Preprint Article Version 1 This version is not peer-reviewed

Effect of Carbon Nanotubes on Mechanical Properties of Wood Plastic Composites by Selective Laser Sintering

Version 1 : Received: 1 November 2017 / Approved: 7 November 2017 / Online: 7 November 2017 (02:43:15 CET)

A peer-reviewed article of this Preprint also exists.

Zhang, Y.; Fang, J.; Li, J.; Guo, Y.; Wang, Q. The Effect of Carbon Nanotubes on the Mechanical Properties of Wood Plastic Composites by Selective Laser Sintering. Polymers 2017, 9, 728. Zhang, Y.; Fang, J.; Li, J.; Guo, Y.; Wang, Q. The Effect of Carbon Nanotubes on the Mechanical Properties of Wood Plastic Composites by Selective Laser Sintering. Polymers 2017, 9, 728.

Journal reference: Polymers 2017, 9, 728
DOI: 10.3390/polym9120728

Abstract

A new type of low cost, environmentally friendly wood-plastic composites (WPC) containing carbon nanotubes(CNT)of low content 0%, 0.05wt%, 0.1wt% and 0.15wt%, wood fibers of 14wt% and polymer PES of 86wt% was manufactured by the selective laser sintering (SLS) approach of 3D printing. The experimental results showed that the incorporating of CNTs could obviously increase the mechanical properties of the wood/PES composites material. The tensile strength, bending strength and elasticity modulus were 76.3%, 227.9% and 128.7% higher with 0.1wt% CNTs than without CNTs. And the mechanical properties of specimens firstly increased and then decreased with the increasing contents of CNTs. The SEM results of the specimens’ fracture morphology indicated that the preferable bonding interfaces between wood flour grains and PES grains were achieved by adding CNTs to the composites. There are two reasons to explain why the composites possessed the superior mechanical properties: CNTs could facilitate the laser sintering process of wood plastic composites due to their thermal conductivities; also, CNTs could directly reinforce the WPC composites as reinforcement.

Subject Areas

selective laser sintering (SLS); wood-plastic composites (WPC); carbon nanotube (CNT); mechanical properties; binding mechanism

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