The Impact Resistance, Flammability, and Hardness of Polypropylene/Unidirectional Sumberejo Kenaf Fiber Composites

Seminar Nasional Material 2018

Maulana, M.I.^1 ; Juwono, A.L.^1

Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, West-Java

16424, Indonesia^1

关键词: Energy of impact;    Fiber breakages;    Fiber composite;    Hardness values;    Impact energy;    Indonesia;    Oxygen barriers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/599/1/012012/pdf
DOI  :  10.1088/1757-899X/599/1/012012

来源: IOP

【 摘 要 】

The use of natural fibers to substitute synthetic fibers on composites has been an interest to be developed. Kenaf is a plant that abundant in Indonesia because it's adaptive and its fiber has good strength. The purpose of this study was to determine the value of impact resistance, flammability, and hardness of polypropylene / unidirectional Sumberejo kenaf fiber composite boards in accordance with Standar Nasional Indonesia (SNI). Composites were fabricated by the variation of fiber, which were 30 wt%, 40 wt%, and 50 wt%. Pure polypropylene samples were also fabricated for comparison. The fabrication used a compression molding method. The best results were obtained from polypropylene / 50 wt% kenaf fiber composites with impact energy, flammability, and hardness values were (47.54 + 10.7) J / cm2, (7.1?5.1) mm / minute, and (66 + 0.8) HD respectively. Optical microscope observation on the impacted surface was a destruction of the matrix-fiber bonding and fiber breakage, in which showed the energy of impact was absorbed by kenaf fiber. The observation on the burned surface was burnt kenaf fibers and rest of PP that bonding with kenaf fiber, this indicated the kenaf fiber acted as an oxygen barrier.