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Application of PTFE film

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Application of PTFE film

  • Categories:Industry news
  • Author:PFA tube lady
  • Origin:PFA tube lady
  • Time of issue:2006-10-21 10:03
  • Views:

Application of PTFE film

  • Categories:Industry news
  • Author:PFA tube lady
  • Origin:PFA tube lady
  • Time of issue:2006-10-21 10:03
  • Views:

  1. Everyone knows that the production of PTFE film and other plastic films is different, and the processing technology is also different. PTFE film has high insulation, corrosion resistance, heat resistance, cold resistance and aging resistance.

  The PTFE film is obtained by turning. It is made by using suspended polytetrafluoroethylene resin to be molded into a tubular compact, placed in an oven for sintering, and then cooled to a mature blank, and then turned by a lathe or cutting machine, so many people They are all called PTFE turning films. The PTFE turning film should be rolled smoothly and the end surface should be neat. The surface of the film should not have creases, cracks, holes, mechanical damage and other defects that affect the requirements of use. The thickness tolerance should comply with the professional standard of the Ministry of Light Industry as the allowable range of QB4876-2015.

  The PTFE film is a non-directional film, and the surface is a bit dark, which is the same as the PTFE turning board. In order to make the turning film molecules closer, enhance its pressure resistance, and make the thickness of the turning film more uniform. We reprocess the turned film by calendering to make it into an oriented film. After calendering, the film has a compact molecular structure, increased compression strength, smooth surface, smoother appearance, high density, translucent, or transparent. The thickness of the film produced by the car is generally thicker, and thinner products can be obtained by calendering. Deviations in the calendering process will cause uneven film thickness. The non-oriented film is calendered 1.1-1.8 times as a semi-oriented film.

  Main uses: PTFE film oriented film is used to make capacitors; semi-oriented film is used for wire insulation; non-oriented film is used for wiring insulation of electrical appliances or as a sealing gasket material, and can also be used for debonding and demolding Materials, high-tech cutting-edge technologies such as high-frequency heating cables, temperature-resistant wires for military industries such as aerospace and aviation, communication wires and cables. There are many specifications of PTFE oriented film. When customizing, it is necessary to produce a turned film according to the specification requirements, and then calender it. It can not play the role of calendering orientation. In addition, the temperature control of the calender is also a very important factor. The PTFE turned film is only within a certain temperature range, and the operation is relatively easy and the quality is guaranteed. The parallelism between the two rollers ensures that the oriented film has a uniform thickness.

  

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Figure 1: PTFE film source: Shenzhen Dankai

  Teflon oriented film calendering Teflon film needs to be packaged reliably during transportation to prevent damage, impact, extrusion, sun, and rain. Products should be stored in a clean warehouse that is not squeezed or exposed to direct sunlight. Inside. Pure PTFE has a pure white appearance and is easy to absorb variegated substances, which affects the appearance, increases the workload of rubbing and testing, and needs to be sealed for disposal.

  2. PTFE has many uses.

  2.1 Application of anti-corrosion performance

  As rubber, glass, metal alloys and other materials have defects in corrosion resistance, it is difficult to meet the harsh conditions of temperature, pressure and chemical media coexistence environment, the resulting losses are quite amazing. With its excellent corrosion resistance, PTFE material has become the main corrosion-resistant material in the petroleum, chemical, textile and other industries. Its specific applications include: conveying pipes, exhaust pipes, steam pipes for transporting corrosive gases, high pressure oil pipes of steel rolling mills, high, medium and low pressure pipes of aircraft hydraulic systems and cold press systems, refined towers, heat exchangers, kettles, towers, and tanks The performance of linings, valves and other chemical equipment seals has a great impact on the efficiency and performance of the entire machinery and equipment. Such as machinery, heat exchangers, high pressure vessels, large diameter vessels, pump groove flange seals, glass reaction pots, flat flanges, large diameter flange seals, shafts, piston rods, valve wheel pump seals Pieces and so on.

  

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Picture 2: PTFE tube source: Shenzhen Dankai

  2.2 Application of low friction performance in load

  Because the friction part of some equipment is not suitable for lubrication, for example, when the lubricating grease will be dissolved by the solvent and fail, or the products in the industrial fields such as papermaking, pharmaceuticals, food, textiles, etc. The most ideal material for mechanical equipment parts without oil lubrication (to bear the load directly). In civil construction projects, it is widely used as bridges, adjacent roads, steel structure roof trusses, large-scale chemical pipelines, and storage facilities.

  2.3 Application in electronic and electrical

  The inherent low loss and small dielectric constant of PTFE materials make it possible to make enameled wires for use in micro motors, thermocouple control devices, etc.; PIHE Pu membrane is ideal for manufacturing capacitors, radio insulating gaskets, insulated cables, motors and transformers Insulating materials are also one of the indispensable materials for aerospace and other industrial electronic components: oxygen sensors can be made, and fluoroplastics can be used to produce components on microphones, speakers, robots, etc., by using the characteristics of fluoroplastics to deviate from polar charges at high temperatures and high pressures; Using its low refractive index characteristics, optical fiber can be manufactured.

  Shenzhen DanKai Technology Co., Ltd. (ShenZhen DanKai Technology Co.,ltd.), whose predecessor is Dongguan Dandi Insulation Material Co., Ltd. Fluoroplastic Material Factory, 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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