Sample preparation method for evaluating single-side performance of product

Abstract

The invention discloses a sample preparation method for evaluating single-side performance of a product. The sample preparation method comprises the following steps: S1, providing a test sample of which the performance is to be evaluated and drying the test sample; wherein the test sample has a first surface and a second surface which are opposite to each other, the first surface is used for performing product performance evaluation, and the second surface does not perform product performance evaluation; s2, sealant with a certain thickness is arranged on the second surface, the total area of the sealant is smaller than the area of the second surface, and the sealant is arranged along the periphery of the second surface; s3, a water blocking film is arranged on the sealant, the water blocking film is used for shielding the second surface, and the water blocking film is not in contact with the second surface; and S4, after curing, preparing an evaluation sample for evaluating the single-side performance of the product. According to the evaluation sample prepared by the invention, the sealant and the water-blocking film can be completely removed after the test process is completed, and the sealing material is fully removed, so that the original state of a glass product is reduced, and the accuracy of a performance evaluation result is not influenced.

Description

Technical Field

[0001] The invention relates to the field of detection technology, and in particular to a sample preparation method for evaluating single-side performance of a product. Background Art

[0002] Some glass products generally only need to evaluate the performance changes on one side during the testing process, but usually because the performance of both sides will change during the testing process, it will be impossible to accurately evaluate the performance changes on one side. Therefore, it is necessary to provide an evaluation sample for evaluating the performance of a single side of a glass product, so as to achieve the purpose of preparing to evaluate the performance changes on a single side of the glass. In this process, it is necessary to ensure that the performance of the side not being evaluated is stable.

[0003] At present, the commonly adopted technical means is to directly cover the non-evaluated surface of the product to be tested with a film to obtain an evaluation sample, and use the film to cover the side that is not subject to performance evaluation (non-evaluated surface) to achieve the purpose of protecting the non-evaluated surface from performance stability during the test process. However, this film covering method may cause performance changes due to insufficient film sealing or affect the accuracy of the test results due to residues removed from the film covering. Therefore, providing a sample preparation method that can effectively protect the non-evaluated surface without affecting the product performance evaluation test is of great practical significance to product performance evaluation. Summary of the invention

[0004] The purpose of the present invention is to propose a sample preparation method for evaluating the single-sided performance of a product in view of the problems that the existing method of directly covering the non-evaluated surface of a glass product with a film during the testing process may cause performance changes due to insufficient film sealing or the accuracy of the test results may be affected by the residue after the film covering is removed. The evaluation sample prepared by this method can avoid the above-mentioned problems caused by direct film covering.

[0005] To achieve the above object, the present invention is implemented by the following technical solutions:

[0006] The present invention provides a sample preparation method for evaluating the single-side performance of a product, the method comprising the following steps:

[0007] S1. Provide a test sample to be evaluated and dry it;

[0008] Wherein, the test sample has a first surface and a second surface opposite to each other, and the first surface is used for product performance evaluation, and the second surface is not used for product performance evaluation;

[0009] S2, disposing a sealant with a certain thickness on the second surface, wherein the total area of ​​the sealant is smaller than the area of ​​the second surface, and the sealant is disposed along four sides of the second surface;

[0010] S3, providing a water-blocking film on the sealant, wherein the water-blocking film is used to shield the second surface, and the water-blocking film is not in contact with the second surface;

[0011] S4. After curing, an evaluation sample for evaluating the single-sided performance of the product is prepared.

[0012] Furthermore, a sample preparation method for evaluating the single-sided performance of a product: the sample is coated glass.

[0013] Furthermore, a sample preparation method for evaluating the single-sided performance of a product: the drying temperature in step S1 is 50-100° C., and the drying time is 5-20 minutes.

[0014] Furthermore, a sample preparation method for evaluating the single-sided performance of a product: the thickness of the sealant is set to 5.0 to 20.0 mm.

[0015] Furthermore, a sample preparation method for evaluating the single-sided performance of a product: the material of the sealant is selected to be a sealant with good stability and resistance to high temperatures above 140°C.

[0016] Specifically, the sealant may be AB sealant or butyl sealant.

[0017] Furthermore, a sample preparation method for evaluating the single-sided performance of a product: Step S3, in an environment with a humidity not greater than 30% RH, bonding a water-blocking film on the sealant.

[0018] Furthermore, a sample preparation method for evaluating the single-sided performance of a product: the thickness of the water-blocking film is set to 0.05 to 2.0 mm.

[0019] Furthermore, a sample preparation method for evaluating the single-sided performance of a product: the water vapor permeability of the water-blocking film is less than 1.5 g / (m 2 ·24h).

[0020] Beneficial effects of the present invention:

[0021] The evaluation sample prepared by the method of the present invention uses a sealant and a water-blocking film to form a sealed structure on the non-evaluated surface of the glass product, which can fully block the influence of water vapor on the non-evaluated surface; at the same time, in the evaluation sample prepared by the present invention, the water-blocking film does not contact the non-evaluated surface (second surface) of the glass product, so it can be avoided that the removal of the water-blocking film residue affects the transmittance test result of the glass product and affects the performance evaluation. After the test process is completed, the evaluation sample prepared by the present invention can completely remove the sealant and the water-blocking film, and fully remove the sealing material, thereby restoring the original state of the glass product, and does not affect the accuracy of the performance evaluation results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic diagram of the structure of an evaluation sample prepared in Example 1 of the present invention;

[0024] Figure 2 This is a top view of the evaluation sample produced in Example 1 of the present invention.

[0025] Markings in the figure: 1-test sample, 2-sealant, 3-water-blocking film, 11-first surface, 12-second surface. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicating the position or positional relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0028] Example 1

[0029] This embodiment 1 provides a sample preparation method for evaluating the single-side performance of a product, the method comprising the following steps:

[0030] S1. Provide a test sample (coated glass) 1 of the performance to be evaluated, and dry it at 80°C for 10 minutes;

[0031] The test sample (coated glass) 1 has a first surface 11 and a second surface 12 opposite to each other, and the first surface 11 is used for product performance evaluation, while the second surface 12 is not used for product performance evaluation;

[0032] S2, a sealant 2 with a thickness of 10.0 mm is provided on the second surface 12, and the total area of ​​the sealant 2 is smaller than the area of ​​the second surface 12, and the sealant 2 is provided along the four sides of the second surface 12, and the sealant 2 is made of butyl rubber;

[0033] S3. In an environment where the humidity is not greater than 30% RH, a layer of water-blocking film 3 with a thickness of 1.0 mm is bonded to the sealant 2. The water-blocking film 3 is provided to shield the second surface 12. The water-blocking film 3 is not in contact with the second surface 12. The water vapor transmission rate of the water-blocking film 3 is less than 1.5 g / (m 2 24h);

[0034] S4. After curing, the evaluation sample for evaluating the single-sided performance of the product can be obtained. The structure of the obtained evaluation sample is as follows: Figures 1-2 shown.

[0035] Example 2

[0036] This embodiment 2 provides a sample preparation method for evaluating the single-side performance of a product, the method comprising the following steps:

[0037] S1. Provide a test sample (coated glass) 1 of the performance to be evaluated, and dry it at 60°C for 20 minutes;

[0038] The test sample (coated glass) 1 has a first surface 11 and a second surface 12 opposite to each other, and the first surface 11 is used for product performance evaluation, while the second surface 12 is not used for product performance evaluation;

[0039] S2, a sealant 2 with a thickness of 5.0 mm is provided on the second surface 12, and the total area of ​​the sealant 2 is smaller than the area of ​​the second surface 12, and the sealant 2 is provided along the four sides of the second surface 12, and the sealant 2 is AB glue;

[0040] S3. In an environment where the humidity is not greater than 30% RH, a layer of water-blocking film 3 with a thickness of 0.1 mm is bonded to the sealant 2. The water-blocking film 3 is provided to shield the second surface 12, and the water-blocking film 3 is not in contact with the second surface 12. The water vapor transmission rate of the water-blocking film 3 is less than 1.5 g / (m2 24h);

[0041] S4. After curing, an evaluation sample for evaluating the single-sided performance of the product can be prepared.

[0042] Comparative Example 1

[0043] The difference between Comparative Example 1 and Example 1 is that: Comparative Example 1 directly uses the same coated glass as Example 1 as the evaluation sample for the single-sided performance of the product, and Comparative Example 1 does not provide a water-blocking film.

[0044] Comparative Example 2

[0045] The difference between Comparative Example 2 and Example 1 is that Comparative Example 2 uses the same coated glass as Example 1, and directly applies the same water-blocking film as Example 1 on one side of the coated glass to obtain an evaluation sample.

[0046] test:

[0047] The evaluation samples obtained in the above-mentioned Example 1, Example 2, Comparative Example 1 and Comparative Example 2 were simultaneously placed in a PCT aging box to perform an accelerated aging experiment at a temperature of 121° C., a humidity of 100% RH and a time of 48 hours. After aging out of the box, the sealant and the water-blocking film in the evaluation samples of Example 1 and Example 2 were removed, and the water-blocking film in the evaluation sample of Comparative Example 2 was removed. Then, the appearance of each evaluation sample was observed, and the difference between the light transmittance of each evaluation sample and the light transmittance of the initial coated glass was detected. The specific results are shown in the following table:

[0048] Appearance Transmittance change Example 1 The glass coating surface is slightly dirty, the back is intact -0.11％ Example 2 The glass coating surface is slightly dirty, the back is intact -0.15％ Comparative Example 1 The glass coating surface is slightly dirty, and the back side is de-sodiumed and whitened -0.76％ Comparative Example 2 The glass coating surface is slightly dirty, the back is intact -0.46％

[0049] It can be seen from the test results in the above table that the evaluation experiment prepared by the method of the present invention can not only ensure the integrity of the coated surface of the evaluated glass after the aging experiment, but also the difference in light transmittance of the coated glass before and after the test is small, which can ensure the accuracy of the evaluation results. However, in Comparative Example 1, the coated glass is directly tested and evaluated, which can neither ensure the integrity of the coated surface of the coated glass after the test and evaluation, nor the difference in light transmittance before and after the test is large, and the performance change of the coated surface (single side) of the coated glass cannot be accurately evaluated. It can be seen from the test results of Comparative Example 2 that although it can ensure the integrity of the coated surface of the coated glass after the test and evaluation to a certain extent, the difference in light transmittance before and after the test is relatively large. The reason for this is that this direct film covering method is prone to residue or film traces after removing the water-blocking film, which is easy to affect the light transmittance, thereby affecting the accuracy of the evaluation results.

[0050] The evaluation sample prepared by the present invention has a water-blocking film that does not contact the coated glass, and the sealant provided can completely remove the sealant and the water-blocking film after the evaluation test process is completed, and the sealing material is fully removed, thereby restoring the original initial state of the glass product without affecting the accuracy of the performance evaluation results.

[0051] The above are preferred embodiments of the present invention and are only used to explain the present invention, not to limit the present invention. Any obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A sample preparation method for evaluating the single-sided performance of a product, characterized in that: The method comprises the following steps: S1. providing a test sample (1) of a performance to be evaluated and drying it; The test sample (1) has a first surface (11) and a second surface (12) opposite to each other, and the first surface (11) is used for product performance evaluation, and the second surface (12) is not used for product performance evaluation; S2. A sealant (2) having a certain thickness is arranged on the second surface (12), wherein the total area of ​​the sealant (2) is smaller than the area of ​​the second surface (12), and the sealant (2) is arranged along the periphery of the second surface (12); S3, providing a water-blocking film (3) on the sealant (2), wherein the water-blocking film (3) is used to shield the second surface (12), and the water-blocking film (3) is not in contact with the second surface (12); S4. After curing, an evaluation sample for evaluating the single-sided performance of the product is prepared.

2. A sample preparation method for evaluating the single-side performance of a product according to claim 1, characterized in that: The test sample (1) is coated glass.

3. A sample preparation method for evaluating single-side performance of a product according to claim 1, characterized in that: The drying temperature in step S1 is 50-100° C., and the drying time is 5-20 minutes.

4. A sample preparation method for evaluating single-side performance of a product according to claim 1, characterized in that: The thickness of the sealant (2) is set to 5.0-20.0 mm.

5. A sample preparation method for evaluating single-side performance of a product according to claim 1 or 4, characterized in that: The material of the sealant (2) is a sealant with good stability and high temperature resistance above 140°C.

6. A sample preparation method for evaluating single-side performance of a product according to claim 1, characterized in that: Step S3: in an environment with a humidity not greater than 30% RH, bonding a water-blocking film (3) on the sealant (2).

7. A sample preparation method for evaluating single-side performance of a product according to claim 1, characterized in that: The thickness of the water-blocking film (3) is set to 0.05-2.0 mm.

8. A sample preparation method for evaluating single-side performance of a product according to claim 1, characterized in that: The water vapor permeability of the water-blocking film (3) is less than 1.5 g / (m 2 ·24h).

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