Studi Eksperimental Pengaruh Variasi Temperatur Sintering terhadap Sifat Mekanik pada Polyether Ether Ketone (PEEK)

Purnomo, Ibra Deviyana Purnomo (2025) Studi Eksperimental Pengaruh Variasi Temperatur Sintering terhadap Sifat Mekanik pada Polyether Ether Ketone (PEEK). Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5007201046-Undergraduate _Thesis.pdf Restricted to Repository staff only Download (2MB) | Request a copy

Abstract

Polyether Ether Ketone (PEEK) merupakan polimer termoplastik unggulan dengan densitas rendah, tahan suhu tinggi, tahan bahan kimia, memiliki sifat mekanik yang baik, serta biokompatibel. Karena itu, PEEK banyak digunakan di bidang kedokteran, otomotif, dan industri dirgantara. Salah satu metode pembentukan PEEK adalah sintering, dan parameter temperatur sangat memengaruhi sifat mekaniknya, seperti kekuatan tarik dan kekerasan. Dalam penelitian ini, serbuk PEEK dikompaksi menggunakan hydraulic press dengan tekanan 250 kg/cm², lalu disinter pada temperatur 400°C, 415°C, dan 430°C. Setiap spesimen diuji menggunakan uji tarik dan kekerasan Shore D. Hasilnya, kekuatan tarik pada temperatur 400°C tercatat sebesar 186,57 MPa, 189,29 MPa, dan 190,91 MPa; pada 415°C sebesar 227 MPa, 263,56 MPa, dan 272,99 MPa; serta pada 430°C sebesar 156,14 MPa, 156,52 MPa, dan 105,34 MPa. Nilai kekerasan rata-rata masing-masing adalah 82 HD (400°C), 85,33 HD (415°C), dan 71,5 HD (430°C). Perbedaan sifat mekanik ini dipengaruhi oleh tingkat kristalinitas hasil sintering, yang ditunjukkan oleh data XRD secara berurutan yakni: 45,5%, 47,2%, dan 44,9%. Semakin tinggi kristalinitas, sifat mekanik material semakin meningkat pula. Dari pengujian XRD yang didapat menunjukkan bahwa sintering pada temperatur 415°C menghasilkan kristalinitas dan kekuatan tarik, serta nilai kekerasan terbaik. Dengan demikian, temperatur 415°C dapat dianggap sebagai temperatur sintering yang optimal untuk meningkatkan performa PEEK.
======================================================================================================================================
Polyether Ether Ketone (PEEK) is a high-performance thermoplastic polymer characterized by low density, high thermal resistance, chemical stability, excellent mechanical properties, and biocompatibility. Due to these attributes, PEEK is widely utilized in the medical, automotive, and aerospace industries. One of the common processing methods for PEEK is sintering, in which the sintering temperature parameter significantly influences its mechanical properties, such as tensile strength and hardness. In this study, PEEK powder was compacted using a hydraulic press at a pressure of 250 kg/cm² and subsequently sintered at temperatures of 400°C, 415°C, and 430°C. Each specimen was subjected to tensile testing and Shore D hardness measurement. The recorded tensile strength values at 400°C were 186.57 MPa, 189.29 MPa, and 190.91 MPa; at 415°C were 227 MPa, 263.56 MPa, and 272.99 MPa; and at 430°C were 156.14 MPa, 156.52 MPa, and 105.34 MPa. The corresponding average Shore D hardness values were 82 HD (400°C), 85.33 HD (415°C), and 71.5 HD (430°C). These variations in mechanical properties are influenced by the degree of crystallinity resulting from the sintering process, as indicated by XRD data: 45.5%, 47.2%, and 44.9%, respectively. A higher degree of crystallinity correlates with improved mechanical performance. Based on the XRD experimental results, sintering at 415°C yielded the highest crystallinity, tensile strength, and hardness values. Therefore, 415°C can be considered the optimal sintering temperature for enhancing the performance of PEEK.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Polyetheretherketone, Sintering, Uji Tarik, Uji Kekerasan
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA418.16 Materials--Testing. T Technology > TA Engineering (General). Civil engineering (General) > TA418.42 Hardness properties and tests. Hardness--Testing.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Ibra Deviyana Purnomo
Date Deposited:	04 Aug 2025 05:40
Last Modified:	04 Aug 2025 05:40
URI:	http://repository.its.ac.id/id/eprint/126889

Actions (login required)

View Item