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Testing Item | Value | Test Method | |
Volatile matter(%) | 0.75-0.90 | GB/T6737 | |
Ash content | ≤0.50 | GB/T4498A | |
Organic acid(%) | 4.50~6.75 | GB/T8657A | |
Soap content(%) | ≤0.5 | ||
Combinated Styrene content(%) | 22.5~24.5 | GB/T8658 | |
Raw rubber mooney viscosity ML(1+4)100℃ | 44~55 | GB/T1232.1 | |
Compounded rubber mooney viscosity ML(1+4)100℃≤ | 93 | ||
300% Stretching Stress (145℃)/MPa | 25min | 14.7~19.6 | GB/T8656A |
35min | 20.6±2.5 | ||
50min | 21.5±2.5 | ||
Tensile strength (145℃, 35min)/MPa | ≥24.5 | ||
Elongationg at break (145℃, 35min)/% | ≥330 | ||
Heat Distortion Temperature,@0.45MPa(66 psi) | ℃ | ASTM D648 | 77 |
Haze | % | < 1.0 | |
Transmittance | % | ASDM D541 | 91 |
Refractive Index | ASDM D542 | 1.56 |