A method for detecting the thrust strength of an adhesive

Abstract

The present invention relates to a method for detecting the thrust strength of an adhesive, belonging to the technical field of adhesive performance detection, and comprising the following steps: a. placing a spacer with a round hole and an anodized aluminum sheet into the aluminum sheet slot of a mold, with the spacer above the anodized aluminum sheet; b. using a dispensing machine to dispense a plurality of glue dots of the same size in the round hole of the spacer, placing a glass sheet into the glass sheet slot, placing a pressure-holding sheet on the glass sheet, and then performing pressure holding with a pressure-holding clamp; c. waiting for the adhesive to cure; d. measuring the thrust N of the cured adhesive; e. measuring the area S of the glue dots; the thrust strength F of the adhesive can be deduced through the following formula: F = N / S. The detection method of the present invention improves the accuracy and stability of data and can effectively reduce the unqualified rate of products.

Description

Technical Field

[0001] The present invention relates to a method for detecting the thrust strength of an adhesive, belonging to the technical field of adhesive performance detection. Background Art

[0002] Adhesives are widely used in the fields of chips, medicine, military, aerospace, civil, industrial and electronics. Due to the wide range of application fields, the detection indexes and requirements of its products are diverse. Thrust strength (also known as shear strength, which refers to the ability of a material to withstand shear force) is an important performance index for evaluating the quality of adhesives. At present, the general method for detecting thrust strength is to adopt the industry standard GB / T 7124-2008 "Determination of Tensile Shear Strength of Adhesives (Rigid Material to Rigid Material)".

[0003] As is well known, thrust strength is very crucial for the use effect of adhesives. Bonding failure problems due to inappropriate adhesive strength occur frequently, posing great quality hazards. Therefore, it is extremely important to ensure the stability of data in thrust tests. The existing detection method is to use a dispenser to apply glue onto an aluminum sheet, control the gap with a broken cover glass, and then use tweezers to place the glass sheet onto the glue and directly cure it by light irradiation. Since most of the operations in the whole process need to be carried out manually, the test data is unstable, the discrete value is very high, and it cannot be reproduced and verified. It cannot be effectively evaluated in the performance detection and abnormal analysis and determination of adhesives.

[0004] Therefore, developing a detection method suitable for and capable of accurately testing the thrust strength of adhesives has become the need of those skilled in the art. Summary of the Invention

[0005] In view of the above problems of the prior art, the present invention provides a method for detecting the thrust strength of an adhesive.

[0006] The technical solution for the present invention to solve the above technical problems is as follows:

[0007] A method for detecting the thrust strength of an adhesive includes the following steps:

[0008] a. Place a spacer with a round hole and an anodic aluminum oxide sheet into the aluminum sheet slot of the mold, with the spacer above the anodic aluminum oxide sheet;

[0009] b. Use a dispenser to apply multiple glue dots of the same size into the round hole of the spacer, place the glass sheet into the glass sheet slot, place the pressure-holding sheet on the glass sheet, and then use a pressure-holding clamp to hold the pressure for 1 s;

[0010] c. Wait for the adhesive to cure;

[0011] d. Measure the thrust N of the cured adhesive;

[0012] e. Measure the area S of the glue dot;

[0013] The thrust strength F of the adhesive can be calculated by the following formula:

[0014] F = N / S.

[0015] Based on the above technical solution, the present invention can also be improved as follows:

[0016] Further, the thickness of the spacer is 0.1 - 0.2 mm.

[0017] Further, the spacer is made of stainless steel.

[0018] Further, the thickness of the glass sheet is 1 - 3 mm.

[0019] Further, in step d, a multi-functional thrust machine is used to measure the thrust of the cured adhesive.

[0020] Further, in step e, an optical microscope is used to measure the area of the glue dot.

[0021] Further, in step b, 5 glue dots are dispensed with a dispenser.

[0022] Further, in step b, a transparent pressure-holding sheet is used.

[0023] The beneficial effects of the present invention are as follows: The process is simplified and the operation is simple, making the detection process of the thrust strength of the adhesive standardized and consistent. The design of the spacer and the glass sheet slot can not only reduce the manual test error and standardize the test process, but also be reused to reduce unnecessary waste. The detection method of the present invention improves the accuracy and stability of the data and can effectively reduce the unqualified rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the front view of the mold of the present invention;

[0025] Figure 2 is the left view of the mold of the present invention;

[0026] Figure 3 is the top view of the mold of the present invention.

[0027] The reference numerals are recorded as follows: 1, spacer; 2, anodized aluminum sheet; 3, round hole; 4, screw; 5, glass sheet slot; 6, pressure-holding sheet; 7, pressure-holding clamp; 8, base. DETAILED DESCRIPTION OF THE INVENTION

[0028] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0029] A method for detecting the thrust strength of an adhesive, comprising the following steps:

[0030] a. Place the stainless steel spacer 1 with a round hole 3 and the anodic aluminum oxide sheet 2 into the aluminum sheet slot of the mold. The spacer 1 is above the anodic aluminum oxide sheet 2. The thickness of the spacer 1 is 0.1 - 0.2 mm, and in this embodiment, it is preferably 0.15 mm;

[0031] b. Use a dispensing machine to dispense 5 glue dots of the same size into the round hole 3 of the spacer 1. Place the glass sheet into the glass sheet slot 5, place the transparent pressure - maintaining sheet 6 on the glass sheet, and then use a pressure - maintaining clamp to maintain pressure for 1 s. The thickness of the glass sheet is 1 - 3 mm, and in this embodiment, the size of the glass sheet is 14 * 9 * 2 mm;

[0032] c. Wait for the adhesive to cure;

[0033] d. Use a multi - functional thrust machine to measure the thrust N of the cured adhesive;

[0034] e. Use an optical microscope to measure the area S of the glue dots;

[0035] The thrust strength F of the adhesive can be deduced through the following formula:

[0036] F = N / S.

[0037] For the mold structure adopted in the present invention, refer to Figures 1-3 , which includes a base 8. An aluminum sheet slot is provided on the base 8. The aluminum sheet slot horizontally penetrates the base 8. The glass sheet slot 5 is formed by two symmetrically arranged horizontal plates on both sides above the aluminum sheet slot. The horizontal plates are fixed to the base 8 by screws 4.

[0038] Using the mold of the present invention can fix the glass sheet through the unique shape of the mold, control the placement position of the glass sheet, and prevent the glass sheet from tilting and affecting the test results; and use the customized spacer 1 to control the adhesive layer thickness, further ensuring the stability of data and the standardization of operation. Using this mold effectively solves the problem of high discreteness in destructive inspection.

[0039] The test mechanism of the method for detecting the thrust strength of the adhesive in the present invention is: dispense glue dots of the same shape and size on the anodic aluminum oxide sheet 2, maintain pressure with a customized glass sheet (14 * 9 * 2 mm), use a customized stainless steel spacer 1 with a thickness of 0.15 mm (0.15 * 25 * 200 mm) to control the adhesive layer thickness, and calculate the thrust strength of the glue through the thrust value. The method of the present invention is simple and feasible, realizes the standardization and consistency of the test process, and the corresponding test data is accurate, which has a great impact on the application of the adhesive.

[0040] The thrust strength test method of this embodiment and the existing thrust strength test method were used to conduct thrust strength tests on UV adhesives commercially available from Debon Technology Co., Ltd., and the deviation rate of the thrust strength test structure of the samples was examined. The results are shown in Table 1 below.

[0041] Table 1 Adhesive thrust strength test results

[0042]

[0043] It can be seen from the data results in the above table that the standard deviation of the thrust strength of the adhesive measured by the thrust strength detection method of the present invention is low, and the data accuracy and stability are high.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for detecting the thrust strength of an adhesive, characterized in that It includes the following steps: a. Place the spacer with round holes and the anodic aluminum oxide sheet into the aluminum sheet slot of the mold, with the spacer above the anodic aluminum oxide sheet; b. Use a dotting machine to dot multiple adhesive dots of the same size in the round holes of the spacer, place the glass sheet into the glass sheet slot, place the pressure-holding sheet on the glass sheet, and then use a pressure-holding clamp to hold the pressure for 1 s; c. Wait for the adhesive to cure; d. Measure the thrust N of the cured adhesive; e. Measure the area S of the adhesive dots; The thrust strength F of the adhesive can be calculated through the following formula: F = N / S.

2. The detection method of the adhesive thrust strength according to claim 1, characterized in that, The thickness of the spacer is 0.1 - 0.2 mm.

3. The method for detecting the adhesive thrust strength according to claim 2, wherein The spacer is made of stainless steel.

4. The detection method of the adhesive thrust strength according to claim 3, characterized in that The thickness of the glass sheet is 1 - 3 mm.

5. The detection method of the adhesive thrust strength according to claim 4, characterized in that, In step d, a multi-functional thrust machine is used to measure the thrust of the cured adhesive.

6. The method for detecting the adhesive thrust strength according to claim 5, characterized in that, In step e, an optical microscope is used to measure the area of the adhesive dots.

7. The detection method for the adhesive thrust strength according to claim 6, characterized in that, In step b, 5 adhesive dots are dotted with the dotting machine.

8. The method for detecting the adhesive thrust strength according to claim 7, wherein, In step b, a transparent pressure-holding sheet is used.

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