Structure, Properties, and Modification of Polytrifluorochloroethylene: A Review

Abstract

Polytrifluorochloroethylene (PCTFE) is one of the earliest synthesized and commercialized fluoroplastics. It shows ultralow dielectric constant and loss coupled with other excellent properties such as good water vapor permeation resistance, anti-corrosion, light transparency, creep resistance, and so forth, exhibiting great potential to break the bottleneck of the development of high-frequency communication field. Besides, PCTFE-based materials have already played an essential role in some high-tech fields, including chemical, medical, aerospace, and electrical industries. However, in terms of fundamental research, most of the reports concerning the chemical and physical structure of PCTFE came from the last century, but very few in recent years. Herein, the history of the development and the research progress of the structure, properties, and modification of PCTFE was introduced respectively and finally the perspective was proposed, aiming to provide guidance for the future research and application of PCTFE-based materials.

Development and Recent Progress of Hoses for Cryogenic Liquid Transportation

“…At present, among thermoplastic polymer materials, only some types of fluoropolymers are LOX compatible [48]. Research shows that some fluoropolymers, such as polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene (PCTFE), and ethylene tetrafluoroethylene copolymer (ETFE), are commonly used as sealing materials for liquid oxygen pipe fittings [49][50][51][52], which indicated that these fluoropolymers are compatible with LOX. In this section, we investigated the mechanical properties of several fluoroplastic films available on the market, including perfluoroalkoxy polymers (PFA), PTFE, PCTFE, and ETFE.…”

Cryogenic Mechanical Properties and Stability of Polymer Films for Liquid Oxygen Hoses

“…DeLong et al [ 15 ] showed that perfluoroalkoxy polymers (PFA) passed the 98 J LOC test, and they completed the manufacture and evaluation test for a fluoropolymer skin tank cylinder. Furthermore, some fluoropolymers, such as polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene (PCTFE) and ethylene tetrafluoroethylene copolymer (ETFE), are commonly used as sealing materials for liquid oxygen pipe fittings [ 16 , 17 , 18 ], which means that these fluoropolymers passed the LOC test and are compatible with LOX. In addition to LOC, understanding the cryogenic mechanical behavior of a specialized set of polymer films is also important for their application under extremely low-temperature conditions [ 19 ].…”