Poli̇ami̇d 6/Grafen Nanotabakali (Pa6/Gnp) Kompozi̇tleri̇n Termo-Mekani̇k Özelli̇kleri̇ni̇n Karakteri̇zasyonu

Abstract

ÖZBu çalışmada, Poliamid 6/Grafen Nanotabakalı (PA6/GNP) kompozitlerin yapısal ve termo-mekanik özelliklerine dolgu maddesi olarak kullanılan nanotabakalı grafen partiküllerinin etkisi incelenmiştir. Bu amaçla çift vidalı ekstrüzyon cihazı ile eriyik harmanlama yöntemi kullanılarak PA6/GNP kompozitleri hazırlanmıştır. Kompozitler enjeksiyonlu kalıplama yöntemi kullanılarak test numunesi haline getirilmiştir. XRD ve DSC analiz sonuçları γ kristal fazının kompozitlerde baskın olduğunu göstermiştir. GNP katkılı PA6 kompozitlerin katkısız PA6' ya göre termal olarak daha kararlı oldukları TGA analiz sonuçları ile belirlenmiştir. Kompozitlerin yeni ve baskın kristal yapıları sayesinde termo-mekanik özelliklerinin iyileştiği sonucuna ulaşılmıştır.Anahtar Kelimeler: Grafen Nanotabakalı Partikül (GNP), Poliamid 6 (PA6), Vicat Yumuşama Sıcaklığı, Isıl Bozunma Sıcaklığı (HDT), Eğme Modülü CHARACTERIZATION OF THERMO-MECHANICAL PROPERTIES OF POLYAMIDE 6/GRAPHENE NANOPLATES (PA6/GNP) COMPOSITES ABSTRACTIn this study, the effect of Graphene Nanoplates (GNP) as filler on the structure and thermo-mechanical properties of the Polyamide 6/Graphene Nanoplates (PA6/GNP) composites was investigated. For this purpose, PA6/GNP composites were prepared through a melt mixing method with twin screw extruder. These composites were formed into test samples using the injection molding method. γ phase crystal form in the PA6/GNP composites was shown to be dominated by XRD and DSC results. TGA analysis results indicated that the GNP filled PA6 composites were more thermally stable than the unfilled PA6. As a result, thermo-mechanical properties of PA6/GNP composites improved due to the new and dominant crystal structural form.

High-damping polyurethane-based composites modified with amino-functionalized graphene

“…Moreover, most studies have targeted single polymer matrices for graphene incorporation, and the effects of graphene or functionalized graphene on the properties and microphase structure of interpenetrating-polymer-network-type matrices have rarely been reported. [12][13][14][15][16][17][18][19][20] In this study, unmodified or amino-functionalized GNP (NGNP) were introduced as fillers into polyurethane/poly (butyl methacrylate) (PU/PBMA) composites through in situ polymerization. Moreover, to monitor the microstructural evolution of the functionalized-graphene-modified polymer composites and the corresponding changes in their properties, the effects of the fillers on the microstructural, thermomechanical, and damping characteristics of the resulting composites were comprehensively investigated.…”

“…Moreover, most studies have targeted single polymer matrices for graphene incorporation, and the effects of graphene or functionalized graphene on the properties and microphase structure of interpenetrating-polymer-network-type matrices have rarely been reported. 12–20…”