Pengaruh Komposisi Serat Kaca Dan Serbuk CaCO3 Terhadap Karakteristik Material Komposit Hybrid Bermatriks Poliester Tak Jenuh

Waluyo, Marhadi Budi (2019) Pengaruh Komposisi Serat Kaca Dan Serbuk CaCO3 Terhadap Karakteristik Material Komposit Hybrid Bermatriks Poliester Tak Jenuh. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Komposit poliester yang diperkuat serat kaca sebagai bahan pengganti metal telah memainkan peran dominan untuk waktu yang lama dalam berbagai aplikasi. Hal ini dikarenakan kekuatan, kekakuan dan modulus memiliki spesifikasi yang tinggi. Selain serat penambahan partikel pada komposit juga banyak dilakukan untuk meningkatkan sifat mekanik polimer komposit. Dalam penelitian ini serbuk CaCO3 ditambahkan ke dalam komposit berpenguat serat kaca bertujuan untuk meningkatkan sifat mekanik polimer komposit. serbuk CaCO3 diperoleh dari limbah industri, dengan tujuan pemanfaatan kembali serbuk limbah industri. Penambahan serbuk pada komposit 80 persen berat poliester tak jenuh dan 20 persen berat serat kaca dilakukan sebanyak 2,5 hingga 20 phr. Penambahan serbuk juga dilakukan pada komposit hybrid poliester tak jenuh/serat kaca/CaCO3 dengan komposisi serbuk 2,5 hingga 20%berat. Komposit dibuat dengan proses hand lay-up. Pencampuran serbuk CaCO3 bersama resin poliester tak jenuh dilakukan pada cetakan plastik lalu proses pengadukan menggunakan mixer. Kemudian campuran dibentuk dengan cetakan yang dimensinya sudah disesuaikan dengan standar pengujian. Hasil pengujian mekanik menunjukan penambahan serbuk CaCO¬3 dapat meningkatkan kekuatan Tarik, kekuatan lentur dan kekerasan material komposit hybrid PTJ/Serat Kaca/CaCO3. Namun kekuatan impak menurun. Hasil penelitian menunjukan komposit hybrid 5 phr CaCO3 memiliki kekuatan Tarik dan lentur paling tinggi. Nilai kekerasan tertinggi berada pada komposit hybrid 5%wt CaCO3. Permukaan fraktur dan adhesi komposit diamati dengan pemindaian mikroskop elektron (SEM). Hasil pemindaian SEM menunjukkan bahwa adesi antara serat dan matrik pada komposit sangat kuat. Gambar diambil tepat pada lokasi patahan tampak bahwa serat kaca membawa bagian resin poliester yang masih tercengkeram kuat pada serat kaca
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Glass fiber reinforced polyester composites as metal replacement materials have played a dominant role for a long time in various applications. This is due to strength, stiffness and modulus having high specifications. In addition to fiber, the addition of particles to the composite is also widely done to improve the mechanical properties of composite polymers. In this study CaCO3 powder added to glass fiber reinforced composites aims to improve the mechanical properties of composite polymers. CaCO3 powder is obtained from industrial waste, with the aim of reusing industrial waste powder. The addition of powder to the composite 80 percent by weight of unsaturated polyester and 20 percent by weight of glass fiber is carried out as much as 2.5 to 20 phr. The addition of powder was also carried out on hybrid unsaturated polyester/ glass fiber/ CaCO3 composites with a powder composition of 2.5 to 20% by weight. Composites are made by the hand lay-up process. Mixing CaCO3 powder with unsaturated polyester resin was carried out in plastic mold and then the stirring process using a mixer. Then the mixture is formed with molds whose dimensions have been adjusted to the testing standards. The mechanical test results show the addition of CaCO3 powder can increase tensile strength, flexural strength and hardness of UP/Glass Fiber/CaCO3 hybrid composite material. But the impact strength decreases. The results showed that the hybrid 5 phr CaCO3 composite had the highest tensile and flexural strength. The highest hardness value is in the 5 % wt CaCO3 hybrid composite. The surface of the fracture and composite adhesion were observed by scanning electron microscopy (SEM). The scanning results of SEM showed that the adhesion between fiber and matrix in the composite was very strong. The picture taken right at the fault location shows that the glass fiber carries part of the polyester resin which is still firmly gripped on the glass fiber.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	CaCO3, Glass Fiber, Hand Lay-up, Hybrid, Unsaturated Polyester
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL240.5 Composite materials
Divisions:	Faculty of Industrial Technology > Material & Metallurgical Engineering > 27101-(S2) Master Thesis
Depositing User:	Waluyo Marhadi Budi
Date Deposited:	22 Jul 2026 04:10
Last Modified:	22 Jul 2026 04:10
URI:	http://repository.its.ac.id/id/eprint/69054

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