In our daily life, our Teflon is common, but the use of it in the process, how many people know its characteristics of what is it? Property
　　1, not sticky: Almost all the material is not bonded with Teflon coating, Thin film also showed good adhesion properties.
　　2, heat resistance: Teflon coating has excellent heat resistance and low temperature properties. Short period of time can be high temperature to 300 ℃, generally between 240 ℃ -260 ℃ can be used continuously, with significant thermal stability, it can work without embrittlement in freezing temperatures, it does not melt at high temperatures.
　　3, sliding: Teflon coating has a low coefficient of friction. Load sliding friction coefficient changes, but only in the values ​​between 0.05-0.15.
　　4, anti-wet: Teflon coating surface water and oil production operations are not easy to dip solution, such as sticking a small amount of dirt, simply wipe clean.Downtime is short, save time and improve efficiency.
　　5, wear resistance: under high load, with excellent wear resistance. In a certain load, wear-resistant and non-adherence with the dual advantages.
　　6, corrosion resistance: Teflon is almost free from erosion of the drug, in addition to withstand molten alkali metal fluoride, a strong acid medium, and above all than 300 ℃ sodium hydroxide (including aqua regia), strong oxidizing agents, reducing agent and various organic solvents, can protect parts from being any kind of chemical corrosion.
　　Physical properties
　　Relative density: 2.14-2.2
　　Water absorption (23 ℃, 24h): less than 0.01%
　　Tensile strength MPa: 22-35
　　Elongation%: 200-400
　　The tensile modulus MPa: 400
　　Flexural modulus MPa: 420
　　Compressive elastic modulus MPa: 500
　　Notched impact strength J / m: 163
　　Heat distortion temperature ℃: 0.45MPa, 121,1.82MPa, 55
　　Linear expansion coefficient of 10-5 / ℃: 10
　　Flame retardancy (UL94): V-0
　　Volume resistivity Ω / cm: 1017-1018
　　Dielectric constant: <2.1
　　Dielectric loss tangent: <2 × 10-4
　　Dielectric strength KV / mm:> 17
　　Arc resistance:> 300
　　Chemical Properties
　　Insulation resistance: unaffected by the environment and frequency, volume resistivity of up to 1018 ohms / cm, dielectric loss, high breakdown voltage.
　　High and low temperature: The temperature influence changes little, wide temperature range range, temperature -190-260 ℃.
　　Self-lubricating: With the smallest plastic friction coefficient, is the ideal oil-free materials.
　　The surface is not sticky: known solid materials can not adhere to the surface, is a minimal surface energy of the solid material.
　　Resistance to atmospheric aging resistance, radiation resistance and low permeability: Long-term exposure to the atmosphere, surface and performance remained unchanged.
　　Non-flammable: limiting oxygen index of 90 or less.
　　PTFE is widely used in high temperature, high viscosity requirements of industry. The strongest super acid - fluoroantimonic acid can also be used to do it to save.