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Raw materials
PVC Resin SG7 plastic material |
|
Suspension Grade |
SG3 |
SG5 |
SG7 |
SG8 |
|
K value |
72-71 |
68-66 |
62-60 |
59-55 |
|
Viscosity, ml/g |
135-127 |
118-107 |
95-87 |
86-73 |
|
Average polymerization |
1350-1250 |
1100-1000 |
950-850 |
750-650 |
|
Number of impurity particle≤ |
30 |
30 |
40 |
40 |
|
Volatiles content %,≤ |
0.40 |
0.40 |
0.40 |
0.40 |
|
Appearing density g/ml≥ |
0.42 |
0.42 |
0.45 |
0.45 |
|
Residual after sieve 0.25mm mesh≤ |
2.0 |
2.0 |
2.0 |
2.0 |
|
0.063mm l≥ |
90 |
90 |
90 |
90 |
|
Number of grain/400cm2≤ |
40 |
40 |
40 |
40 |
|
Plasticizer absorbency value of 100g resin |
25 |
19 |
14 |
14 |
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