Kissinger-Style Kinetic Analysis for Sintering Dilatometry Data

Oliver, Christian; Schuh, Christopher A.

doi:10.1007/s11661-021-06399-y

Cited by 10 publications

(3 citation statements)

References 59 publications

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“…These newly formed dimers and trimers had lower reactivity toward epoxy groups, which hindered the radical initiation of the thiol-epoxy reaction [41]. Therefore, as the thiol hardener content increased, the curing temperature and E a required for the reaction to occur also increased [42]. This is evident in Figure S3 and Table S5, which show the kinetic coefficients and calculated activation energies obtained from the Kissinger model, respectively, analyzed as a function of the thiol hardener content (wt%).…”

Section: Comparison Of Odor Intensities and Voc Emissions For Dpetmp ...mentioning

confidence: 99%

Effect of Synthetic Low-Odor Thiol-Based Hardeners Containing Hydroxyl and Methyl Groups on the Curing Behavior, Thermal, and Mechanical Properties of Epoxy Resins

et al. 2023

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A novel thiol-functionalized polysilsesqioxane containing hydroxyl and methyl groups was synthesized using a simple acid-catalyzed sol–gel method to develop an epoxy hardener with low odor, low volatile organic compound (VOC) emissions, and fast curing at low temperatures. The synthesized thiol-based hardeners were characterized using Fourier transform infrared spectroscopy, nuclear magnetic resonance, thermogravimetric analysis (TGA), and gel permeation chromatography and compared with commercially available hardeners in terms of odor intensity and VOC emissions using the air dilution olfaction method and VOC analysis. The curing behavior and thermal and mechanical properties of the epoxy compounds prepared with the synthesized thiol-based hardeners were also evaluated. The results showed that synthetic thiol-based hardeners containing methyl and hydroxyl groups initiated the curing reaction of epoxy compounds at 53 °C and 45 °C, respectively. In contrast, commercial thiol-based hardeners initiated the curing reaction at 67 °C. Additionally, epoxy compounds with methyl-containing synthetic thiol-based hardeners exhibited higher TGA at a 5% weight loss temperature (>50 °C) and lap shear strength (20%) than those of the epoxy compounds with commercial thiol-based hardeners.

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Section: Comparison Of Odor Intensities and Voc Emissions For Dpetmp ...mentioning

confidence: 99%

Effect of Synthetic Low-Odor Thiol-Based Hardeners Containing Hydroxyl and Methyl Groups on the Curing Behavior, Thermal, and Mechanical Properties of Epoxy Resins

et al. 2023

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“…The peak temperature is considered to be the temperature at which the reaction is strongest [22] In the present study, not DTA but dilatometric measurements were used for the Kissinger plots. Recent research, as shown in [23], follows the same approach. The peaks used are identified in the first deviation of the dilatometer curves recorded in the quenching dilatometer experiments.…”

Section: Influence Of the Heating Rate On The Melting Processmentioning

confidence: 95%

Transient Liquid Phase Sintering of PM Steel—A Matter of the Heating Rate

Geroldinger¹,

Calderon²,

Gierl‐Mayer³

et al. 2021

Metals

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Powder metallurgy (PM) offers several variants to introduce alloying elements for establishing the desired final composition. One route is the master alloy (MA) approach. The composition and the elements contained in the MA can be adjusted to obtain a liquid phase that penetrates through the interconnected pore network and thus enhances the distribution of the alloying elements and the homogenization of the microstructure. Such a liquid phase is often of a transient character, and therefore the amount of liquid formed and the time the liquid is present during the sintering are highly dependent on the heating rates. The heating rate has also an impact on the reaction temperatures, and therefore, by properly adjusting the heating rate, it is possible to sinter PM-steels alloyed with Fe-Cr-Si-C-MA at temperatures below 1250 °C. The present study shows the dependence of the melting regimes on the heating rate (5, 10, 20, 120 K/min) represented by “Kissinger plots”. For this purpose, liquid phase formation and distribution were monitored in quenching dilatometer experiments with defined heating up to different temperatures (1120 °C, 1180 °C, 1250 °C, 1300 °C) and subsequent quenching. Optimum sintering conditions for the materials were identified, and the concept was corroborated by C and O analysis, CCT diagrams, metallographic sections, and hardness measurements.

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“…When the Kissinger approach is applied specifically to densification data consistent with the form of Eq. ( 1), we derive the following Arrhenius analysis [35] :…”

Section: -The W-cr Systemmentioning

confidence: 99%

The Structural Evolution and Densification Mechanisms of Nanophase Separation Sintering

Oliver

Schuh

2021

Metall Mater Trans A

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Kissinger-Style Kinetic Analysis for Sintering Dilatometry Data

Abstract: y. The Version of Record is the version of the article after copy-editing and typesetting, and connected to open research data, open protocols, and open code where available. Any supplementary information can be found on the journal website, connected to the Version of Record.

Cited by 10 publications

References 59 publications

Effect of Synthetic Low-Odor Thiol-Based Hardeners Containing Hydroxyl and Methyl Groups on the Curing Behavior, Thermal, and Mechanical Properties of Epoxy Resins

Effect of Synthetic Low-Odor Thiol-Based Hardeners Containing Hydroxyl and Methyl Groups on the Curing Behavior, Thermal, and Mechanical Properties of Epoxy Resins

Transient Liquid Phase Sintering of PM Steel—A Matter of the Heating Rate

The Structural Evolution and Densification Mechanisms of Nanophase Separation Sintering

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