Inovasi Komposit Binderless Berbasis Ampas Tebu Sebagai Kandidat Material Isolator Termal Ramah Lingkungan
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Salah satu teknik mereduksi panas dapat dilakukan dengan penggunaan material isolator. Penelitian ini bertujuan untuk mengembangkan komposit binderless ampas tebu sebagai kandidat material isolator. Komposi binderless diproduksi menggunakan peralatan hot-press. Pengujian konduktivitas termal dan lentur dilakukan. Ampas tebu yang telah kering di potong menggunakan gunting, kemudian ampas tebu direndam dalam larutan 5% NaOH selama 3 jam, lalu dibilas menggunakan air hingga bersih. Ampas tebu yang sudah kering digiling menggunakan diskmill dan disortir dengan menggunakan ayakan mesh 20 dan 40. Proses pembentukan komposit binderless menggunakan hotpress pada temperatur 1900C dengan dua tahapan penekanan. Untuk lama penekanan 15 menit; penekanan tahapan pertama sebesar 15 MPa selama 10 menit dan tahapan kedua 10 MPa selama 5 menit. Karakterisasi komposit binderless berupa pengujian bending dan konduktivitas termal. Dari hasil penelitian telah berhasil dikembangkan material isolator dari komposit binderless ampas tebu. Komposit binderless ampas tebu dengan ukuran partikel mesh 20 memiliki kekuatan bending lebih rendah (5,28 MPa) dibandingkan dan komposit dengan mesh 40 (8,45 MPa). Kerapatan dan kekuatan memiliki trend meningkat dengan berkurangnya ukuran partikel. Sebaliknya komposit binderless ampas tebu memiliki koefesien konduktivitas termal yang rendah pada ukuran partikel yang lebih besar. Komposit binderless ampas tebu memiliki peluang yang potensial menggantikan serat sintetis sebagai material isolator.
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