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ITS » Undergraduate Theses » Teknik Mesin
Posted by fandikaaqsa@its.ac.id at 30/03/2016 13:58:55  •  1115 Views


EFFECT OF VOLUME FRACTION TEMPERATURE CURING AND POST-CURING ON COMPRESSIVE PROPERTIES OF EPOXY - HOLLOW GLASS MICROSPHERES IM30K COMPOSITES

Author :
RITONGA, WIDYANSYAH ( 2109100027 )




ABSTRAK

Dewasa ini penggunaan material komposit sudah sangat berkembang. Komposisi dari komposit juga sudah sangat beragam namun penelitian tentang komposit Epoxy Hollow Glass Microspheres HGM dengan variasi temperatur curing dan post-curing untuk karakteristik tekan masih sangat terbatas. Keunggulan yang dimiliki HGM antara lain memberikan bobot yang ringan konduktivitas termal rendah dan ketahanan terhadap tegangan kompresi yang tinggi. Dari keunggulan komposit tersebut tujuan aplikasi pada penelitian ini dapat digunakan pada bemper atau body kendaraan sehingga memiliki kekuatan tekan yang lebih tinggi berat total kendaraan lebih ringan dan efisiensi bahan bakarnya meningkat. Penelitian dilakukan dengan mencampurkan epoxy resin dan HGM. Spesimen uji tekan diproduksi sesuai dimensi ASTM D-695 dengan variasi fraksi volume HGM 15 hingga 20. Spesimen menerima tiga perlakuan yang berbeda. Spesimen I dicuring pada temperatur kamar 27C ditahan selama 24 jam. Spesimen II di-curing pada temperatur kamar 27C ditahan selama 24 jam lalu post-curing pada temperatur 90C selama 5 jam. Spesimen III di-curing pada temperatur 90C ditahan selama 24 jam. Untuk temperatur curing 90C setelah 24 jam komposit akan tetap dibiarkan dalam oven hingga temperatur oven sama dengan temperatur ruang. Untuk mempelajari perbedaan sifat mekanik yang terjadi dilakukan pengujian tekan. Hasil yang didapatkan adalah kekuatan tekan dan ketangguhan komposit maksimum pada fraksi volume HGM 16 untuk spesimen I sebesar 6719 MPa dan 602x10-3 Jmm3 Spesimen II sebesar 8924 MPa dan 913x10-3 Jmm3 dan spesimen III sebesar 12128 MPa dan 2154x10-3 Jmm3. Diatas fraksi volume HGM tersebut kekuatan tekannya cenderung turun dengan nilai terendah pada fraksi volume HGM 20. Terdapat perbedaan yang cukup besar dari ketiga perlakuan dengan fraksi volume HGM yang sama. Komposit yang di-curing temperatur 90C selama 24 jam memiliki kekuatan tekan yang paling tinggi. Hal ini terjadi karena komposit yang di-curing pada temperatur tinggi memiliki ikatan crosslink lebih banyak sehingga ikatan epoxy dan HGM lebih kuat dan nilai kekuatan tekan pada komposit akan meningkat.


ABSTRACT

In this era the using of composite material has highly developed. The composition of composite has also very varied however the research about Epoxy-Hollow Glass Microspheres HGM composite with varied curing and post-curing temperature for compressive characteristic is very limited. The advantages of HGM are providing light weight low termal conductivity and high comprissive strength. Based on those advantages the application of this research can be implemented for vehicles bumper and body material so that total weight of vehicle is lighter and the fuel of vehicle can be more efficient. The research was conducted by mixing Epoxy resin and HGM. Compression test specimens were produced in accordance with ASTM D695 dimension with varied volume fraction of HGM of 15 until 20. Specimens were given three different treatment. Specimen I had been on curing process at 27C for 24 hours. Specimen had neem on curing process at 27C for 24 hours and then post-curing process at 90C for 5 hours. Specimen III had been on curing process at 90C for 24 hours. At 90C of 24 hours curing process composite would be still in oven until oven temperature is same with room temperature. To know the difference in mechanical characteristic then we should do compressive strength experiment. The results obtained with the addition of HGM the maximum compressive strength and thougness of the composite obtained in the addition of 16 for composites I 6719 MPa and 602x10-3 Jmm3 composite II 8924 Mpa and 913x10-3 Jmm3 and composite III 12128 Mpa and 2154x10-3 Jmm3. On top of the addition of 16 volume fraction of HGM compressive strength tends to decline with the lowest value at 20 volume fraction of HGM. Curing temperature is effect on the compressive strength there is a considerable difference between the results of the composite given curing. On composite given curing temperature of 90C has a compressive strength greater than the composite given curing room temperature. This is because the composite given curing at high temperatures has a crosslink on matrix of composites larger so that the compressive strength of the epoxy - matrix composites with hollow glass microspheres will increase.



Keywordskomposit; hollow glass microspheres; epoxy; curing; post-curing; uji tekan
 
Subject:  Permesinan
Contributor
  1. Wahyu Wijanarko, ST., MSc.
Date Create: 30/03/2016
Type: Text
Format: PDF
Language: Indonesian
Identifier: ITS-Undergraduate-21001150008616
Collection ID: 21001150008616
Call Number: RSM 620.118 Rit p


Source
Undergraduate Theses of Machine Engineering, RSM 620.118 Rit p, 2014

Coverage
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Copyright @2016 by ITS Library. This publication is protected by copyright and per obtained from the ITS Library prior to any prohibited reproduction, storage in a re transmission in any form or by any means, electronic, mechanical, photocopying, reco For information regarding permission(s), write to ITS Library




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  1.  ITS-Undergraduate-40986-2109100027-Abstract_en.pdf - 486 KB
  2.  ITS-Undergraduate-40986-2109100027-Conclusion.pdf - 434 KB




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