Quality test method for adhesive b in two-component adhesive

Abstract

Provided in the present application is a quality test method for an adhesive B in a two-component adhesive. The method comprises the following steps: step S1, respectively mixing several adhesive B samples with an acceptable adhesive A, recording curing reliability results, determining whether the adhesive B samples are acceptable on the basis of the curing reliability results, performing fluidity, attachment state and viscosity tests on unacceptable adhesive B samples and acceptable adhesive B samples, and collecting test data; step S2, classifying and analyzing the collected test data, so as to obtain preset standards for an adhesive B; step S3, obtaining acceptability standards for the adhesive B and unacceptability standards for the adhesive B; and step S4, acquiring fluidity, attachment state and viscosity test data of the adhesive B, and comparing the fluidity, attachment state and viscosity test data of the adhesive B with the acceptability standards for the adhesive B, so as to obtain a quality test result. By means of the present application, the type of an abnormal adhesive can be quickly determined, and the lagging of existing test methods can also be avoided, thereby avoiding the hidden danger of abnormal reliability in a large batch, and reducing the time costs and economic costs for production and purchase.

Description

A quality detection method for two-component adhesive B glue

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on September 27, 2023, with application number 202311258471.8 and invention name “A quality detection method for two-component glue B glue”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of photovoltaic technology, and in particular to a quality detection method for two-component glue B glue. Background Art

[0004] Two-component adhesive is a mixture of two components: adhesive and hardener. The adhesive is usually referred to as "A" or "A-component adhesive," and the hardener is called "B" or "B-component adhesive." The advantage of two-component adhesive is its high strength, allowing it to be used for connections that require high forces. However, its disadvantages are that it requires mixing before use, requiring a high mixing ratio and a specified timeframe for application, otherwise it loses its adhesiveness.

[0005] In the current photovoltaic module industry, the potting compound used in PV module junction boxes is a two-component, room-temperature-curing organic silicone. Component A, the main ingredients of this potting compound, is hydroxyl-terminated polydimethylsiloxane and aluminum hydroxide, a white / black, mobile liquid. Component B, the hardener, is a transparent to slightly yellowish liquid composed mainly of polydimethylsiloxane, tetraethoxysilane, and aminopropyltriethoxysilane. Components A and B are mixed in appropriate proportions and poured into the junction box. Curing under appropriate temperature and humidity conditions protects the electronic devices and components within the box, providing thermal conductivity, insulation, flame retardancy, and waterproofing.

[0006] In the potting compound, component B plays a curing role. Due to factors such as production temperature, production time, and production formula abnormalities that may exist during the production process, the quality of the finished product of component B glue may be abnormal, which in turn affects the curing reliability of the A and B component glues after mixing.

[0007] The existing quality inspection method in the industry is to judge the quality of the A and B component adhesives based on the surface drying phenomenon after mixing them. Since this method needs to wait for the surface drying process of the mixed adhesive to be completed, this process takes about 15 minutes. During the waiting time, considering production efficiency, the production line needs to continue production. The existing inspection method has a strong lag, and if curing anomalies occur, it is impossible to accurately determine which component silicone has the anomaly. Not only can the inspection results not be obtained immediately, there is a risk of reliability anomalies in large quantities of components, and it will also lead to increased production and procurement costs.

[0008] Summary of the Invention

[0009] The purpose of this application is to overcome and supplement the deficiencies in the prior art and to provide a method for detecting the quality of a two-component adhesive B glue, in which the quality of the B component glue is detected separately before the A and B component glues are mixed. The detection steps are convenient and the detection results are accurate.

[0010] Among them, the two-component potting glue A is this glue. The main components of this glue are hydroxyl-terminated polydimethylsiloxane and aluminum hydroxide, supplemented by solvents and additives; the solvent can adjust the viscosity and fluidity of this glue, and the additive can improve the rheological properties of this glue and extend the life of the glue.

[0011] The two-component potting glue B is a hardener, and the main components of the hardener are polydimethylsiloxane, tetraethoxysilane and aminopropyltriethoxysilane.

[0012] After this glue and hardener are mixed in a certain proportion, that is, glue A and glue B are mixed, under appropriate temperature and humidity conditions, glue A and glue B react to form a strong chemical bond, thereby completing the curing of the two-component potting glue.

[0013] The technical solution adopted in this application is:

[0014] A method for detecting the quality of two-component adhesive B, comprising the following steps:

[0015] Step S1. Mix several samples of glue B with qualified glue A, ensuring that the ratio, weight, and degree of mixing of glue A and glue B in each mixed glue are consistent. Record the curing reliability results and determine whether the glue B samples are qualified based on the curing reliability results. Then, divide the glue B samples into two groups: those with abnormal quality and those with qualified quality. Perform flowability, adhesion, and viscosity tests on the abnormal and qualified glue B samples, respectively, and collect the test data.

[0016] Step S2. Classify and analyze the collected test data to obtain the corresponding relationship between the quality of B glue and its fluidity, adhesion state, and viscosity, thereby obtaining the preset standard of B glue;

[0017] Step S3. Providing a B-type glue sample, testing the fluidity, adhesion, and viscosity of the B-type glue sample, and comparing the test results with the preset B-type glue standard. Verifying the rationality of the preset B-type glue standard based on the comparison results. If the preset B-type glue standard is determined to be reasonable, the qualified and unqualified B-type glue standards are obtained.

[0018] Step S4. Provide glue B, obtain test data on the fluidity, adhesion state, and viscosity of glue B, and compare the test data on the fluidity, adhesion state, and viscosity of glue B with the qualified standards of glue B to obtain a quality test result.

[0019] Optionally, the quality inspection method of the two-component glue B, wherein: the test method for the fluidity and adhesion state of the glue sample B in step S1 is: pouring the glue sample B on the barrier, waiting for 30 seconds, and visually inspecting the adhesion of the glue on the surface of the barrier and the penetration of the glue on the barrier; the viscosity of the glue sample B is tested by a viscometer.

[0020] Optionally, in the method for detecting the quality of the two-component glue B, the weight of the glue B sample poured onto the barrier in step S3 is 9 to 11 g.

[0021] Optionally, in the method for quality inspection of the two-component adhesive B, the barrier is a polyester fabric with a thickness of 1 mm and a density of 1.38 to 1.40 g / cm 3 .

[0022] Optionally, in the quality inspection method for the two-component glue B, the qualification standard for glue B is: the glue liquid cannot completely penetrate the barrier, and residual glue adheres to the surface of the barrier; 50≤glue viscosity value≤100mPa·s.

[0023] Optionally, in the quality inspection method for the two-component glue B, the unqualified standard for glue B is: the glue completely penetrates the barrier, and there is no glue attached to the surface of the barrier, and 10<glue viscosity value<50mPa·s.

[0024] Advantages of this application:

[0025] (1) The quality detection method of the two-component glue B of the present application can quickly identify the type of abnormal glue by designing a detection method for separately detecting the quality of glue B before the two-component glue is mixed; it can also avoid the lag of existing detection methods, avoid the hidden dangers of large-scale reliability anomalies, and save time and economic costs in production and procurement.

[0026] (2) The quality inspection method of the two-component glue B of the present application characterizes the quality of glue B by liquid fluidity, liquid adhesion state and viscosity, which can shorten the average inspection time from 15 minutes to about 30 seconds, save inspection time and improve production efficiency. In addition, this inspection method has simple steps, accurate results and lower inspection costs. No additional inspection instruments are required, and personnel can master this inspection method with simple training. This method can also measure the quality of multiple barrels of component B glue at the same time, saving overall inspection time and further improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a photograph of the quality inspection results of the barrier placed on the ground in Example 1 of the present application.

[0028] FIG2 is a photograph of the quality inspection results of the barrier placed on the container in Example 1 of the present application.

[0029] FIG3 is a photograph of the quality inspection results of the barrier placed on the ground in Example 2 of the present application.

[0030] FIG4 is a photograph of the quality inspection results of the barrier placed on the container in Example 2 of the present application. DETAILED DESCRIPTION

[0031] The two-component potting glue A is this glue. The main components of this glue are hydroxyl-terminated polydimethylsiloxane and aluminum hydroxide, supplemented by solvents and additives; the solvent can adjust the viscosity and fluidity of this glue, and the additives can improve the rheological properties of this glue and extend the life of the glue.

[0032] The two-component potting glue B glue is a hardener, and the main components of the hardener are polydimethylsiloxane, tetraethoxysilane and aminopropyltriethoxysilane.

[0033] The present application will be further described below with reference to specific embodiments and accompanying drawings.

[0034] Example 1

[0035] A method for detecting the quality of two-component adhesive B, comprising the following steps:

[0036] Step S1. Mix several B glue samples and A glue of qualified quality respectively, ensure that the ratio, weight and mixing degree of A glue and B glue in each mixed glue are consistent, record the results of curing reliability, and judge whether the B glue sample is qualified based on the results of curing reliability. Then divide the B glue samples into two groups: B glue samples with abnormal quality and B glue samples with qualified quality. The B glue samples with abnormal quality and the B glue samples with qualified quality are tested for fluidity, adhesion state and viscosity. The test method for the fluidity and adhesion state of the B glue sample is: pour the B glue sample on the polyester fabric, wait for 30 seconds, and visually observe the adhesion of the glue on the surface of the polyester fabric and the penetration of the glue on the polyester fabric; the thickness is 1mm and the density is 1.38~1.40g / cm 3 The viscosity of the B glue sample was tested by a viscometer. The weight of the B glue sample poured on the polyester fabric was 10 g, and the test data was collected; the data are shown in Table 1;

[0037] Table 1

[0038] Step S2. Classify and analyze the collected test data to obtain the corresponding relationship between the quality of B glue and its fluidity, adhesion state, and viscosity, thereby obtaining the preset standard of B glue;

[0039] Step S3. Provide a B glue sample, test the fluidity, adhesion state, and viscosity of the B glue sample, and compare the test results with the preset standard of B glue. Verify the rationality of the preset standard of B glue based on the comparison result. When the preset standard of B glue is judged to be reasonable, obtain the qualified standard of B glue and the unqualified label of B glue; the qualified standard of B glue is: the glue liquid cannot completely penetrate the barrier, and residual glue adheres to the surface of the barrier; 50≤glue viscosity value≤100mPa·s; the unqualified standard of B glue is: the glue liquid completely penetrates the barrier, and there is no glue liquid adhered to the surface of the barrier, 10<glue viscosity value<50mPa·s.

[0040] Step S4. Glue B is provided, and test data for its fluidity, adhesion, and viscosity are obtained. Glue B exhibits poor fluidity and permeability. Within the 30-second test period, the glue cannot completely penetrate the barrier, and residual glue remains on the surface of the barrier. The glue viscosity is 60 mPa·s, indicating a qualified quality test result. Test diagrams are shown in Figures 1 and 2. Figure 1 shows the effect of placing the barrier on the ground, and Figure 2 shows the effect of placing the barrier on a container.

[0041] Example 2

[0042] A method for detecting the quality of two-component adhesive B, comprising the following steps:

[0043] Step S1. Mix several B glue samples and A glue of qualified quality respectively, ensure that the ratio, weight and mixing degree of A glue and B glue in each mixed glue are consistent, record the results of curing reliability, and judge whether the B glue sample is qualified based on the results of curing reliability. Then divide the B glue samples into two groups: B glue samples with abnormal quality and B glue samples with qualified quality. The B glue samples with abnormal quality and the B glue samples with qualified quality are tested for fluidity, adhesion state and viscosity. The test method for the fluidity and adhesion state of the B glue sample is: pour the B glue sample on the polyester fabric, wait for 30 seconds, and visually observe the adhesion of the glue on the surface of the polyester fabric and the penetration of the glue on the polyester fabric; the thickness is 1mm and the density is 1.38~1.40g / cm 3 The viscosity of the B glue sample was tested by a viscometer. The weight of the B glue sample poured on the polyester fabric was 10 g, and the test data was collected; the data are shown in Table 1;

[0044] Step S2. Classify and analyze the collected test data to obtain the corresponding relationship between the quality of B glue and its fluidity, adhesion state, and viscosity, thereby obtaining the preset standard of B glue;

[0045] Step S3. Providing a B-glue sample, testing its fluidity, adhesion, and viscosity, and comparing the test results with a preset standard for B-glue. Verifying the rationality of the preset standard for B-glue based on the comparison results. If the preset standard for B-glue is deemed reasonable, a pass standard for B-glue and a fail standard for B-glue are determined. The pass standard for B-glue is: the glue cannot completely penetrate the barrier, and residual glue adheres to the barrier surface; the glue viscosity is 50 ≤ ≤ 100 mPa·s; the fail standard for B-glue is: the glue completely penetrates the barrier, and no glue adheres to the barrier surface; the glue viscosity is 10 < 50 mPa·s.

[0046] Step S4. Glue B is provided, and test data on the fluidity, adhesion, and viscosity of glue B are obtained. Glue B has poor fluidity and permeability. Within the 30-second test time, no glue adheres to the surface of the barrier, and the glue completely penetrates the barrier. The glue viscosity is 40 mPa·s, and the quality test result is unqualified.

[0047] The quality detection method of the two-component glue B of the present application can quickly identify the type of abnormal glue by designing a detection method for separately detecting the quality of glue B before the two-component glue is mixed; it can also avoid the lag of existing detection methods, avoid the hidden dangers of large-scale reliability abnormalities, and save time and economic costs of production and procurement.

[0048] Characterizing the quality of component B glue by liquid fluidity, liquid adhesion state, and viscosity can shorten the average testing time from 15 minutes to approximately 30 seconds, saving testing time and improving production efficiency. Furthermore, this testing method features simple steps, accurate results, and lower testing costs. No additional testing equipment is required, and personnel can master this testing method with simple training. This method can also simultaneously measure the quality of multiple barrels of component B glue, saving overall testing time and further improving production efficiency.

[0049] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to examples, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, which should be included in the scope of the claims of the present application.

Claims

1. A quality detection method for two-component glue B, characterized in that: The following steps are involved: Step S1. Mix several B glue samples and A glue of qualified quality respectively, ensure that the ratio, weight and mixing degree of A glue and B glue in each mixed glue are consistent, record the results of curing reliability, and judge whether the B glue samples are qualified according to the results of curing reliability, then divide the B glue samples into two groups of B glue samples with abnormal quality and B glue samples with qualified quality, respectively conduct fluidity, adhesion state and viscosity tests on the B glue samples with abnormal quality and the B glue samples with qualified quality, and collect the test data; Step S2. Classify and analyze the collected test data to obtain the corresponding relationship between the quality of B glue and fluidity, adhesion state, and viscosity, thereby obtaining the preset standard of B glue; Step S3. Providing a B-glue sample, testing the fluidity, adhesion state, and viscosity of the B-glue sample, and comparing the test results with the preset standard of B-glue, verifying the rationality of the preset standard of B-glue based on the comparison results, and when the preset standard of B-glue is judged to be reasonable, obtaining the qualified standard of B-glue and the unqualified standard of B-glue; Step S4. Provide glue B, obtain test data on the fluidity, adhesion state, and viscosity of glue B, and compare the test data on the fluidity, adhesion state, and viscosity of glue B with the qualified standard of glue B to obtain a quality inspection result.

2. The quality detection method of two-component glue B according to claim 1, characterized in that: The test method for the fluidity and adhesion state of the B glue sample in step S1 is: pour the B glue sample on the barrier, wait for 30 seconds, and visually observe the adhesion of the glue on the barrier surface and the penetration of the glue on the barrier; the viscosity of the B glue sample is tested by a viscometer.

3. The quality detection method of two-component glue B according to claim 2, characterized in that: The weight of the B glue sample poured on the barrier was 9 to 11 g.

4. The quality detection method of two-component glue B according to claim 2, characterized in that: The barrier is polyester fabric with a thickness of 1mm and a density of 1.38-1.40g / cm 3 .

5. The quality detection method of two-component glue B according to claim 2, characterized in that: The qualification criteria for B glue in step S3 are: the glue liquid cannot completely penetrate the barrier, and residual glue adheres to the surface of the barrier; 50≤glue liquid viscosity value≤100mPa·s.

6. The quality detection method of two-component glue B according to claim 2, characterized in that: The unqualified standard for B glue is: the glue completely penetrates the barrier, and there is no glue attached to the surface of the barrier, 10<glue viscosity value<50mPa·s.

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