A novel route for injection moulding of long carbon fibre-reinforced LLDPE

Cs Varga, L. Bartha

Research output: Contribution to journalArticle

Abstract

The scope of our work has been the development of a new type of coupling agent by which processing of long carbon fibre-reinforced thermoplastic composites by conventional injection moulding can be possible. The experimental additive was expected to hinder fibre breakage and to simultaneously improve the mechanical properties of the composites. Resistance of LLDPE reinforced with 1-10 wt% long carbon fibres against tensile, flexure and impact stresses has been investigated. Tensile strength of carbon fibre/LLDPE composites has increased by 10-30%; flexure strength has gained 15-90% related to the neat polymer depending on the fibre concentration. The effect of a blowing agent on the mechanical properties has also been investigated. At least 20% higher yield strength has been measured for the foamed sample with 5% carbon fibre related to the nonfoamed one with the same fibre content. The higher the fibre content was, the higher the improvements in the mechanical properties became. Fibre-matrix interaction has been studied on scanning electron microscopy graphs where a well-connected polymer layer has been observed to the fibre surface.

Original languageEnglish
Pages (from-to)1902-1910
Number of pages9
JournalJournal of Reinforced Plastics and Composites
Volume33
Issue number20
DOIs
Publication statusPublished - Oct 1 2014

Fingerprint

Linear low density polyethylenes
Injection molding
Carbon fibers
Fibers
Mechanical properties
Polymers
Composite materials
Blowing agents
Coupling agents
Thermoplastics
Yield stress
carbon fiber
Tensile strength
Scanning electron microscopy
Processing

Keywords

  • carbon fibre
  • Coupling agent
  • LLDPE
  • polyolefin

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Polymers and Plastics
  • Materials Chemistry
  • Ceramics and Composites

Cite this

A novel route for injection moulding of long carbon fibre-reinforced LLDPE. / Varga, Cs; Bartha, L.

In: Journal of Reinforced Plastics and Composites, Vol. 33, No. 20, 01.10.2014, p. 1902-1910.

Research output: Contribution to journalArticle

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