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http://dx.doi.org/10.7234/composres.2022.35.2.075

The Influence of Mechanical Properties with the Number of Recycling of Fiber-reinforced Thermoplastic Composites Damaged by Impact  

Bae, Kwak Jin (Department of Fiber System Engineering, Yeungnam University)
Lee, Joon Seok (Department of Fiber System Engineering, Yeungnam University)
Publication Information
Composites Research / v.35, no.2, 2022 , pp. 75-79 More about this Journal
Abstract
In this study, the effect of mechanical and chemical properties of glass fiber reinforced thermoplastic (GFRTPs) according to the number of recycling was confirmed. The composite materials were manufactured through a hot press compression molding process using an E-glass chopped strand mat and a polypropylene film. Four specimens were named according to the number of recycled test repeat: First manufacture, 1st Recycle, 2nd Recycle, and 3rd Recycle. To investigate the mechanical properties of the prepared specimen, tensile test, flexural test, drop-weight impact test, differential scanning calorimetry (DSC), and field emission electron gun-scanning electron microscope (FE-SEM) was performed. As a result, as the number of recycling steps repeat, the degree of crystallization, tensile strength, elastic modulus, and flexural strength were increased, but the impact properties were greatly reduced.
Keywords
Thermoplastic; Drop-weight impact test; Glass fiber; Recycle; Crystallinity;
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