripping unit is connected to the bracket via a slide rail assembly; The slide rail assembly includes: a connecting block I and a connecting block II respectively connected to the bracket and the drip unit; The connecting block I is provided with a vertically arranged slide groove and a bottom plate for supporting the connecting block II; The connecting block II is provided with a sliding block that cooperates with the sliding groove.

4. The contact angle measuring instrument for photosensitive materials according to claim 3, characterized in that: The connecting block I is provided with a vertical avoidance groove; An elastic member is provided in the avoidance groove, and the upper end of the elastic member contacts the connecting block I, and the lower end of the elastic member is fixed to the connecting block II.

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