Dynamic cure kinetics of epoxy resins using an amine-containing borate as a latent hardener

The cure kinetics of epoxy/epoxy-grafted nano-aluminum oxide using 4, 4'-diaminodiphenylsulphone (DDS) as the curing agent was studied by nonisothermal differential scanning calorimetry (DSC) at different heating rates. The activation energy (Ea) was determined by Flynn-Wall-Ozawa method, and kinetic model was predicted by Málek method. TheEa values of epoxy/nano-aluminum oxide/DDS systems are generally higher than those of epoxy /DDS. These imply that the addition of nano-aluminum oxide would inhibit the chain mobility of the epoxy resins. Furthermore, autocatalytic model was found to be appropriate to describe the kinetics of above mentioned reactions. The predicted curves fit well with the experimentally obtained curves.

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Influence of oxidation treatment of carbon powders on the cure kinetics of amine cured tetrafunctional epoxy resins

Polymer International ◽

10.1002/pi.1994.210350407 ◽

1994 ◽

Vol 35 (4) ◽

pp. 345-353 ◽

Cited By ~ 2

Author(s):

M. A. Andres ◽

R. Miguez ◽

M. A. Corcuera ◽

I. Mondragon

Keyword(s):

Epoxy Resins ◽

Cure Kinetics ◽

Oxidation Treatment ◽

Kinetics Of ◽

Tetrafunctional Epoxy

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Luminescence spectroscopy as a tool for testing of cure kinetics of epoxy resins

Polymer Testing ◽

10.1016/j.polymertesting.2020.106496 ◽

2020 ◽

Vol 86 ◽

pp. 106496

Author(s):

Vojtěch Křesálek ◽

Michaela Mikuličová

Keyword(s):

Epoxy Resins ◽

Cure Kinetics ◽

Luminescence Spectroscopy ◽

Kinetics Of

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Kinetic Studies on Epoxy Resins Cured with a Novel Polyamine

High Performance Polymers ◽

10.1088/0954-0083/4/1/005 ◽

1992 ◽

Vol 4 (1) ◽

pp. 41-48 ◽

Cited By ~ 2

Author(s):

R. M. V. G. K. Rao ◽

A. Padma ◽

H. S. Patel

Keyword(s):

Activation Energy ◽

Epoxy Resin ◽

Epoxy Resins ◽

Kinetic Studies ◽

Cure Kinetics ◽

Curing Process ◽

Kinetics Of

Differential scanning calorimeny was used to study the cure kinetics of three epoxy resin systems cured with two hardeners: diaminodiphenylmethane (DDM) and a poly (keto-amine) (PA). The results showved that the curing of the epoxy resins by PA occurs at higher temperatures and the activation energy for PA curing was higher compared with the DDM curing process, showing the er reactivity of PA.

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Cure kinetics of liquid crystalline epoxy resins based on biphenyl mesogen

Journal of Thermal Analysis and Calorimetry ◽

10.1007/s10973-014-3647-0 ◽

2014 ◽

Vol 117 (1) ◽

pp. 481-488 ◽

Cited By ~ 7

Author(s):

Yuzhan Li ◽

Michael R. Kessler

Keyword(s):

Epoxy Resins ◽

Liquid Crystalline ◽

Cure Kinetics ◽

Liquid Crystalline Epoxy ◽

Kinetics Of

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Dimeric Liquid Crystalline Epoxy Resins Containing Azo Group: Mesogenic Behavior and Curing with Anhydride

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.123-125.955 ◽

2010 ◽

Vol 123-125 ◽

pp. 955-958

Author(s):

De Wen Zhou ◽

Li Yan Liang ◽

Man Geng Lu

Keyword(s):

Epoxy Resins ◽

Liquid Crystalline ◽

Cure Kinetics ◽

X Ray Diffraction ◽

Melting Points ◽

Heating Rates ◽

Scanning Calorimetry ◽

X Ray ◽

Azo Group ◽

Kinetics Of

A series of dimeric liquid crystalline (LC) epoxy monomers containing azo groups with different length of central spacers were synthesized. The mesogenic behavior of these monomers was characterized by differential scanning calorimetry(DSC), polarized optical microscopy (POM) and wide-angle X-Ray diffraction(WAXS). Like other dimeric LC epoxy monomers, the melting points, clear points and mesophase of these compounds were influenced by the carbon numbers of the central spacers. Cure kinetics of these monomers with anhydride was studied by non-isothermal DSC at different heating rates. With the increasing of conversion, the values of activation energy show a tendency to decrease. The formation and development of LC phase during curing were also studied by POM. Finally LC thermosets with nematic phase were obtained.

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