PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
How high is the temperature resistance of PTFE heat shrinkable tube
Classification:
Industry dynamics
Author:
PFA tube little sister
Source:
PFA tube little sister
Release time:
2006-10-21
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Teflon heat shrinkable tube normal use temperature:-65 ℃ ~ 260 ℃ at a high temperature of 300 ℃ Teflon normal work for two hours is completely no problem. Teflon heat shrinkable tube also known as Teflon heat shrinkable tube.
Teflon heat shrinkable tube made of high quality Teflon [PTFE PTFE] extrusion sintering:
Teflon heat shrinkable sleeve not only has the common advantages of ordinary heat shrinkable tube, but also has excellent characteristics of fluoropolymer.
Teflon heat shrinkable sleeve is made of PTFE, the best fluoropolymer.
The advantages of Teflon heat shrinkable sleeve are: high temperature resistance, chemical corrosion resistance, not easy to be broken, low moisture absorption, high temperature can quickly and completely shrink.
PTFE heat shrinkable tube has excellent electrical insulation, high flame retardant and self-lubricating properties, resistance to ultra-high temperatures and chemical reagents, and resistance to almost all oils and chemicals. PTFE heat shrinkable tube is widely used in automobile, military, aerospace, electronic chemical and other fields.
Figure 1: PTFE Heat Shrink Tube Source: Shenzhen Dankai
Teflon tube for 2. transformer
Teflon tube product features
1. High chemical stability: It can withstand all strong acids, including aqua regia, hydrofluoric acid, concentrated hydrochloric acid, nitric acid, fuming sulfuric acid, organic acids, strong bases, strong oxidants, reducing agents and various organic solvents. Ideal for high purity chemical feeding use.
2. Low friction coefficient: The friction coefficient is generally only 0.04, which is a very excellent self-lubricating material, and the friction coefficient does not change with temperature. 3
3. Excellent anti-adhesion, the inner wall of the tube is not easy to adhere to colloids and chemicals.
4, excellent aging resistance, can be used outdoors for a long time.
5. Excellent electrical insulation properties: PTFE is a highly non-polar material with good dielectric properties, great resistance, and a dielectric constant of about 2.0, which is the smallest among all electrical insulation materials.
Part of the tube has high transparency and can easily observe the internal fluid condition.
Transformer bushing is the main insulation device outside the transformer box, the outgoing line of the transformer winding must pass through the insulation sleeve, so that the outgoing line between the outgoing line and the insulation between the outgoing line and the transformer shell, while the role of fixed outgoing line.
Due to different voltage levels, the insulating sleeve has the form of pure porcelain sleeve, oil-filled sleeve and capacitor sleeve. Pure porcelain bushing is mostly used for transformers of 10kV and below. It wears a conductive copper rod in the porcelain bushing and is air insulated in the porcelain bushing. Oil-filled bushings are mostly used in 35kV transformers. They are used to fill oil in porcelain bushings, wear a conductive copper rod in porcelain bushings, and the copper rod is coated with insulating paper. Capacitor bushing is used for high voltage transformers above 100kV and consists of main insulated capacitor core, outer insulated upper and lower porcelain, connecting sleeve, connecting sleeve, oil pillow, spring assembly, base, equating ball, measuring terminal, terminal, rubber washer, insulating oil and other components.
With the development of China's power industry, the power supply is increasing year by year, and power transformers are gradually developing in the direction of high voltage and large capacity. At the same time, due to the improvement of manufacturing technology, the insulation distance of each part of the transformer product is gradually reduced, so that the capacitor bushing as a transformer supporting product has stricter requirements on its appearance and size.
Figure 2: Teflon tube Source: Shenzhen Dankai
At present, many transformer bushings use Teflon tubes, because Teflon has excellent performance, meets the insulation conditions required for transformers, and has high temperature resistance, corrosion resistance, acid and alkali resistance, and friction resistance.
3. white Teflon board manufacturers
PTFE plate (also called PTFE plate, Teflon plate, Teflon plate) is divided into two kinds of molding and turning. The molded plate is made of PTFE resin at room temperature by molding, and then sintered and cooled. The PTFE turning plate is made of PTFE resin by pressing, sintering and rotary cutting. Its products are widely used and have excellent comprehensive properties: high and low temperature resistance (-192 ℃-260 ℃), corrosion resistance (strong acid, strong alkali, aqua regia, etc.), weather resistance, high insulation, high lubrication, non adhesion, non toxic and other excellent characteristics.
PTFE plate (also called PTFE plate, Teflon plate, Teflon plate) is divided into two kinds of molding and turning. The molded plate is made of PTFE resin at room temperature by molding, and then sintered and cooled. PTFE has excellent comprehensive properties: high and low temperature resistance (-192 ℃-260 ℃), corrosion resistance (strong acid, strong alkali, aqua regia, etc.), weather resistance, high insulation, high lubrication, non adhesion, non toxic and other excellent characteristics. Polytetrafluoroethylene (English abbreviation Teflon or [PTFE,F4]), is known as/commonly known as "plastic king", Chinese trade name "Teflon", "Teflon" (Teflon), "Teflon", "Teflon", "Teflon", "Teflon" and so on.
It is a polymer compound formed by the polymerization of tetrafluoroethylene. Its structure is-[-CF2-CF2-]n-, which has excellent chemical stability and corrosion resistance (PTFE or F4 for short, is one of the most corrosion-resistant materials in the world today. "Plastic King" is commonly known as PTFE. It is a plastic with the best corrosion resistance. Polytetrafluoroethylene itself is not toxic to humans, but one of the raw materials used in the production process, ammonium perfluorooctanoate (PFOA), is considered to be carcinogenic.
Temperature -20~250 ℃(-4~482 °F), allowing quenching and quenching, or alternating hot and cold operation.
Pressure -0.1~6.4Mpa (full vacuum to 64kgf/cm2)
It has solved many problems in China's chemical, petroleum, pharmaceutical and other fields. PTFE seals, gaskets, gaskets. 3. PTFE seals and sealing gaskets are made of suspension polymerization PTFE resin molding. Compared with other plastics, PTFE has the characteristics of chemical resistance, it has been widely used as a sealing material and filling material.
Shenzhen Dankai Technology Co., Ltd. (ShenZhen DanKai Technology Co., Ltd.), whose predecessor was the Fluoroplastic Material Factory of Dongguan Dandi Insulation Material Co., Ltd. established in 1998, specializes in the research and development, production and sales of FEP, PFA, PTFE and other fluoroplastic tube rod sheet membrane products and other insulation materials. The company has international standards of senior R & D team and the introduction of foreign fluorine plastic products production line. Some fluoroplastic products through ISO9001, SGS, FDA certification, Huawei, Foxconn, the United States, ZTE, Intel, AirTAC and other domestic and foreign cooperation customers fully affirmed. The company's main products are: ① pipes: Ptfe pipes, Fep pipes, Pfa pipes, Pvdf pipes; ② Heat shrinkable tubes: Ptfe heat shrinkable tubes, Fep heat shrinkable tubes, Pfa heat shrinkable tubes, Pvdf heat shrinkable tubes; ③ Plate rod film: Ptfe plate rod film, Feep plate rod film, Pfa plate rod film, Pvdf plate rod film, etc. PE: PE, special, spiral tube, spring tube, rotary cutting tube, welding rod, tee, straight, gasket, joint, cone rod, flared tube, sealing tube, braided tube, corrugated tube, etc. At the same time can be customized according to customer requirements processing production of various specifications of fluorine plastic products.
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