Article
Materials Science, Characterization & Testing
N. Lorenz, M. Mueller-Pabel, J. Gerritzen, J. Muller, B. Groeger, D. Schneider, K. Fischer, M. Gude, Ch Hopmann
Summary: A fast crosslinking reaction is crucial for the economical production of automotive components in liquid composite molding processes. This study provides comprehensive results on the characterization of thermo-mechanical properties, pressure dependent reaction kinetics and shrinkage of fast curing epoxy resins, which give important advice for improved process modeling and facilitate prioritisation for future characterization of such resins.
Article
Thermodynamics
Leena Karthikeyan, Drisya Desakumaran, Panthaplackal Bhaskaran Soumya Mol, Dona Mathew
Summary: This study investigated the curing behavior and decomposition kinetics of epoxy resins blended with PEEKTOH and PEEKPR modifiers. The modified epoxies showed lower cure initiation temperature and activation energy compared to unmodified epoxy systems. In terms of thermal decomposition, the PEEKPR blended epoxy exhibited the highest activation energy values while the PEEKTOH system exhibited the lowest values.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Composites
Alexander Vedernikov, Yaroslav Nasonov, Roman Korotkov, Sergey Gusev, Iskander Akhatov, Alexander Safonov
Summary: This study focuses on investigating the cure kinetics modeling of a vinyl ester pultrusion resin. By comparing 16 kinetic models, a model based on the n th-order autocatalytic reaction was found to have the best performance, with a proposed method to reduce errors resulting from simultaneous melting of additives. The research also demonstrates the significant influence of resin composition on the manufacturing process of composite materials.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Thermodynamics
Jinsil Cheon, Donghwan Cho
Summary: This study investigated the effects of two peroxide-based initiators and multi-walled carbon nanotubes on the cure behavior and kinetics of vinyl ester resin. The results showed that the molecular size of the initiators and the concentration of MWCNT significantly influenced the curing behavior of the resin, and MWCNT simplified the cure mechanism and reduced the activation energy.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Debdatta Ratna, S. B. Jagtap, R. Nimje, B. C. Chakraborty
Summary: This paper presents a detailed study on the cure kinetics of epoxy and polyetheramine systems. The effect of epoxy to polyetheramine ratios and molecular masses on the curing behavior, mechanical properties, and thermal behavior of the cured networks were investigated. The results were analyzed using Fourier transform infrared spectroscopy, temperature-modulated differential scanning colorimetry, and thermogravimetric analysis. The study found that the optimized epoxy/amine ratio resulted in improved cure behavior and thermal stability of the epoxy networks.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Polymer Science
Ali Akbar Keivanloo Shahrestanaki, Mohammad Mehrshad, Seyed Hashem Akhlaghi
Summary: The study investigated the dispersion and curing kinetics of amine-functionalized and epoxy-functionalized magnetic nanoparticles in epoxy resin, with well-matched curing values obtained using different kinetic methods.
HIGH PERFORMANCE POLYMERS
(2021)
Article
Polymer Science
Gabriele Voto, Leela Sequeira, Alexandros A. Skordos
Summary: This study introduces a cure kinetics methodology for tailoring initial matrix formulations focusing on matrix constituents reactivity. The method has been validated on a wide range of epoxy/amine formulations, allowing the design of customized matrix systems with specific reactivity and cure time.
Article
Chemistry, Multidisciplinary
Yu-xuan Xu, Xing-guo Zhao, Xiang Dong, Guang-long Dai
Summary: Silane agents were used to synthesize organic-modified nickel phyllosilicates (NiPS), which were then introduced into epoxy resin (EP) to form composites. The effects of these organic-modified NiPS on the curing behavior and flammability of epoxy composites were carefully investigated. The addition of NiPS resulted in a narrower curing temperature range and decreased activation energy, indicating a lowered energetic barrier. The presence of these organic-modified NiPS also enhanced the self-extinguishing ability and limited oxygen index of the composites, and a solid phase flame retardant mechanism was proposed.
Article
Biochemistry & Molecular Biology
Mohammad Hossein Karami, Mohammad Reza Kalaee, Saeideh Mazinani, Mohamadreza Shakiba, Saied Shafiei Navid, Majid Abdouss, Alireza Beig Mohammadi, Weisong Zhao, Mojtaba Koosha, Ziyue Song, Tianduo Li
Summary: This study investigated the curing kinetics of epoxy nanocomposites containing ultra-fine full-vulcanized acrylonitrile butadiene rubber nanoparticles (UFNBRP) at different concentrations. The effect of curing temperatures was studied using rheological analysis. Characterization of the nanocomposites was done using Fourier transform infrared spectroscopy (FTIR) and morphological studies were conducted using field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The results showed that the incorporation of UFNBRP reduced the curing rate at the gel point and that the nanocomposites had a homogeneous dispersion of UFNBRP in epoxy resin. Furthermore, the activation energy was reduced when 0.5% UFNBRP was added to the epoxy resin matrix. The curing kinetics of the nanocomposites followed the Sestak-Berggren autocatalytic model.
Article
Chemistry, Multidisciplinary
Anu Surendran, Juergen Pionteck, Mikhail Malanin, Roland Vogel, Nandakumar Kalarikkal, Sabu Thomas
Summary: Reaction induced phase separation is a characteristic of thermoset/thermoplastic blend systems. The study focused on the effect of organically modified cloisite 20A nanoclay on the miscibility and curing parameters of an epoxy blend system. The nanoclay enhanced viscoelastic effects, decreased the rate of epoxide conversion, and contributed to the increase in complex viscosity during curing.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Polymer Science
Tianwen Dai, Shuaiwei Yuan, Huawei Zou, Pengbo Liu
Summary: The FETE is a novel epoxy resin with high thermal degradation performance. By copolymerizing with TDE-85, the Tg of the copolymer can be adjusted and the compatibility can be improved, showing potential applications in reworkable electronic packaging, recycling or degradable epoxy resin area.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2021)
Article
Biochemistry & Molecular Biology
Zihui Xu, Jing Zhan, Zhirong Xu, Liangchen Mao, Xiaowei Mu, Ran Tao
Summary: A new phosphorus-based flame retardant PBDOO was synthesized and incorporated with VE to improve its flame retardancy and thermal stability. The VE/PBDOO composites showed UL-94 V-0 rating and reduced peak heat release rate and total heat release. The flame retardant mechanism of PBDOO was proposed based on pyrolysis behavior and residual carbon analysis of the composites.
Article
Thermodynamics
Petru Budrugeac, Andrei Cucos, Radu Dascalu, Carmen Paraschiv, Sorina Mitrea, Beatrice-Gabriela Sbarcea
Summary: Various analyses were conducted to characterize an epoxy resin composite material, resulting in determination of activation energy and kinetic parameters. Experimental and calculated results showed good agreement, indicating potential for predicting thermal lifetime of the material.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Polymer Science
Han Li, Nasidan Wang, Xuefei Han, Haoran Yuan, Jiang Xie
Summary: The study investigates the thermal degradation mechanism and kinetics of carbon fiber epoxy resin used in aerostructures, analyzing the process under different environments and establishing a kinetic model. Results show differences in thermal degradation steps under inert atmosphere and air atmosphere, providing fundamental support for the application of carbon fiber epoxy resin in the aircraft industry.
Article
Polymer Science
Jiachen Wang, Wei Liu, Huan Liu, Xiaodong Wang, Dezhen Wu, Shuangkun Zhang, Shaowei Shi, Weiwei Liu, Zhanpeng Wu
Summary: A novel epoxy monomer, CP-EP, composed of nontoxic eugenol and nonflammable cyclotriphosphazene, was successfully synthesized in this work. The resulting cyclotriphosphazene-based thermosets (CPTs) exhibited improved properties compared to bisphenol-A epoxy resin, including higher glass transition temperature, enhanced mechanical strengths, and enhanced nonflammability. The use of this environmentally friendly and fire-safe epoxy thermosetting system has the potential to benefit both the environment and human health.
Article
Polymer Science
A. Mansourizadeh, M. H. Jazebizadeh, M. R. Vaseghi, A. Aghili
JOURNAL OF POLYMER RESEARCH
(2015)
Article
Chemistry, Applied
Mehdi Sahami, Mohammadreza Kalaee, Alireza Aghili, Saeedeh Mazinani, Jafar Khademzadeh Yeganeh
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2017)
Article
Chemistry, Multidisciplinary
Vahid Arabli, Alireza Aghili
Article
Polymer Science
Mohammad Ali Semsarzadeh, Alireza Aghili
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
(2008)
Article
Chemistry, Multidisciplinary
M. Sheydaei, M. R. Kalaee, A. Allahbakhsh, M. Samar, A. Aghili, M. Dadgar, G. S. Moosavi
JOURNAL OF SULFUR CHEMISTRY
(2012)
Article
Polymer Science
Bahareh Kamyab Moghadas, Amin Akbarzadeh, Mohammad Azadi, Alireza Aghili, Ali Shokuhi Rad, Sara Hallajian
JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
(2020)
Article
Engineering, Electrical & Electronic
Abbas Kalate Seyfari, Mahdi Bahadoran, Alireza Aghili
OPTICAL AND QUANTUM ELECTRONICS
(2020)
Article
Chemistry, Applied
Shima Khademi, Saeed Zahmatkesh, Alireza Aghili, Rashid Badri
Summary: A new magnetic nanocatalyst based on tungstic acid immobilization onto zirconium-L-aspartate amino acid MOF-grafted L-(+)-tartaric acid stabilized magnetite nanoparticles has been synthesized using two solvo-thermal methods. The catalyst shows high proton conductivity and Bronsted acid properties, and is capable of easy extraction post-reaction without deactivation or selectivity loss. The products were characterized by spectroscopic analysis and the reaction conditions and mechanism were optimized.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Alireza Aghili, Nadezda Sukhorukova, Julien Ugon
Summary: The article discusses the non-isothermal analysis of materials using the Arrhenius equation and temperature integration. It introduces the general temperature integral, estimated through approximation functions, and presents more accurate approximations obtained through quasiconvex optimization and the bisection method.
JOURNAL OF MATHEMATICAL CHEMISTRY
(2021)
Article
Polymer Science
Malihe Talebzadeh, M. Sadegh Tavallali, Alireza Aghili, Afshin Heidari
Summary: Experimental results showed that the proper melt-mixing of 1% nanoparticles into the polymer matrix significantly enhanced the mechanical properties of POM-Cloisite 20A nanocomposites, while reducing the degradation temperature. Although it did not have a significant impact on the melting temperature, these findings suggest that nano-based POM gears can exhibit improved mechanical properties.
JOURNAL OF POLYMER ENGINEERING
(2022)
Article
Thermodynamics
Alireza Aghili
Summary: The non-isothermal analysis of reactions with constant heating rate involves temperature integral, which can be expressed and evaluated using special functions and software when assuming constant activation energy and power-law exponent. Special functions include exponential integral function, incomplete gamma function, etc. MATLAB and GNU Octave were used for computing special function models with high accuracy.
THERMOCHIMICA ACTA
(2021)
Article
Physics, Multidisciplinary
Mahdi Bahadoran, Alireza Aghili, Ahmad Fakhrurrazi Ahmad Noorden
Summary: In this study, a microscale opto-mechanical pressure sensor was successfully investigated using a combination design of silicon microring resonator and Mach-Zehnder interferometer. The sensor exhibited microscale size, high precision, and high sensitivity, and demonstrated promising performance in pressure sensing applications.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Proceedings Paper
Nanoscience & Nanotechnology
Alireza Aghili, Mohammad Reza Kamrani
PROCEEDINGS OF THE 2017 IEEE 7TH INTERNATIONAL CONFERENCE NANOMATERIALS: APPLICATION & PROPERTIES (NAP)
(2017)
Article
Chemistry, Multidisciplinary
Mohammad Ali Semsarzadeh, Alireza Aghili
CHEMISTRY & CHEMICAL TECHNOLOGY
(2009)