A specimen preparation jig for adhesive shear strength

Abstract

The utility model provides a kind of adhesive shear strength sample preparation mould.A kind of adhesive shear strength sample preparation mould, comprising: mould box;The glue injection groove is opened in the middle of the mould box top, the both sides of the outer surface of the mould box are equipped with threaded hole, the inside thread connection of the threaded hole has adjusting device, the mould box is designed to be made of ceramic material.The utility model provides a kind of adhesive shear strength sample preparation mould, mould box is designed to be made of ceramic material, high hardness, high compressive strength, good chemical stability, low thermal expansion coefficient, can guarantee higher sample preparation efficiency, so the length and width of glue layer can be directly obtained, the effective area of glue can be directly calculated;Because of using standard mould sample preparation, it can guarantee sample preparation uniform, and sample is consistent, test result error is small, size precision is high, test data reliability is high, the performance of product can be objectively evaluated, to provide data support for research and development, production.

Description

Technical Field

[0001] This utility model relates to the field of new material testing technology, and in particular to a sample preparation mold for the shear strength of adhesives. Background Technology

[0002] Adhesives are a type of new material that are currently widely used in various fields such as electronics, automobiles, and new energy.

[0003] In formulation design, production and practical application, it is first necessary to evaluate and test its bonding strength for different materials. The existing method for testing shear strength involves applying adhesive to the surface of the substrate to be bonded, then attaching another substrate to it, and then allowing it to cure before testing.

[0004] Because shear strength testing requires knowing the effective area of ​​the adhesive in the bonded area, the adhesive layer of the sample needs to be made into a rectangle to facilitate the measurement of the length and width of the adhesive layer and then to obtain the effective bonded area, thereby determining the bond strength. However, existing sample preparation and testing methods lack a unified standard, which can easily lead to large errors in experimental results. The existing sample preparation and testing method involves applying adhesive to the surface of the bonding substrate. This method cannot effectively control the amount of adhesive, and the length and width of the adhesive layer cannot be accurately measured, making it impossible to calculate the effective bonded area. This results in inaccurate shear strength results, thus affecting the evaluation of product performance.

[0005] Therefore, it is necessary to provide a sample mold for testing the shear strength of adhesives to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a sample preparation mold for the shear strength of adhesives, which solves the problem that existing sample preparation and testing methods lack unified standards and are prone to large errors in experimental results. Existing sample preparation and testing methods involve applying adhesive to the surface of the bonding substrate. This method cannot effectively control the amount of adhesive, and the length and width of the adhesive layer cannot be accurately measured, making it impossible to calculate the effective bonding area. This leads to inaccurate shear strength results, thus affecting the evaluation of product performance.

[0007] To solve the above-mentioned technical problems, this utility model provides an adhesive shear strength sample preparation mold, comprising: a mold box; The injection groove is located in the middle of the top of the mold box. Threaded holes are provided on both sides of the outer surface of the mold box. An adjustment device is connected to the internal thread of the threaded hole. The mold box is made of ceramic material. A numerical comparison device is fixedly connected to one side of the adjustment device, and a limit device is threadedly connected to the top of the numerical comparison device.

[0008] Preferably, the adjustment device includes a first threaded rod, an adjustment block, and a limiting slide plate. The first threaded rod is threaded into the interior of the threaded hole, the adjustment block is fixedly installed at one end of the first threaded rod, and the limiting slide plate is rotatably installed on the outer surface of one end of the first threaded rod.

[0009] Preferably, the numerical comparison device includes a slider, a movable groove, a second threaded rod, an adjusting block, and a distance comparison value. The slider is fixedly installed on one side of the outer surface of the limiting slide plate. The movable groove is opened in the middle of the top of the slider. The second threaded rod is rotatably installed inside the movable groove. The adjusting block is fixedly installed on one end of the second threaded rod. The distance comparison value is set on one side of the top of the slider.

[0010] Preferably, the limiting device includes a threaded block and a stop block, the threaded block being threadedly engaged with the outer surface of the second threaded rod, and the stop block being fixedly installed on the top of the threaded block.

[0011] Preferably, the length and height of the limiting slide plate are matched with the length and height of the glue injection groove, and the limiting slide plate is made of ceramic material.

[0012] Preferably, collection grooves are provided on both sides of the top of the mold box, guide boxes are fixedly installed on the other two sides of the outer surface of the mold box, and recycling boxes are provided at the bottom of the other two sides of the outer surface of the mold box.

[0013] Preferably, a liquid inlet pipe is provided on one side of the top front of the mold box, and a liquid outlet pipe is provided on one side of the bottom front of the mold box.

[0014] Compared with related technologies, the adhesive shear strength sample preparation mold provided by this utility model has the following beneficial effects: This invention provides a sample preparation mold for adhesive shear strength testing. The mold box is made of ceramic material, which has high hardness, high compressive strength, good chemical stability, and low coefficient of thermal expansion, ensuring high sample preparation efficiency. Since the mold size is fixed and known, the length and width of the adhesive layer can be directly obtained, and the effective area of ​​the adhesive can be directly calculated. By using a standard mold for sample preparation, uniformity and consistency of samples can be ensured, resulting in small test result errors, high dimensional accuracy, and high reliability of test data. This allows for objective evaluation of product performance and provides data support for research and development and production. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a first embodiment of an adhesive shear strength sample preparation mold provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the mold box. Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below; Figure 4 This is a schematic diagram of the second embodiment of an adhesive shear strength test mold provided by this utility model.

[0016] The following are the labels in the diagram: 1. Mold box, 2. Injection groove, 3. Threaded hole, 4. Slide groove, 5. Adjustment device, 51. First threaded rod, 52. Adjusting block, 53. Limiting slide plate, 6. Value comparison device, 61. Slider, 62. Moving groove, 63. Second threaded rod, 64. Adjusting block, 65. Distance comparison value, 7. Limiting device, 71. Threaded block, 72. Stop block, 8. Liquid inlet pipe, 9. Liquid outlet pipe, 10. Collection tank, 11. Guide box, 12. Recycling box. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] First Embodiment Please refer to the following: Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of an adhesive shear strength sample preparation mold provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the mold box. Figure 3 for Figure 2 The enlarged schematic diagram of part A is shown.

[0019] An adhesive shear strength test mold includes: a mold box 1; The injection groove 2 is located in the middle of the top of the mold box 1. Threaded holes 3 are provided on both sides of the outer surface of the mold box 1. An adjustment device 5 is threaded inside the threaded holes 3. The mold box 1 is made of ceramic material. A numerical comparison device 6 is fixedly connected to one side of the adjustment device 5, and a limit device 7 is threadedly connected to the top of the numerical comparison device 6.

[0020] The adjustment device 5 includes a first threaded rod 51, an adjustment block 52, and a limiting slide plate 53. The first threaded rod 51 is threaded into the inside of the threaded hole 3. The adjustment block 52 is fixedly installed at one end of the first threaded rod 51. The limiting slide plate 53 is rotatably installed on the outer surface of one end of the first threaded rod 51.

[0021] The numerical comparison device 6 includes a slider 61, a moving groove 62, a second threaded rod 63, an adjusting block 64, and a distance comparison value 65. The slider 61 is fixedly installed on one side of the outer surface of the limiting slide plate 53. The moving groove 62 is opened in the middle of the top of the slider 61. The second threaded rod 63 is rotatably installed inside the moving groove 62. The adjusting block 64 is fixedly installed on one end of the second threaded rod 63. The distance comparison value 65 is set on one side of the top of the slider 61.

[0022] The limiting device 7 includes a threaded block 71 and a stop block 72. The threaded block 71 is threadedly engaged with the outer surface of the second threaded rod 63, and the stop block 72 is fixedly installed on the top of the threaded block 71.

[0023] The length and height of the limiting slide plate 53 are matched with the length and height of the glue injection groove 2, and the limiting slide plate 53 is made of ceramic material.

[0024] The length and height of the limiting slide plate 53 are the same as those of the glue injection tank 2. The sealing between the limiting slide plate 53 and the glue injection tank 2 is good. When the distance between the two limiting slide plates 53 is adjusted, the thickness of the glue injection liquid is limited by the two limiting slide plates 53 when it is poured into the glue injection tank 2.

[0025] Adjusting the position of the stop block 72 at a distance of 65 from the reference value surface allows for adjustment of the blocking position of the stop block 72 according to the required thickness. Then, the position of the limiting slide plate 53 within the glue injection groove 2 can be adjusted so that the limiting slide plate 53 will not have problems with unclear movement distance or exceeding or falling short of the specified distance due to the restriction of the stop block 72, thereby improving the accuracy of the adjustment.

[0026] The working principle of the adhesive shear strength sample preparation mold provided by this utility model is as follows: During the work, the bottom of the mold box 1 is first fixed to the bonding part of the substrate to be tested when preparing the sample. The adhesive is slowly and evenly injected into the glue injection tank 2. The excess glue on the top is gently scraped off with a scraper. Another test substrate is then flatly and tightly attached to the top of the adhesive layer. After curing, the standard sample is finally obtained to test the shear strength.

[0027] Compared with related technologies, the adhesive shear strength sample preparation mold provided by this utility model has the following beneficial effects: This invention provides a sample preparation mold for adhesive shear strength testing. The mold box 1 is made of ceramic material, which has high hardness, high compressive strength, good chemical stability, and low coefficient of thermal expansion, ensuring high sample preparation efficiency. Since the mold size is fixed and known, the length and width of the adhesive layer can be directly obtained, and the effective area of ​​the adhesive can be directly calculated. By using a standard mold for sample preparation, uniformity and consistency of samples can be ensured, resulting in small test result errors, high dimensional accuracy, and high reliability of test data. This allows for objective evaluation of product performance and provides data support for research and development and production.

[0028] Second Embodiment Please refer to the following: Figure 4 Based on the adhesive shear strength sample preparation mold provided in the first embodiment of this application, the second embodiment of this application proposes another adhesive shear strength sample preparation mold. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0029] Specifically, the difference in the adhesive shear strength sample preparation mold provided in the second embodiment of this application is that a collection groove 10 is provided on both sides of the top of the mold box 1, a guide box 11 is fixedly installed on the other two sides of the outer surface of the mold box 1, and a recycling box 12 is provided at the bottom of the other two sides of the outer surface of the mold box 1.

[0030] A liquid inlet pipe 8 is provided on one side of the top front of the mold box 1, and a liquid outlet pipe 9 is provided on one side of the bottom front of the mold box 1.

[0031] The collection groove 10 is set on the side at the same level as the glue injection groove 2, so that the glue scraper at the top of the glue injection groove 2 can be discharged quickly and will not remain on the top of the mold box 1. The cured glue has a thickness, which will affect the substrate bonding and make it unable to adhere to the surface of the mold box 1. The gaps may easily affect the test results.

[0032] The mold box 1 has a cavity inside to hold coolant.

[0033] The recycling box 12 can be placed on the bottom of the adhesive substrate surface, and can be removed after collecting the adhesive.

[0034] The working principle of the adhesive shear strength sample preparation mold provided by this utility model is as follows: During operation, coolant is first added to the mold box 1 through the liquid inlet pipe 8. The coolant cools and cures the glue in the glue injection tank 2 inside the mold box 1. As the usage time increases, the coolant can be drained through the liquid outlet pipe 9 and replaced with new coolant.

[0035] The glue is scraped off from the top of the glue injection tank 2 to both sides by the glue scraper, so that the glue flows into the guide box 11 along the collection tank 10, and then into the inside of the recycling box 12 along the guide box 11. The glue is not easy to remain on the top of the mold box 1, and the cured glue residue on the top of the mold box 1 is avoided from affecting the bonding of the test substrate.

[0036] Compared with related technologies, the adhesive shear strength sample preparation mold provided by this utility model has the following beneficial effects: This utility model provides a sample mold for testing the shear strength of adhesives. Collection grooves 10 are provided on both sides of the top of the mold box 1 to collect excess adhesive scraped off by the scraper. The excess adhesive flows into the recycling box 12 via a guide box 11, facilitating the recycling of excess adhesive and preventing it from remaining on the surface of the mold box 1, thus maintaining the flatness of the top of the mold box 1. Furthermore, the cooperation of the inlet pipe 8 and the outlet pipe 9 allows for the addition of coolant to the inside of the mold box 1, accelerating the curing efficiency of the adhesive injected into the mold box 1. The cooperation of the inlet pipe 8 and the outlet pipe 9 also facilitates the drainage and replacement of the coolant, improving the efficiency of mold forming.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sample mold for testing the shear strength of an adhesive, characterized in that, include: Mold box; The injection groove is located in the middle of the top of the mold box. Threaded holes are provided on both sides of the outer surface of the mold box. An adjustment device is connected to the internal thread of the threaded hole. The mold box is made of ceramic material. A numerical comparison device is fixedly connected to one side of the adjustment device, and a limit device is threadedly connected to the top of the numerical comparison device.

2. The adhesive shear strength sample preparation mold according to claim 1, characterized in that, The adjustment device includes a first threaded rod, an adjustment block, and a limiting slide plate. The first threaded rod is threaded into the inside of the threaded hole. The adjustment block is fixedly installed at one end of the first threaded rod. The limiting slide plate is rotatably installed on the outer surface of one end of the first threaded rod.

3. The adhesive shear strength sample preparation mold according to claim 2, characterized in that, The numerical comparison device includes a slider, a movable groove, a second threaded rod, an adjusting block, and a distance comparison value. The slider is fixedly installed on one side of the outer surface of the limiting slide plate. The movable groove is opened in the middle of the top of the slider. The second threaded rod is rotatably installed inside the movable groove. The adjusting block is fixedly installed on one end of the second threaded rod. The distance comparison value is set on one side of the top of the slider.

4. The adhesive shear strength sample preparation mold according to claim 3, characterized in that, The limiting device includes a threaded block and a stop block. The threaded block is threadedly engaged with the outer surface of the second threaded rod, and the stop block is fixedly installed on the top of the threaded block.

5. The adhesive shear strength sample preparation mold according to claim 2, characterized in that, The length and height of the limiting slide plate are matched with the length and height of the glue injection groove, and the limiting slide plate is made of ceramic material.

6. The adhesive shear strength sample preparation mold according to claim 1, characterized in that, Collection slots are provided on both sides of the top of the mold box, guide boxes are fixedly installed on the other two sides of the outer surface of the mold box, and recycling boxes are provided at the bottom of the other two sides of the outer surface of the mold box.

7. The adhesive shear strength sample preparation mold according to claim 1, characterized in that, A liquid inlet pipe is provided on one side of the top front of the mold box, and a liquid outlet pipe is provided on one side of the bottom front of the mold box.

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