IRAQI JOURNAL OF APPLIED PHYSICS Vol. 22, No. 3, July-September 2026, pp. 358-372 Sustainable UPE Composites Saad M. Hashim Waleed B. Salih * Reinforced with Recycled HDPE: Correlation of Mechanical, Thermal, and Acoustic Performance Department of Physics,...
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IRAQI JOURNAL OF APPLIED PHYSICS Vol. 22, No. 3, July-September 2026, pp. 358-372 Sustainable UPE Composites Saad M. Hashim Waleed B. Salih * Reinforced with Recycled HDPE: Correlation of Mechanical, Thermal, and Acoustic Performance Department of Physics, This paper produces environmentally friendly unsaturated polyester resin (UPE) composites College of Education for that use finely ground high-density polyethylene (HDPE) particles (approximately 53 μm, 0- Pure Science, 10 wt.%). Mechanical, thermal and acoustic properties were assessed systematically in University of Anbar, order to identify structure property relationships. Incorporation of HDPE enhanced Ramadi, 31001, IRAQ compressive strength (56.6→94.4 MPa), impact resistance (+70%), surface hardness * Corresponding author email: (75.4→80.5 Shore D), thermal conductivity (0.19→0.26 W/m 2.°C), and sound insulation (≈ saa23u3001@uoanbar.edu.iq 20 dB reduction at 10 kHz). On the other hand, flexural strength declined (>80%). FTIR w
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