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Analysis on the characteristics of PTFE moulded pipe

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Analysis on the characteristics of PTFE moulded pipe

  • Categories:Industry news
  • Author:Miss Teflon tube
  • Origin:Miss Teflon tube
  • Time of issue:2010-01-12 15:21
  • Views:

Analysis on the characteristics of PTFE moulded pipe

  • Categories:Industry news
  • Author:Miss Teflon tube
  • Origin:Miss Teflon tube
  • Time of issue:2010-01-12 15:21
  • Views:

  1. Introduction to PTFE

  Polytetrafluoroethylene, commonly known as "Plastic King", is a polymer made by polymerizing tetrafluoroethylene as a monomer. White waxy, translucent, excellent heat and cold resistance, and can be used for a long time at -180~260ºC. This material is resistant to acids, alkalis, and various organic solvents, and is almost insoluble in all solvents. By adding carbon, graphite, glass and other additives, the performance of polytetrafluoroethylene can be improved.

  2. Introduction to PTFE Molded Pipe

  The main performance of PTFE pipe

  1. Excellent chemical resistance;

  2. Working temperature -190℃ to +260℃;

  3. The strongest anti-fatigue ability (Weller curve);

  4. FDA approved;

  5. Flame retardant-UL94V0;

  6. No persistence;

  7. Low friction coefficient;

  UV resistance (will not age);

  8. No moisture absorption (water absorption rate <0,01%);

  9. Very good dielectric insulation performance.

  

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Figure 1 Source of PTFE molded tube: Miss Teflon tube

  3. Features of PTFE molded tube:

  1. There are three types of PTFE pipes:

  The tube with an outer diameter of 1mm-25mm and a wall thickness of 0.1mm-2.5mm is made of imported dispersion polymerized PTFE resin through paste pressing;

  Tubes with an outer diameter of 25mm-200mm and a wall thickness of 1.5mm-8mm are made of suspended polytetrafluoroethylene resin by plunger extrusion;

  Tubes with an outer diameter of 25mm-1200mm and a wall thickness of 5mm-500mm are made by molding.

  2. Uses of PTFE molded tube: wire insulation sheath, corrosive fluid medium pipeline, various electrical insulation parts used under high frequency, etc.

  3. Specifications of PTFE molded tube:

  

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Figure 2 PTFE Molded Tube Specification Table Source: Teflon Tube Miss Sister

  Fourth, the difference between PTFE molded tube, extruded tube and filled tube

  1. Different manufacturing process:

  (a) The PTFE molded tube is extruded using high-quality plunger technology. Special processing technology is adopted to make the steel tube and plastic tube tightly combined, with a fine appearance and high strength without mechanical impurities.

  (b) The PTFE extrusion tube is made of suspension polymerized PTFE resin through plunger extrusion processing.

  (c) The PTFE filled tube is made of filled PTFE resin by molding. Suspension polymerization polytetrafluoroethylene resin is mixed with various fillers to form filled polytetrafluoroethylene resin.

  2. Different characteristics and uses:

  (a) Teflon molded pipes have corrosive medium fluid pipes, insulating sheaths and drive shafts. Transporting highly corrosive gases and liquids at high temperatures cannot be replaced by other pipelines. It can be used to connect graphite, ceramic or glass pipes with lower machinery, and can be used as feed and discharge pipes for tank trucks, storage tanks, containers or reactors. It can be used for pipe dislocation connection or to balance pipes caused by weather or other reasons. Displacement, dimensional changes or used to eliminate high-frequency mechanical vibration. In special occasions, it can also be used as a tube reactor or heat exchanger.

  (b) PTFE extruded pipe has the best chemical resistance and dielectric properties. Suitable for conveying food and beverages, steam, chemicals/pharmaceuticals, etc. It is a pressure tube used to transport hydraulic fluid in the aerospace industry, such as jets, rockets and other spacecraft for high-speed fuel delivery. High-pressure air in the automobile industry, the transportation of highly corrosive media in the chemical industry, and the passage of high-purity fluids in the pharmaceutical industry. In the civil industry, it is suitable for the flexible connection of hydraulic pressure, steam pressure, steam transmission, etc. in rubber, plastics, pharmaceuticals, clothing, shipbuilding, automobiles, machine tools, electric welding machines, diesel engines, papermaking and other industries.

  (c) Polytetrafluoroethylene filled pipes. A variety of fillers suitable for mixing with polytetrafluoroethylene include glass fiber, carbon fiber, tin bronze and lubricants (such as graphite, molybdenum disulfide) and have been widely used in large-scale production. Compared with pure PTFE, filled PTFE has the advantages of higher compressive strength, wear resistance, good heat conduction, and reduced thermal expansion.

  Shenzhen DanKai Technology Co., Ltd. (ShenZhen DanKai Technology Co.,ltd.), whose predecessor was Dongguan Dandi Insulation Material Co., Ltd. Fluoroplastic Material Factory, which was established in 1998, specializes in FEP, PFA, PTFE and other fluoroplastic pipes. R&D, production and sales of rod, sheet and film products and other insulating materials. The company has a senior R&D team with international standards and a production line of fluorine plastic products imported from abroad. Some fluoroplastic products have passed ISO9001, SGS, FDA certification, and have been fully affirmed by domestic and foreign cooperative customers such as Huawei, Foxconn, Midea, ZTE, Intel, and AirTAC. The main products of the company are: ①Tubes: Ptfe tube, Fep tube, Pfa tube, Pvdf tube; ②Heat shrinkable tube: Ptfe heat shrinkable tube, Fep heat shrinkable tube, Pfa heat shrinkable tube, Pvdf heat shrinkable tube; ③Plate rod Membrane: Ptfe board and rod film, Fep board and rod film, Pfa board and rod film, Pvdf board and rod film; ④Insulation materials: silica gel, PE, PVC, UPE, etc.; ⑤Special category: PFA imported connector, spiral tube, spring tube , Rotary cut tube, welding rod, tee, straight-through, gasket, joint, taper rod, flared tube, sealing tube, braided tube, bellows, etc. At the same time, fluorine plastic products of various specifications can be customized and processed according to customer requirements.

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