Computer room static electricity
The static electricity in the communication equipment room is mainly the objects of two different electrification sequences that gather positive charges on one object after being contacted and separated by friction, collision, and peeling, and the other object accumulates the same amount of negative charges. Forming. This is because when the two different objects are in close contact with each other, their outermost electrons have different work functions. The electrons escape from the object with smaller work function to objects with larger work function. In addition, conductor static induction, piezoelectric effect, electromagnetic radiation induction, etc. can also generate a very high electrostatic voltage.
Computer room static electricity hazards
Static electricity in the engine room will not only cause random failures, malfunctions, or calculation errors while the computer is running, but also may cause breakdown and destruction of certain components, such as CMOS, MOS circuits, and dual-level circuits. In addition, static electricity also has a significant effect on the external equipment of the computer. When a display device with a cathode ray tube is disturbed by static electricity, the image may be disordered, and the display may not be blurred. Static electricity can also cause malfunctions such as modems, network cards, faxes, printers, and other problems.
The problem caused by static electricity is not only difficult for hardware personnel to detect, but sometimes it is caused by software personnel mistakenly thinking that it is a software failure. In addition, when the static electricity discharges the human body to a computer or other device (the so-called ignition), when the energy reaches a certain level, it will give people the feeling of electric shock (such as sometimes touching the computer monitor or the chassis, there is a clear sense of electric shock).
Basic principles of electrostatic protection in the engine room
1. Suppress or reduce the generation of electrostatic charge in the room and strictly control the static power supply.
2, safe and reliable in time to eliminate static electricity generated in the room to avoid static charge accumulation, electrostatic conductive materials and static dissipative material leakage method, so that static charge in a certain period of time through a certain path to the ground leakage; insulation material with ions The neutralization method represented by the static eliminator causes the static charge accumulated on the object to attract the opposite charge in the air and is neutralized and eliminated.
3, regular (such as a week) maintenance and inspection of anti-static facilities.
Main Category of Anti-static Floor in Computer Room
Anti-static direct-laid flooring: Anti-static straight-laid flooring is generally divided into high anti-static floor, straight shop anti-static floor and anti-static floor.
1, elevated anti-static floor
Composite anti-static flooring samples High anti-static flooring is generally divided according to different substrates and veneer materials. Base materials are steel base, aluminum base, compound base, particleboard base (wood base), calcium sulfate base, etc. Veneer materials include anti-static tiles, melamine (HPL), PVC, new PVC, etc.
Common are: all steel anti-static floor, composite anti-static floor, aluminum anti-static floor, carbon steel anti-static floor and ventilation panels.
High anti-static floor Scope:
Anti-static raised floor is mainly used in computer room, data processing center, laboratory, microwave communication station room, program-controlled telephone exchange room, mobile communication room, satellite ground station room, radio control room, television transmission station control room, broadcast control room, monitoring Room, central control room, etc.
2, straight shop anti-static floor
Directly laid anti-static flooring is generally divided into: straight PVC anti-static flooring and straight shop anti-static floor tiles
2.1, straight PVC anti-static flooring
The static conductive network formed between the interfaces of plastic particles makes it have a permanent anti-static function, and the appearance of the surface resembles a marble pattern, is very flexible, and has a uniform structure. It consists of a colored polyvinyl chloride (PVC) sheet coated with a special conductive liquid on the surface. , And after a static squeeze into a solid PVC block, sliced ​​from the final anti-static floor, with a good decorative effect.
PVC anti-static floor applicable scope:
a, assembly / manufacturing / research and development.
b, telecommunications industry; laboratory / computer room.
c. Health care field; operating room/emergency room/hospital special care area/medical/drug/biotechnology industry.
d. Commercial and industrial environments; clean room floors, etc.
2.2, straight shop anti-static tiles
In the process of tile firing, anti-static powder is added for physical modification, so the anti-static performance is very stable. The resistance value is between 10 6 and 10 9 ohms, and the construction is convenient. The ordinary slusher Can shop.
Adding aluminum foil or copper foil under the floor can better enhance the electrical conductivity.
The advantage is that the antistatic performance is stable. This floor belongs to the national patent product green environmental protection (belong to green building materials), high wear resistance (0.1g/1000 rpm), anti-aging, long service life (more than 30 years), Class A fire prevention , Low water absorption (<0.5%), easy to clean (can be directly cleaned with non-drip mops), acid and alkali resistance are A grade, high flatness, as long as the paving is not empty drum bearing capacity (and The surface load is almost the same), can be used for UPS room, on the line location. Due to its comprehensive performance, it is becoming more and more popular in the market.
Main Specifications:
Conductive properties: Surface resistance 10 of the 6th power - 10 of the 9th power ohms anti-static porcelain floor
Volume resistivity 10 of 7th power - 10 of 10th power ohm/cm
Pyrotechnic performance: not less than 1600 °C
Abrasion resistance: 0.1g/1000 rpm
Water absorption: <0.5%
Cold extreme heat resistance: 15°C-105°C
After 10 cycles of quenching and cooling, no obvious cracks appear
Anti-bending strength: the average value is not less than 27Mpa
Warpage: ±0.5%
Floor Specifications: 600×600×10mm
3, anti-static floor
Features: a, anti-static effect is excellent and lasting, without time, temperature, humidity and other effects;
b. Use solvent-free advanced epoxy resin and high-quality curing agent.
c, smooth surface, beautiful, moisture, mirror effect;
d, corrosion resistance to acids, alkalis, salts, and oils, especially good alkali resistance;
e, wear resistance, pressure resistance, impact resistance, there is a certain degree of flexibility
Anti-static floor construction process:
a. Base treatment b Brushing and sealing primer c Laying copper wire, cutting groove d
Floor installation and laying tools
1. Marble cutting saw;
2, laser level meter, network laser scanner;
3, bubble level meter, tape measure, ink line;
4, suction plate, nut adjustment, hand, Phillips screwdriver;
5, vacuum cleaners, dusters, mops;
6, talc, foam, wood, rubber, aluminum and angle iron, aluminum angle iron and other materials to meet the requirements.
Computer room anti-static floor construction steps
1. Seriously check the flatness of the ground and verticality of the wall surface. If any major defects are found or need to be partially modified, it should be submitted to the relevant departments of Party A;
2, pull the horizontal line, and the floor installation height with ink lines to the wall, to ensure that the laying of the floor in the same level, measuring the length of the room, width and select the reference position, and pop up in the ground to install the bearing grid network To ensure that the laying is neat and beautiful, while minimizing the cutting of the floor;
3. Adjust the support to be installed to the same required height and place the support at the intersection of the ground grid lines;
4. Fix the truss beam to the support with mounting screws and correct the truss beams one by one with a horizontal ruler and a square ruler so that they are in the same plane and perpendicular to each other;
5. Place a movable floor on the assembled truss beam with a suction board;
6. If the remaining size near the wall is less than the length of the movable floor, it can be repaired by cutting the floor.
7. When paving the floor, use a bubble leveler to level the block. The height of the movable floor is adjusted by the adjustable support. The laying process should be carried out gently to prevent scratching the floor and damaging the edge. It should be cleaned while laying. Avoid leaving debris and dust under the floor;
8. When setting up the heavier equipment in the engine room, install a support under the floor of the equipment base to prevent deformation of the floor;
9, HPL decorative panels need to cut or open processing, the opening concave corner should be made of φ6 ~ φ8 check hole, in order to prevent the cracking of the floor decorative surface after processing.
Machine room anti-static floor maintenance and maintenance
1, the use of the environment:
Room environmental control requirements for laying an anti-static floor: 15°C to 35°C, relative humidity: 45% RH to 75% RH;
2, decorative floor:
1) Disable the use of sharp, sharp-edged tools for direct construction on the decorative surface of the raised floor to prevent damage to the anti-static properties and aesthetics of the decorative surface;
2) In the process of use, it is forbidden to jump directly from a height to an anti-static floor, and brutely move and bruise the floor when moving articles;
3) When moving objects on the movable floor, it is forbidden to directly push the object on the surface of the board so that the object directly rubs against the ground, resulting in scratches on the board surface;
4) When carrying goods, use the cart with rubber wheels to carry or carry the isolation pad between the outline of the object and the floor to prevent the board surface from being damaged;
5) When placing heavier items on the surface of anti-static movable board, it should be smoothly placed so as not to damage the anti-static floor;
6) In the maintenance of the equipment in the underfloor space, apply a floor sucker to install the floor, and disassemble and remove the floor so that they do not damage the anti-static floor.
(7) Use clean mops and rags to keep the board clean. Be careful not to spill a lot of water, detergent, etc. on the floor, so as not to affect the life of the anti-static floor and affect the lines and equipment under the anti-static floor. Normal operation;
3, bare floor and ventilated floor
(1) During use, the anti-static spray layer of the movable floor shall be prevented from being scratched. If scratches are found, the gray paint shall be used to make up the brush to ensure the integrity of the coating.
(2) Prevent small objects from falling into vents (such as coins, keys, paper clips, pins, etc.) on ventilated floors to prevent damage to ventilation regulators and other equipment.
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