Pengaruh Perbandingan Bahan Baku Cup Lump dengan Slab untuk Mendapatkan Nilai Pri (Plasticity Retention Index) terhadap Mutu Crumb Rubber Sir 10 di PT. Perkebunan Nusantara III)

Abstract

Experiments have been conducted to determine the effect of raw material to the value of PRI (Plasticity Retention Index) on the quality Crumb Rubber. Where compared with mixing various raw materials. Namely, Cup Lump : Slab “ 2:1 ; 4:1 ; 5:1 ; 3:2 and Slab : Cup Lump “2:1 ; 3:1 ;4:1 ;5:1 ; 2:3. The results obtained from testing the PRI (plasticity Retention Index) by comparison of different raw materials scored 61-88%, where the results obtained from each of these comparisons have met quality standard SIR.