A device for preparing and preserving asphalt samples for atomic force microscopy

Abstract

This utility model discloses a device for preparing and preserving asphalt samples for atomic force microscopy (AFM), belonging to the field of AFM sample preparation technology. It includes a box body and a lid mounted on the box body. Inside the box body are a support and a glass slide, with the slide placed on the support. The support includes a placement rack and a supporting frame. The back of the placement rack has a second placement groove, and the top of the supporting frame has a retaining pin. When the retaining pin is placed in the second placement groove, the angle between the placement rack and the horizontal plane is 45°. Therefore, this utility model, through the above structure, by setting a 45° inclined support and a sealable box body, achieves automatic leveling and dust-free preservation of asphalt samples during the heating process, ensuring consistent sample thickness, a smooth and clean surface, and improving the accuracy and repeatability of AFM imaging.

Description

Technical Field

[0001] This utility model relates to the field of sample preparation technology for atomic force microscopy, and in particular to a device for preparing and preserving asphalt samples for atomic force microscopy. Background Technology

[0002] In nanomechanical testing, the analytical precision of asphalt materials by atomic force microscopy (AFM) is limited by the sample preparation process. Traditional methods have three major technical bottlenecks: (1) Current conventional atomic force sample preparation and preservation methods cannot guarantee the consistency of asphalt samples throughout the process, thus affecting the accuracy of the test; (2) The sample surface has uneven or rough areas, and the thickness of each sample is different; (3) The sample preparation process is easily affected by contaminants such as dust, which can lead to false signals or image distortion.

[0003] Therefore, there is a need to provide a device for preparing and preserving asphalt samples for atomic force microscopy. Utility Model Content

[0004] The purpose of this invention is to provide a device for preparing and preserving asphalt samples for atomic force microscopy, thereby solving the aforementioned problems.

[0005] To achieve the above objectives, this utility model provides a device for preparing and preserving asphalt samples for an atomic force microscope, including a box body and a box cover disposed on the box body. The box body contains a support and a glass slide, and the glass slide is placed on the support.

[0006] The bracket includes a placement frame and a support frame. The back of the placement frame is provided with a second placement groove, and the top of the support frame is provided with a retaining pin. When the retaining pin is placed in the second placement groove, the angle between the placement frame and the horizontal plane is 45°.

[0007] Preferably, the box body has several support slots inside, and the placement rack and the support rack are set in the support slots via a rotating shaft. The size of the placement rack is smaller than the size of the support slot.

[0008] Preferably, the back of the placement rack is further provided with a first placement groove and a third placement groove, the second placement groove is disposed between the first placement groove and the third placement groove, and the distance between the first placement groove and the third placement groove is equal to the distance between the rotating shaft at the bottom of the support frame and the locking shaft.

[0009] Preferably, the back of the placement rack is provided with a support frame groove, the width of the support frame groove is equal to the width of the support frame, and the upper surface is provided with side rails to prevent the slide from shifting, except for the upper edge.

[0010] Preferably, the length of the retaining shaft is greater than the length of the side at the top of the support frame.

[0011] Preferably, the dimensions of the placement rack are 70mm×27mm×3mm, the dimensions of the glass slide are 76mm×26mm×1mm, the dimensions of the box lid are 350mm×200mm×2mm, the dimensions of the box body are 350mm×200mm×50mm, and the upper surface of the placement rack is provided with an anti-slip pad.

[0012] Therefore, the present invention employs the above-mentioned apparatus for preparing and preserving asphalt samples for atomic force microscopy, which has the following beneficial effects:

[0013] This invention enables automatic leveling and dust-free preservation of asphalt samples during the heating process by setting a 45° inclined support and a sealable box, ensuring consistent sample thickness, smooth and clean surface, and improving the accuracy and repeatability of atomic force microscopy imaging.

[0014] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a device for preparing and preserving asphalt samples for an atomic force microscope according to the present invention.

[0016] Figure 2 This is a schematic diagram of the support structure.

[0017] Figure 3 This is a schematic diagram of the back of the shelf;

[0018] Labeling instructions

[0019] 1. Box lid; 2. Box body; 3. Glass slide; 4. Support; 41. Placement rack; 42. Support frame; 43. Rotating shaft; 44. Locking shaft; 45. First placement slot; 46. Second placement slot; 47. Third placement slot; 48. Support frame groove; 49. Side rail; 5. Support groove. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar words used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] The specific connection methods for each component all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the existing field. The machinery, parts, and equipment all adopt conventional models in the existing technology. In addition, the circuit connections adopt conventional connection methods in the existing technology, which will not be described in detail here. The component models mentioned in this article are all common models in the existing technology and can be replaced according to actual needs.

[0023] As per the instruction manual Figure 1-3 As shown, this utility model discloses a device for preparing and preserving asphalt samples for atomic force microscopy, including a box body 2 and a box cover 1 disposed on the box body 2. A support 4 and a glass slide 3 are disposed inside the box body 2. The support 4, box cover 1, and box body are all made of polyphenylene sulfide material, which can withstand long-term use at a high temperature of 200℃. The glass slide 3 is placed on the support 4. The support 4 includes a placement frame 41 and a support frame 42. A rotating shaft 43 is provided at the bottom of both the placement frame 41 and the support frame 42. Several support grooves 5 are carved inside the box body 2. The size of the placement frame 41 is slightly smaller than the size of the support grooves 5. The placement frame 41 and the support frame 42 are both disposed within the support grooves 5 via the rotating shafts 43.

[0024] The top of the support frame 42 is also provided with a retaining shaft 44, the length of which is greater than the length of the side of the top of the support frame 42.

[0025] The back of the placement rack 41 has a first placement slot 45, a second placement slot 46, and a third placement slot 47 arranged sequentially from top to bottom. The distance between the first placement slot 45 and the third placement slot 47 is equal to the distance between the rotating shaft 43 and the retaining shaft 44 at the bottom of the support frame 42. The back of the placement rack 41 also has a support frame groove 48, the width of which is equal to the width of the support frame 42.

[0026] Therefore, when laid flat, the support frame 42 can be stored under the placement frame 41. The first placement slot 45 is used to place the rotating shaft 43 at the bottom of the support frame 42, and the third placement slot 47 is used to place the retaining shaft 44 at the top of the support frame 42. When in use, the retaining shaft 44 is placed in the second placement slot 46, and the angle between the placement frame 41 and the horizontal plane is 45°.

[0027] The upper surface of the placement rack 41 is provided with side rails 49 on the other three edges except for the upper edge, to fix the glass slide 3 and prevent it from sliding or shifting during heating.

[0028] The dimensions of the shelf 41 are 70mm×27mm×3mm, the dimensions of the glass slide 3 are 76mm×26mm×1mm, the dimensions of the lid 1 are 350mm×200mm×2mm, and the dimensions of the box body are 350mm×200mm×50mm. The upper surface of the shelf 41 is provided with a high-temperature resistant anti-slip pad.

[0029] In use, place the clamp 44 in the second placement slot 46, with the angle between the placement frame 41 and the horizontal plane at 45°. Place an equal mass of asphalt sample in the center of the glass slide 3, and place the glass slide 3 at the top of the placement frame 41. The entire apparatus is then placed in an oven preheated to 160°C. During heating, the asphalt flows uniformly along the surface of the glass slide 3 under gravity, forming a thin film of uniform thickness and a smooth surface. After heating, carefully lift the placement frame 41 slightly, allowing the support frame 42 to drop to a horizontal position, thus slowly leveling the placement frame 41 from an inclined position to a horizontal position to avoid disturbing the formed asphalt film. Then, cover the oven with the lid 1 to prevent dust and other particles from contaminating the sample surface. Remove the apparatus from the oven and wait for the sample to cool to room temperature to obtain an asphalt sample that meets the requirements of AFM testing.

[0030] Therefore, this utility model provides a device for preparing and preserving asphalt samples for atomic force microscopy using the above-mentioned structure. By setting a 45° inclined support and a sealable box, it achieves automatic leveling and dust-free preservation of asphalt samples during the heating process, ensuring consistent sample thickness, smooth and clean surface, and improving the imaging accuracy and repeatability of atomic force microscopy.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A device for preparing and preserving asphalt samples for atomic force microscopy, characterized in that: The box includes a box body and a box lid disposed on the box body. Inside the box body, there is a support and a glass slide, and the glass slide is placed on the support. The bracket includes a placement frame and a support frame. The back of the placement frame is provided with a second placement groove, and the top of the support frame is provided with a retaining pin. When the retaining pin is placed in the second placement groove, the angle between the placement frame and the horizontal plane is 45°.

2. The apparatus for preparing and preserving asphalt samples for atomic force microscopy according to claim 1, characterized in that: The box body has several support slots inside. The placement rack and the support rack are set in the support slots by a rotating shaft. The size of the placement rack is smaller than the size of the support slot.

3. The apparatus for preparing and preserving asphalt samples for atomic force microscopy according to claim 2, characterized in that: The back of the placement rack is also provided with a first placement slot and a third placement slot. The second placement slot is located between the first placement slot and the third placement slot. The distance between the first placement slot and the third placement slot is equal to the distance between the rotating shaft at the bottom of the support frame and the locking shaft.

4. The apparatus for preparing and preserving asphalt samples for atomic force microscopy according to claim 3, characterized in that: The back of the placement rack is provided with a support frame groove, the width of which is equal to the width of the support frame. The upper surface of the placement rack is provided with side rails to prevent the slide from shifting, except for the upper edge.

5. The apparatus for preparing and preserving asphalt samples for atomic force microscopy according to claim 4, characterized in that: The length of the clasp is greater than the length of the side at the top of the support frame.

6. The apparatus for preparing and preserving asphalt samples for atomic force microscopy according to claim 5, characterized in that: The dimensions of the placement rack are 70mm×27mm×3mm, the dimensions of the glass slide are 76mm×26mm×1mm, the dimensions of the box lid are 350mm×200mm×2mm, the dimensions of the box body are 350mm×200mm×50mm, and the upper surface of the placement rack is provided with an anti-slip pad.

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