Complex effect of graphite nanoplatelets on performance of HDPE/PA66 microfibrillar composites

被引：18

作者：

Kelnar, Ivan ^{[1
]}

Bal, Umitcan ^{[1
]}

Zhigunov, Alexander ^{[1
]}

Kapralkova, Ludmila ^{[1
]}

Fortelny, Ivan ^{[1
]}

Krejcikova, Sabina ^{[1
]}

Kredatusova, Jana ^{[1
]}

机构：

[1] Acad Sci Czech Republ, Inst Macromol Chem, Heyrovskeho Nam 2, CR-16206 Prague, Czech Republic

来源：

COMPOSITES PART B-ENGINEERING | 2018年 / 144卷

关键词：

Polymer-matrix composites; Interface/interphase; Mechanical testing; Extrusion; IMMISCIBLE POLYMER BLENDS; MECHANICAL-PROPERTIES; GRAPHENE OXIDE; REINFORCED COMPOSITES; NANOCOMPOSITES; MORPHOLOGY; INTERFACE; DYNAMICS;

D O I：

10.1016/j.compositesb.2018.03.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of nanofillers (NF) on parameters of polymer blends in microfibrillar composites (MFC) is complex due the effect of NF on melt drawing. This work concerns HDPE/PA66 modified with graphite nanoplatelets (GNP) prepared by different mixing protocols. GNP influence the dispersed phase size in the original blend negligibly and mostly lead to finer high-aspect ratio fibrils, i.e. GNP rather support elongation of inclusions than coalescence in the course of drawing. Favourable mechanical behaviour, exceeding predicted one, was found with low GNP content using the PA66 masterbatch. MFC with similar structure and GNP localization in PA66 show marked differences in properties depending on mixing protocol. Antagonistic effects found for the HDPE masterbatch indicate high effect of GNP migration between the components which affects the interphase by variation of crystallinity. The results confirm complex effect of GNP and dominancy of other GNP-induced effects over dual reinforcement with GNP and PA66 microfibrils.

引用

页码：220 / 228

页数：9

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