项目 | SG3 | SG5 | SG7 | 优等 | 一等 | 合格 | 优等 | 一等 | 合格 | 优等 | 一等 | 合格 | 粘数,ml/g | 135-127 | 118-107 | 95-87 | (或k值) | (72-71) | (68-66) | (62-60) | (或平均聚合度) | [1350-1250] | [1100-1000] | [850-750] | 杂质粒子数,个≤ | 16 | 30 | 90 | 16 | 30 | 90 | 20 | 40 | 100 | 挥发物% ≤ | 0.30 | 0.40 | 0.50 | 0.40 | 0.40 | 0.50 | 0.40 | 0.40 | 0.50 | 表观密度,g/ml≥ | 0.45 | 0.42 | 0.40 | 0.45 | 0.42 | 0.40 | 0.48 | 0.45 | 0.40 | 筛余物% | 0.25mm筛孔≤ | 2.0 | 2.0 | 8.0 | 2.0 | 2.0 | 8.0 | 2.0 | 2.0 | 8.0 | 0.063mm筛孔≥ | 90 | 90 | 80 | 90 | 90 | 80 | 90 | 90 | 80 | 鱼眼数,个/400cm2≤ | 20 | 40 | - | 20 | 40 | - | 30 | 50 | - | 100g树脂的增塑剂吸收量,g≥ | 26 | 25 | - | 20 | 19 | - | 16 | 14 | - | 白度(160oC,10min后)% | 74 | - | - | 74 | - | - | 70 | - | - | 水萃取液电导率,S/m≤ | 5X103 | - | - | - | 残留氯乙烯含量,ppm≤ | 8 | 10 | - | 8 | 10 | - | 8 | 10 | - |
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