Speaking of polytetrafluoroethylene (Poly tetra fluoroethylene, abbreviated as PTFE), itself may not be unfamiliar. PTFE is non-toxic. In medicine, it is often used in blood vessel, heart, general internal medicine and plastic surgery. For example, rhinoplasty in plastic surgery uses PTFE as a supplement. So, besides the medical profession, in which industries is PTFE monopolized?PTFE, commonly known as “Plastic King”, is also known as “Teflon”, “Teflon”, “Teflon”, “Teflon” and so on. It is a high molecular compound formed by polymerization of tetrafluoroethylene. It has excellent chemical firmness, corrosion resistance, airtightness, high slip and non-stick properties, electrical insulation and high-quality anti-aging endurance. PTFE has a low-temperature-resistant nature, and can be temporarily obligated at a temperature of +250°C to -180°C. In the manufacturing industry, it is often used as an engineering plastic material and can be formed into PTFE tubes, rods, strips, and plates. , Film, etc.In addition, PTFE also has the characteristics of heat insulation and heat absorption. When the temperature rises, PTFE presents a different pyrolysis curve, and its pyrolysis is an endothermic reaction, thereby reducing the temperature around PTFE. In addition to the above monopoly, PTFE also plays an irresponsible role in explosion-proof wealth equipment. What is an explosion-proof wealth device? In theory, explosion-proof wealth equipment is a general term for wealth equipment including level switches, level meters, flowmeters and other instruments that have explosion-proof obedience to prevent explosions. If these explosion-proof wealth equipment are arranged in flammable and explosive places where they can be killed in ambush and explosion, they need to have explosion-proof compliance. In the explosion-proof equipment, the standard GB 38.36 divides the temperature group into 6 grades, which are T6=85℃, T5=100℃, T4=1 35℃, T3=200℃, T2= Three 00℃, T1=450℃.Among them, T6 is the lowest level. It clarifies that when other explosion-proof equipment of T6 level is monopolized under its rules and regulations, the maximum inner temperature will not be higher than 85℃, even if the temperature is higher than 85℃, it will be tedious to burn and explode. China is also probably a safe monopoly. The higher the temperature group, it also clarifies that the equipment can adapt to the flammable and explosive conditions downstream. Regarding the above-mentioned death situation, the flameproof enclosure has the obedience to isolate the sparks and arcs of the electrical components in the enclosure from the explosive foreign objects outside the enclosure, and the explosive foreign matter entering the enclosure is roughly affected by the sparks of the electrical equipment in the enclosure. , The explosion pressure of fire when the arc is detonated. Not only is it cloudless, but it can also prevent the exploding creatures in the shell from spreading to the explosive alien material outside the shell, and will not cause the explosive alien material outside the shell to burn and explode. This complaint is to make rigid rules and regulations on the size of the explosion-proof gap, and it is the key to whether the explosion-proof enclosure can be flameproof. In addition, if the explosion-proof enclosure does not have a breathing device, when the temperature of the outer surface of the enclosure is too high, not only will the temperature around the circuit modules in the enclosure rise, resulting in the relaxation of the circuit modules, but also affect the temperature in the explosion-proof certification Gradient makes the temperature gradient higher, which affects the temperature level of flameproof certification. At this time, the temperature needs to be lowered through the heat-absorbing nature of the PTFE casing, and the guard circuit module can be deformed without affecting the explosion-proof level of the explosion-proof certification.
As a result, roughly speaking, PTFE has a huge pottery stain. It is not only monopolized by humans in medical treatment, but also provides a protective wall for on-site operation safety in explosion-proof wealth equipment. It is inconspicuous as a raw material in human preservation, but it also plays a crucial and relaxed role.
Post time: 21-09-21