CN116165134A - Method for testing peel strength between copper-clad plates - Google Patents
Method for testing peel strength between copper-clad plates Download PDFInfo
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- CN116165134A CN116165134A CN202211642103.9A CN202211642103A CN116165134A CN 116165134 A CN116165134 A CN 116165134A CN 202211642103 A CN202211642103 A CN 202211642103A CN 116165134 A CN116165134 A CN 116165134A
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- copper
- adhesive tape
- sided adhesive
- clad plate
- plate sample
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0429—Chucks, fixtures, jaws, holders or anvils using adhesive bond; Gluing
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a method for testing peel strength between copper-clad plates, which adopts a unique pasting method of combining a single-sided adhesive tape, a thin adhesive tape and a strong double-sided adhesive tape to fix a copper-clad plate sample to a carrying platform of a tensile machine, wherein the single-sided adhesive tape is convenient for keeping the surface of the carrying platform of the tensile machine clean, the thin adhesive tape enables the double-sided adhesive tape to be convenient for removal, and the double-sided adhesive tape can stabilize the copper-clad plate sample; the test method for the peel strength between the copper-clad plates can effectively and stably fix the copper-clad plate sample, can be used for quickly cleaning and repeatedly testing. The method for testing the peel strength between the copper-clad plates can be realized by using a small tensile machine, so that the efficiency of testing the peel strength between the copper-clad plates can be greatly improved, and the testing cost is reduced.
Description
Technical Field
The invention relates to a copper-clad plate detection technology, in particular to a method for testing peel strength between copper-clad plates.
Background
The copper clad laminate, called CCL for short, is prepared by impregnating reinforcing material with resin, baking at high temperature to obtain solid prepreg (PP), slicing, laminating one or more prepregs together, covering copper foil on one or both sides, and hot pressing. It is mainly used for manufacturing Printed Circuit Boards (PCBs). And pressing the prepregs for the printed circuit boards together to form the multilayer circuit board.
Most of the reinforcing materials of the current metal foil-clad laminated boards are electronic grade glass fiber cloth. In the manufacture of multi-layer laminates, the bond strength of the resin to the fiberglass cloth in the finished product is a very important property. In laminates as PCB raw materials, an important interface is the interface between the resin and the fiberglass cloth, which is susceptible to failure (delamination, caf.) during subsequent fabrication of the PCB or in the finished PCB. In order to strengthen the binding force between the resin and the glass fiber cloth, the current technology mainly realizes the strengthening of the binding force through a treating agent (silane coupling agent) on the surface of the glass fiber cloth and a treating agent in the resin.
After the finished product of the multi-layer board is manufactured, a method is needed for testing the peel strength between boards so as to judge the bonding strength of the resin and the glass fiber cloth in the finished product. The data reflected by the adhesive strength between the copper-clad plates has very important guiding effect on the raw materials and the process of the laminated board.
In terms of testing methods and conditions, most of the current tests imitate the copper foil peel strength test of the IPC (TM) 650.2.4.8 copper-clad plate, such as tensile speed and the like, but the specific method is quite different from the peel strength test, so that a more detailed method needs to be formulated according to actual conditions.
According to past experience in the industry, most tension type tests are performed on a tensile machine. The advantages of the large-scale tension machine are mainly reflected in accuracy. The tensile force machine is connected with computer software, so that the tensile force on each section of deformation can be checked in real time, and a more accurate numerical value can be obtained. One of the disadvantages is the relatively large number of operating steps. Since a tensile machine is generally used for various types of tests, each type of test requires a different component, an operator is often required to replace the component, resulting in an increase in the number of operation steps. In addition, large tensile machines are expensive from a cost standpoint, and are prone to mechanical problems in accuracy, difficult to maintain, and result in delayed testing.
In addition, the procedure for placing the samples was also quite different when the interlayer peel strength test was performed. In contrast to the peel test of copper foil, in the interlayer peel strength test, it is necessary to fix the sample to the flat plate in some manner, and the fixing force is not allowed to act on both sides of the sample. Thus, the use of glue to immobilize the sample is a common method. Different kinds of glue have different degrees of influence on the fixing strength, fixing time and cleaning difficulty of the sample. Liquid glues such as 502 suffer from long cure times and poor cleaning. The general double-sided tape may have insufficient adhesive force and may take a lot of time to clean the double-sided tape.
Disclosure of Invention
The invention aims to solve the technical problem of providing the test method for the peel strength between the copper-clad plates, which can effectively and stably fix the copper-clad plate sample, can quickly clean and repeatedly test, can greatly improve the test efficiency of the peel strength between the copper-clad plates, and reduces the test cost.
In order to solve the technical problems, the invention provides a method for testing the peel strength between copper-clad plates, which comprises the following steps:
s1, preparing a tension machine, wherein the tension machine is provided with a carrying platform, a clamp, a driving device and a force sensor; the upper surface of the carrying platform is provided with a carrying plane; the driving device is used for driving the clamp to move up and down and move left and right relative to the object carrying plane; the force sensor is used for detecting the tensile force applied to the clamp;
manufacturing a copper-clad plate sample, wherein the copper-clad plate sample is in a strip shape and is provided with an even number of layers of plates, a right section middle adjacent layer of the length direction of the copper-clad plate sample is formed into a right section upper layer and a right section lower layer separately, the middle section and the left section are kept together, and the length of the right section is 1/5-1/3 of that of the copper-clad plate sample;
s2, sticking a layer of rectangular single-sided adhesive tape on an object carrying plane of an object carrying platform; the length of the single-sided adhesive tape is larger than that of the copper-clad plate sample, and the width of the single-sided adhesive tape is larger than that of the copper-clad plate sample;
s3, sticking 2 pieces of fine adhesive tapes on the single-sided adhesive tape; a layer of double-sided adhesive tape is stuck on the single-sided adhesive tape and the 2 strips of thin adhesive tape, and the length directions of the single-sided adhesive tape, the thin adhesive tape and the double-sided adhesive tape are all left and right directions; the single-sided adhesive tape and the double-sided adhesive tape are identical in shape and overlap in position, the length of the thin adhesive tape is longer than that of the single-sided adhesive tape, and the width is 1/10-1/3 of that of the single-sided adhesive tape;
s4, fixing the right end of the upper layer of the right section of the copper-clad plate sample on a clamp of a tension machine, and integrally attaching the lower side surface of the copper-clad plate to the double-sided adhesive tape, so that the copper-clad plate sample is fixed on the carrying platform along the left-right direction;
s5, enabling the driving device to work to drive the clamp to move, enabling the right end of the upper layer of the right section of the copper-clad plate sample to be pulled upwards, and enabling the upper layer of the right section of the copper-clad plate sample to be perpendicular to the lower layer of the right section of the copper-clad plate sample;
s6, enabling the driving device to work to drive the clamp to vertically move upwards according to a set speed, and enabling the force sensor to detect vertical tensile force applied to the clamp and output an inter-plate peel strength value serving as a copper-clad plate sample to be tested currently;
s7, taking down the copper-clad plate sample tested at present, removing the double-sided tape and the thin tape, and if the test is continued, performing the step S3.
Preferably, in step S7, the copper-clad plate sample currently tested is taken down, and after the double-sided tape and the thin tape are removed, if the test is finished, the single-sided tape on the object carrying plane of the object carrying platform is removed.
Preferably, in step S6, the stable vertical tension force applied to the force sensor detection fixture is used as the peel strength value between boards of the copper-clad plate sample currently tested.
Preferably, the carrying plane of the carrying platform is rectangular, the length of the rectangular carrying plane is larger than that of the single-sided adhesive tape, and the width of the rectangular carrying plane is larger than that of the single-sided adhesive tape.
Preferably, the length of the thin adhesive tape is 1.02-1.2 times of the length of the rectangular single-sided adhesive tape.
Preferably, the single-sided tape is a transparent tape.
Preferably, the copper-clad plate sample is 50mm long strip-shaped with the length of 12.7 mm.
Preferably, the set speed is 50.8mm/min.
Preferably, a blade or a shovel is used for separating the middle adjacent layer of the right section of the length direction of the copper-clad plate sample.
According to the method for testing the peel strength between the copper-clad plates, disclosed by the invention, the copper-clad plate sample is fixed on the carrying platform of the tensile machine by adopting a unique pasting method of combining the single-sided adhesive tape, the thin adhesive tape and the strong double-sided adhesive tape, the single-sided adhesive tape is convenient for keeping the surface of the carrying platform of the tensile machine clean, the thin adhesive tape enables the double-sided adhesive tape to be convenient to remove, and the double-sided adhesive tape can be used for stabilizing the copper-clad plate sample; the test method for the peel strength between the copper-clad plates can effectively and stably fix the copper-clad plate sample, can be used for quickly cleaning and repeatedly testing. The method for testing the peel strength between the copper-clad plates can be realized by using a small tensile machine, so that the efficiency of testing the peel strength between the copper-clad plates can be greatly improved, and the testing cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the following brief description of the drawings is given for the purpose of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without the need for inventive work for a person skilled in the art.
Fig. 1 is a flowchart of an embodiment of a method for testing peel strength between copper clad laminate plates according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, the method for testing the peel strength between copper-clad plates comprises the following steps:
s1, preparing a tension machine, wherein the tension machine is provided with a carrying platform, a clamp, a driving device and a force sensor; the upper surface of the carrying platform is provided with a carrying plane; the driving device is used for driving the clamp to move up and down and move left and right relative to the object carrying plane; the force sensor is used for detecting the tensile force applied to the clamp;
manufacturing a copper-clad plate sample, wherein the copper-clad plate sample is in a strip shape and is provided with an even number of layers of plates, a right section middle adjacent layer of the length direction of the copper-clad plate sample is formed into a right section upper layer and a right section lower layer separately, the middle section and the left section are kept together, and the length of the right section is 1/5-1/3 of that of the copper-clad plate sample;
s2, sticking a layer of rectangular single-sided adhesive tape on an object carrying plane of an object carrying platform; the length of the single-sided adhesive tape is larger than that of the copper-clad plate sample, and the width of the single-sided adhesive tape is larger than that of the copper-clad plate sample;
s3, sticking 2 pieces of fine adhesive tapes on the single-sided adhesive tape; a layer of double-sided adhesive tape is stuck on the single-sided adhesive tape and the 2 strips of thin adhesive tape, and the length directions of the single-sided adhesive tape, the thin adhesive tape and the double-sided adhesive tape are all left and right directions; the single-sided adhesive tape and the double-sided adhesive tape are identical in shape and overlap in position, the length of the thin adhesive tape is longer than that of the single-sided adhesive tape, and the width is 1/10-1/3 of that of the single-sided adhesive tape;
s4, fixing the right end of the upper layer of the right section of the copper-clad plate sample on a clamp of a tension machine, and integrally attaching the lower side surface of the copper-clad plate to the double-sided adhesive tape, so that the copper-clad plate sample is fixed on the carrying platform along the left-right direction;
s5, enabling the driving device to work to drive the clamp to move, enabling the right end of the upper layer of the right section of the copper-clad plate sample to be pulled upwards, and enabling the upper layer of the right section of the copper-clad plate sample to be perpendicular to the lower layer of the right section of the copper-clad plate sample;
s6, enabling the driving device to work to drive the clamp to vertically move upwards according to a set speed, and enabling the force sensor to detect vertical tensile force applied to the clamp and output an inter-plate peel strength value serving as a copper-clad plate sample to be tested currently;
s7, taking down the copper-clad plate sample tested at present, removing the double-sided tape and the thin tape, and if the test is continued, performing the step S3.
According to the method for testing the peel strength between the copper-clad plates, a unique pasting method of a combination of a single-sided adhesive tape, a fine adhesive tape and a strong double-sided adhesive tape is adopted to fix a copper-clad plate sample to an object carrying platform of a tensile machine, the single-sided adhesive tape is convenient for keeping the surface of the object carrying platform of the tensile machine clean, the fine adhesive tape enables the double-sided adhesive tape to be convenient to remove, and the double-sided adhesive tape can stabilize the copper-clad plate sample; the test method for the peel strength between the copper-clad plates can effectively and stably fix the copper-clad plate sample, can be used for quickly cleaning and repeatedly testing. The method for testing the peel strength between the copper-clad plates can be realized by using a small tensile machine, so that the efficiency of testing the peel strength between the copper-clad plates can be greatly improved, and the testing cost is reduced.
Example two
Based on the method for testing peel strength between copper-clad plates in the first embodiment, in step S7, the copper-clad plate sample tested at present is taken down, and after the double-sided tape and the thin tape are removed, if the test is finished, the single-sided tape on the object carrying plane of the object carrying platform is removed.
Preferably, in step S6, the stable vertical tension force applied to the force sensor detection fixture is used as the peel strength value between boards of the copper-clad plate sample currently tested.
Preferably, the carrying plane of the carrying platform is rectangular, the length of the rectangular carrying plane is larger than that of the single-sided adhesive tape, and the width of the rectangular carrying plane is larger than that of the single-sided adhesive tape.
Preferably, the length of the thin adhesive tape is 1.02-1.2 times of the length of the rectangular single-sided adhesive tape.
Preferably, the single-sided tape is a transparent tape.
Preferably, the copper-clad plate sample is 50mm long and 12.7mm long, the area is small, the sample is convenient to duplicate and test repeatedly, and the waste is reduced.
Preferably, the set speed is 50.8mm/min.
Preferably, a blade or a shovel is used for separating the middle adjacent layer of the right section of the length direction of the copper-clad plate sample.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.
Claims (9)
1. The method for testing the peel strength between the copper-clad plates is characterized by comprising the following steps of:
s1, preparing a tension machine, wherein the tension machine is provided with a carrying platform, a clamp, a driving device and a force sensor; the upper surface of the carrying platform is provided with a carrying plane; the driving device is used for driving the clamp to move up and down and move left and right relative to the object carrying plane; the force sensor is used for detecting the tensile force applied to the clamp;
manufacturing a copper-clad plate sample, wherein the copper-clad plate sample is in a strip shape and is provided with an even number of layers of plates, a right section middle adjacent layer of the length direction of the copper-clad plate sample is formed into a right section upper layer and a right section lower layer separately, the middle section and the left section are kept together, and the length of the right section is 1/5-1/3 of that of the copper-clad plate sample;
s2, sticking a layer of rectangular single-sided adhesive tape on an object carrying plane of an object carrying platform; the length of the single-sided adhesive tape is larger than that of the copper-clad plate sample, and the width of the single-sided adhesive tape is larger than that of the copper-clad plate sample;
s3, sticking 2 pieces of fine adhesive tapes on the single-sided adhesive tape; a layer of double-sided adhesive tape is stuck on the single-sided adhesive tape and the 2 strips of thin adhesive tape, and the length directions of the single-sided adhesive tape, the thin adhesive tape and the double-sided adhesive tape are all left and right directions; the single-sided adhesive tape and the double-sided adhesive tape are identical in shape and overlap in position, the length of the thin adhesive tape is longer than that of the single-sided adhesive tape, and the width is 1/10-1/3 of that of the single-sided adhesive tape;
s4, fixing the right end of the upper layer of the right section of the copper-clad plate sample on a clamp of a tension machine, and integrally attaching the lower side surface of the copper-clad plate to the double-sided adhesive tape, so that the copper-clad plate sample is fixed on the carrying platform along the left-right direction;
s5, enabling the driving device to work to drive the clamp to move, enabling the right end of the upper layer of the right section of the copper-clad plate sample to be pulled upwards, and enabling the upper layer of the right section of the copper-clad plate sample to be perpendicular to the lower layer of the right section of the copper-clad plate sample;
s6, enabling the driving device to work to drive the clamp to vertically move upwards according to a set speed, and enabling the force sensor to detect vertical tensile force applied to the clamp and output an inter-plate peel strength value serving as a copper-clad plate sample to be tested currently;
s7, taking down the copper-clad plate sample tested at present, removing the double-sided tape and the thin tape, and if the test is continued, performing the step S3.
2. The method for testing the peel strength between copper-clad plates according to claim 1, wherein,
in step S7, the copper-clad plate sample tested at present is taken down, after the double-sided tape and the thin tape are removed, if the test is finished, the single-sided tape on the object carrying plane of the object carrying platform is removed.
3. The method for testing the peel strength between copper-clad plates according to claim 1, wherein,
in step S6, the stable vertical tension force applied to the force sensor detection clamp is used as the peel strength value between boards of the copper-clad plate sample currently tested.
4. The method for testing the peel strength between copper-clad plates according to claim 1, wherein,
the carrying plane of the carrying platform is rectangular, the length of the rectangular carrying plane is larger than that of the single-sided adhesive tape, and the width of the rectangular carrying plane is larger than that of the single-sided adhesive tape.
5. The method for testing the peel strength between copper-clad plates according to claim 1, wherein,
the length of the thin adhesive tape is 1.02-1.2 times of that of the rectangular single-sided adhesive tape.
6. The method for testing the peel strength between copper-clad plates according to claim 1, wherein,
the single-sided adhesive tape is transparent adhesive tape.
7. The method for testing the peel strength between copper-clad plates according to claim 1, wherein,
the copper-clad plate sample is 50mm long-strip-shaped with the diameter of 12.7 mm.
8. The method for testing the peel strength between copper-clad plates according to claim 1, wherein,
the set speed is 50.8mm/min.
9. The method for testing the peel strength between copper-clad plates according to claim 1, wherein,
and separating the middle adjacent layers of the right section of the length direction of the copper-clad plate sample by using a blade or a shovel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211642103.9A CN116165134A (en) | 2022-12-20 | 2022-12-20 | Method for testing peel strength between copper-clad plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211642103.9A CN116165134A (en) | 2022-12-20 | 2022-12-20 | Method for testing peel strength between copper-clad plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116165134A true CN116165134A (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211642103.9A Pending CN116165134A (en) | 2022-12-20 | 2022-12-20 | Method for testing peel strength between copper-clad plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116165134A (en) |
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2022
- 2022-12-20 CN CN202211642103.9A patent/CN116165134A/en active Pending
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