Inspection device for the protective performance of electronic tunneling protective agent for circuit boards
A technology of tunneling effect and inspection device, which is applied in the direction of material resistance, etc., can solve problems such as the inability to intuitively express the protective performance of electronic tunneling effect protective agents, and achieve the effects of easy operation, high reliability, and high detection accuracy
Active Publication Date: 2016-01-20
重庆新原港科技发展有限公司
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[0005] In view of this, the embodiment of the present invention provides an inspection device for the electronic tunneling protective agent protection performance of the circuit board, so as to improve the existing measurement method that cannot intuitively express the electronic tunneling effect protective agent protection of the circuit board with uneven surface. performance problem
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[0016] The circuit board is a commonly used part in the manufacture of electronic products. In order to ensure that the circuit board will not be abnormal or damaged by external factors (such as moisture, mold, salt spray, pollution, corrosion, etc.), people often coat the circuit board with Protective film (such as three-proof paint, protective paste, electrical contact lubricant, metal protective agent and electronic tunnel effect protective agent, etc.) to protect the circuit board, the uniformity, density and firmness of the protective film coating directly affect the Therefore, it is necessary to test the protective performance of the electronic tunnel effect protective agent of the circuit board.
[0017] In the prior art, non-metallic coating thickness gauges are often used to measure the thickness of the protective film to test the protective performance of the protective film, but the non-metallic coating thickness gauge cannot measure the electrical contact points, so...
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The invention provides a test method and a test device for protective performance of an electron tunneling protective agent of a circuit board, relating to the field of electronic products. The test device for protective performance of the electron tunneling protective agent of the circuit board comprises a surface impedance tester. The method comprises the following steps: connecting the surface impedance tester into a to-be-tested circuit board; spraying nano vital mists to the surface of the to-be-tested circuit coated with the protective agent; and reading the impedance value collected by the surface impedance tester, wherein if the collected impedance value is greater than or equal to a predetermined value, the protective performance of the to-be-tested circuit is good. The method provided by the invention comprises the following steps: spraying nano vital mists to the surface of the to-be-tested circuit coated with the protective agent; and reading the surface impedance of the to-be-tested circuit by using the surface impedance tester. The operation is easy, and the surface impedance tester can be used for directly reading expression data of protective validness of the to-be-tested circuit with high detection accuracy.
Description
technical field [0001] The invention relates to the field of electronic products, in particular to an inspection device for the protective performance of an electron tunneling protective agent for a circuit board. Background technique [0002] Tunnel effect refers to the particles moving in translation on one side of the potential barrier. When the kinetic energy is less than the height of the potential barrier, according to classical mechanics, it is impossible for the particle to pass through the potential barrier. For microscopic particles, quantum mechanics proves that it still has a certain probability of passing through the barrier. This phenomenon is called tunneling effect. Electron tunneling protective agents (such as conductive paste, electrical contact lubricant and metal protective agent, electrical contact solid film protective agent, etc.) work according to this principle. This type of protective agent can significantly reduce the contact of various electrical ...
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IPC IPC(8): G01N27/04
Inventor 邓成皿
Owner 重庆新原港科技发展有限公司