Tuning Rheological Property of Polyacrylonitrile Solution: Viscosity, Viscoelasticity, and Nonlinearity DOI Open Access
Songsong Li, Wei Guo,

Yuliang Liu

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

ABSTRACT In the production process of carbon fibers (CF), quality PAN spinning solution (PANss) is one critical factors influencing performance CF. this study, PANss with different mixed solvents were prepared, and its viscosity, linear nonlinear rheological behavior characterized by measurement. The results demonstrated manuscript belong to non‐Newtonian fluids. zero‐shear viscosity(η 0 ) decreased increase in lower‐viscosity solvent, while index flow (n) increased addition variation η n as a function solvent content could be fitted using equation . Furthermore, slope log G″ versus G′ dimethylformamide (DMF) both PAN/dimethyl sulfoxide (DMSO): DMF PAN/dimethylacetamide (DMAC): solution. Conversely, raised DMAC PAN/DMSO: Additionally, degree nonlinearity three types gradually or increased.

Language: Английский

Functionalization of chitosan and its application in flame retardants: A review DOI

Yudong Hu,

Yuhang Ye, Jiangbo Wang

et al.

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 295, P. 139615 - 139615

Published: Jan. 7, 2025

Language: Английский

Citations

3
Hierarchical Nanospheres toward Flame-Retardant, Mechanically Strong, and Low-Toxicity Epoxy Resins DOI
Wenhui Rao, Changjiang Liu,

Yun Zhao

et al.

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: 6(15), P. 9238 - 9248

Published: July 29, 2024

To endow epoxy resins (EPs) with outstanding flame-retardant and smoke-inhibiting effects, a multifunctional nanoparticle (SCP) has been designed prepared via simple approach, wherein Cu2O, melamine, phosphorus-containing flame retardants were successively deposited onto the surface of silica nanospheres. The incorporation low addition amount 2 wt % SCP within EP demonstrates significant improvement in retardancy. This enhancement is evidenced by notable increase limiting oxygen index to 29.2% attainment V-1 rating vertical burning test, contrast respective values 23.8% no for unmodified EP, respectively. Moreover, total smoke production, peak heat release rate, production rate CO EP/SCP-2 during cone calorimeter test decreased 10.2%, 26.1%, 37.0%, Besides, also endows composites commendable mechanical properties glass transition temperature (Tg), as 22.5% impact strength, an 8.1% rise tensile 9.5% Tg, comparing EP. mechanism analysis revealed that functions resin through both gas-phase condensed-phase mechanisms. Overall, proposed strategy presents promising approaches simultaneously enhancing fire safety performance polymer materials.

Language: Английский

Citations

8
Synthesis of a novel biomass-based flame retardant featuring vinyl-terminated chemical cross-linking and application in flame retardancy, smoke suppression, toxicity reduction and mechanical enhancement of PAN composite fibers DOI
Chunlong Zuo, Wei Tan,

Jieyun Zhao

et al.

Composites Part B Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 111846 - 111846

Published: Sept. 1, 2024

Language: Английский

Citations

4
Preparation of novel flame retardant, smoke suppression and toxicity reduced PAN composite fiber based on biomass phosphononitrile derivative with Cu2+ DOI
Chunlong Zuo,

Lixiao Gao,

Wei Tan

et al.

Polymer Degradation and Stability, Journal Year: 2025, Volume and Issue: 233, P. 111183 - 111183

Published: Jan. 8, 2025

Language: Английский

Citations

0
Tuning Rheological Property of Polyacrylonitrile Solution: Viscosity, Viscoelasticity, and Nonlinearity DOI Open Access
Songsong Li, Wei Guo,

Yuliang Liu

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

ABSTRACT In the production process of carbon fibers (CF), quality PAN spinning solution (PANss) is one critical factors influencing performance CF. this study, PANss with different mixed solvents were prepared, and its viscosity, linear nonlinear rheological behavior characterized by measurement. The results demonstrated manuscript belong to non‐Newtonian fluids. zero‐shear viscosity(η 0 ) decreased increase in lower‐viscosity solvent, while index flow (n) increased addition variation η n as a function solvent content could be fitted using equation . Furthermore, slope log G″ versus G′ dimethylformamide (DMF) both PAN/dimethyl sulfoxide (DMSO): DMF PAN/dimethylacetamide (DMAC): solution. Conversely, raised DMAC PAN/DMSO: Additionally, degree nonlinearity three types gradually or increased.

Language: Английский

Citations

0