What is perfluorinated polyether?

PFPE (perfluorinated polyether) is a long-chain polymer made up of carbon, oxygen and fluorine. Due to the strong carbon- fluorine bond, the PFPE chain structure is extremely well protected and hence highly inert.

What is perfluorinated used for?

Perfluorinated compounds (PFCs) are a large group of chemicals used in numerous applications, including stain repellents for textiles, additives to paper products, and aqueous film forming foams (AFFFs) used to fight electrical fires [97–100].

Is PTFE a perfluorinated compound?

Perfluorinated compounds are used ubiquitously: For example, fluorosurfactants are widely used in the production of teflon (PTFE) and related fluorinated polymers. Chlorofluorocarbons are perfluorinated compounds that were formerly used as refrigerants (Freon) until they were implicated in ozone degradation.

What is a PFC chemical?

Perfluorochemicals (PFCs) are a group of synthetic chemicals that have been used in many. consumer products.1 The structure of these chemicals makes them very stable, hydrophobic. (water-repelling), and oleophobic (oil-repelling).

Is PFC bad for environment?

‘Long-chain PFCs are found world-wide in the environment, wildlife, and humans. They are bioaccumulative in wildlife and humans, and are persistent in the environment. They are toxic to laboratory animals and wildlife, producing reproductive, developmental, and systemic effects in laboratory tests.

Where are perfluorinated chemicals found?

PFCs have been found in rivers and lakes and in many types of animals on land and in the water. How people can be exposed to PFCs is as yet unclear. Some PFCs persist in the environment, and people are mostly likely exposed by consuming PFC-contaminated water or food.

How do perfluorinated compounds enter the body?

PFCs may also enter the body by ingestion of dust and dirt particles and by contact with products that have been treated with substances that contain PFCs or its precursor compounds [9, 44]. These may include carpets, upholstered furniture, or textiles.

How are we exposed to perfluorinated compounds?

More research is needed to fully understand all sources of human exposure, but people are most likely exposed to these compounds by consuming PFC-contaminated water or food, or by using products that contain PFCs. Unlike many other persistent chemicals, PFCs are not stored in body fat.

How can perfluorinated chemicals be prevented?

How can I reduce my exposure?

1. Avoid purchasing or, at a minimum, limit use of products containing PFCs.
2. Watch for packaged foods.
3. Avoid stain-resistance treatments.
4. Check your personal-care products.
5. Avoid Teflon™ or non-stick cookware.

What is perfluoropolyether (PFPE)?

Perfluoropolyether (PFPE) is a kind of special perfluorinated polymer, the average molecular weight is between 500～16000, and it is only composed of carbon (C), fluorine (F), and oxygen (O) atoms. There are PFPE Oils with D-type, K-type, Y-type and Z-type structures.

What is perfluorinated polyether oil?

The invention relates to the use of perfluorinated polyether oils for protecting electrical contacts from being covered by silicon-containing compounds. The invention relates to the use of perfluorinated polyether oils for protecting electrical contacts from being covered by silicon-containing compounds.

What is PFPE oil made of?

PFPE Oils. Perfluoropolyether (PFPE) is a kind of special perfluorinated polymer, the average molecular weight is between 500～16000, and it is only composed of carbon (C), fluorine (F), and oxygen (O) atoms. CAS No: 69991-67-9. It has the following features:

Is PFPE a suitable material for vapor phase soldering?

The thermal and chemical stability of PFPE along with a vapor–liquid equilibrium of 230°C when mixed with the right composites make it a suitable candidate for vapor phase soldering technologies. ^ Bradley Shogrin (August 1995). “Spontaneous Dewetting of a Perfluoropolyether” (PDF).