ATR-FTIR Analysis of Melamine Resin, Phenol-Formaldehyde Resin and Acrylonitrile-Butadiene Rubber Blend Modified by High-Energy Electron Beam Radiation

Kopal, Ivan; Vršková, Juliána; Harničárová, Marta; Valíček, Ján; Ondrušová, Darina; Krmela, Ján; Hybler, Peter

doi:10.1007/978-3-030-39062-4_24

Cited by 1 publication

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The relaxation peaks on all DMA curves in the glassy state at temperatures roughly between 176-253 K can be associated with the secondary γ-transition at temperature T γ , where localised bond movements (bending and stretching) and side-chain movements occur, and with the β-transition at temperature T β due to vibrational and rotational motion of water as well as water-polymer blend complex molecules [30], samples of which were not dried before the curing process. The α-transition peaks on E"(T,d), as well as tanδ(T,d) curves in the leathery state of the blend at temperatures approximately from 266 K to 275 K and from 278 K to 288 K, respectively, correspond to the glass transition of nitrile rubber at temperature T g(NBR) [31].…”

Section: Dynamic Mechanical Analysismentioning

confidence: 99%

Modelling the Stiffness-Temperature Dependence of Resin-Rubber Blends Cured by High-Energy Electron Beam Radiation Using Global Search Genetic Algorithm

Kopal¹,

Vršková

Bakošová³

et al. 2020

Polymers

Self Cite

View full text Add to dashboard Cite

Modelling the influence of high-energy ionising radiation on the properties of materials with polymeric matrix using advanced artificial intelligence tools plays an important role in the research and development of new materials for various industrial applications. It also applies to effective modification of existing materials based on polymer matrices to achieve the desired properties. In the presented work, the effects of high-energy electron beam radiation with various doses on the dynamic mechanical properties of melamine resin, phenol-formaldehyde resin, and nitrile rubber blend have been studied over a wide temperature range. A new stiffness-temperature model based on Weibull statistics of the secondary bonds breaking during the relaxation transitions has been developed to quantitatively describe changes in the storage modulus with temperature and applied radiation dose until the onset of the temperature of the additional, thermally-induced polymerisation reactions. A global search real-coded genetic algorithm has been successfully applied to optimise the parameters of the developed model by minimising the sum-squared error. An excellent agreement between the modelled and experimental data has been found.

show abstract

Section: Dynamic Mechanical Analysismentioning

confidence: 99%