Enhanced thermal conductivity of polyamide 6/polypropylene (PA6/PP) immiscible blends with high loadings of graphite

被引：30

作者：

Zhou, Shengtai ^{[1
]}

Luo, Wei ^{[1
]}

Zou, Huawei ^{[1
]}

Liang, Mei ^{[1
]}

Li, Shengzhao ^{[1
]}

机构：

[1] Sichuan Univ, Polymer Res Inst, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China

来源：

JOURNAL OF COMPOSITE MATERIALS | 2016年 / 50卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Polyamide; 6; polypropylene; immiscible blend; thermal conductivity; flake graphite; MULTIWALLED CARBON NANOTUBES; PHASE-CHANGE MATERIALS; MECHANICAL-BEHAVIOR; ELECTRICAL-PROPERTIES; DENSITY POLYETHYLENE; POLYMER COMPOSITES; NANOCOMPOSITES; FUNCTIONALIZATION; CRYSTALLIZATION; MORPHOLOGY;

D O I：

10.1177/0021998315574753

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

In this study, flake graphite was dispersed in immiscible polyamide 6/polypropylene (PA6/PP) blends to improve their thermal conductivity. Blends of PA6/PP were prepared in different relative fractions and thermal conductivity of the graphite-containing blends showed enhanced values for immiscible blends when compared with those of mono-PA6-based composites at the same graphite loading fractions. Moreover, a PA6/PP mass ratio of 8/2 showed better dispersion of graphite and less interfacial defects, resulting in better heat conduction ability when compared with other immiscible blends. At graphite loading of 40wt%, thermal conductivity of PA6/PP/graphite composite reached 2.896W/mK, which is nearly 40% higher than that of mono-PA6/graphite composite. Morphology and melt rheology measurements confirmed that flake graphite began to form thermally conductive network at 30wt% in immiscible blends which is crucial to the improvement of thermal conductivity.

引用

页码：327 / 337

页数：11

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