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How to do a good job of anti-static work in a 10,000-class clean room
- Categories:Industry
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- Time of issue:2021-08-27
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(Summary description)Accidents caused by static electricity in the 10,000-class clean room frequently occur, so the anti-static ability of the clean room has become an aspect that cannot be ignored in evaluating its quality.
How to do a good job of anti-static work in a 10,000-class clean room
(Summary description)Accidents caused by static electricity in the 10,000-class clean room frequently occur, so the anti-static ability of the clean room has become an aspect that cannot be ignored in evaluating its quality.
- Categories:Industry
- Author:
- Origin:
- Time of issue:2021-08-27
- Views:0
Accidents caused by static electricity in the 10,000-class clean room frequently occur, so the anti-static ability of the clean room has become an aspect that cannot be ignored in evaluating its quality.
The so-called static electricity means that due to friction and other reasons, the uniform neutral state of the positive (+) negative <one) charge in the object is destroyed, so that the charge is excessive and the object is in a charged state. Because these charges usually do not flow, so Called static electricity.
The accidents caused by static electricity in the 10,000-class clean room have the following aspects:
1. Electrostatic shock caused by static electricity can cause people's insecurity and fear, and can cause secondary injury (for example, a person falls due to an electric shock, and is injured by a fall);
2- The discharge current caused by electrostatic discharge can cause damage and malfunctions such as semiconductor components. For example, if 50 P-MOS circuits are placed in a plastic bag and shaken several times, the NAND gate will be severely broken down. 39 Block, the failure rate is up to 78%, this is because semiconductor devices are very sensitive to electrostatic discharge;
3. Electromagnetic waves generated by electrostatic discharge can cause noise and malfunction of electronic instruments and devices;
4. The luminescence of electrostatic discharge can cause damage to photosensitivity such as photographic limbs;
5. The mechanical phenomenon of static electricity can cause the screen holes to be blocked by dust, the spinning yarn is chaotic, the printing depth is uneven, and the product is contaminated;
6. The most dangerous disaster caused by electrostatic discharge is the explosion caused by the fire source well that becomes combustible. For example, according to foreign literature statistics, out of 86,000 explosive anesthetics used in the operating room, 36 explosions occurred, of which 21 were caused by static electricity;
The occurrence of static electricity accidents mainly lies in the generation and accumulation of static electricity, and the flow of airflow, the friction between the airflow and the pipe, the tuyere, the filter, the friction between the human body and the clothes, the friction between the clothes, the grinding process, spraying, jetting, washing , Mixing, bonding and peeling operations, all of which may generate static electricity. In general, the smaller the conductivity of the non-conductor (insulator), the less likely it is to flow after the charge is generated, and therefore the easier it is to be charged.
The problem of static electricity is particularly serious in clean rooms, because not only the various process factors that generate static electricity are available in the clean room, but also because many materials in the clean room, such as plastic floors, walls, nylon, and real work clothes, are very High resistivity is very easy to generate static electricity and accumulate static electricity. Before static electricity disasters in clean rooms were not taken seriously, these materials were widely used.
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