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Effect of Accelerators on the Curing of Unsaturated Polyester Resins: Kinetic Model for Room Temperature Curing
Year: 2021
Type of publication: článek v odborném periodiku
Name of source: Industrial & Engineering Chemistry Reseach
Publisher name: American Chemical Society
Place: Washington
Page from-to: 14143-14153
Titles:
Language Name Abstract Keywords
cze Vliv urychlovačů na vytvrzování nenasycených polyesterových pryskyřic: kinetický model pro vytvrzování za laboratorní teploty V rámci této studie bylo studováno několik sloučenin železa a vanadu, které mohou sloužit jako urychlovače pro vytvrzování nenasycených polyesterových pryskyřic. Mohou být tedy použity jako ekologická náhrada karboxylátů kobaltnatých, které jsou v současnosti široce rozšířené v oblasti kompozitů. vytvrzovací aktivita; oxovanadičité komplexy; primární sikativy; polymerace
eng Effect of Accelerators on the Curing of Unsaturated Polyester Resins: Kinetic Model for Room Temperature Curing Several iron and vanadium compounds were evaluated as accelerators for curing of unsaturated polyester resins, serving as alternatives to toxic cobalt(II) carboxylates currently in widespread use in the composite industry. The catalytic power of the given metal-based compounds has been verified by gelation time measurements on a multipurpose unsaturated polyester/ styrene/methyl ethyl ketone peroxide system. Due to different demands of the application sphere, our detailed investigation of the curing process has covered two extreme situations: the behaviors of the accelerators under adiabatic and isothermal conditions. Exothermic behavior in the thermally isolated system, followed by a K-type thermocouple, enabled recognition of the inhibition of the curing process at high concentration of the accelerator and verification of its thermal stability. At isothermal conditions, a radical copolymerization process has been followed by real-time near-infrared spectroscopy, which enabled the establishment of a kinetic model for precise quantification of the catalytic effect for given accelerators. drying activity; oxovanadium(iv) complexes; primary driers; cure; polymerization

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