Chemical Applications of PTFE

PTFE is utilized broadly as a part of a wide range of commercial ventures:

Petrochemical and chemical processing: PTFE is the material of decision for gaskets, vessel linings, pump insides, washers, rings, seals, spacers, plunge tubes and well-boring parts in light of the fact that it is erosion safe and artificially dormant; it is unaffected by practically all acids and caustics and capacities in situations to 500 degrees F.

Electrical applications: PTFE is one of the best separators known. In slender segments, it will protect to 500 volts for each mil. There are evaluations of PTFE which have significantly more prominent dielectric quality. It is regularly utilized as a part of the wire and link wrap, and to discrete conductive surfaces in capacitors. Thick walled close-resistance expelled tubing is the PTFE state of decision where machining or penetrating, long lengths to close tolerances is unthinkable. Multi-gap tubing can be expelled. PTFE can be machined into standoff protectors, and a wide range of sorts, of high voltage epitome gadgets for electrical segments. PTFE bush manufacturer India provides the best products.

Semiconductor Industry: PTFE is dormant, and its working temperature, extent is from less 350 degrees Fahrenheit to 550 degrees Fahrenheit. At the point when made to ultra immaculate norms, it is the material of decision for different things utilized as a part of chip assembling, including embodiment gadgets for quartz warmers, and so forth.

Nourishment, Beverage and Pharmaceutical commercial enterprises: Virgin PTFE is endorsed by the Food and Drug Administration for use in the sustenance, refreshment, beautifiers and pharmaceutical businesses. Slender Film and sheets make an ideal, no-harmful side surface without infinitesimal sorrows where microorganisms can develop. Conveyancing segments — profiles, aide rails and slides — can withstand high temperatures inside preparing and drying stoves and other warmed portions of the sustenance, beautifiers or pharmaceuticals assembling procedures.

Lab applications: PTFE channeling, tubing and vessels are utilized as a part of the different lab product in view of their concoction resistance, and dormancy. No contaminants hold fast to the surface.

Bearing pads: Glass filled PTFE can cut or stamped into bearing cushions, and will oppose all climate related corruption while remaining an ideal interface between dissimilar development materials, similar to steel and cement.

PTFE Compounds: Various fillers can be mixed with the PTFE base sap to improve certain properties, e.g. glass fiber, glass dabs, carbon, graphite, molybdenum disulfide, bronze, and so forth.

 

UHMW Polyethylene Film


UHMW Polyethylene Film has extremely high abrasion resistance, exceeding the abrasion resistance of steel. Coupled with broad chemical resistance and low coefficient of friction makes UHMW an extremely versatile engineering material for many severe service applications. Slippery like Teflon® Fluoropolymer, but super abrasion & wear resistant. UHMW Polymers have a molecular weight average 10 times that of conventional high density polyethylene resins. Higher molecular weight gives UHMW Polymers its unique combination of characteristics Applications: Inner and outer surfaces for potable water, chemical, fuel and hydraulic hoses, bottom surfaces for skis and snow boards, linings for chutes to decrease friction and wear.

Features of UHMW Film

The highest abrasion resistance of any thermoplastic polymer
Outstanding impact strength even at very low temperatures
An excellent sliding material due to the low coefficient of friction
Self-lubricating (non-caking and sticking)
Sound dampening properties
Good chemical and stress cracking resistance
Easily machined
FDA and USDA approved

UHMW has a very low coefficient of friction and is used in sliding bearing applications where load and temperature are not high. We find that UHMW is used in belting as a structural support layer, and also in automotive rubber profiles as a wear and friction reducing layer.

Why Choose PTFE lined hose?

What is PTFE? Polytetrafluoroetheylene is the specific chemical name for Teflon. PFTE is a special product to make industrial hosing from as it does not breakdown with exposure to corrosive acids, even when hot. It does not dissolve due to solvent exposure; does not become fragile and breakable when exposed to extreme cold (ex: -240 degrees Celsius).
PTFE lined hose
What sets PTFE lined hose with stainless steel reinforcement apart from other types of industrial hoses?
Outstanding performance under severe application conditions.
More economical choice than traditional products when total lifecycle-cost is considered.
PTFE lined hoses will outlast an ordinary rubber or thermoplastic hose under virtually any operating condition.
Durability and Flexibility of PTFE Lined Hose
PTFE lined hoses have longer-lifecycles.
Excellent for various chemicals at higher temperatures, within a wide range of pressure, without breaking down – please see our chemical matrix and product specification information for compatibility.
Higher temperatures:  Rated from  -100° F to 500°F.
Higher pressures from 500psi to 3500psi.
PTFE lined hose is very flexible and well suited for continuous processes involving motion & vibration.

What is PTFE?(Polytetrafluoroethylene)

Polytetrafluoroethylene (PTFE) is a synthetic material accidentally invented in the late 1930s while a chemist was endeavoring to develop a new type of perfluorethylene-based refrigerant. Rather than achieving a chlorofluorocarbon, the scientist was surprised to find that the perfluorethylene used in the process reacted with the iron content of its container and polymerized under pressure. Less than a decade later, this new material was being distributed on a commercial scale and was eventually patented under the name Teflon®. It would be another 20 years before this material would hit the frying pan and become known as the first non-stick coating for cookware, however. In fact, this material was used for a variety of other purposes at first.
During World War II, PTFE was used to prevent the escape of radioactive materials from the facility designated to produce the first atomic bomb in the U.S., an objective dubbed as the Manhattan Project. This facility represented an impressive piece of real estate with more 2,000,000 square feet (609,600 sq. meters) in which to house uranium hexafluoride. Not only is this substance highly toxic and corrosive in its own right, but it also forms a dangerous gas known as hydrogen fluoride in the presence of water or water vapor. For this reason, PTFE was used as a coating for pipefittings to make them leak proof.
The exceptional insulating properties of this material made its use in electronic components ideal. For one thing, it is non-conductive, making it resistant to high electric fields. It is also highly resistant to water, heat, and chemical corrosion. In fact, it continues to be used to produce laboratory equipment and accessories that come into contact with hydrofluoric acid, which would otherwise dissolve other materials, even glass.
PTFE also possesses very low frictional properties, which is expressed as frictional coefficient. This measurement is relative and differs according to the materials brought into contact to generate or simulate friction. In terms of plastics, friction is usually observed against polished steel. To put the low friction coefficient of PTFE into proper perspective, it is the only known synthetic surface material to which the toe pads of a gecko fail to stick. This quality makes it suitable for manufacturing parts that need to resist friction, such as gears and ball bearings.
This material was eventually introduced to American households by Marion Trozzolo, founder of Laboratory Plasticware Fabricators. While Trozzolo had been producing Teflon®-coated scientific tools for a number of years, he became inspired by a French engineer who found it such an effective non-stick coating for his fishing gear that he later treated his wife’s pots and pans with it. While this experiment led to the production of cookware known as Tefal (T-Fal®) in France in the mid-1950s, Trozzolo became the first U.S. producer of Teflon®-coated cookware. In fact, "The Happy Pan," launched in 1961, earned a place of historical significance in the Smithsonian Institute and Trozzolo a name of distinction in the Plastics Hall of Fame.

Teflon® PTFE Sheet Applications and Images Show

PTFE sheets are slippery shiny white materials. The characteristic features of PTFE sheets determine its uses. The following are some of the applications of PTFE sheets:
  1. PTFE sheets are a multifunctional material mainly used in sublimation and/or heat press industry. Its non-sticky feature makes it important in this industry. Its function is used to prevent ink from staining the platen parts of the heat press machine, thus eliminating the chances of scorching the product and keeps the heat transfers from sticking to the platen. Moreover, PTFE sheet is used to prevent ghosting effect during sublimation process created when the paper slides across the shirt when the platen is being lifted. It can also be used as a weight to keep the transfer paper in its place to ensure good results. PTFE sheets are reusable and can last up to a maximum of 200 presses, hence PTFE sheets can last for long time.
  2. It is used in beverage, food, and pharmaceutical industries. PTFE sheets have been approved by Food and Drug organization for use in this industry. This is because the thin film sheets are inert and non-toxic, hence when used to cover food, it cannot react. In addition, it withstands high temperatures. Therefore, PTFE sheet has the ability to conserve the warmth and maintain the temperature of the covered food for a long time.
  3. PTFE sheets are excellent electrical resistant, making it suitable for applications in the electrical industry. They are used to provide electrical insulation where it can insulate up to 500 volts per mil. It is frequently used to wrap electrical wires and cable. Moreover, it is used to separate conductive plates in capacitors.
  4. PTFE sheets are used in petrochemical and chemical industries. It is used to make vessel linings, gaskets, rings, pump interiors, dip tubes, washers, seals, spacers, chemical tanks, etc. This is because PTFE sheets are chemically inert, melts at high temperatures and resistant to corrosion. This makes them unaffected by caustics or acids, and it can be used in high temperature environment of up to 500 degrees Celsius.
  5. In addition, the inert and chemical resistance nature of PTFE sheets makes it suitable for laboratory applications. Therefore, it is used to make the lining of special pipes, tubes, glasses, vessels and lab counter tops.

IMAGES FOR PTFE SHEETS

 

ptfe sheets

 

ptfe sheets

Why Use PTFE Convoluted Hose?

PTFE hose is ideally suited for applications requiring maximum flexibility, high-pressure ratings, chemical and temperature resistance, and extremely long life. PTFE hose offers the following advantages:
Flexible–The flexibility of PTFE hose provides excellent resistance to failure in fatigue and flexing applications.
Chemical Resistant–PTFE is inert, thus creating a nearly “universal” hose capable of handling the broadest range of applications.
Temperature Resistant–It even handles steam–up to +388°F.
Non-Stick–PTFE hose is easily cleaned to maintain batch purity when using one hose for several services.
Low Friction–PTFE hose exhibits low-pressure drop that remains constant because no deposits accumulate on the inside wall of the hose.
Moisture Resistant–Ideal for pneumatic systems requiring low dew point.
Non-Aging–Properties of PTFE hose do not change with age or exposure to weather.

EXAMPLE OF PTFE APPLICATIONS

Molding–PTFE hose handles steam up to 388°F @ 200 psi steam pressure for heating of plastic and rubber molding presses.
Urethane Foam Manufacturing–PTFE hose handles isocynates and other activators at the high pressures in foam manufacturing processes.
Gas Transfer/Breathing Apparatus–PTFE hose exhibits low permeability to 02, N 2, & Argon under high pressure.
Marine Hydraulic Control & Power Systems–PTFE hose is resistant to fire resistant and water emulsion hydraulic fluids used in marine systems.
Steam Applications–PTFE hose is ideal for use on heating lines on dryers in processing plants and as lines that provide steam to laundry garment presses.
Fuel Lines–PTFE, when used as a fuel hose, is resistant to the blending of additives in fuels. 
Compressor Discharge Hose–With most compressor discharge applications operating above 300°F, PTFE hose is the obvious choice over rubber hose. Less carbon particles deposit on PTFE due to its inherent release properties.
Chemical Handling–PTFE hose solves chemical handling problems – whether its low permeability or low buildup–in leading stations, on flexible connections between chemical pipework, and in laboratories.
Adhesives–PTFE hose handles the adhesives that are present in shoe manufacturing, canning operations, and carbon manufacturing.

WHY USE PTFE CONVOLUTED HOSE?

  • Increased flexibility
  • Tighter bend radius:
PTFE Hose​
  • Operating temperature -65°F (-54°C) to +400°F (+204°C)
  • Available in a wide size range (-8 to -32) when compared to smooth-bore hose.
  • Spun polyester hose with advanced abrasion resistance is available.
  • Conductive tube to dissipate electric charge buildup is available
 

Polytetrafluoroethylene - PTFE

PolyTetraFluoroEthylene is a fluorocarbon-based polymer and is commonly abbreviated PTFE. Several other manufacturers make their own brands of PTFE which can often be used as substitute materials. This fluoroplastic family offers high chemical resistance, low and high temperature capability, resistance to weathering, low friction, electrical and thermal insulation, and "slipperiness". ( see also Teflon® PTFE and Teflon® FEP & PFA Specifications ) PTFE's mechanical properties are low compared to other plastics, but its properties remain at a useful level over a wide temperature range of of -100°F to +400°F (-73°C to 204°C). Mechanical properties are often enhanced by adding fillers (see paragraph below). It has excellent thermal and electrical insulation properties and a low coefficient of friction. PTFE is very dense and cannot be melt processed -- it must be compressed and sintered to form useful shapes.
PTFE's mechanical properties can be enhanced by adding fillers such as glass fibers, carbon, graphite, molybdenum disulphide, and bronze. Generally, filled PTFE's maintain their excellent chemical and high temperature characteristics, while fillers improve mechanical strength, stability, and wear resistance. The properties of 25% glass-filled and 25% carbon-filled PTFE grades are shown below for comparison purposes. There are literally dozens of different filled PTFE products and grades -- too many to be listed here. 
TYPICAL PROPERTIES of PTFE
TYPICAL PROPERTIES of PTFE
NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets . All values at 73°F (23°C) unless otherwise noted.