Improving the mechanical properties of laser-sintered polyamide 12 through incorporation of carbon nanotubes

被引：94

作者：

Bai, Jiaming ^{[1
]}

Goodridge, Ruth D. ^{[2
]}

Hague, Richard J. M. ^{[2
]}

Song, Mo ^{[3
]}

机构：

[1] Loughborough Univ Technol, Wolfson Sch Mech & Mfg Engn, Loughborough LE11 3TU, Leics, England

[2] Univ Nottingham, Nottingham NG7 2RD, England

[3] Loughborough Univ Technol, Dept Mat, Loughborough LE11 3TU, Leics, England

来源：

POLYMER ENGINEERING AND SCIENCE | 2013年 / 53卷 / 09期

基金：

英国工程与自然科学研究理事会;

关键词：

COMPOSITE POWDER; NANOCOMPOSITES; STRENGTH; DESIGN;

D O I：

10.1002/pen.23459

中图分类号：

TQ [化学工业];

学科分类号：

081705 [工业催化];

摘要：

Well-dispersed nanocomposite powder with spherical morphology and suitable particle size for processing by laser sintering was successfully produced by coating polyamide 12 (PA12) powder particles with carbon nanotubes (CNTs). Flexural, impact, and tensile test specimens produced by laser sintering the PA12-CNT powder showed no distortion and good definition. The density of the PA12-CNT laser-sintered parts was higher than that of neat PA12, which the authors propose is mainly due to higher laser absorption by the CNT particles. Compared to the laser-sintered PA12 parts, PA12-CNT parts showed enhanced flexural, impact, and tensile properties without sacrificing elongation at break. This enhancement may be attributed to the good dispersion of the CNT in the PA12 matrix and denser laser-sintered parts. Considering the low weight percentage of CNT used (0.1 wt%), it would seem that the method used in this work is a cost efficient and effective way to produce polymer nanocomposite powders for laser sintering, while maintaining the optimum powder morphology for the laser sintering process and enhancing the mechanical properties of the laser-sintered part. POLYM. ENG. SCI., 2013. (c) 2013 Society of Plastics Engineers

引用

页码：1937 / 1946

页数：10

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