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RSS 1 : Grade 1 Ribbed Smoked Sheets RSS 1 refers to Ribbed Smoked Sheets, produced from natural rubber latex as ribbed sheets, by coagulation with acids and sheeting, properly air dried and smoked, and visually graded. Ribbed smoked sheets (RSS) are graded based on visual assessment of quality. The International Rubber Quality and PackingConference (IRQPC) have specified the grade descriptions, to establish acceptable grades for commercial usage.
Property | Index | Standard |
1. Dirt (retained on 45µ aperture (%wt) | 0.029 | TCVN 6089-2004 (ISO 249: 1995) |
2. Ash (%Wt) | 0.240 | TCVN 6087:2010 (ISO 247: 1990) |
3. Volatile matter (% Wt) | 0.44 | TCVN 6088: 2010 (ISO 248: 1991) |
4. Nitrogen (% Wt) | 0.45 | TCVN 6091:2004 (ISO 1656: 1996) |
5. Initial wallace plasticity (Po) | 49.1 | TCVN 8493:2010 |
6. PRI (P30/Po)x100 | 85.1 | TCVN 8494:2010 |
7. Rheometric cure (160oC, 1o arc 100 rpm ACS 1) |
| TCVN 6094:2010 |
-Torque Min (dNm) | 6.12 |
|
-Torque Max(dNm) | 22.42 |
|
8. Tensile stress strain properties |
| TCVN 4509:2006 |
Tensile strength at break (Mpa) | 17.84 |
|
Stress at module 100 (Mpa) | 0.67 |
|
Stress at module 300 (Mpa) | 1.38 |
|
9. Elongation at break | 800 |
|

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