Wirawan, Willy Artha (2018) Analisis Penambahan Coupling Agent Terhadap Kekuatan Tarik Pada Natural Fiber Composite. Magister thesis, Universitas Brawijaya.
Abstract
Komposit natural fiber merupakan salah satu inovasi dalam pengembangan material terbarukan yang dinilai lebih ramah lingkungan. Komposit berbasis natural fiber dikembangkan menggunakan serat kulit pohon waru (Hibiscus tiliaceus) yang dipadukan dengan beragai jenis matrik polymer sehingga mempunyai kekuatan yang baik. Sebelum dipadukan dengan matrik polymer serat kulit waru di berikan perlakuan secara kimiawi dan ditambahkan silane coupling agen guna memperbaiki kualitas ikatan antara serat alam dan matrik polymer sehingga mendapatkan kekuatan mekanik komposit yang tinggi dari pada komposit sebelumnya. Pada penelitian ini komposit berbahan serat kulit waru dilakukan dengan berbagai variasi jenis matrik, variasi penambahan silane coupling agent dan variasi sudut orientasi serat. Komposit dibuat menggunakan metode vacuum infusion dengan tekanan sampai dengan -27 atm. Spesimen uji tarik dibuat berdasarkan ASTM D638-03 type I. Komposit berbahan serat kulit waru dilakukan beberapa pengujian antara lain uji serat tunggal, uji matrik tanpa serat, uji komposisi kimia kandungan serat, uji tarik komposit dan uji mikrostruktur interface serat menggunakan foto SEM (Scanning electron microscopy). Pada penelitian ini dilakukan beberapa analisis antara lain analisis kekuatan tarik komposit, analisis fase patahan komposit berdasarkan diagram tegangan regangan dan analisis fracture area komposit menggunakan software imageJ. Dari hasil penelitian dapat diketahui 1) Penambahan silane coupling agent dapat meningkatkan kekuatan mekanik komposit menjadi lebih baik. Penambahan yang efektif untuk komposit serat kulit waru dapat digunakan 0.75% konsentrasi silane coupling agent pada matrik polyester. 3) sudut orientasi serat mempengaruhi fracture area pada komposit. Untuk memperoleh fracture area yang baik dapat diperoleh dengan penambahan silane coupling agent dan orientasi anyaman serat 0°/90°.
English Abstract
Natural Fiber Composite is one of the innovations in the development of renewable material that is considered more environmentally friendly. Fiber-based natural composite was developed using bast fibers hibiscus (Hibiscus tiliaceus) combined with beragai type of matrix polymer that has a good strength. Before integrated with matrix polymer hibiscus bark, this fiberis was given a chemical treatment and was added silane coupling agent in order to improve the quality of the bond between the natural fiber and matrix polymer composites to obtain high mechanical strength. In this study, hibiscus bark fiber composite was made with a variety of types of matrices, the addition of variations silane coupling agent and variations in fiber orientation angle. Composites were made using vacuum infusion method with a pressure up to -27 atm. Tensile test specimens were made based on ASTM D638-03 type I. Hibiscus bark fiber composites was given some testing include single fiber test, test matrix without fibers, fiber chemical composition test, tensile test and test composite microstructure interface fiber using SEM (Scanning electron microscopy). In this research, some of analysis was used include analysis of the tensile strength of the composite, fracture phase analysis based on stress-strain diagram and analysis of fracture area a composite using ImageJ software. The results of this research were 1) Addition of silane coupling agent can improve the mechanical strength of the composite better. The most effective additions on hibiscus bark fiber composites was 0.75% concentration of silane coupling agent in the matrix polyester 3) the angle of fiber orientation affect fracture area of in the composites. To obtain a good fracture area can be obtained by the addition of silane coupling agent and a woven fiber orientation of 0°/90°.
| Item Type: | Thesis (Magister) |
|---|---|
| Identification Number: | TES/621.825/WIR/a/2018/041802266 |
| Uncontrolled Keywords: | COUPLINGS, COMPOSITE MATERIALS, HIBISCUS |
| Subjects: | 600 Technology (Applied sciences) > 621 Applied physics > 621.8 Machine engineering > 621.82 Machine parts > 621.825 Clutches, couplings, universal joints |
| Divisions: | S2/S3 > Magister Teknik Mesin, Fakultas Teknik |
| Depositing User: | Nur Cholis |
| Date Deposited: | 03 Jan 2019 06:39 |
| Last Modified: | 21 Oct 2021 02:48 |
| URI: | http://repository.ub.ac.id/id/eprint/162458 |
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