Preparation and Application of a Novel Liquid Oxygen-Compatible Epoxy Resin of Fluorinated Glycidyl Amine with Low Viscosity DOI Open Access
J. Wei, Jia Yan, Decheng Li

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(19), P. 2759 - 2759

Published: Sept. 29, 2024

A liquid oxygen-compatible epoxy resin of fluorinated glycidyl amine (TFEPA) with a low viscosity 260 mPa·s in wide range temperatures, from room temperature to 150 °C, was synthesized and used decrease the phosphorus-containing bisphenol F resins. And forming process application performances this system its composite were investigated. The decreased 4925 749 at 45 °C by mixing 10 wt.% TFEPA, which enough for filament winding process. Moreover, processing time windows increased 73% 186%, respectively. After crosslinking, oxygen compatibility preserved, tensile strength, elastic modulus, breaking elongation −196 133.31 MPa, 6.59 GPa, 2.36%, respectively, similar those without TFEPA. flexural strength modulus 276.14 MPa 7.29 increasing 21.73% strain energy breaking, indicating an enhanced toughness derived Based on system, 862.73 6.88 MJ/m3, 4.46% 10.79%,

Language: Английский

Preparation of an environmentally friendly water-soluble sizing agent and its application in CF/PPESK composites DOI

Jingyao Feng,

Danhui Wang, Nan Li

et al.

Polymer, Journal Year: 2024, Volume and Issue: unknown, P. 127666 - 127666

Published: Sept. 1, 2024

Language: Английский

Citations

6
Poly(aryl ether ketone) (PAEK) with Both High Gel Content and High Crystallinity for High-Temperature Applications DOI
Jinxuan Han, Cong Ma, Chang Yeon Yu

et al.

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 26, 2024

Poly(ether ether ketone) (PEEK) is a semicrystalline engineering plastic with excellent characteristics. However, its modulus and dimensional stability decrease significantly above the glass transition temperature (Tg). In this paper, cross-linkable PAEK (DBPEEKs) carbon–carbon double bonds was synthesized, majority of synthesis methods were determined by using curing kinetics. By introduction biphenyl bisphenol (BP) as rigid monomer unit, series crystalline (DPEDEKs) strong cross-linking crystallinity after generated. DPEDEK-25% process (DPEDEK-25%-gradient curing) still maintained 24% (Xc) at gel content (f) 96%. This coexistence crystallization broadens application range PEEK high temperatures. At 250 °C, DPEDEK-25%-gradient had tensile strength 42 MPa, which higher than that composite material 450GL30 275 °C similar to 450CA30 (VICTREX official website). remained applicable 300 wear rate 7.69 × 10–7 mm3 N–1 m–1 an average friction coefficient (COF) 0.41. Whether ambient or elevated temperatures, same solvent resistance PEEK. work provides important guidance for expanding scope

Language: Английский

Citations

0
Preparation and Application of a Novel Liquid Oxygen-Compatible Epoxy Resin of Fluorinated Glycidyl Amine with Low Viscosity DOI Open Access
J. Wei, Jia Yan, Decheng Li

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(19), P. 2759 - 2759

Published: Sept. 29, 2024

A liquid oxygen-compatible epoxy resin of fluorinated glycidyl amine (TFEPA) with a low viscosity 260 mPa·s in wide range temperatures, from room temperature to 150 °C, was synthesized and used decrease the phosphorus-containing bisphenol F resins. And forming process application performances this system its composite were investigated. The decreased 4925 749 at 45 °C by mixing 10 wt.% TFEPA, which enough for filament winding process. Moreover, processing time windows increased 73% 186%, respectively. After crosslinking, oxygen compatibility preserved, tensile strength, elastic modulus, breaking elongation −196 133.31 MPa, 6.59 GPa, 2.36%, respectively, similar those without TFEPA. flexural strength modulus 276.14 MPa 7.29 increasing 21.73% strain energy breaking, indicating an enhanced toughness derived Based on system, 862.73 6.88 MJ/m3, 4.46% 10.79%,

Language: Английский

Citations

0