Effect OF NaOH Treatment on Bending Strength Of The Polyester Composite Reinforce By Sugar Palm Fibers

2nd International Conference on Vocational Education and Electrical Engineering

无线电电子学;教育

Arif Irfai, Mochamad^1 ; Wulandari, Diah^1 ; Sutriyono^2 ; Marsyahyo, Eko^2

Department of Mechanical Engineering, Universitas Negeri Surabaya, Kampus Unesa Ketintang Surabaya, P.O. 60231, East Java, Indonesia^1

Department of Mechanical Engineering, National Institute of Technology, Jalan Sigura-gura Malang P.O. 65145, East Java, Indonesia^2

关键词: Bending properties;    Flexural strain;    Fracture surfaces;    Interface adhesion;    Polyester composites;    Sugar palm fiber;    Universal testing machines;    Visual inspection;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/336/1/012008/pdf
DOI  :  10.1088/1757-899X/336/1/012008

学科分类：发展心理学和教育心理学

来源: IOP

【 摘 要 】

The objective of this research is to investigate the effect of NaOH treatment on bending strength of lamina composite reinforced by sugar palm fiber. To know of mechanism fracture can be done with visual inspection of the fracture surface. The Materials used are random sugar palm fibers that have been in the treatment of NaOH, polyester resin and hardener. Sugar palm fibers after washed and dried then soaked NaOH with a long time soaking 0, 2, 4, 6 and 8 hours. The bending test specimens were produced according to ASTM D 790. All specimens were post cured at 62°C for 4 hours. The Bending test was carried out on a universal testing machine. The SEM analysis has conducted to provide the analysis on interface adhesion between the surfaces of fiber with the matrix. The result shows that polyester composite reinforced by sugar palm fiber has highest bending stress 176.77 N/mm2for 2 hours of a long time soaking NaOH, the highest flexural strain 0.27 mm for 2 hours of a long time soaking NaOH, elongation 24.05% for 2 hours of a long time soaking NaOH and the highest bending modulus 1.267 GPa for 2 hours of a long time soaking NaOH. Based on the results, it can be concluded that the polyester composite reinforced by sugar palm fiber has the optimum bending properties for a long time soaking 2 hours. The fracture surface shows that the polyester composite reinforced by sugar palm fiber pull out that indicate weakens the bond between fiber and matrix.