Production of wood-plastic composite from non-metallic powders recovered from printed circuit board (PCB) waste

Name: Ampai Chanachai

Organization : King Mongkut's University of Technology Thonburi. Faculty of Engineering

Email : ampai.cha@kmutt.ac.th

Name: Preechaya Sanguansai

Organization : King Mongkut's University of Technology Thonburi. Faculty of Engineering

Name: Watcharapon Wimonratpanya

Organization : King Mongkut's University of Technology Thonburi. Faculty of Engineering

Name: Mewika Norachai

Organization : King Mongkut's University of Technology Thonburi. Faculty of Engineering

Name: Waraporn Kidkarn

Organization : King Mongkut's University of Technology Thonburi. Faculty of Engineering

keyword: Nonmetallic powders

LCSH: Polymeric composites

; Printed circuit board

; TIS.178-2549

Abstract: This research studied the recovery of nonmetallic powders (NMPs) from waste printed circuit board (PCB) to produce a wood plastic composite. The NMPs was blended with polymers including recycled high-density polyethylene (rHDPE), wood flour, ethylene vinyl acetate (EVA), and linear low-density polyethylene grafted with maleic anhydride (LLDPE-g-MAH) as a compatibilizer. NMPs was prepared by grinding PCB to 0.106 mm size. Copper in PCB powders was extracted by ammoniacal alkaline solution in the ratio of PCB powder to solvent at 1 g:10 ml. Then, all compositions were blended in various ratios through a twin-screw extruder to produce the wood-plastic composite and molded by hot compressor. The mechanical properties such as tensile strength, % elongation at break, and flexural strength of polymer composites were tested. Morphological characteristics were studied by scanning electron microscope (SEM). All polymer composites, which contained wood flour, had mechanical properties that passed the Thai industry standard of composite wood (TIS.178–2549), i.e., flexural strength > 34 Pa and elastic modulus > 4,500 Pa. Thus, all composites could be produced as composite wood. It was found from the SEM results that the composite that had the ratio of rHDPE:NMPs:wood flour equal to 50:30:20 showed well-dispersed NMPs. It also had the highest tensile strength, which was 20.34 MPa, and flexural strength and elastic modulus were 16.68 MPa and 2.54 MPa, respectively. This research enables the utilization of NMPs from electronic waste (PCB), which helps create sustainability and protect the environment.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2025

Modified: 2025-07-30

Issued: 2025-07-30

บทความ/Article

application/pdf

BibliograpyCitation : In Thai Institute of Chemical Engineering and Applied Chemistry and Khon Kaen University. Faculty of Engineering. The 34th Thai Institute of Chemical Engineering and Applied Chemistry International Conference (TIChE 2025) (TIChE 2025 TIChE-PE-19). Bangkok : Thai Institute of Chemical Engineering and Applied Chemistry, 2025

eng

©copyrights King Mongkut's University of Technology North Bangkok

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	TIChE 2025 TIChE-PE-19.pdf	1.81 MB

ใช้เวลา

0.038218 วินาที