Figure 2. Photos of rubber sheets of silica-filled CR compounds.
Figure 1. TG curves of silicas used.
Figure 3. SEM images of CR-MS1 compounds with different silica contents: (A) 20 phr, (B) 40 phr, (C) 60 phr, and (D) 80 phr. The images were obtained from the compounds after sputtering with plasma to remove soft rubber.
Figure 4. SEM images of CR-GR compounds with different silica contents: (A) 20 phr, (B) 40 phr, and (C) 60 phr. The images were obtained from the compounds after sputtering with plasma to remove soft rubber.
Figure 5. TG (A) and DTA (B) curves of CR compounds reinforced with different silicas of 60 phr recorded in nitrogen.
Figure 6. TG curves of CR-GR (A) and CR-MS3 (B) and DTA curves of CR-GR (C) and CR-MS3 (D) compounds recorded in air.
Figure 7. Rheocurves of CR-GR (A), CR-MS2 (B), and CR-MS3 (C) compounds with different silica contents.
Figure 8. Variations of (A) τmin and (B) Δτ of silica-filled CR compounds with their silica content.
Figure 9. Variations of (A) Mooney viscosity and (B) Payne effect of silica-filled CR compounds with their silica content.
Figure 10. Variations of (A) tear and (B) tensile strengths of silica-filled CR compounds with their silica content.
Figure 11. Variations of (A) M-200% and (B) E.B. of silica-filled CR compounds with their silica content.
Figure 12. Variations of (A) HBU and (B) compression set of silica-filled CR compounds with their silica content.
Figure 13. Changes in moduli of the CR compounds reinforced with 60 phr silica after (A) thermal, (B) oil, and (C) ozone aging.
Figure 14. Changes in tear and tensile strengths of CR compounds reinforced with 60 phr silica after (A) thermal, (B) oil, and (C) ozone aging.
Table 1. Chemical Compositions of Silica-Filled CR Compounds Prepared
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