Properties of hybrid composites using coral reefs waste and coconut fiber

Tarumanagara International Conference on the Applications of Technology and Engineering

工业技术（总论）

Wayan Surata, I.^1 ; Nindhia, Tjokorda Gde Tirta^1 ; Yolanda, W. Edo^1 ; Ryan Trisna, I.G.^1

Department of Mechanical Engineering, Faculty of Engineering Udayana University, Indonesia^1

关键词: Applied research;    Automotive component;    Engineering materials;    Hybrid composites;    Hybridization methods;    Methyl ethyl ketone peroxides;    Natural fiber composites;    Unsaturated polyester;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/508/1/012059/pdf
DOI  :  10.1088/1757-899X/508/1/012059

学科分类：工业工程学

来源: IOP

【 摘 要 】

The use of engineering materials in the construction of cars, boats and other are still dominated by metal materials. However, lately metal material has begun to decrease and replaced with non-metallic materials such as composites. The advantages of composite materials compared to metals are good mechanical properties, corrosion resistance, and lower density. The fibers that are often used as reinforcement are synthetic fibers such as glass fiber, carbon, and graphite. This synthetic fiber has advantages in mechanical properties but the price is expensive and not environmentally friendly. Recently the use of composites tends to change from synthetic fiber composites to natural fiber composites because the composite waste of natural fibers is easily decomposed after unused. The problems that are often found from composite materials is broken caused by brittle nature and low tensile strength. One technique that often used to improve the ability of composite materials is the hybridization method, which is the process of combining two or more fibers in a composite. The aims of this study were to obtain baseline data for further development of applied research, in particular, the mechanical properties of hybrid composites that will be utilized as materials for automotive components. This study used unsaturated polyester as the matrix, methyl ethyl ketone peroxide as a hardener, with the fibers derived from coral reefs and coconut fiber as reinforcement. The composites were produced with press hand lay-up techniques, with the fraction of the Acropora weight in the composite keep constant of 30%, but particulate grain size varied 40, 100, and 200 mesh, while the coconut fiber was designed with weight variations of 5%, 10%, and 15%. The results showed that hybrid composites of Acropora mesh 100 with fiber fraction 15% had the highest tensile strength of 25,35 MPa and flexural strength of about 72,04 MPa.