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The rheological and thermal conductivity study on PA/COC blend filled by Boron Nitride

Thermally conductive and electrically insulating polymer/boron nitride (BN) composites are highly attractive for various applications in many thermal management fields. However, the preparation methods for polymer/BN composites with prescribed performance have usually caused difficulties in the mate... Full description

Published: Red Hook, NY, Curran Associates, 2016
Kongresse: International Conference / Annual Meeting of the Polymer Processing Society 32 2016.07.25-2016.07.29 Lyon, FR
PPS 32 2016.07.25-2016.07.29 Lyon, FR
Polymer Processing Society Annual Meeting 32nd 2016.07.25-2016.07.29 Lyon, FR
PPS -32 2016.07.25-2016.07.29 Lyon, FR
Contained in: PPS, Polymer Processing Society Annual Meeting, 32 (2016), p. 90-94
Journal Title: PPS, Polymer Processing Society Annual Meeting, 32
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Additional Keywords: ABKUEHLUNGSGESCHWINDIGKEIT
AFFINITAET
BORNITRID
ELEKTRONENMIKROSKOPIE
KRISTALLINITAET
POLYMER
POLYMERMISCHUNG
STOFFGEMISCH
VERBUNDWERKSTOFF
VOLUMENFRAKTION
WAERMELEITFAEHIGKEIT
WAERMEMANAGEMENT
Notes: Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt-digital GmbH
Copyright: (C) Alle Rechte beim Herausgeber
Physical Description: 5 Seiten, 12 Quellen
PPN (Catalogue-ID): WTI062717650
Note: WTI TEMA DB
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Internes Format
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520 |a Thermally conductive and electrically insulating polymer/boron nitride (BN) composites are highly attractive for various applications in many thermal management fields. However, the preparation methods for polymer/BN composites with prescribed performance have usually caused difficulties in the material post processing. Therefore, using polymer blends with selective localization can be utilized as a solution for this problem. The effect of selective localization of boron nitride (BN) particles on the thermal conductivity of immiscible PA/COC blends is studied. The aim of the present work is to use PA/COC blend with co-continuous morphology in order to produce PA/COC/BN thermally conductive composites with minimum volume fraction of fillers. The efficiency of this method is evaluated through a comparison between thermal conductivity of PA/BN and PA/COC/BN systems. The rheological results and scanning electron microscopy (SEM) images reveal a greater affinity of BN with PA compared to COC phase. It is also shown that in order to form a thermal path and obtain an appropriate thermal conductivity, high concentrations of BN (≥30 wt. %) are needed. Thermal conductivity measurements show that the thermal conductivity of PA/COC/BN composites are lower than what expected based on the mixture law for polymer blends in comparison with PA/BN composites with the same concentration of BN in PA. The cooling rate is found to affect the thermal conductivity of the composite samples which is explained in terms of the crystallinity of PA. 
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