Corrosion resistance of PTFE hose

Corrosion-resistant PTFE chemical hoses are corrosion-resistant, low temperature resistant, acid and alkali resistant, ozone resistant, flame retardant, etc

Corrosion Resistant PTFE Chemical Hose
Corrosion-resistant PTFE chemical hoses are corrosion-resistant, low temperature resistant, acid and alkali resistant, ozone resistant, flame retardant, etc., and are widely used in chemical piping systems in various corrosive environments, such as petrochemical, pharmaceutical, etc.
Corrosion-resistant PTFE chemical hose is a self-lubricating chemical fluid delivery pipe used in corrosive media. It is made of high-density polyethylene (HDPE) and is mainly used to transport corrosive media in petrochemical industries.
Corrosion-resistant PTFE chemical hose has good self-lubricating properties, which makes it have higher requirements on mechanical properties, and through the use of advanced production technology and formula design, the product can have high mechanical strength and impact resistance .
Corrosion Resistant PTFE chemical hose is a high-strength, high-toughness material with excellent self-lubricating properties.
Corrosion resistance
In the chemical piping system, due to the presence of corrosive media, corrosion may occur on components such as pipes and valves, and the use of corrosion-resistant PTFE chemical hoses can extend their service life. Especially for highly corrosive media, such as corrosive acids, alkalis, etc., corrosion-resistant PTFE chemical hoses have good corrosion resistance. This is because the corrosion-resistant PTFE chemical hose has good corrosion resistance in chemical media by adding an appropriate amount of antioxidants. This is because antioxidants can enhance corrosion resistance and improve the corrosion resistance of corrosion-resistant PTFE chemical hoses.
In addition to high-density polyethylene (HDPE), other materials are used, such as polytetrafluoroethylene (PTFE), polysiloxane (PO), polyvinylidene fluoride (PVDF), etc., to meet the requirements of different chemical media on the pipeline. Require. Choose according to specific working conditions.
wear resistance
Wear resistance refers to the ability of a material to resist wear during friction and wear. The better the wear resistance, the longer the service life of the material, which can save a lot of cost.
The abrasion resistance of PTFE chemical hose depends on three factors:

1. Surface roughness of the friction pair (that is, surface roughness): There is a smooth and dense polymer film on the surface of the PTFE chemical hose, which separates the surface of the friction pair, thereby preventing direct friction between the two surfaces. Reduced friction.
2. The relative sliding velocity of the surface of the friction pair: the smaller the relative sliding velocity of the material, the smaller the friction coefficient. If the sliding speed is 0.075m/s, the sliding wear of PTFE chemical hose is very small.
3. The strength of the material itself: The strength of the PTFE chemical hose is determined by the relative sliding speed of the material itself. Therefore, if the material strength is not high enough, it will lead to increased wear. For example, during the use of PTFE chemical hoses used in industrial pipelines, the pipeline itself is deformed, broken or broken due to insufficient strength of the pipeline itself or large particles of impurities in the conveying medium.
   self-lubricating
   (1) Corrosion-resistant PTFE chemical hose has high strength and rigidity, but its rigidity and toughness are not as good as metal pipes, so it needs better stability in the piping system to avoid unnecessary vibration and shock.
   (2) Corrosion-resistant PTFE chemical hose has good self-lubricating properties and can work under lower temperature and pressure.
   It can also withstand low temperatures and minus 40 degrees Celsius, and has strong corrosion resistance.
   (4) Corrosion-resistant PTFE chemical hose will not be oxidized during use and has a long service life.
   (5) Corrosion-resistant PTFE chemical hose has low material density, light weight, good flexibility, no pollution to the medium, and no electrostatic hazard. It can be used in places with flammable and explosive hazards.
   Anti-aging properties
   Corrosion Resistant PTFE chemical hose has excellent resistance to aging, a feature that keeps it from degrading during application, resulting in a longer service life. In order to better adapt the product to the chemical environment, materials with excellent anti-aging properties are used in its formulation. In the production process, the product has good anti-aging performance by adding an appropriate amount of additives such as antioxidants and ultraviolet absorbers.
   Corrosion-resistant PTFE chemical hose is a high-performance chemical fluid delivery pipe with corrosion resistance, weather resistance, self-lubricating, self-lubricating and self-cleaning characteristics. It can be used in a strong corrosive environment for a long time without degradation, thus ensuring the long life of the product. It adopts advanced production technology and formula design, so that it has high mechanical strength and impact resistance. Corrosion-resistant PTFE chemical hoses can be used to transport chemical media, acid and alkali, sea water, oil and other fluids. They have good self-lubricating properties and anti-aging properties, and are suitable for transporting various corrosive fluids.
   cold resistance
   Corrosion resistance The working temperature of PTFE chemical hose can reach -130°C, and it has excellent low temperature resistance. It can be used for a long time at -196°C. Compared with metal pipes, it has better low temperature resistance. Therefore, corrosion resistant PTFE chemical hose can work well at low temperature.
4. Resistant to acid, alkali and organic solvents;
5. Resistant to oil and other media;
6. Ozone aging resistance, not subject to ultraviolet radiation;
7. High and low temperature resistance, good impact strength and self-lubricating properties;
8. Working temperature -100℃~+300℃.
9. Acid and alkali resistance: It has strong resistance to most chemical solvents and acids and alkalis. It is a non-chemically inert material that is not corroded by any chemical substances.
10. High temperature resistance: It can maintain the original physical properties at 1000 ° C, and will not reduce its mechanical properties due to heating.
11. Cold resistance: It has good toughness and elasticity, and can maintain a certain degree of flexibility and impact resistance at low temperatures.
    Flame resistance
    PTFE chemical hoses are not easy to burn at high temperatures, and can be used on open flames without burning, producing no toxic smoke, no poisonous gas, and can be automatically extinguished through flame conduction. Corrosion-resistant PTFE chemical hose is an excellent flame-retardant material. Because it can not only prevent the spread of flames, but also prevent the generation of toxic gases and smoke.
12. Due to the characteristics of high temperature resistance, it will not deform or embrittle when the working temperature is high.
13. It can be used for a long time in the temperature range of -200~250℃.
14. Because it has good self-lubricating properties, it can meet the conveying requirements without adding any lubricant when working.
15. It can resist the corrosion of various acid and alkali solutions and organic solvents, and is the most ideal material for chemical fluid delivery pipes.
16. Since the PTFE chemical hose has good ozone resistance, it can be used outdoors and will not be damaged even under sunlight.
17. It can be used at low temperature below -200℃, but this performance requires special processing and special treatment.
18. Clean fuels such as ordinary gasoline and diesel can be used to reduce environmental pollution.
    Antioxidant
    In various types of chemical media, free radicals generated by chemical reactions will cause oxidative degradation of polyethylene molecules, thereby affecting its performance. Polyethylene is a polymer compound that does not react chemically by itself, but under environmental conditions, such as oxygen, water, etc., will react with it, thereby degrading polyethylene.
    In order to improve the performance of polyethylene, antioxidants can be added. At present, the commonly used antioxidants at home and abroad include dimethyldichlorosilane, dichlorodiphenylmethane, tetrahydrofuran, diphenylmethane, etc.
    With the development of science and technology and the improvement of social requirements for environmental protection, polyethylene materials need to be modified. In recent years, many polyethylene materials have improved the heat resistance and mechanical properties of polyethylene by adding metal oxides, metal organic complexes, metal phosphates, etc. Among these methods, the addition of metal oxides and metal-organic complexes is currently the most effective method.