Isoconversional method to explore the cure reaction mechanisms and curing kinetics of DGEBA/EMI-2,4/nano-SiC system

2005 ◽  
Vol 44 (1) ◽  
pp. 371-379 ◽  
Author(s):  
Tianle Zhou ◽  
Mingyuan Gu ◽  
Yanping Jin ◽  
Junxiang Wang
Keyword(s):  
Reaction Mechanisms ◽  
Curing Kinetics ◽  
Isoconversional Method ◽  
Cure Reaction ◽  
Kinetics Of

Influence of carbon nanofillers on the curing kinetics of epoxy-amine resin

RSC Advances ◽  
2015 ◽  
Vol 5 (110) ◽  
pp. 90437-90450 ◽  
Author(s):  
L. Vertuccio ◽  
S. Russo ◽  
M. Raimondo ◽  
K. Lafdi ◽  
L. Guadagno
Keyword(s):  
Activation Energy ◽  
Curing Kinetics ◽  
Isoconversional Method ◽  
Epoxy Amine ◽  
Carbon Nanofillers ◽  
Advanced Isoconversional Method ◽  
Kinetics Of

Variation of the activation energy with conversion obtained by “advanced isoconversional method”.

scholarly journals Curing kinetics of alkyd/melamine resin mixtures

2009 ◽  
Vol 63 (6) ◽  
pp. 629-635 ◽  
Author(s):  
Mirjana Jovicic ◽  
Radmila Radicevic
Keyword(s):  
Castor Oil ◽  
Protective Coatings ◽  
Curing Kinetics ◽  
Isoconversional Method ◽  
Curing Temperature ◽  
Melamine Resin ◽  
Alkyd Resins ◽  
Synthetic Resins ◽  
Isothermal Kinetic ◽  
Kinetics Of

Alkyd resins are the most popular and useful synthetic resins applied as the binder in protective coatings. Frequently they are not used alone but are modified with other synthetic resins in the manufacture of the coatings. An alkyd/melamine resin mixture is the usual composition for the preparation of coating called 'baking enamel' and it is cured through functional groups of resins at high temperatures. In this paper, curing kinetics of alkyd resins based on castor oil and dehydrated castor oil with melamine resin, has been studied by DSC method with programmed heating and in isothermal mode. The results determined from dynamic DSC curves were mathematically transformed using the Ozawa isoconversional method for obtaining the isothermal data. These results, degree of curing versus time, are in good agreement with those determined by the isothermal DSC experiments. By applying the Ozawa method it is possible to calculate the isothermal kinetic parameters for the alkyd/melamine resin mixtures curing using only calorimetric data obtained by dynamic DSC runs. Depending on the alkyd resin type and ratio in mixtures the values of activation energies of curing process of resin mixtures are from 51.3 to 114 kJ mol-1. The rate constant of curing increases with increasing the content of melamine resin in the mixture and with curing temperature. The reaction order varies from 1.12 to 1.37 for alkyd based on dehydrated castor oil/melamine resin mixtures and from 1.74 to 2.03 for mixtures with alkyd based on castor oil. Based on the results obtained, we propose that dehydrated castor oil alkyd/melamine resin mixtures can be used in practice (curing temperatures from 120 to 160?C).

Study on of Cure Reaction Kinetics of Polyamide-Imide-Epoxy Resin

2013 ◽  
Vol 746 ◽  
pp. 128-131 ◽  
Author(s):  
Hai Yang Shi ◽  
Lei Zhang ◽  
Jin Hai Cui
Keyword(s):  
Epoxy Resin ◽  
Reaction Rate ◽  
Curing Kinetics ◽  
Frequency Factor ◽  
Reaction Rate Constant ◽  
The Novel ◽  
Heating Rates ◽  
Cure Reaction ◽  
Kinetics Of ◽  
Dsc Curves

The novel polyamide-imide-epoxy resin was prepared by modification of epoxy resin with polyamide-imide. The DSC curves of the polyamide-imide-epoxy resin were obtained with different heating rates. Moreover, the curing kinetics were also studied by using Kissinger equation, Ozawa and Crane formula, the activation energy of 55.24kJ/mol was acquired, reaction order was 0.9, the frequency factor A and the reaction rate constant Kp at the peak temperature of the reaction was also obtained.

scholarly journals Curing kinetics of two commercial urea-formaldehyde adhesives studied by isoconversional method

2011 ◽  
Vol 65 (6) ◽  
pp. 717-726 ◽  
Author(s):  
Mladjan Popovic ◽  
Jaroslava Budinski-Simendic ◽  
Mirjana Jovicic ◽  
Joszef Mursics ◽  
Milanka Djiporovic-Momcilovic ◽  
...  
Keyword(s):  
Activation Energy ◽  
Urea Formaldehyde ◽  
Curing Kinetics ◽  
Isoconversional Methods ◽  
Isoconversional Method ◽  
Reaction Enthalpy ◽  
Heating Rates ◽  
Scanning Calorimetry ◽  
Dsc Measurements ◽  
Kinetics Of

Differential scanning calorimetry (DSC) was used to evaluate the curing kinetics of two commercial urea-formaldehyde (UF) adhesives having different formaldehyde to urea (F/U) ratio of 1.112 (UF1) and 1.086 (UF2). DSC measurements were done in dynamic scanning regime with heating rates of 5, 10, 15 and 20?C?min-1 in order to determine the activation energy for each adhesive. Obtained data were analyzed using isoconversional methods with application of Ozawa-Flynn-Wall and Kissinger-Akahira-Sunose kinetic models. In addition, different catalyst levels were tested at the heating rate of 10?C/min. Results showed that the adhesive with higher F/U ratio achieved higher activation energy, while having lower peak temperature of curing reaction. It was also noticed that the increase of catalyst level influenced the increase of reaction enthalpy of the adhesive with lower F/U ratio.

Effect of Diamine Nature on Curing Kinetics of N,N'-Hexamethylene Bis(maleimide) and Properties of Glass-Reinforced Plastics

INEOS OPEN ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 64-70
Author(s):  
O. N. Zabegaeva ◽  
◽  
D. A. Sapozhnikov ◽  
B. A. Bayminov ◽  
S. A. Zinov'eva ◽  
...  
Keyword(s):  
Curing Kinetics ◽  
Reinforced Plastics ◽  
Kinetics Of

scholarly journals Properties and curing kinetics of C21-based reactive polyamides as epoxy-curing agents derived from tung oil

2010 ◽  
Vol 42 (1) ◽  
pp. 51-57 ◽  
Author(s):  
Kun Huang ◽  
Jianling Xia ◽  
Xiaohua Yang ◽  
Mei Li ◽  
Haiyang Ding
Keyword(s):  
Curing Kinetics ◽  
Tung Oil ◽  
Epoxy Curing ◽  
Curing Agents ◽  
Kinetics Of
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