Parameter | Grade | |||
Standard: GB5761-1993 | SG3 | SG5 | SG8 | |
Viscosity ml/g | 135-127 | 118-107 | 86-73 | |
K-Value | 72-70 | 67-65 | 59-55 | |
Average degree of Polymerization | 1300+/-50 | 1000+/-50 | 700+/-50 | |
Number of impurity particles ≤ | 16 | 16 | 20 | |
Volatile content (incl. water) % ≤ | 0.3 | 0.4 | 0.4 | |
Apparent density ≥ | 0.42 | 0.48 | 0.5 | |
Particle size | ≥ 0.25mm ≤ | 2 | 2 | 0.4 |
≥ 0.063mm ≥ | 95 | 95 | 95 | |
Number of Fish Eye (/400 cm2) ≤ | 20 | 20 | 30 | |
Plasticizer absorption of 100g resin ≥ | 26 | 19 | 22 | |
Whiteness (160°C, after 10 min.) % ≥ | 78 | 78 | 75 | |
VCM Residue PPM ≤ | 5 | 5 | 5 |