Sample and tool structure for roller stripping test
By setting isolation grooves and non-peeling layer fixing holes in the composite material specimens, the problems of specimen bending and secondary processing in the roller peel test are solved, achieving the effects of low-difficulty processing, high yield and simplified sample loading.
Patent Information
- Application Number
- CN202520232710.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-13
AI Technical Summary
In existing composite material roller peel tests, the sample is prone to bending when the peeled layer separates from the non-peeled layer, and secondary processing and sample loading are required, resulting in high processing difficulty and low yield.
A sample structure is designed, including an isolation groove between the peeling layer and the non-peeling layer. Fixing holes are provided in the non-peeling area to avoid pre-peeling and fix directly on the non-peeling layer. Combined with the tooling structure, the sample is fixed to the back plate through the fixing structure.
It reduced the difficulty of sample processing, increased the yield rate, simplified the sample loading process, and improved testing efficiency and accuracy.
Smart Images
Figure CN223623939U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of composite material testing technology, and in particular to a sample and tooling structure for roller peel testing. Background Technology
[0002] Composite materials are materials with novel properties composed of two or more materials with different properties, combined through physical or chemical methods. Because composite materials contain a variety of materials with different properties, the bonding strength between the layers is a crucial parameter affecting their performance. Currently, the interlayer bonding strength of composite materials is mostly tested using the roller peel strength test method. In this test, the sample is placed on a roller peel strength testing machine, and the roller moves vertically, separating the peeled layer from the non-peeled layer, thus obtaining the peel strength of the sample.
[0003] To improve the accuracy of test results and prevent the sample from bending during the peel test, reinforcing material needs to be adhered to the non-peel layer of the sample. However, some materials are difficult to bond firmly to the reinforcing material due to their material properties. To ensure the sample is securely fixed to the reinforcing material, screw fixing can be used, which requires fixing holes in the sample. To maintain the integrity of the peel layer and avoid damage to it, the sample needs to be pre-peeled after preparation to separate the peel layer from the non-peel layer. Then, fixing holes are made in the non-peel layer, and screws or bolts are passed through these fixing holes to fix the sample to the reinforcing material. However, this method requires secondary processing and secondary loading of the sample, which can easily cause the peel layer to break, resulting in high processing difficulty and low sample yield. Utility Model Content
[0004] To address the aforementioned technical problems, this application provides a sample for roller peeling tests, which has the advantages of low processing difficulty, high yield, and convenient sample loading.
[0005] According to a first aspect of this application, a specimen for a roller peel test is provided, the specimen including a test section for performing a roller peel test;
[0006] The test section includes a peeling layer and a non-peeling layer stacked together. The peeling layer includes a peeling region and non-peeling regions disposed on both sides of the peeling region.
[0007] An isolation groove is provided between the peeled area and the non-peeled area, and the depth of the isolation groove matches the thickness of the peeling layer.
[0008] Along the length of the sample, the non-peeled area is provided with a plurality of fixing holes at intervals.
[0009] In some embodiments of this application, the sample further includes:
[0010] A clamping part is provided at one end of the testing part and is used for clamping by the roller peeling tester fixture;
[0011] A partition groove is provided between the clamping part and the testing part, and the depth of the partition groove matches the thickness of the non-peeling layer.
[0012] In some embodiments of this application, the distance between the fixing hole near one end of the clamping part and one end of the testing part is 4-5 mm.
[0013] In some embodiments of this application, the spacing between adjacent fixing holes is 20-30 mm or an integer multiple thereof;
[0014] The spacing between adjacent fixing holes is set according to a preset rule, which includes gradually increasing, gradually decreasing, or a first spacing and a second spacing arranged alternately, wherein the first spacing and the second spacing are different.
[0015] In some embodiments of this application, the diameter of the fixing hole is 3-6 mm.
[0016] In some embodiments of this application, the width of the non-stripped region is 8-15 mm.
[0017] According to a second aspect of this application, a tooling structure for a roller peel test is provided, including a back plate, a plurality of fixing structures and a sample as described above;
[0018] Multiple fixing structures pass through multiple fixing holes to fix the sample to the back plate.
[0019] In some embodiments of this application, the fixing structure includes a fastener that passes through the fixing hole to fix the sample to the back plate.
[0020] In some embodiments of this application, a connecting post is provided on the back plate;
[0021] The plurality of the fixing structures pass through the plurality of fixing holes and are connected to the connecting post.
[0022] In some embodiments of this application, the back plate is a metal back plate.
[0023] The technical solution provided in this application may include the following beneficial effects:
[0024] This application allows for the direct setting of fixing holes in the non-peeled area of the peeling layer and the non-peeled layer itself, eliminating the need for pre-peeling of the sample and preventing damage to the peeling area. This effectively reduces sample preparation difficulty, increases sample yield, and makes sample loading more convenient, thereby improving testing efficiency.
[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0027] Figure 1 This is a schematic diagram of the structure of a sample from one perspective, according to an exemplary embodiment.
[0028] Figure 2 This is a schematic diagram of the structure of a sample from another perspective, according to an exemplary embodiment.
[0029] Figure 3 This is a schematic diagram of the structure of the back panel according to an exemplary embodiment.
[0030] Figure Labels
[0031] 1. Testing section; 11. Peeling layer; 111. Peeling area; 112. Non-peeling area; 113. Isolation groove; 114. Fixing hole; 12. Non-peeling layer; 2. Clamping section; 21. Separation groove; 3. Back plate; 4. Connecting post. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.
[0033] This application provides a sample for a roller peel test. The sample includes a test section for performing the roller peel test. The test section includes a peeling layer and a non-peeling layer stacked together. The peeling layer includes a peeling area and non-peeling areas disposed on both sides of the peeling area. An isolation groove is provided between the peeling area and the non-peeling area, and the depth of the isolation groove matches the thickness of the peeling layer. Along the length of the sample, multiple fixing holes are spaced apart in the non-peeling area. During the peel test, the peeling area is the area to be peeled, while the non-peeling area does not need to be peeled. Therefore, fixing holes can be directly set in the non-peeling area and the non-peeling layer of the peeling layer, without pre-peeling the sample and without damaging the peeling area. This design reduces the sample processing difficulty, increases the yield, and facilitates sample loading.
[0034] The specific embodiments described below are intended to help those skilled in the art understand this embodiment, but this embodiment is not limited to the specific embodiments described below.
[0035] like Figure 1 As shown, an exemplary embodiment of this application provides a sample for a roller peel test. The sample includes a test section 1 for performing a roller peel test. The test section 1 includes a peeling layer 11 and a non-peeling layer 12 stacked together. The peeling layer 11 includes a peeling area 111 and non-peeling areas 112 disposed on both sides of the peeling area 111. An isolation groove 113 is provided between the peeling area 111 and the non-peeling area 112, and the depth of the isolation groove 113 matches the thickness of the peeling layer 11. Along the length direction of the sample, a plurality of fixing holes 114 are provided at intervals in the non-peeling area 112.
[0036] The sample used for the roller peel test has a multi-layer composite structure, therefore it has at least two layers, including a peeling layer 11 and a non-peeling layer 12. The peeling layer 11 is a flexible material used for the peel test. In related technologies, to avoid damaging the peeling layer 11, the sample needs to be pre-peeled to separate the peeling layer 11 from the non-peeling layer 12. In this embodiment, Figure 1 In the process, the sample is located on one side of the peeling surface. The peeling layer 11 includes a peeling area 111 and a non-peeling area 112. The peeling area 111 and the non-peeling area 112 are located on the same horizontal plane and are separated by an isolation groove 113. When performing a peeling test, the peeling area 111 is the area to be peeled, while the non-peeling area 112 does not need to be peeled. Therefore, fixing holes 114 can be directly set in the non-peeling area 112 and the non-peeling layer 12 of the peeling layer 11. Pre-peeling of the sample is not required, and the peeling area 111 will not be damaged. This setting can reduce the sample processing difficulty, improve the yield, and facilitate sample loading.
[0037] In this embodiment, the length of the isolation groove 113 can be set according to the length of the peel test. For example, if the length of the peel test sample is 100mm, the length of the isolation groove 113 is also set to 100mm to ensure the separation between the peeled area 111 and the non-peeled area 112. The number of fixing holes 114 is not limited and can be two, three, etc.
[0038] In one embodiment, such as Figure 2 As shown, the sample also includes a clamping part 2, which is disposed at one end of the testing part 1 and is used for clamping by the roller peel tester fixture; a partition groove 21 is provided between the clamping part 2 and the testing part 1, and the depth of the partition groove 21 matches the thickness of the non-peeling layer 12.
[0039] In this embodiment, Figure 2 In this test, the sample is positioned on the non-peeling side. A separation groove 21 is provided between the clamping part 2 and the testing part 1, and the depth of this groove 21 matches the thickness of the non-peeling layer 12. With this configuration, during the peel test, the sample is clamped by the fixture of the roller peel tester via the clamping part 2, facilitating the peeling of the peeling layer 11 from the non-peeling layer 12. The width of the clamping part 2 can be the same as or different from the width of the testing part 1, and can be set according to the width of the roller peel tester fixture.
[0040] In one embodiment, the distance between the fixing hole 114 near one end of the clamping part 2 and one end of the testing part 1 is 4-5 mm.
[0041] In this embodiment, the distance between the fixing hole 114 near one end of the clamping part 2 and one end of the testing part 1 is set to 4-5 mm, which can ensure the stability of the sample loading. For example, the distance between the fixing hole 114 near one end of the clamping part 2 and one end of the testing part 1 can be 4 mm, 4.5 mm, or 5 mm.
[0042] In one embodiment, the spacing between adjacent fixing holes 114 is 20-30 mm or an integer multiple thereof.
[0043] In this embodiment, the spacing between adjacent fixing holes 114 can be 20mm, 25mm, or 30mm, or it can be one or two times the above spacing value. For example, the spacing between adjacent fixing holes 114 can also be 40mm or 60mm.
[0044] The spacing between multiple adjacent fixing holes 114 can be the same, that is, the multiple fixing holes 114 are evenly arranged on the non-peeling area 112. For example, the spacing between multiple adjacent fixing holes 114 is 20mm. Understandably, the spacing between multiple adjacent fixing holes 114 can also be different.
[0045] In one embodiment, the spacing between adjacent fixing holes 114 is set according to a preset rule, which includes gradually increasing, gradually decreasing, or a first spacing and a second spacing arranged alternately, wherein the first spacing and the second spacing are different.
[0046] In this embodiment, the spacing between adjacent fixing holes 114 is set according to a preset rule, wherein the spacing can be, for example, 20-30mm and integer multiples thereof.
[0047] For example, in one embodiment, the preset rule can be gradually increasing. For instance, five fixing holes 114 are provided, and the spacing between the five fixing holes 114 along the direction from one end near the clamping part 2 to the other end away from the clamping part 2 is 20mm, 22mm, 24mm, and 26mm respectively.
[0048] In another embodiment, the preset rule can be a gradual decrease. For example, five fixing holes 114 are provided, and the spacing between the five fixing holes 114 along the direction from the end near the clamping part 2 to the end away from the clamping part 2 is 30mm, 27mm, 24mm and 21mm respectively.
[0049] In another embodiment, the preset rule is that a first spacing and a second spacing are arranged alternately, wherein the first spacing and the second spacing are different. For example, five fixing holes 114 are provided, and the spacing between the five fixing holes 114 along the direction from one end near the clamping part 2 to the other end away from the clamping part 2 is 20mm, 40mm, 20mm, and 40mm respectively.
[0050] Of course, the preset rules are not limited to the exemplary embodiments described above, and can also be in other ways. For example, five fixing holes 114 are provided, and the spacing between the five fixing holes 114 along the direction from the end near the clamping part 2 to the end away from the clamping part 2 is 20mm, 40mm, 40mm and 40mm respectively.
[0051] In one embodiment, the diameter of the fixing hole 114 is 3-6 mm.
[0052] In this embodiment, the diameter of the fixing hole 114 can be, for example, 3mm, 5mm, or 6mm.
[0053] In one embodiment, the width of the non-stripped region 112 is 8-15 mm.
[0054] In this embodiment, the width of the non-peeling region 112 needs to be greater than the diameter of the fixing hole 114. The width of the non-peeling region 112 can be set to 8mm, 10mm, or 15mm. For example, if the width of the sample for the peel test is 60mm, in this application, the overall width of the sample is 80mm, the width of the peeling region 111 is 60mm, and the width of the non-peeling region 112 is 10mm. This setting ensures that the effective peeling width is still 60mm, while also facilitating drilling without damaging the peeling region 111.
[0055] like Figure 3 As shown, an exemplary embodiment of this application provides a tooling structure for a roller peel test, including a back plate 3, a plurality of fixing structures and a sample as described in any of the above embodiments; the plurality of fixing structures pass through a plurality of fixing holes 114 to fix the sample on the back plate 3.
[0056] In this embodiment, by setting the back plate 3, bending of the sample can be avoided, thereby improving the accuracy of the test results. The sample can be easily loaded by passing the fixing structure through the fixing hole 114.
[0057] In one embodiment, the fixing structure includes a fastener that passes through a fixing hole 114 to fix the sample to the back plate 3.
[0058] In this embodiment, the fastener can be a screw or a bolt. The screw or bolt passes through the fixing hole 114 and can be screwed into the threaded hole of the back plate 3 to fix the sample on the back plate 3.
[0059] Understandably, the fixing structure can also be other structures, such as steel wire. In one embodiment, a connecting post 4 is provided on the back plate 3; multiple fixing structures pass through multiple fixing holes 114 and are connected to the connecting post 4.
[0060] In this embodiment, the fixing structure is a steel wire. After passing through the fixing hole 114, the steel wire can be wound around the connecting post 4 to fix the sample to the back plate 3. Insertion holes can be provided on both sides of the back plate 3, and the connecting post 4 is connected and fixed to the back plate 3 through these insertion holes.
[0061] In one embodiment, the back plate 3 is a metal back plate 3.
[0062] In this embodiment, the metal backing plate 3 has excellent strength and rigidity, which can effectively prevent the sample from bending.
[0063] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.
[0064] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. A specimen for a roller peel test, characterized in that, The sample includes a test section, which is used to perform a roller peel test; The test section includes a peeling layer and a non-peeling layer stacked together. The peeling layer includes a peeling region and non-peeling regions disposed on both sides of the peeling region. An isolation groove is provided between the peeled area and the non-peeled area, and the depth of the isolation groove matches the thickness of the peeling layer. Along the length of the sample, the non-peeled area is provided with a plurality of fixing holes at intervals.
2. The specimen for the roller peel test according to claim 1, characterized in that, The sample also includes: A clamping part is provided at one end of the testing part and is used for clamping by the roller peeling tester fixture; A partition groove is provided between the clamping part and the testing part, and the depth of the partition groove matches the thickness of the non-peeling layer.
3. The specimen for the roller peel test according to claim 2, characterized in that, The distance between the fixing hole near one end of the clamping part and one end of the testing part is 4-5mm.
4. The specimen for the roller peel test according to claim 1, characterized in that, The spacing between adjacent fixing holes is 20-30 mm or an integer multiple thereof; and / or The spacing between adjacent fixing holes is set according to a preset rule, which includes gradually increasing, gradually decreasing, or a first spacing and a second spacing arranged alternately, wherein the first spacing and the second spacing are different.
5. The specimen for the roller peel test according to claim 1, characterized in that, The diameter of the fixing hole is 3-6mm.
6. The specimen for the roller peel test according to claim 1, characterized in that, The width of the non-peeled area is 8-15mm.
7. A tooling structure for a roller peel test, characterized in that, Includes a back plate, multiple fixing structures, and a specimen as described in any one of claims 1-6; Multiple fixing structures pass through multiple fixing holes to fix the sample to the back plate.
8. The tooling structure for roller peeling test according to claim 7, characterized in that, The fixing structure includes a fastener that passes through the fixing hole to fix the sample to the back plate.
9. The tooling structure for roller peeling test according to claim 7, characterized in that, The back plate is provided with connecting posts; The plurality of the fixing structures pass through the plurality of fixing holes and are connected to the connecting post.
10. The tooling structure for roller peeling test according to claim 7, characterized in that, The back panel is a metal back panel.