Pengaruh Variasi Fraksi Volume, Temperatur Curing Dan Post-Curing Terhadap Karakteristik Bending Komposit Polyester-Hollow Glass Microspheres IM30K

Svenska, Scania Mariella (2016) Pengaruh Variasi Fraksi Volume, Temperatur Curing Dan Post-Curing Terhadap Karakteristik Bending Komposit Polyester-Hollow Glass Microspheres IM30K. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dengan semakin berkembanganya teknologi di bidang material, mendorong material komposit untuk dapat digunakan dalam aplikasi produk baik di dalam bidang otomotif dan dirgantara, maupun dalam bidang militer. Keunggulan dari material komposit ini adalah strength to weight ratio yang tinggi, kekuatan, ketangguhan, dan ketahanan terhadap korosi yang tinggi dibandingkan dengan logam. Salah satu pengembangan material komposit adalah dengan penambahan hollow glass microspheres (HGM) sebagai reinforcement karena keunggulan yang dimiliki yaitu massa yang ringan, konduktivitas thermal rendah, dan ketahanan terhadap tegangan kompresi yang tinggi. Penelitian ini dilakukan dengan mencampurkan resin polyester dengan HGM. Spesimen uji bending diproduksi sesuai dimensi ASTM D 790 dengan variasi fraksi volume HGM 10% sampai 17% dengan penambahan 1%. Spesimen menerima tiga perlakuan yang berbeda yaitu, spesimen kode A dicuring pada temperatur kamar (±27°C) selama 24 jam, spesimen kode B dicuring pada temperatur kamar lalu postcuring pada temperatur 90°C selama 5 jam, dan spesimen kode C dicuring pada temperatur 90°C selama 5 jam. Setelah prosesii produksi, dilakukan pengujian bending untuk mengetahui perubahan sifat mekanik yang terjadi pada komposit. Hasil yang didapatkan adalah tegangan bending komposit maksimum terdapat pada fraksi volume HGM sebesar 10% dengan nilai 126.61 Mpa pada temperatur curing 27°C. Komposit dengan perlakuan curing 27°C selama 24 jam memiliki nilai tegangan bending yang paling maksimal. Hal ini dikarenakan komposit yang dicuring pada temperatur ruang memiliki ikatan crosslink yang lebih banyak dan ikatan interface yang lebih kuat sehingga nilai tegangan bending pada komposit akan meningkat ========================================================================================================== The advancement of technology in the field of materials makes composite material to be applied in the application on aspects such as in automotive, aerospace as well as in military. The advantages of composite material is its high strength to weight ratio, its capability and its firmness and high tolerance to corrosion compared to metal. One of the composite material developments is the addition of Hollow Glass Microsphere (HGM) as the reinforcement due to its advantages such as airy mass, low thermal conductivity and resistance to a high compressive stresses. This research is conducted by mixing the polyester resin with HGM. The bending test specimen dimensions are manufactured according to ASTM D 790 with fraction volume variation on 10% to 17% with 1% addition. Specimens will receive 3 different treatments as follows. Specimen A will be in curing in room temperature (±27°C) in 24 hours. Specimen B will be in curing in room temperature afterwards in post-curing in 90°C temperature. Specimen C will be in curing for 90°C temperature for 5 hours. After the production process, bending test will be conducted to determine the changes of mechanical properties within the composite.iv The result obtained is on how the maximum composite stress bending exists in HGM with volume of 10% with 126.61 Mpa on curing temperature of 27°C. The composite with curing treatment of 27°C in 24 hours has the maximum stress bending due to the curing process of its composite in the room temperature has more crosslink binding and stronger interface binding that makes the composite bending stress increasing

Item Type: Thesis (Undergraduate)
Additional Information: RSM 620.118 Sve p
Uncontrolled Keywords: bending, curing, hollow glass microspheres, komposit, polyester, post-curing.
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL240.5 Composite materials
Divisions: Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 18 Mar 2020 03:08
Last Modified: 18 Mar 2020 03:08
URI: https://repository.its.ac.id/id/eprint/75496

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