Title: Effect of glass fibre percentage on the tensile strength of PBT/glass fibre blends

Authors: Pham Thi Hong Nga; Tran Hoang Phuc; Nguyen Dinh Quang; Luong Quoc Khanh; Pham Quan Anh; Nguyen Vinh Tien; Nguyen Van Thuc; Ho Thi My Nu; Nguyen Thanh Tan

Addresses: Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, No. 1 Vo Van Ngan St., Thu Duc, Ho Chi Minh City, 721400, Vietnam ' Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, No. 1 Vo Van Ngan St., Thu Duc, Ho Chi Minh City, 721400, Vietnam ' Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, No. 1 Vo Van Ngan St., Thu Duc, Ho Chi Minh City, 721400, Vietnam ' Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, No. 1 Vo Van Ngan St., Thu Duc, Ho Chi Minh City, 721400, Vietnam ' Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, No. 1 Vo Van Ngan St., Thu Duc, Ho Chi Minh City, 721400, Vietnam ' Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, No. 1 Vo Van Ngan St., Thu Duc, Ho Chi Minh City, 721400, Vietnam ' Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, No. 1 Vo Van Ngan St., Thu Duc, Ho Chi Minh City, 721400, Vietnam ' Faculty of Mechanical Technology, Ho Chi Minh City University of Industry and Trade, 140 Le Trong Tan Str., Tay Thanh, Tan Phu, Ho Chi Minh City, 760310, Vietnam ' Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education, No. 1 Vo Van Ngan St., Thu Duc, Ho Chi Minh City, 721400, Vietnam

Abstract: This research paper is presented to evaluate the tensile strength of polybutylene terephthalate (PBT)/glass fibre (GF) blends with GF content ranging from 5% to 25%. The tensile strength of the sample is determined according to ASTM D638. The results showed that the average tensile strength of PBT/GF at 95/5, 90/10, 85/15, 80/20, and 75/25 ratios was 41.30, 56.09, 59.96, and 64.41 MPa. It shows that the PBT/GF mixture has an increase in tensile strength proportional to the increase in GF content. Compared to neat PBT, the tensile modulus of PBT/GF blends is relatively improved with increased GF loads. The increased density of thick GF placed throughout PBT through scanning electron microscopy (SEM) imagery indicates the possibility of describing compatibility between PBT and GF in blends. This study is intended as a reference for developing methods to recycle materials with desired mechanical properties.

Keywords: PBT; polybutylene terephthalate; glass fibre; PBT/GF blend; tensile strength; microstructure.

DOI: 10.1504/IJNT.2024.146466

International Journal of Nanotechnology, 2024 Vol.21 No.7/8/9/10/11/12, pp.584 - 594

Published online: 30 May 2025 *

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