CN114089062A - Interface performance detection method and device - Google Patents
Interface performance detection method and device Download PDFInfo
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- CN114089062A CN114089062A CN202111346298.8A CN202111346298A CN114089062A CN 114089062 A CN114089062 A CN 114089062A CN 202111346298 A CN202111346298 A CN 202111346298A CN 114089062 A CN114089062 A CN 114089062A
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Abstract
The invention discloses an interface performance detection method and device, wherein the method comprises the following steps: firstly, arranging an electrode on the surface of epoxy glass fiber according to a preset distance, and then covering silicon rubber on the surface of the epoxy glass fiber to obtain a first interface; wherein the first interface is an interface formed between the silicon rubber and the epoxy glass fiber; applying a preset voltage on the electrode of the first interface to obtain a current change diagram; wherein the preset voltage is obtained by calculation according to the critical voltage; and finally, obtaining a power-resistance evaluation result of the first interface according to the current change diagram, and obtaining an interface performance detection result according to the power-resistance evaluation result. By adopting the embodiment of the invention, the precision of the detection of the performance of the silicone rubber/epoxy glass fiber interface can be improved.
Description
Technical Field
The invention relates to the technical field of material performance detection, in particular to a method and a device for detecting interface performance.
Background
The composite insulator has the advantages of convenient installation, light weight, high strength, pollution resistance, weather resistance and the like, and is widely applied to power transmission lines and railway lines. The composite insulator has a severe working environment and faces various natural aging factors, and the long-term stable operation capability of the composite insulator is closely related to the safety of a power grid. In the actual operation process, the composite insulator is found to be faced with the problems of heating, breakdown, even string breakage and the like, and the problems are related to the defects of an end interface or a sheath-core rod interface. The composite insulator has a slender structure, and a large-area interface is formed on the contact surface of the sheath and the core rod. Moreover, the composite insulator works in a high-voltage strong electric field environment, which puts high requirements on the electrical property and the aging resistance of a sheath-core rod interface. Because the composite insulator sheath material is silicon rubber and the core rod material is epoxy glass fiber, the performance of the silicon rubber/epoxy glass fiber interface represents the performance of the composite insulator sheath/core rod interface.
The existing methods for detecting the interface performance of the silicone rubber/epoxy glass fiber mainly comprise two types: one is a mechanical property detection method, which comprises an anatomical classification method and a compression shear test method; the other is a water diffusion test method, which comprises a load heating test after water boiling, a leakage current test and a test method of interface resistivity. The method for detecting the mechanical property of the interface is mainly a macroscopic detection method, and the average mechanical strength of the interface is detected. The water diffusion test method mainly detects the resistance of the interface to damp-heat aging and whether the defect of water penetration exists at the interface boundary. However, both the mechanical property detection method and the water diffusion test method belong to defect detection methods, and the electric resistance of the interface cannot be evaluated.
In summary, the existing interface performance detection method does not consider evaluation of the power resistance performance, and is not comprehensive enough, which finally results in low precision of the existing interface performance detection result.
Disclosure of Invention
The embodiment of the invention provides a method and a device for detecting interface performance, which improve the precision of detecting the interface performance of silicone rubber/epoxy glass fiber.
A first aspect of an embodiment of the present application provides an interface performance detection method, including:
after the electrode is arranged on the surface of the epoxy glass fiber according to the preset distance, covering silicon rubber on the surface of the epoxy glass fiber to obtain a first interface; wherein the first interface is an interface formed between the silicon rubber and the epoxy glass fiber;
applying a preset voltage on the electrode of the first interface to obtain a current change diagram; wherein the preset voltage is obtained by calculation according to the critical voltage;
and obtaining the power resistance evaluation result of the first interface according to the current change diagram, and obtaining the interface performance detection result according to the power resistance evaluation result.
In a possible implementation manner of the first aspect, after the electrode is disposed on the epoxy glass fiber surface according to a preset distance, the epoxy glass fiber surface is covered with silicon rubber to obtain a first interface, which specifically is:
arranging a plurality of electrodes on the surface of the epoxy glass fiber according to a preset distance; wherein the preset distance is a linear distance between every two electrodes;
and covering the surface of the epoxy glass fiber with an interface adhesive with a preset concentration, and then covering silicon rubber with a preset thickness to obtain a first interface.
In a possible implementation manner of the first aspect, a preset voltage is applied to the electrode of the first interface to obtain a current variation diagram, specifically:
the electrode includes: a first electrode and a second electrode;
and connecting the first electrode with the output end of a preset voltage source, and connecting the second electrode with the testing end of the preset voltage source to realize the application of a preset voltage on the electrode of the first interface.
In a possible implementation manner of the first aspect, the preset voltage is calculated according to a threshold voltage, and specifically:
after the critical voltage is obtained, calculating according to a preset proportion to obtain a preset voltage; the method comprises the following steps of obtaining a critical voltage:
applying a voltage that increases at a predetermined rate to the first electrode and the second electrode, and when it is determined that the first interface is failed, taking the voltage between the first electrode and the second electrode as a critical voltage and obtaining it.
In a possible implementation manner of the first aspect, the result of evaluating the electrical endurance of the first interface is obtained according to the current variation diagram, specifically:
according to the current change diagram, when the current change rate is larger than a preset value, the power resistance evaluation result of the first interface is excellent; when the current change rate is less than or equal to the preset value, the result of the electric resistance evaluation of the first interface is general.
In a possible implementation manner of the first aspect, the preset distance is 1 mm; the preset thickness is 3 mm.
A second aspect of the embodiments of the present application provides an interface performance detection apparatus, including: the device comprises a first forming module, a second forming module and a detecting module;
the first forming module is used for covering silicon rubber on the surface of the epoxy glass fiber after the electrode is arranged on the surface of the epoxy glass fiber according to a preset distance to obtain a first interface; wherein the first interface is an interface formed between the silicon rubber and the epoxy glass fiber;
the second forming module is used for applying a preset voltage on the electrode of the first interface to obtain a current change diagram; wherein the preset voltage is obtained by calculation according to the critical voltage;
the detection module is used for obtaining an interface performance detection result according to the power-resistance evaluation result after obtaining the power-resistance evaluation result of the first interface according to the current change diagram.
In a possible implementation manner of the second aspect, after the electrode is disposed on the epoxy glass fiber surface according to a preset distance, the epoxy glass fiber surface is covered with silicon rubber to obtain a first interface, which specifically is:
arranging a plurality of electrodes on the surface of the epoxy glass fiber according to a preset distance; wherein the preset distance is a linear distance between every two electrodes;
and covering the surface of the epoxy glass fiber with an interface adhesive with a preset concentration, and then covering silicon rubber with a preset thickness to obtain a first interface.
In a possible implementation manner of the second aspect, a preset voltage is applied to the electrode of the first interface to obtain a current variation diagram, specifically:
the electrode includes: a first electrode and a second electrode;
and connecting the first electrode with the output end of a preset voltage source, and connecting the second electrode with the testing end of the preset voltage source to realize the application of a preset voltage on the electrode of the first interface.
In a possible implementation manner of the second aspect, the preset voltage is calculated according to a threshold voltage, and specifically:
after the critical voltage is obtained, calculating according to a preset proportion to obtain a preset voltage; the method comprises the following steps of obtaining a critical voltage:
applying a voltage that increases at a predetermined rate to the first electrode and the second electrode, and when it is determined that the first interface is failed, taking the voltage between the first electrode and the second electrode as a critical voltage and obtaining it.
Compared with the prior art, the method and the device for detecting the interface performance provided by the embodiment of the invention comprise the following steps: firstly, arranging an electrode on the surface of epoxy glass fiber according to a preset distance, and then covering silicon rubber on the surface of the epoxy glass fiber to obtain a first interface; wherein the first interface is an interface formed between the silicon rubber and the epoxy glass fiber; applying a preset voltage on the electrode of the first interface to obtain a current change diagram; wherein the preset voltage is obtained by calculation according to the critical voltage; and finally, obtaining a power-resistance evaluation result of the first interface according to the current change diagram, and obtaining an interface performance detection result according to the power-resistance evaluation result.
The beneficial effects are that: according to the embodiment of the invention, a first interface is formed between the silicon rubber and the epoxy glass fiber by a method of internally arranging the electrode, so that the direction of electric field lines can be restrained; then, a preset voltage is applied to the electrode of the first interface, a strong electric field along the interface direction can be applied to the interface, so that a power resistance/electrical aging test can be carried out on the interface, a current change diagram is obtained, and a power resistance evaluation result of the first interface is generated. The embodiment of the invention can solve the problem that the existing interface performance detection method does not consider the evaluation of the electric resistance performance but is not comprehensive enough, and on the basis of the existing interface performance detection method, the electric resistance evaluation of the interface is used as a new reference index, so that the comprehensiveness of the interface performance detection method can be improved, and the precision of the silicon rubber/epoxy glass fiber interface performance detection can be improved.
In addition, the embodiment of the invention can also test and evaluate the field strength tolerance of the interface, thereby enriching the reference indexes of the interface performance detection method and further improving the comprehensiveness and the precision of the interface performance detection method.
Drawings
Fig. 1 is a schematic flow chart of a method for detecting interface performance according to an embodiment of the present invention;
FIG. 2 is a graph of the relationship between different interfaces and the instantaneous field strength of the interface failure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the electrode position relationship provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an interface performance detection apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, which is a schematic flow chart of an interface performance detection method provided in an embodiment of the present invention, the method includes steps S101 to S103:
s101: and after the electrode is arranged on the surface of the epoxy glass fiber according to the preset distance, covering silicon rubber on the surface of the epoxy glass fiber to obtain a first interface.
Wherein the first interface is an interface formed between the silicone rubber and the epoxy glass fiber.
In this embodiment, after the electrode is disposed on the epoxy glass fiber surface according to the preset distance, the epoxy glass fiber surface is covered with silicon rubber to obtain a first interface, which specifically includes:
arranging a plurality of electrodes on the surface of the epoxy glass fiber according to the preset distance; wherein the preset distance is a linear distance between every two electrodes;
and covering the surface of the epoxy glass fiber with an interface adhesive with a preset concentration, and then covering the silicon rubber with a preset thickness to obtain the first interface.
In an embodiment, before disposing the electrode on the surface of the epoxy glass fiber according to the predetermined distance, the method further includes: and (5) polishing the surface of the epoxy glass fiber.
S102: and applying a preset voltage on the electrode of the first interface to obtain a current change diagram.
The preset voltage is obtained by calculation according to the critical voltage. The preset voltage is as follows: alternating current or direct current with the critical voltage of 70-90%.
In this embodiment, the applying a preset voltage to the electrode of the first interface obtains a current variation diagram, specifically:
the electrode includes: a first electrode and a second electrode;
and connecting the first electrode with the output end of a preset voltage source, and connecting the second electrode with the testing end of the preset voltage source to realize that the preset voltage is applied to the electrode of the first interface.
The preset voltage source, the output end of the preset voltage source and the test section are all components of a preset test circuit, and the preset test circuit further comprises a switch, a resistor, an ammeter and other common devices, which are not described herein again.
In a specific embodiment, the preset voltage is calculated according to a threshold voltage, and specifically includes:
after the critical voltage is obtained, calculating according to a preset proportion to obtain a preset voltage; wherein, the obtaining the critical voltage specifically includes:
applying a voltage that increases at a preset rate to the first electrode and the second electrode, and when it is determined that the first interface is failed, taking the voltage between the first electrode and the second electrode as the critical voltage and obtaining it.
Specifically, when the interface fails, a sound is generated, and a discharge phenomenon of a flash is generated between the electrodes. This is because when the potential difference between the electrodes at the interface is too large, the field strength between the electrodes exceeds the tolerance of the interface, a strong discharge phenomenon occurs between the electrodes, which destroys the interface structure on the arc path and finally forms a through channel, with the result that the interface fails and loses the tolerance to high voltage.
Experiments prove that the critical voltage (namely the interface failure voltage) can be accurately judged when the voltage increase rate is less than 3 kV/min. When the control voltage is increased, the steadily increased voltage can be obtained in a preset mode of a system program, and the constant speed adjustment can be performed manually. And combining the timeliness and the accuracy, and obtaining the preset speed from 1-3 KV/min.
S103: and obtaining the power resistance evaluation result of the first interface according to the current change diagram, and obtaining the interface performance detection result according to the power resistance evaluation result.
In this embodiment, the obtaining of the evaluation result of the electrical endurance of the first interface according to the current variation diagram specifically includes:
according to the current change diagram, when the current change rate is larger than a preset value, the power resistance evaluation result of the first interface is excellent; when the current change rate is less than or equal to the preset value, the power-resistance evaluation result of the first interface is general.
In a specific embodiment, the predetermined distance is 1 mm; the preset thickness is 3 mm. Wherein, for the high-temperature vulcanized silicone rubber, the breakdown voltage is in the order of 10 kV/mm. The preset thickness is set to 3mm, not only because the thickness of the composite insulator shed sheath silicone rubber is generally 3mm, but also a minimum threshold value is set in consideration of the possible need of the electrical resistance/electrical aging test to prevent the silicone rubber from being punctured at a high voltage.
Preferably, the interface performance detection method provided by the embodiment of the present invention can also detect the electric field strength endured by the interface performance, and the specific process is as follows:
and S1, manufacturing a pair of electrodes for placing at the interface, wherein the electrode material is pure copper, and the thickness of the electrodes is 30 um.
And S2, fixing the electrodes on the epoxy glass fiber with a flat surface, enabling the two electrodes to be in a straight line, and enabling the shortest distance between the edges of the first electrode and the second electrode to be 1mm (namely the preset distance).
S3, smearing interface adhesives with preset concentration on the surfaces of the epoxy glass fibers and the electrodes, and hot-pressing silicon rubber with the thickness of 3mm (namely the preset thickness) on the surfaces to form a first interface between the silicon rubber and the epoxy glass fibers, wherein the first interface is used as a first sample.
And S4, connecting the first electrode with the output end of a high-voltage power supply (namely a preset voltage source), connecting the second electrode with the testing end of the high-voltage power supply (namely the preset voltage source), applying alternating voltage with the increasing rate of 1kV/10S (namely the voltage with the increasing rate of the preset voltage) on the two electrodes, and observing the condition of the first sample.
S5, when abnormal flash occurs near the first/second electrodes and abnormal sound is heard, when it is determined that the first sample interface is failed, the voltage between the first electrode and the second electrode is acquired as the critical voltage (i.e., interface failure voltage).
And S6, calculating the first interface failure field strength corresponding to the failure voltage through simulation software. The method specifically comprises the following steps: a structural model formed by epoxy glass fiber, electrodes and silicon rubber is established on simulation software, and potential difference is applied to the electrodes, so that the electric field intensity between the electrodes can be simulated and calculated. And substituting the value of the critical voltage, and calculating to obtain the interface failure field strength.
S7, re-sampling according to the steps in S1-S3 to produce a second sample, but before applying the interface adhesive in S3, the interface adhesive was diluted to 80 vol.% with absolute ethanol. A second interfacial failure field strength for the second specimen is then calculated in steps S4-S6.
S8, re-sampling following the procedure in S1-S3 to produce a third sample, but before applying the interface adhesive in S3, the interface adhesive was diluted to 50 vol.% using absolute ethanol. The third interfacial failure field strength of the third sample was then calculated as per steps S4-S6.
S9, the sample is prepared again according to the steps of S1-S3, and a fourth sample is generated, but before the interface adhesive is coated in S3, the interface adhesive is replaced by absolute ethyl alcohol. The fourth interfacial failure field strength for the fourth sample was then calculated as per steps S4-S6.
S10, generating a relation graph of different interfaces and the interface failure field intensity according to the first interface failure field intensity, the second interface failure field intensity, the third interface failure field intensity and the fourth interface failure field intensity obtained in the S6-S9, obtaining the field intensity tolerance of the interfaces (namely the field intensity tolerance of different interfaces), and obtaining the interface performance detection result according to the field intensity tolerance of the interfaces.
The first sample manufactured in S1 and the second sample manufactured in S7-S9 mean that 4 identical epoxy glass fiber plates were provided with the same electrodes, and then an interface adhesive agent having different coupling agent contents was applied and a silicone rubber was hot-pressed to form an interface. 4 samples are prepared after the content change of the effective components of the interface adhesive is controlled and other factors are controlled to be completely the same. Wherein, the content of the coupling agent is the content of the effective components of the interface bonding agent.
Further, an interface performance detection result is obtained according to the field strength tolerance/electric resistance evaluation result of the interface, and specifically comprises the following steps: and after obtaining the defect test result of the interface, comprehensively calculating according to a preset weight value by combining the field intensity tolerance and the electric resistance evaluation result to obtain the interface performance test result.
To further illustrate the field strength tolerance of the interface, please refer to fig. 2, fig. 2 is a graph illustrating the relationship between different interfaces and the transient failure field strength of the interface according to an embodiment of the present invention.
Wherein, the abscissa of fig. 2 represents samples corresponding to different coupling agent contents (i.e., contents of effective components of the interface adhesive), and the ordinate represents breakdown field strengths (i.e., interface failure field strengths) corresponding to different interfaces. An interface with the coupling agent content of 100% is a first sample, an interface with the coupling agent content of 80% is a second sample, an interface with the coupling agent content of 50% is a third sample, and an interface with the coupling agent content of 0% is a fourth sample. The field intensity tolerance degrees of the first sample, the second sample, the third sample and the fourth sample in one-to-one correspondence are respectively a first interface failure field intensity, a second interface failure field intensity, a third interface failure field intensity and a fourth interface failure field intensity. From fig. 2, it can be obtained that the first interface failure field strength, the second interface failure field strength, the third interface failure field strength and the fourth interface failure field strength are in a decreasing relationship, that is, the higher the content of the coupling agent (i.e., the content of the effective component of the interface adhesive) is, the higher the field strength tolerance of the generated interface is.
To further illustrate the specific position of the electrode on the surface of the epoxy glass fiber, please refer to fig. 3, where fig. 3 is a schematic diagram of the position relationship of the electrode according to an embodiment of the present invention.
Where all numbers shown in figure 3 are in units of millimeters mm. As can be seen from fig. 3, the metal electrode is located on the surface of the epoxy glass fiber board, and the size of the epoxy glass fiber board is 100mm x 100 mm. One electrode was designed as a "tip" electrode in order to increase the electric field strength at the tip, the shortest distance between the "tip" electrode and the other electrode being 1 mm.
For further explanation of the interface performance detection apparatus, please refer to fig. 4, where fig. 4 is a schematic structural diagram of an interface performance detection apparatus according to an embodiment of the present invention, including: a first forming module 401, a second forming module 402, a detection module 403.
The first forming module 401 is configured to, after the electrode is disposed on the surface of the epoxy glass fiber according to a preset distance, cover the surface of the epoxy glass fiber with silicon rubber to obtain a first interface; wherein the first interface is an interface formed between the silicone rubber and the epoxy glass fiber.
In this embodiment, after the electrode is disposed on the epoxy glass fiber surface according to the preset distance, the epoxy glass fiber surface is covered with silicon rubber to obtain a first interface, which specifically includes:
arranging a plurality of electrodes on the surface of the epoxy glass fiber according to the preset distance; wherein the preset distance is a linear distance between every two electrodes;
and covering the surface of the epoxy glass fiber with an interface adhesive with a preset concentration, and then covering the silicon rubber with a preset thickness to obtain the first interface.
The second forming module 402 is configured to apply a preset voltage to the electrode of the first interface to obtain a current variation graph; the preset voltage is obtained by calculation according to the critical voltage.
In this embodiment, the applying a preset voltage to the electrode of the first interface obtains a current variation diagram, specifically:
the electrode includes: a first electrode and a second electrode;
and connecting the first electrode with the output end of a preset voltage source, and connecting the second electrode with the testing end of the preset voltage source to realize that the preset voltage is applied to the electrode of the first interface.
In a specific embodiment, the preset voltage is calculated according to a threshold voltage, and specifically includes:
after the critical voltage is obtained, calculating according to a preset proportion to obtain a preset voltage; wherein, the obtaining the critical voltage specifically includes:
applying a voltage that increases at a preset rate to the first electrode and the second electrode, and when it is determined that the first interface is failed, taking the voltage between the first electrode and the second electrode as the critical voltage and obtaining it.
The detecting module 403 is configured to obtain a power-durability evaluation result of the first interface according to the current variation diagram, and then obtain an interface performance detecting result according to the power-durability evaluation result.
According to the embodiment of the invention, firstly, after the electrode is arranged on the surface of the epoxy glass fiber through the first forming module 401 according to the preset distance, the surface of the epoxy glass fiber is covered with silicon rubber to obtain a first interface; wherein the first interface is an interface formed between the silicon rubber and the epoxy glass fiber; applying a preset voltage to the electrode of the first interface by using a second forming module 402 to obtain a current variation graph; wherein the preset voltage is obtained by calculation according to the critical voltage; finally, the detection module 403 obtains the power-durability evaluation result of the first interface according to the current variation diagram, and then obtains the interface performance detection result according to the power-durability evaluation result.
According to the embodiment of the invention, a first interface is formed between the silicon rubber and the epoxy glass fiber by a method of internally arranging the electrode, so that the direction of electric field lines can be restrained; then, a preset voltage is applied to the electrode of the first interface, a strong electric field along the interface direction can be applied to the interface, so that a power resistance/electrical aging test can be carried out on the interface, a current change diagram is obtained, and a power resistance evaluation result of the first interface is generated. The embodiment of the invention can solve the problem that the existing interface performance detection method does not consider the evaluation of the electric resistance performance but is not comprehensive enough, and on the basis of the existing interface performance detection method, the electric resistance evaluation of the interface is used as a new reference index, so that the comprehensiveness of the interface performance detection method can be improved, and the precision of the silicon rubber/epoxy glass fiber interface performance detection can be improved.
In addition, the embodiment of the invention can also test and evaluate the field strength tolerance of the interface, thereby enriching the reference indexes of the interface performance detection method and further improving the comprehensiveness and the precision of the interface performance detection method.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. An interface performance detection method is characterized by comprising the following steps:
after an electrode is arranged on the surface of the epoxy glass fiber according to a preset distance, covering silicon rubber on the surface of the epoxy glass fiber to obtain a first interface; wherein the first interface is an interface formed between the silicone rubber and the epoxy glass fiber;
applying a preset voltage on the electrode of the first interface to obtain a current change diagram; the preset voltage is obtained by calculation according to the critical voltage;
and obtaining an interface performance detection result according to the power-resistance evaluation result after obtaining the power-resistance evaluation result of the first interface according to the current change diagram.
2. The method for detecting the interface performance according to claim 1, wherein after the electrode is arranged on the surface of the epoxy glass fiber according to the preset distance, the surface of the epoxy glass fiber is covered with silicon rubber to obtain a first interface, specifically:
arranging a plurality of electrodes on the surface of the epoxy glass fiber according to the preset distance; wherein the preset distance is a linear distance between every two electrodes;
and covering the surface of the epoxy glass fiber with an interface adhesive with a preset concentration, and then covering the silicon rubber with a preset thickness to obtain the first interface.
3. The method for detecting the interface performance according to claim 2, wherein a preset voltage is applied to the electrode of the first interface to obtain a current variation diagram, specifically:
the electrode includes: a first electrode and a second electrode;
and connecting the first electrode with the output end of a preset voltage source, and connecting the second electrode with the testing end of the preset voltage source to realize that the preset voltage is applied to the electrode of the first interface.
4. The method for detecting the interface performance according to claim 3, wherein the preset voltage is calculated according to a critical voltage, and specifically comprises:
after the critical voltage is obtained, calculating according to a preset proportion to obtain a preset voltage; wherein, the obtaining the critical voltage specifically includes:
applying a voltage that increases at a preset rate to the first electrode and the second electrode, and when it is determined that the first interface is failed, taking the voltage between the first electrode and the second electrode as the critical voltage and obtaining it.
5. The method for detecting the interface performance according to claim 4, wherein the obtaining of the evaluation result of the electric resistance of the first interface according to the current variation graph specifically comprises:
according to the current change diagram, when the current change rate is larger than a preset value, the power resistance evaluation result of the first interface is excellent; when the current change rate is less than or equal to the preset value, the power-resistance evaluation result of the first interface is general.
6. The method for detecting the interface performance of claim 5, wherein the preset distance is 1 mm; the preset thickness is 3 mm.
7. An interface performance detection apparatus, comprising: the device comprises a first forming module, a second forming module and a detecting module;
the first forming module is used for covering silicon rubber on the surface of the epoxy glass fiber after the electrode is arranged on the surface of the epoxy glass fiber according to a preset distance to obtain a first interface; wherein the first interface is an interface formed between the silicone rubber and the epoxy glass fiber;
the second forming module is used for applying a preset voltage on the electrode of the first interface to obtain a current change diagram; the preset voltage is obtained by calculation according to the critical voltage;
the detection module is used for obtaining an interface performance detection result according to the power-resistance evaluation result after obtaining the power-resistance evaluation result of the first interface according to the current change diagram.
8. The interface performance detection device according to claim 7, wherein after the electrode is disposed on the surface of the epoxy glass fiber according to the preset distance, the surface of the epoxy glass fiber is covered with silicone rubber to obtain a first interface, specifically:
arranging a plurality of electrodes on the surface of the epoxy glass fiber according to the preset distance; wherein the preset distance is a linear distance between every two electrodes;
and covering the surface of the epoxy glass fiber with an interface adhesive with a preset concentration, and then covering the silicon rubber with a preset thickness to obtain the first interface.
9. The interface performance detection device according to claim 8, wherein a preset voltage is applied to the electrode of the first interface to obtain a current variation diagram, specifically:
the electrode includes: a first electrode and a second electrode;
and connecting the first electrode with the output end of a preset voltage source, and connecting the second electrode with the testing end of the preset voltage source to realize that the preset voltage is applied to the electrode of the first interface.
10. The interface performance detection device according to claim 9, wherein the preset voltage is calculated according to a threshold voltage, and specifically includes:
after the critical voltage is obtained, calculating according to a preset proportion to obtain a preset voltage; wherein, the obtaining the critical voltage specifically includes:
applying a voltage that increases at a preset rate to the first electrode and the second electrode, and when it is determined that the first interface is failed, taking the voltage between the first electrode and the second electrode as the critical voltage and obtaining it.
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