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PFA tubes (perfluoroalkoxy) have excellent cracking and stress resistance and can be used when more demanding mechanical properties are required. PFA tubes are the product of choice for applications involving extremely high chemical resistance and exposure to high temperatures. If greater clarity, flexibility and higher continuous use temperatures are required, PFA tubes are preferred. PFA tubes are rigid and have a long bending life (up to 500�ºF) and have all the conventional properties of PTFE. In the semiconductor and pharmaceutical industries, PFA HP (High purity) tubing is used in fluid handling applications that require very low levels of chemically extractable matter.
Heat shrink tubing can combine various properties in a unique way Taken together, include: outstanding electrical characteristics, excellent Chemical and solvent resistance, high purity, lubricity and penetration Out of reliability. The double-layer fluoropolymer PTFE/FEP tube consists of a PTFE heat shrinkable outer layer and an FEP inner layer It is widely used and can be used with wires, cables, connectors, connectors, terminals, etc Tightly combined, with the role of moisture-proof. When the covered part is heated, PTFE contracts tightly onto the inlay while FEP melts and flows onto a solid or near-solid package, forming an extremely tight bond that can withstand maximum extension or vibration stress. double layer heat shrink tube has all the electricity of PTFE Gas, chemical and mechanical properties. Operating temperature up to 230 degrees. Our roll shrouds extend the life of the roll, enhance reliability and enhance the quality of the product. A little heat can be applied to the roll to form a layer of high strength, armor like a strong sheath, which protects the roll from chemical solvents, acids, shocks, wear, heat and moisture. It also eliminates the problem of viscous accumulation. During processing, only a convenient heat source, such as a heat gun, can be quickly and easily condensed onto the roll surface, and can be cleaned with solvents or reagents.
FEP tubes (polyperfluorinated ethylene propylene) are the preferred material for the production of small diameter tubes of continuous length. FEP sacrifices some heat resistance, but its chemical and dielectric properties are similar to PTFE. Tayak FEP tube is a transparent tube that is an economical choice for applications requiring chemical resistance and resistance to high and low temperature exposure. The excellent clarity of Taiyue FEP tubing makes it ideal for applications such as viewing glasses and flow monitoring. Taiyue FEP tubes have a slightly higher coefficient of friction, lower continuous use temperature, and are more transparent than PTFE. Tai Yue FEP pipes also have better gas and vapor permeability and have excellent UV transmittance ratings. FEP tubes are available in a variety of standard sizes, with custom sizes available on request. FEP tubes are also available in flexible tubes that can be ordered in a variety of size lengths, special sizes and colors to meet your needs.
In most situations, PTFE is an ideal choice for a wide range of applications. There are occasions, however, when additional fillers such as graphite, carbon, glass, bronze, and other materials are added to enhance PTFE products for use in a specific application. Generally speaking, these Filled PTFEs maintain their original chemical and thermal resistance characteristics, while also exhibiting improved strength, stability, and/or durability.
Everflon®PTFE (polytetrafluoroethylene) granular fluoroplastics are ideal for compression molding a wide variety of components and shapes; such as rods, tubes and sheets. Products fabricated from genuine Everflon® PTFE are unaffected by most chemicals and feature superior electrical, low friction and mechanical properties. Products manufactured with genuine Everflon® PTFE are rated for continuous service at 260°C (500°F).
Everflon Fluoropolymer PTFE Fine Powder Everflon® PTFE Fine Powder is soft, white polymers that are produced from PTFE aqueous dispersions. These fine powders possess the lowest coefficient of friction, the highest heat resistance, chemical resistance, electrical properties, and non-sticking properties of all fluoropolymers. It is uniquely capable of being sheared by lubricated paste extrusion into a coherent fibrous matrix with useful structural integrity.
If your temperature requirements are up to 260�°C (500�°F), PTFE tubes (polytetrafluoroethylene) are recommended. When terminated, it can be prevented from "melting" by soldering iron. Due to its excellent dielectric properties, it is widely used in electronic and electrical services. Another major advantage of PTFE tubes is their non-stick properties, allowing the material to be transported with minimal fluid resistance. Note, however, that PTFE reacts with fluorine, molten sodium hydroxide, and molten alkali metals. We have a full range of PTFE extrusion tubes for protecting wiring or transporting fluids in critical applications. PTFE tubes are available in a variety of configurations and custom designs. PTFE tubes have inherently excellent chemical resistivity and low coefficient of friction, and their performance is superior to that of glass and graphite, making them ideal materials for fluid transport. PTFE tubes can be used with almost all industrial solvents, chemicals and corrosive materials, and can be used in high-temperature processes. It can be steam sterilized without affecting its physical properties, such as surface hardness, elongation, deflection life or load deformation. PTFE tubes are usually translucent white, however, the whiteness varies depending on batch and wall thickness size. Colored PTFE tubes are also available and are often used to simplify tube wiring during system installation.
FEP (polyperfluorinated ethylene-propylene) is a fluorine plastic that can be processed by melting. FEP can be used in applications where the enhanced characteristics and temperature ratings of PFA are not required. FEP fluoroplastics are processed by conventional melt extrusion techniques as well as injection, compression, transfer and blow molding processes. FEP fluoroplastics are ideal for wire coating and molding a variety of end-use items and components. FEP offers the perfect combination of all fluoroplastic properties; Wide operating temperature range, excellent dielectric and electrical properties, low friction coefficient, low flammability and chemical resistance. FEP has a temperature range of up to 200�°C (392�°F).
EverflonTM PTFE Fine Powder is a milky white polymer which is separated from a dispersion formed by emulsion polymerization. Having a molecular structure of only carbon and fluorine atoms - (CF2-CF2)n - EverflonTM PTFE Fine Powder possesses the lowest coefficient of friction and the most superior heat resistance, chemical resistance, electrical properties and non-sticking property of any plastics. EverflonTM PTFE Fine Powder readily absorbs organic solvents, resulting in the formation of a paste, it can be extruded easily. It is widely used for the manufacture of insulated electric wires, spaghetti tubes, thin rods and unsintered tape.
Everflon® ETFE is a melt-processable copolymer of tetrafluoroethylene and ethylene. Everflon�® ETFE possesses a unique combination of desirable properties such as higher resistance to heat and chemical attack and outstanding physical toughness. It is processable by conventional extrusion, injection molding, rotomolding, rotolining, and electrostatic coating. It is available in a variety of forms including designated and powder. Application Wire and cable insulation, electrical components, coil forms, receptical sockets, connector insulators, extruded tubing, valves, fasteners, molded shapes and other end use components requiring a high performance fluoroplastic material.
FEP is a copolymer of TFE and HFP. It retains most of the desirable properties of PTFE, but the melt viscosity is low enough for conventional melt processing, and the melting point of FEP is 260 ° C, while the first melting point of PTFE is 340 ° C. The continuous operating temperature of FEP is 205â??, while that of PTFE is 260 FEP resins are available in a variety of grades to meet a variety of processing and end-use requirements. Different grades of FEP differ mainly in terms of molecular weight, but they all have the same use temperature, electrical properties, and chemical resistance. With the increase of molecular weight and melt viscosity, the mechanical properties and pressure cracking resistance also increase. However, these improvements come at the cost of processing difficulty and processing speed. Everflon offers improved grades that provide a better combination of pressure cracking resistance and processing speed
Everflon is a registered trademark of the C&F Group for its fluoropolymer resins.Everflon PTFE fluoropolymer resins are part of the C&F family of fluorine-based products that also includes Everflon FEPEverflon ETFE and verflontm PFA fluoropolymer resins and Everflontm PVDF fluoropolymers.These materials can be used to make a variety of articles having a combination of mechanical, electrical, chemical, temperature, and friction-resisting properties unmatched by articles made of any other material. Commercial use of these and other valuable properties combined in one material has established Everflontn resins as outstanding engineering materials for use in many industrial and military applications Everflon resins may also be compounded with fillers or reinforcing agents to modify their performance in use. The design and engineering data presented in this handbook are intended to assist the design engineer in determining where and how Everflontn resins may best beused. lt is recommended that the design engineer work closely with an experienced fabrica tor because the method of fabrication may markedly affect not only production costs, but also the properties of the finished article.
Everflon Fluoropolymer FEP Resin Everflon® FEP resin is a melt-processible copolymer of tetrafluoroethylene and hexafluoropropylene, without additives, that meets the requirements of ASTM D 2116 Everflon FEP fluoroplastics are processed by conventional melt extrusion techniques and by injection, compression, transfer and blow molding processes. Everflon FEP fluoroplastics are ideal for wire coating and molding a wide variety of end use articles and components. Everflon FEP offers an excellent combination of properties characteristic of all fluoroplastics; a wide service temperature range, exceptional dielectric and electrical properties, low coefficient of friction, low flammability and chemical resistance. Everflon FEP has a service temperature range, up to 200°C (392°F). While Everflon FEP can be fabricated into solid shapes and molded articles it is best known as an industry leading product line in the wire and cable industry where it is used for wire coating and cable jacket fabrication. Everflon FEP offers wire and cable OEMs a high performance fluoroplastic material with excellent electrical properties, ease of processing and consistent performance. The Everflon FEP product line is one the broadest in the industry. With Melt Flow Rates (MFR) from 3 to 30, and a wide range of application specific grades, Everflon FEP is uniquely positioned to offer exceptional performance in both general purpose and high speed wire and cable constructions.
Everflon FEP Aqueous Dispersion Everflon FEP D50 is an off-white aqueous fluorinated ethylene propylene (FEP) dispersion stabilized with a non-ionic surfactant. It is a general-purpose dispersion that can be used to impart some the unique properties of FEP to end products that would be difficult to make using traditional melt extrusion processes. It can be used to coat or impregnate porous structures, or to make thin films. It can be coated and melt bonded to polytetrafluoroethylene (PTFE) resin or used as a hot melt adhesive. The FEP resin in Everflon FEP D50 is a melt flowable thermoplastic, providing superior properties typical of fluoroplastic resins: retention of properties after service at 204 °C (400 °F) and useful properties at 240 °C (400 °F). Everflon FEP D50 aqueous dispersion provides: Inertness to nearly all industrial chemicals and solvents Stability at high temperatures Excellent dielectric properties Excellent weatherability Application Heat-sealable top coatings for PTFE-coated fabrics for belting, circuit boards, architectural fabrics, and electrical insulation Cast film for capacitor dielectrics or chemical barriers Hot melt adhesive for PTFE, PFA, and FEP parts Metal coatings Processing Conventional dip or flow techniques can be used for coating or impregnating high temperature fabrics, fibers, and other products with Everflon FEP D50. A FEP resin coating on woven fabrics made of fiberglass, fiber, or other high-temperature resistant fibers, can be made by dip coating. Successive passes may be necessary to build the desired thickness to produce a smooth, crack-free coating. Each coating layer is usually dried to remove water (typically at 120 °C [250°F]), baked to remove the wetting agent (typically at 270 °C [518 °F]), and then heated above the crystalline melting point of the resin particles (approximately 265 °C [509 °F]). If the Everflon FEP D50 is being used as a top coat over a PTFE-coated fabric or other parts, the coating must be heated to melt the PTFE (approximately 337 °C [639 °F]) to maximize adhesion. Other solid or liquid ingredients can be added to Everflon FEP D50 to provide specific processing or finished product behavior
EverFlon ®PTFE Dispersion Fine Powder F500 is a soft white polymer made from a water-based dispersion of PTFE. These fine powders have the lowest coefficient of friction, highest heat resistance, chemical resistance, electrical properties and non-stick properties of all fluoropolymers. It has the unique ability to shear a lubricating paste by extruding it into a bonded fiber matrix with useful structural integrity. EverFlon ®PTFE F500 is designed for machining at medium and high pressure rates from 100:1 to 600:1. It is particularly suitable for the production of high quality tubes, spiral tubes and wire coatings. This grade is also well suited for post-processing techniques such as flanging, welding, blow molding and turning. Processing suggestion EverFlon ®PTFE F500 is extruded using liquid processing AIDS such as naphtha. During the paste extrusion process, the powder is mixed with a lubricating agent and then compressed under light pressure (1.5-2.0 MPa[220-290 psi]) into a cylindrical pre-formed bad material. The preformed blank is placed into the barrel of the paste extruder, where the composition is passed through a finishing die under high pressure to produce foaming, tubing or wire coating. After extrusion, the product has a low density but coherent fiber structure. PTFE F500 is usually processed under heat in a step-by-step process into solid resin products, such as tubes. Heating is carried out in two steps, either simultaneously with extrusion or separately. Usually the lubricant must be removed first by heating in a temperature range of 100-300°C(212-572°F). A sintering step is then performed to melt the resin above its melting point of approximately 342°(648°F) and produce a non-porous solid PTFE resin.
Fluoron PTFE fine powder F100 is a soft, white polymer made from an aqueous dispersion of PTFE. These fine powders have the lowest friction coefficient of all fluoropolymers and the highest heat resistance, chemical resistance, electrical properties and non-stick properties. It has the unique ability to shear a lubricating paste by extruding it into a bonded fiber matrix with useful structural integrity. Fluoron PTFE F100 is designed for machining with low compression ratios of 10:1 to 300:1. It aims to promote the production of high-quality, low-density tapes Processing suggestion PTFE F100 is extruded using liquid processing AIDS, such as naphtha. During the paste extrusion process, the powder is mixed with a lubrication agent and then compressed under light pressure (1.5-2.0 MPa[220-290 psi]) into a cylindrical preformed blank. The preformed blank is placed into the barrel of the paste extruder, where the composition is passed through the finishing mold under high pressure to produce foaming, tubing or wire coating. After extrusion, the product has a low density but coherent fiber structure. PTFE F100 is usually further processed under heat into solid resin products, such as tubes. Heating is carried out in two steps, either simultaneously with extrusion or separately. Usually the lubricant must be removed first by heating in a temperature range of 100-300°C(212-572°F). A sintering step is then performed to melt the resin above its melting point of approximately 342°C(648°F) and produce a non-porous solid PTFE resin.
Wuhan Qingshuilvyuan Environmental Protection Co.,Ltd. It focus on refractory industrial wastewater treatment. The solution is lower in Capex and Opex. Moreover,land area is 40% smaller than all others. Key equipments and technology: 1) Compound MBBR System Biological tank will be 30% smaller,but 10%~30% higher COD,BOD removal rate. 2) No tank Magnetic flocculation clarifier. No civil work equipment with 99% SS removal rate,no chemical consumption. 3) Magnetized Fenton Advanced Oxidation. 10% higher effect than conventional Fenton and less chemical and energy consumption. 4) Tubular membrane and UF system. Max 500L/m2.h flux and outlet NTU 0.1. 5) Hybrid ABR. Higher efficiency than conventional ABR,IC,UASB etc. 6. Packaged wastewater treatment plant. Thank you.
Fenton advanced oxidation technology is widely used in the treatment of refractory organic wastewater. Because it produces strong oxidizing OH (hydroxyl radical), which can rapidly oxidize and decompose the complex organic pollutant molecules, so its application is wide. The efficiency of Fenton oxidation mainly depends on the yield of �·OH (hydroxyl radical). The more and higher concentration, the higher removal rate of organic pollutants. According to the theory of free radical pairs,free radicals are always emerge in pairs.In some cases free radicals recombine,which reduces OH and reduces reaction efficiency. The recombination can only occur between "singlet state" free radical pairs.When there is no "singlet state" free radical that it cannot recombine,free radical reaction can only performed outside the cage. With the effect of an external magnetic field, the probability of the single state form is less,and the radical pair recombination is less. This facilitates higher reaction efficiency. We modified Fenton reagent technology by using the reaction in a certain strength magnetic field. 1. Reaction rate is doubled.Magnetized Fenton reagent advanced oxidation technology emerges higher rate .OH.The reaction is faster,HRT is shorter,and equipment footprint is smaller. 2. Higher COD removal rate.Magnetic Fenton reaction has 10% more COD removal rate. 3. Less chemical consumption.Magnetic field can reduce the recombination of free radicals,which indirectly reduces chemical consumption. 4. After sewage is magnetized, the physical and chemical properties will change to a certain extent,such as pH,viscosity,diffusion coefficient, surface tension,electrical conductivity, etc., which can affect the process of dissolution, crystallization, polymerization, wetting,agglomeration, solidification, and precipitation. And the metabolic processes of biological systems also have effect.Magnetic field also has an obvious memory effect on water.It changes the physical and chemical properties of the sewage and weakens the cage effect of the solution, which facilitates the out-of-cage reaction reduces the probability of recombination of free radicals, and also facilitates the smooth progress of the reaction.
