Rheological characterization on thermal degradation of ethylene-tetrafluoroethylene copolymer

Kotera, Seigo; Yamaguchi, Masayuki

doi:10.1016/j.jfluchem.2014.07.020

Cited by 15 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ethylene-tetrafluoroethylene copolymer (ETFE), which occupies a special status among fluoropolymers, is a semi-crystalline polymer and is essentially a 1:1 alternating copolymer of ethylene and tetrafluoroethylene. ETFE has a higher radiation stability and exhibits superior mechanical properties, flexural modulus and creep resistance than its perfluorinated counterparts, i.e., poly (tetrafluoroethylene) (PTFE), poly (tetra fluoroethylene-co-hexafluoropropylene) (FEP), and poly (tetrafluoroethylene-co-pefluorovinylether) (PFA) [ 3 , 14 , 15 , 16 , 17 ] Oshima et al [ 18 ] reported that polytetrafluoroethylene (PTFE) is extremely sensitive to radiation and undergoes a chain scission even at a very small radiation dose. Galante et al [ 19 ] investigated the radiation tolerance of perfluoroalkoxy (PFA) under vacuum and in oxygen and found it to be higher than that of PTFE (the ratio being 10:1).…”

Section: Introductionmentioning

confidence: 99%

Effect of Radiation-Induced Cross-Linking on Thermal Aging Properties of Ethylene-Tetrafluoroethylene for Aircraft Cable Materials

Zhang

Chen

et al. 2021

Materials

View full text Add to dashboard Cite

The effects of electron beam irradiation on ethylene-tetrafluoroethylene copolymer (ETFE) were studied. Samples were irradiated in air at room temperature by a universal electron beam accelerator for various doses. The effect of irradiation on samples and the cross-linked ETFE after aging were investigated with respect to thermal characteristics, crystallinity, mechanical properties, and volume resistivity using thermo-gravimetric analysis (TGA), differential scanning calorimeter (DSC), universal mechanical tester, and high resistance meter. TGA showed that thermal stability of irradiated ETFE is considerably lower than that of unirradiated ETFE. DSC indicates that crystallinity is altered greatly by cross-link. The analysis of mechanical properties, fracture surface morphology, visco-elastic properties and volume resistivity certify radiation-induced cross-linking is vital to aging properties.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Radiation-Induced Cross-Linking on Thermal Aging Properties of Ethylene-Tetrafluoroethylene for Aircraft Cable Materials

Zhang

Chen

et al. 2021

Materials

View full text Add to dashboard Cite

show abstract

“…Since M w /M n of the present sample was found to be 2.0 [14], G N 0 is calculated to be 1. Furthermore, the figure provides the rheological terminal parameters such as zero-shear viscosity  0 and steady-state shear compliance J e 0 as follows;…”

Section: Resultsmentioning

confidence: 60%

“…Figure 1 shows the master curves of angular frequency dependence of oscillatory shear modulus at 300 °C. The time-temperature superposition principle seems to be applicable in this temperature range, although thermal degradation occurs slightly at 300 °C [14]. The storage modulus G' and loss modulus G" are proportional to ω 2 and ω, respectively, in the low frequency region; i.e., the rheological terminal zone is observed.…”

Section: -2 Measurementsmentioning

confidence: 97%

Flow property at capillary extrusion for ethylene–tetrafluoroethylene copolymer

Kotera

Yamaguchi

2015

Journal of Fluorine Chemistry

Self Cite

View full text Add to dashboard Cite

“…Kotera and Yamaguchi demonstrate that the network structure appears in the sample during the processing, suggesting that the reaction with oxygen gas provides the branching points. [ 43 ]…”

Section: Resultsmentioning

confidence: 99%

Recycling Tetrafluoroethylene–Perfluoroalkyl Vinylether Copolymer (PFA) Using Extrusion Process

Romoaldo

Francisquetti

Simon

et al. 2022

Macro Materials & Eng

View full text Add to dashboard Cite

Tetrafluoroethylene–perfluoroalkyl vinylether copolymer (PFA) has a broad application ranging from biomedical and aerospace to corroding environments in the chemical industry. Despite a low share in end‐of‐life products, PFA processing can produce up to 30% of waste. Thus, understanding how recycled fluorinated polymers affect product performance is crucial to ensure primary recycling, besides economic and environmental reasons. In this paper, the utilization feasibility of PFA waste materials is investigated, i.e., recycled PFA (PFAr) in closed‐loop recycling. The effect of PFAr loading (5–100 wt.%) on the thermal, mechanical, rheological, and color properties and chemical resistance are studied. Thermal properties and chemical resistance showed no significant changes in all ranges of PFAr content tested. The addition of higher loads of PFAr (≥50 wt.%) leads to a reduction in mechanical properties, particularly stress‐strength analysis and elongation at break. However, elastic modulus and hardness have improved concurrently with an increase in the degree of crystallinity. The decrease in complex viscosity and yellowing of the samples occurred probably induced by a polymer chain degradation. Despite that, the addition of up to 10 wt.% of PFAr proved to be an effective alternative to reusing PFA residues based on mechanical recycling.

show abstract

Rheological characterization on thermal degradation of ethylene-tetrafluoroethylene copolymer

Cited by 15 publications

References 25 publications

Effect of Radiation-Induced Cross-Linking on Thermal Aging Properties of Ethylene-Tetrafluoroethylene for Aircraft Cable Materials

Effect of Radiation-Induced Cross-Linking on Thermal Aging Properties of Ethylene-Tetrafluoroethylene for Aircraft Cable Materials

Flow property at capillary extrusion for ethylene–tetrafluoroethylene copolymer

Recycling Tetrafluoroethylene–Perfluoroalkyl Vinylether Copolymer (PFA) Using Extrusion Process

Contact Info

Product

Resources

About