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Statements

Subject Item
n2:RIV%2F49777513%3A23220%2F14%3A43922013%21RIV15-MSM-23220___
rdf:type
n11:Vysledek skos:Concept
rdfs:seeAlso
http://www.sciencedirect.com/science/article/pii/S0141391014001360
dcterms:description
This study evaluated new experimental parameters and end-point criteria for determining the thermal endurance of fibreglass-reinforced epoxy laminates via thermal analysis. Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dynamic mechanical analysis (DMA) were used in these experiments. The composite was exposed to temperatures ranging from 170 to 200°C for times ranging from 10 to 480 hours in accord with IEC 60216. The maximum heat flow temperature (DSC Tmax) for the first thermo-oxidative reaction, the maximum weight loss temperature (DTGA Tmax), and the maximum decomposition rate were investigated. The change in the glass transition temperature after the thermal ageing was also determined using DMA. The structural changes in the samples were examined via Fourier transform infrared spectroscopy and microscopic analysis. Oxidative degradation at the surface accompanied by pyrolytic degradation in the bulk of the sample was observed. The end-point criteria were derived for all applied methods based on the time required for the composite structure to delaminate considerably. The obtained data were used to construct Arrhenius diagrams, and cross-correlation was sought among all experimental parameters. These measurements demonstrated that the DTGA Tmax, DMA Tg, and DSC Tmax characterizes the ageing process sufficiently well within the applied temperature interval and satisfy the IEC 60216 requirements. This study evaluated new experimental parameters and end-point criteria for determining the thermal endurance of fibreglass-reinforced epoxy laminates via thermal analysis. Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dynamic mechanical analysis (DMA) were used in these experiments. The composite was exposed to temperatures ranging from 170 to 200°C for times ranging from 10 to 480 hours in accord with IEC 60216. The maximum heat flow temperature (DSC Tmax) for the first thermo-oxidative reaction, the maximum weight loss temperature (DTGA Tmax), and the maximum decomposition rate were investigated. The change in the glass transition temperature after the thermal ageing was also determined using DMA. The structural changes in the samples were examined via Fourier transform infrared spectroscopy and microscopic analysis. Oxidative degradation at the surface accompanied by pyrolytic degradation in the bulk of the sample was observed. The end-point criteria were derived for all applied methods based on the time required for the composite structure to delaminate considerably. The obtained data were used to construct Arrhenius diagrams, and cross-correlation was sought among all experimental parameters. These measurements demonstrated that the DTGA Tmax, DMA Tg, and DSC Tmax characterizes the ageing process sufficiently well within the applied temperature interval and satisfy the IEC 60216 requirements.
dcterms:title
Determination of the thermal endurance of PCB FR4 epoxy laminates via thermal analyses Determination of the thermal endurance of PCB FR4 epoxy laminates via thermal analyses
skos:prefLabel
Determination of the thermal endurance of PCB FR4 epoxy laminates via thermal analyses Determination of the thermal endurance of PCB FR4 epoxy laminates via thermal analyses
skos:notation
RIV/49777513:23220/14:43922013!RIV15-MSM-23220___
n5:aktivita
n15:P
n5:aktivity
P(ED2.1.00/03.0094)
n5:cisloPeriodika
July
n5:dodaniDat
n8:2015
n5:domaciTvurceVysledku
n6:2306409 n6:9625488 n6:1250396
n5:druhVysledku
n16:J
n5:duvernostUdaju
n19:S
n5:entitaPredkladatele
n10:predkladatel
n5:idSjednocenehoVysledku
10848
n5:idVysledku
RIV/49777513:23220/14:43922013
n5:jazykVysledku
n13:eng
n5:klicovaSlova
TGA; DSC; thermal analyses; PCB FR4; epoxy laminate; thermal endurance
n5:klicoveSlovo
n12:DSC n12:thermal%20analyses n12:TGA n12:PCB%20FR4 n12:epoxy%20laminate n12:thermal%20endurance
n5:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n5:kontrolniKodProRIV
[FB324145866E]
n5:nazevZdroje
Polymer Degradation and Stability
n5:obor
n18:JA
n5:pocetDomacichTvurcuVysledku
3
n5:pocetTvurcuVysledku
3
n5:projekt
n17:ED2.1.00%2F03.0094
n5:rokUplatneniVysledku
n8:2014
n5:svazekPeriodika
105
n5:tvurceVysledku
Polanský, Radek Prosr, Pavel Čermák, Michal
s:issn
0141-3910
s:numberOfPages
9
n9:doi
10.1016/j.polymdegradstab.2014.03.043
n20:organizacniJednotka
23220