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The Influence of the Processing Conditions on Changes in Physical and Structural Properties of Injection Moulded Parts Made of Polypropylene [PDF]

open access: yesArchives of Metallurgy and Materials, 2023
The injection moulding conditions may change the degree of crystallinity of the plastic to some extent, which affects the mechanical properties such as tensile strength and hardness. Moreover, the cooling conditions of the moulded parts may contribute to
P. Palutkiewicz, A. Kalwik, T. Jaruga
doaj   +1 more source

Application of Solution Calorimetry to Determining the Fusion Enthalpy of an Arylaliphatic Compound at 298.15 K: n-Octadecanophenone

open access: yesLiquids, 2022
Evaluating the temperature dependence of the fusion enthalpy is no trivial task, as any compound melts at a unique temperature. At the same time, knowledge of the fusion enthalpies under some common conditions, particularly at the reference temperature ...
Mikhail I. Yagofarov   +3 more
doaj   +1 more source

Thermochemical Study of 1-Methylhydantoin

open access: yesMolecules, 2022
Using static bomb combustion calorimetry, the combustion energy of 1-methylhydantoin was obtained, from which the standard molar enthalpy of formation of the crystalline phase at T = 298.15 K of the compound studied was calculated.
Juan M. Ledo   +3 more
doaj   +1 more source

Impact of Ni on the thermophysical and thermodynamic properties of Fe–C–Ni based alloys

open access: yesJournal of Materials Research and Technology, 2022
Three model alloys based on Fe-C-Ni were studied containing carbon between 0.338 and 0.382 wt. % and nickel between 1.084 and 4.478 wt. %. Phase transition temperatures, heat capacity, enthalpy change, heat of fusion, coefficient of thermal expansion ...
Ľubomíra Drozdová   +8 more
doaj   +1 more source

Synthesis of Lauric-Myristic Acid/Activated Carbon Composite as a New Shape-Stabilized Energy Storage Material

open access: yesMedžiagotyra, 2022
In this work, a new composite phase change material (CPCM) with lauric-myristic acid (LA-MA) eutectic as PCM and activated carbon (AC) was used as supporting material with four different mass ratios of 5.0:5.0, 5.5:4.5, 6.0:4.0, and 6.5:3.5, respectively.
Yanghua Chen   +3 more
doaj   +1 more source

Advancements in Phase Change Materials in Asphalt Pavements for Mitigation of Urban Heat Island Effect: Bibliometric Analysis and Systematic Review

open access: yesSensors, 2023
This research presents a dual-pronged bibliometric and systematic review of the integration of phase change materials (PCM) in asphalt pavements to counteract the urban heat island (UHI) effect.
Claver Pinheiro   +10 more
doaj   +1 more source

Thermal Study of Two Benzotriazole Derivatives

open access: yesU.Porto Journal of Engineering, 2022
An experimental study based on the thermal analysis of 5-methyl-1H-benzotriazole and 5,6-dimethyl-1H-benzotriazole was developed, by using differential scanning calorimetry.
Ana Lima   +2 more
doaj   +1 more source

Energetic and Structural Studies of Two Biomass-Derived Compounds: 6- and 7-hydroxy-1-indanones

open access: yesApplied Sciences, 2020
The energetic study of 6-hydroxy-1-indanone and 7-hydroxy-1-indanone was performed using experimental techniques and computational calculations. The enthalpies of combustion and sublimation of the two compounds were determined and allowed to derive the ...
Ana Luisa Ribeiro da Silva   +1 more
doaj   +1 more source

Phase transitions properties of N,N-dimethyl-4-nitroaniline

open access: yesU.Porto Journal of Engineering, 2023
The present work reports an experimental study aiming to determine several thermodynamic properties of fusion and sublimation of the chromophore N,N-dimethyl-4-nitroaniline.
Bruno D. A. Pinheiro   +2 more
doaj   +1 more source

Thermal Characterization of Binary Calcium-Lithium Chloride Salts for Thermal Energy Storage at High Temperature

open access: yesEnergies, 2023
Due to their excellent thermophysical properties and high stability, inorganic salts and Forsalt mixtures are considered promising thermal energy storage materials for applications operating at high temperatures. A mixture of binary salts, such as CaCl2 (
Naveed Hassan   +4 more
doaj   +1 more source

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