Design, manufacture, and performance testing of extrusion–pultrusion machine for fiber-reinforced thermoplastic pellet production

Budiyantoro, Cahyo and Rochardjo, Heru S. B. and Nugroho, Gesang (2021) Design, manufacture, and performance testing of extrusion–pultrusion machine for fiber-reinforced thermoplastic pellet production. Machines, 9 (2). 1 – 17. ISSN 20751702

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Abstract

This study aimed to develop an extrusion and pultrusion system for producing carbon fiber-filled thermoplastic pellets. The extruder delivers a plastic melt to an impregnation die in sufficient volume and is pulled out along with the fibers. The fibers pass in a sideways stretched condition through spreader pins attached in the melt pool, which can then be wetted optimally. The wetting effect was also improved by immersing fiber in a coupling agent solution at an elevated temperature before feeding to the extruder die. For machine performance testing, polypropylene was used as a matrix resin with the following parameters: a screw speed of 5 rpm, a die temperature of 210◦ C, and a pulling speed of 56 mm/s. The pull-out test was conducted to assess the interfacial shear strength (IFSS) between fibers and matrix. Scanning electron microscopy (SEM) was applied to characterize the quality of fiber impregnation. SEM characterized a good bonding performance between carbon fiber and the matrix. The average IFSS of the results indicated a good resistance of fiber–matrix bonding against a pulling force. It proved that the combination of the extrusion–pultrusion system can produce high-quality filaments as a raw material of composite pellets. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Item Type: Article
Additional Information: Cited by: 8; All Open Access, Gold Open Access
Uncontrolled Keywords: composite pellet; extrusion; impregnation die; pultrusion; spreader pin
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering > Mechanical and Industrial Engineering Department
Depositing User: Sri JUNANDI
Date Deposited: 28 Oct 2024 02:15
Last Modified: 28 Oct 2024 02:15
URI: https://ir.lib.ugm.ac.id/id/eprint/8551

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