What type of polymer is teflon




















Teflon is a synthetic polymer containing carbon and fluorine called polytetrafluoroethylene. There is no winner, no better product and no reason to compare the two substances any further.

Northern Engineering Sheffield Ltd. How Do O Rings Work? Published 3rd July By Samuel Bramwell. What is PTFE? Low coefficient of friction : The coefficient of friction of PTFE is one of the lowest of any solid in existence, meaning nothing will stick to it. For this reason, the molecules at the surface of a piece of PTFE will repel the molecules of just about anything that tries to come close to it.

This is why nothing sticks to PTFE. Because it's non-stick, PTFE means you can fry things without grease or butter. This means less fat and cholesterol, for a healthier heart. The Big Question The question remains then: If nothing will stick to this stuff, how does it stick to the surface of the frying pan?

DuPont knows, but they're not telling! So, a while back we had a "What do you think? We received a bunch of neat ideas and you can read some of them along with our comments right here.

Before you go there, though - think about it first - how would you get PTFE to stick to the pan? Both the paste and powder are used in coating applications. Teflon con be used on a wide variety of cookware. Quality control measures take place both at the primary PTFE manufacturing facility and at plants where further processing steps, such as coatings, are done.

In the primary manufacturing facility, standard industrial procedures are followed to determine purity of ingredients, accuracy of temperatures, etc. End products are tested for conformance to standards. For dispersion PTFE, this means the viscosity and specific gravity of the dispersion is tested. Other tests may be performed as well. Because Teflon is a trademarked product, manufacturers who wish to use the brand name for parts or products made with Teflon PTFE must follow quality control guidelines laid down by Du Pont.

In the case of nonstick cookware manufacturers, for example, the cookware makers adhere to Du Pont's Quality Certification Program, which requires that they monitor the thickness of the PTFE coating and the baking temperature, and carry out adhesion tests several times during each shift.

Though PTFE itself is non-toxic, its manufacture produces toxic byproducts. These include hydrofluoric acid and carbon dioxide. Work areas must be adequately ventilated to prevent exposure to gases while PTFE is being heated, or when it cools after sintering.

Doctors have documented a particular illness called polymer fume fever suffered by workers who have inhaled the gaseous byproducts of PTFE manufacturing. Some waste created during the manufacturing process can be reused. Because PTFE was at first very expensive to produce, manufacturers had high incentive to find ways to use scrap material. Waste or debris generated in the manufacturing process can be cleaned and made into fine powder.

This powder can be used for molding, or as an additive to certain lubricants, oils, and inks. Used PTFE parts should be buried in landfills, not incinerated, because burning at high temperatures will release hydrogen chloride and other toxic substances. One study released in claimed that PTFE also degrades in the environment into one substance that is toxic to plants. This is trifluoroacetate, or TFA. While current levels of TFA in the environment are low, the substance persists for a long time.

So TFA pollution is possibly a concern for the future. Ebnesajjad, Sina. Friedel, Robert, and Alan Pilon. Gorman, J. Toggle navigation. Made How Volume 7 Teflon Teflon. Periodicals Friedel, Robert, and Alan Pilon. Angela Woodward. Other articles you might like:.

User Contributions: 1. Can you plesae tell the chemical reaction of teflon coatings with Zinc alloys. Comment about this article, ask questions, or add new information about this topic: Name:. E-mail: Show my email publicly. Human Verification:.



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