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Comparison of the difference between the two after PFA tube is made into pfa winding tape
- Categories:Industry news
- Author:PFA tube lady
- Origin:PFA tube lady
- Time of issue:2008-04-19 15:21
- Views:
Comparison of the difference between the two after PFA tube is made into pfa winding tape
- Categories:Industry news
- Author:PFA tube lady
- Origin:PFA tube lady
- Time of issue:2008-04-19 15:21
- Views:
The English name of PFA is: Polyfluoroalkoxy, and the Chinese name is: tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (also known as: perfluoroalkylate, soluble polytetrafluoroethylene). The chemical properties of PFA FEP PTFE are similar, but FEP can only be used below 200 degrees, and PTFE cannot be injection molded. Specific gravity: 2.13-2.167 g/cm3, molding shrinkage rate: 3.1-7.7%, molding temperature: 350-400℃.
Features and main uses of PFA: PFA is commonly known as fusible PTFE, and its various properties are the highest among fluoroplastics. It is widely used in the semiconductor industry, as well as medical, chemical anti-corrosion, automotive and other fields.
2. Introduction to pfa tube
The PFA tube is a copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene. The smooth inner tube has good fluidity, has a large flow rate, and inhibits particle aggregation. The white PTFE tube is made of FDA food-grade food-grade hose, non-toxic material, and the sanitary hose is chemically inert and will not release odor-contaminated fluid. Excellent weather resistance, not easy to burn; non-sticky surface, easy to disinfect, clean with steam or detergent; PFA tube working pressure range: -54℃～232℃ sanitary hose. The melt adhesion is enhanced, the melt viscosity is reduced, and the performance is unchanged compared with polytetrafluoroethylene. This kind of resin can be directly processed into products by ordinary thermoplastic molding methods. Suitable for making corrosion-resistant parts, wear-reducing and wear-resistant parts, seals, insulating parts and medical equipment parts, high-temperature wires, cable insulation, anti-corrosion equipment, sealing materials, pump valve bushings, and chemical containers.
PFA features:
(1) Crystal material, low moisture absorption. It can be processed into products by thermoplastic processing methods.
(2) The fluidity is poor, and it is easy to decompose, and corrosive gas is generated during decomposition. The molding temperature does not exceed 475°C, the mold is heated to 150-200°C, and the pouring system has low resistance to material flow.
(3) Translucent pellets, injection molding and extrusion molding. Molding temperature 350-400℃, 475℃ and above will easily cause discoloration or blistering. Pay attention to the difficulty of demolding.
(4) Due to the corrosion effect of molten material on metal, long-term production requires chrome plating on the mold.
Physical properties of PFA tube:
1. Copolymer of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene. Compared with PTFE, the performance of this resin can be directly processed by ordinary thermoforming.
2. Its creep resistance and compressive strength are better than PTFE, the tensile strength is higher, and the elongation rate can reach 100-300%. Good dielectric properties and excellent radiation resistance, high flame retardancy.
3. Long-term use temperature -80-200 degrees, excellent chemical corrosion resistance, all chemical corrosion resistant cushions, friction coefficient in plastics, and good electrical properties, and its electrical insulation is not affected by temperature.
4. Its chemical resistance is similar to polytetrafluoroethylene, better than vinylidene fluoride.
3. Brief introduction of pfa winding pipe
Winding pipe, large-diameter winding pipe, double-wall winding pipe, hollow winding pipe is a kind of high-density polyethylene (HDPE) as raw material, a kind of pipe formed by winding and welding, due to its unique forming process, can produce up to diameter 3 meters of pipe, which is difficult to complete with other production processes. High-density polyethylene (HDPE) not only guarantees the product molding process and product quality due to its excellent welding performance, but also provides a variety of reliable methods for construction connection, such as electric heat welding, heat shrinkage connection, etc., at the same time, this It is also an important reason why leakage rarely occurs. It is precisely for this reason that this pipe has unique environmental protection functions that other pipes do not have. This provides a very effective method for pollution prevention and control that people are currently concerned about.
The winding tube is spiral, with good elasticity and tensile force, and can play a good role in restraining internal products such as hydraulic hoses, wires and cables. At present, the raw materials used in the country are polypropylene (PP), polyethylene (PE) or nylon (PA), which makes the products have good wear resistance. In addition, the winding management also has good high and low temperature resistance, oil resistance, UV resistance, antistatic, impact resistance, tensile resistance and other properties.
Four, pfa winding pipe application scenarios
With the advancement of science and technology, PFA tube products have been widely used and have excellent comprehensive properties. It is composed of polytetrafluoroethylene polymer and its structure is simple. PFA tube is mainly used in machinery, electronics, automobile, aerospace, chemical industry and other industries. Since PFA tube capillary has a wide range of applications, what products can it produce?
PFA tube products are very extensive, the main products are anti-corrosion, seals, bearings, etc.
Anti-corrosion: PFA tube is a new material through vertical and horizontal bidirectional stretching in a large number of pores. It will be combined with other fabrics. PFA tube can be made into smoke solid phase anti-corrosion filter bag or good waterproof, breathable, wind and rain heating Sports clothes, cold clothes, special protective clothing and light tents, compressed air for pharmaceuticals, sterile filtration of various solvents and high-purity gas filtration in the electronics industry.
Sealing: The winding pipe is mainly used for the protection of various construction machinery and mining hydraulic equipment and the protection of wires and cables with abrasion resistance requirements. Because it can completely cover the product to be protected, it forms an effective abrasion and anti-ultraviolet protective effect, which protects the body of many rods.
In addition, pfa winding pipes are also widely used in high-pressure epoxy winding pipes, various types of pipes for flue gas desulfurization, fire-fighting pipelines, chemical pipelines, underground/ground oil storage tanks, wind turbine blades and high-pressure epoxy winding pipe manufacturing equipment.
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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