With the development of science and technology, people rely more and more on electronic products to help us do many things. Gradually, a product called shielding glass was gradually invented and utilized by people, and shielding glass is also called electromagnetic shielding glass. In the next article, Xiaobian will tell you about some uses of this new material-electromagnetic shielding glass and its harm. I hope that the introduction of Xiaobian will help you to understand this kind of glass.
product use
At present, with the continuous development of electronics and computer technology, this product is widely used in communication, IT, electric power, medical care, banking, securities, government, military and other civil and national defense fields. Mainly solve the electromagnetic interference between electronic system and electronic equipment, prevent the leakage of electromagnetic information and protect against electromagnetic radiation pollution; Effectively ensure the normal work of instruments and equipment, ensure the safety of confidential information, and ensure the health of staff.
A, can be used for the observation window of electronic equipment, such as CRT display, LCD display, OLED and other digital display screens, radar display, precision instruments, meters and other display windows.
B, observation windows used in key parts of buildings, such as lighting shielding windows, viewing windows in shielded rooms, visual partition screens, etc.
C, cabinets and director cabins requiring electromagnetic shielding. Communication vehicle observation window, etc.
electromagnetic shielding is one of the effective methods widely used in electromagnetic compatibility engineering to suppress electromagnetic interference. Shielding means that the electromagnetic wave is limited in a certain range by a Shield made of conductive and magnetic materials, so that the electromagnetic wave is suppressed or attenuated when it is coupled or radiated from one side of the shield to the other. ? Electromagnetic shielding films are mainly made of conductive materials (Ag, ITO, indium tin oxide, etc.), which can be plated on glass or on other substrates, such as plastic films. The main performance indicators of materials are: light transmittance and shielding effectiveness, that is, how much energy is shielded.
Harm
1. Compatibility failure of electromagnetic shielding glass
It is very common that electromagnetic wave interference in electromagnetic shielding glass reduces the technical performance index of the system (equipment). Television and radio are the most easily disturbed in daily life, but when the interference source is turned off or far away, the interference symptoms disappear and everything returns to normal. Strong electromagnetic interference makes the front-end circuit of radio receiver burn out and can't return to normal work; The amusement park roller coaster collided because the electromagnetic interference of the electronic game machine was out of control, causing tourists to be injured; Nuclear power plants are all electromagnetic compatibility failures due to electromagnetic radiation of mobile phones. Electromagnetic compatibility failure will bring huge losses to national defense, industry, transportation, medical care and scientific research, and endanger personal safety.
2. Misignition
The electromagnetic wave interference in the electromagnetic shielding glass causes electric sparks or arcing between metals due to the electromagnetic induced voltage, which ignites the flammable gas there and leads to the combustion of flammable materials. Flammable liquid (gas) such as fuel oil flows and rubs in containers or pipes to generate electrostatic accumulation, and under certain conditions, electrostatic discharge may also cause accidental combustion.
3. Radiation hazard of electromagnetic shielding glass
Electromagnetic waves in some inferior electromagnetic shielding glasses act on human bodies, animals and plants, and can be reflected, absorbed and penetrated. This biological effect of non-ionizing radio frequency radiation has always been concerned by human beings. Because under certain conditions, electromagnetic radiation can lead to dysfunction of central nervous system and autonomic nervous system, eye injury, cancer or immunodeficiency diseases. In general, the human body is less than 63? It is safe in 1V/m field strength environment. Another danger of electromagnetic radiation is radio frequency burns. Metal objects in strong electromagnetic fields (such as metal conductors under transmitting antennas, cranes and ship metal railings, etc.) may have dangerous induced voltages, and may be burned or feel electric shock when touched by human bodies.
well, that's what xiaobian told you about some related information about electromagnetic shielding glass. I believe you have a fairly complete understanding of this new material through xiaobian's story, right? Scientific and technological life does lead us to a better and more convenient future life. However, one-sidedness makes our life inconvenient. Therefore, Xiao Bian reminds everyone that it is still necessary to use these new scientific and technological products objectively and rationally. Only in this way can our life be a relatively healthy life.