Views: 0     Author: Site Editor     Publish Time: 2023-06-26      Origin: Site

A couple of the common wire insulations on the market are based on the PTFE and ETFE polymers. PTFE (DuPont trade name Teflon®) is a fluorocarbon and is constructed with carbon and fluorine atoms, whereas ETFE is a carbon, fluorine, and hydrogen based material. The following discusses the advantages and disadvantages of each.

Considering the physical properties of both of the polymers, there are some differences between the two. The tensile strength of ETFE can be as much as 34% greater than PTFE. PTFE is more flexible and has a much higher (66%) elongation to break. Additionally, PTFE does have a significant advantage is the coefficient of friction. PTFE has a coefficient of friction one-third of ETFE making it a more ideal wire insulator for areas where wire bundles may chafe against one another.

There are also notable differences in the thermal properties of each material. The melting temperature of PTFE is 327oC and ETFE 267oC, but both of these materials begin to soften below at lower temperatures. As such, the operating temperature of the materials is lower. Further, PTFE has a Limiting Oxygen Index (the minimum percentage concentration of oxygen at which the polymer will burn) greater than 95% whereas ETFE is somewhere between 30-36%, meaning that PTFE should be considered in higher oxygen environments.

If you are looking for a material with high mechanical toughness and low friction properties, a PTFE wire should be considered over an ETFE wire. ETFE should be considered in high-energy radiation environments.

Fongming Cable can help you find the correct cable. We are a factory with various international certifications. If you have other questions, please contact us or ask for quotation online.