KARET ALAM HIDROGENASI SEBAGAI MATRIKS POLIMER ALTERNATIF PADA KOMPOSIT ELASTOMER BANTALAN JEMBATAN
DOI:
https://doi.org/10.22302/ppk.jpk.v41i2.872Keywords:
hidrogenasi, karet alam, karet bantalan jembatan, matriks polimerAbstract
Karet alam hidrogenasi yang terbuat melalui modifikasi kimiawi lateks karet alam secara transfer hidrogenasi katalitik berpotensi digunakan sebagai matriks polimer alternatif pada karet bantalan jembatan. Penelitian ini dilakukan untuk mengkaji peluang pemanfaatan karet alam hidrogenasi pada pembuatan karet bantalan jembatan. Karet alam hidrogenasi yang digunakan pada penelitian ini disintesis pada variasi konsentrasi hidrasin hidrat (40 dan 42,5 bsk) terhadap hidrogen peroksida (30 dan 35 bsk) suhu 40oC dan 50oC. Eksperimen diawali dengan persiapan kompon karet menggunakan mesin giling terbuka dilanjutkan dengan pembuatan vulkanisat karet pada mesin cetak hidraulik. Vulkanisat karet dikarakterisasi sifat fisik dan mekanik mengikuti parameter yang tercantum dalam SNI 3967:2013. Karet SIR 20 digunakan sebagai pembanding. Hasil pengujian menunjukkan bahwa karet alam hidrogenasi yang diolah dari 40 bsk hidrasin hidrat dan 35 bsk hidrogen peroksida pada suhu 40oC ditetapkan sebagai matriks polimer alternatif yang paling menjanjikan untuk produk karet bantalan jembatan. Vulkanisat karet bantalan jembatan dari karet alam hidrogenasi tersebut memiliki sifat fisik dan mekanik yang sesuai dengan persyaratan SNI 3967:2013 dan persentasi rentensi yang lebih tinggi daripada vulkanisat karet bantalan jembatan dari SIR 20.
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