Heating rate effects on thermal analysis measurement ofTgin composite materials

Yong, A.X.H.; Sims, G D; Gnaniah, S J P; Ogin, S.L.; Smith, Paul A.

doi:10.1080/20550340.2017.1315908

Cited by 20 publications

(17 citation statements)

References 14 publications

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“…Two characteristic changes in the storage modulus could be distinguished. The first change, between 50 and 70 °C, was the drop of storage modulus, which was related to glass transition temperature (T g ) at around 60 °C, as reported by Yong et al [ 47 ]. The second change, between 80 and 100 °C, was recognized as the beginning of cold crystallization process.…”

Section: Resultsmentioning

confidence: 65%

Dual Plasticizer/Thermal Stabilizer Effect of Epoxidized Chia Seed Oil (Salvia hispanica L.) to Improve Ductility and Thermal Properties of Poly(Lactic Acid)

et al. 2021

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The use of a new bio-based plasticizer derived from epoxidized chia seed oil (ECO) was applied in a poly(lactic acid) (PLA) matrix. ECO was used due to its high epoxy content (6.7%), which led to an improved chemical interaction with PLA. Melt extrusion was used to plasticize PLA with different ECO content in the 0–10 wt.% range. Mechanical, morphological, and thermal characterization was carried out to evaluate the effect of ECO percentage. Besides, disintegration and migration tests were studied to assess the future application in packaging industry. Ductile properties improve by 700% in elongation at break with 10 wt.% ECO content. Field emission scanning electron microscopy (FESEM) showed a phase separation with ECO content equal or higher than 7.5 wt.%. Thermal stabilization was improved 14 °C as ECO content increased. All plasticized PLA was disintegrated under composting conditions, not observing a delay up to 5 wt.% ECO. Migration tests pointed out a very low migration, less than 0.11 wt.%, which is to interest to the packaging industry.

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Section: Resultsmentioning

confidence: 65%

Dual Plasticizer/Thermal Stabilizer Effect of Epoxidized Chia Seed Oil (Salvia hispanica L.) to Improve Ductility and Thermal Properties of Poly(Lactic Acid)

et al. 2021

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“…The Tg obtained from the DMA is more accurate compared to that of the DSC according to previous literature. 35 The Tg from the tan δ curve of the DMA studies showed broader peaks compared to that of the DSC result. However, similar trend was obtained from the graphs of DMA and DSC.…”

Section: Dsc Testmentioning

confidence: 91%

Flame-retardant properties of particleboard made from coconut fibre using modified potato starch as a binder

Owodunni¹

2020

JPS

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This study seeks to evaluate the flame-retardant characteristics of experimental particleboard manufactured from coconut fibre using modified potato starch as a green binder. The coconut fibre was used as a replacement for the wood as a raw material in particleboard production. The adhesives used in the process were made by modifying potato starch with citric acid and glutardialdehyde. No flame-retardant additive was added during the processing, and this was done to evaluate the flame-retardant potential of the experimental coconut fibre-based particleboards. The limited oxygen index (LOI) test, the bomb calorimetry, the differential scanning calorimetry (DSC) and the dynamic mechanical analysis (DMA) were used to evaluate the thermal properties and flame retardancy rate of such particleboards. The result of the DMA showed that the coconut fibre-based particleboards had good storage modulus with heat. The bomb calorimeter and LOI results also supported the flame-retardant performance of the panels. Based on the evaluations, it could be prescribed that the coconut fibre particleboard made with citric acid modified potato starch (CAMPS) exhibited the best flame-retardant properties.

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“…A nitrogen atmosphere was available in the heating chamber. The Tg estimation was performed as Yong et al [ 37 ] proposed. Accordingly, analysis of the curve (temperature dependence of dimensional change) was obtained by a sensitive probe while having plotted the first derivation of that dependency.…”

Section: Methodsmentioning

confidence: 99%

“…A nitrogen atmosphere was available in the heating chamber. The Tg estimation was performed as Yong et al [37] proposed. Accord- ets, the PCBs were reflowed in a forced air convection oven Mistral 260 (Technoprint, Ermelo, The Netherlands) with three temperature zones.…”

Section: Methodsmentioning

confidence: 99%

Investigation of Impacts on Printed Circuit Board Laminated Composites Caused by Surface Finish Application

2021

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The purpose of this study was to compare the strength of the bond between resin and glass cloth for various composites (laminates) and its dependence on utilized soldering pad surface finishes. Moreover, the impact of surface finish application on the thermomechanical properties of the composites was evaluated. Three different laminates with various thermal endurances were included in the study. Soldering pads were covered with OSP and HASL surface finishes. The strength of the cohesion of the resin upper layer was examined utilizing a newly established method designed for pulling tests. Experiments studying the bond strength were performed at a selection of laminate temperatures. Changes in thermomechanical behavior were observed by thermomechanical and dynamic mechanical analyses. The results confirmed the influence of the type of laminate and used surface finish on bond strength. In particular, permanent polymer degradation caused by thermal shock during HASL application was observed in the least thermally resistant laminate. A response to thermal shock was detected in thermomechanical properties of other laminates as well, but it does not seem to be permanent.

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Heating rate effects on thermal analysis measurement ofT_gin composite materials

Cited by 20 publications

References 14 publications

Dual Plasticizer/Thermal Stabilizer Effect of Epoxidized Chia Seed Oil (Salvia hispanica L.) to Improve Ductility and Thermal Properties of Poly(Lactic Acid)

Dual Plasticizer/Thermal Stabilizer Effect of Epoxidized Chia Seed Oil (Salvia hispanica L.) to Improve Ductility and Thermal Properties of Poly(Lactic Acid)

Flame-retardant properties of particleboard made from coconut fibre using modified potato starch as a binder

Investigation of Impacts on Printed Circuit Board Laminated Composites Caused by Surface Finish Application

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