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Link to original content: https://pubmed.ncbi.nlm.nih.gov/29445228
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. 2018 Feb 14;8(1):3045.
doi: 10.1038/s41598-018-21208-0.

A Study on Curing Kinetics of Nano-Phase Modified Epoxy Resin

Hailing Ma  1 , Xin Zhang  2 , Feifei Ju  3 , Sang-Bing Tsai  4
Affiliations

A Study on Curing Kinetics of Nano-Phase Modified Epoxy Resin

Hailing Ma et al. Sci Rep. .

Abstract

In this paper, DSC curves at different heating rates were measured by DSC, the characteristic curing temperature was determined, and the optimum curing conditions were obtained. The KAS method, Friedman method and FWO method were used to analyze the DSC curves respectively. The kinetic parameters and the reaction mechanism function of the curing system were obtained, and the results of different analytical methods were compared and analyzed. Result from fitting and verification of the curing kinetic model for the curing system of the nano-phase modified epoxy resin further demonstrates that the nano-particle could play a catalytic role in the curing reaction of the epoxy resin and could reduce the apparent activation energy of the system, thus it is considered as a breakthrough in the field of resin research.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Figure 1
Figure 1
Curing principle.
Figure 2
Figure 2
Thermal weight loss curve of curing agent.
Figure 3
Figure 3
3 Dynamic curing DSC curves for different curing systems-a: pure epoxy exothermic peak with temperature curve.
Figure 4
Figure 4
3 Dynamic curing DSC curves for different curing systems-b: pure epoxy exothermic peak with time curve.
Figure 5
Figure 5
3 Dynamic curing DSC curves for different curing systems-c: modified epoxy resin exothermic peak with temperature curve.
Figure 6
Figure 6
3 Dynamic curing DSC curves for different curing systems-d: modified epoxy exothermic peak with time curve.
Figure 7
Figure 7
KAS method to calculate the linear regression curve of curing reaction -a: 618 epoxy resin.
Figure 8
Figure 8
KAS method to calculate the linear regression curve of curing reaction -b: nano-phase modified epoxy resin.
Figure 9
Figure 9
The linear regression curve of the curing reaction calculated by the Friedman method-a: 618 epoxy resin.
Figure 10
Figure 10
The linear regression curve of the curing reaction calculated by the Friedman method-b: nano-phase modified epoxy resin.
Figure 11
Figure 11
Friedman method analysis results -a: 618 epoxy resin.
Figure 12
Figure 12
Friedman method analysis results -b: nano-phase modified epoxy resin.
Figure 13
Figure 13
FWO method for calculating the linear regression curve of the curing reaction -a: 618 epoxy resin.
Figure 14
Figure 14
FWO method for calculating the linear regression curve of the curing reaction -b: nano-phase modified epoxy resin.
Figure 15
Figure 15
FWO method analysis results -a: 618 epoxy resin.
Figure 16
Figure 16
FWO method analysis results -b: nano-phase modified epoxy resin.
Figure 17
Figure 17
Curing system lnβ-Tp linear regression curve.
Figure 18
Figure 18
Reaction mechanism function fitting curve-a.
Figure 19
Figure 19
Reaction mechanism function fitting curve-b.
Figure 20
Figure 20
Reaction mechanism function fitting curve-c.
Figure 21
Figure 21
Reaction mechanism function fitting curve-d.
Figure 22
Figure 22
Reaction mechanism function fitting curve-e.
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