PVC SG5
mainly used for gramophone record, value and welding rod,
PVC pipes, PVC windows, doors, etc.
PVC SG5specification:
Tape: | SG1 | SG2 | SG3 | SG4 | SG5 | SG6 | SG7 | SG8 |
K value | 77-75 | 74-73 | 72-71 | 70-69 | 68-66 | 65-63 | 62-60 | 59-55 |
Viscosity, ml/g | 156-144 | 143-136 | 135-127 | 126-119 | 118-107 | 106-96 | 95-87 | 86-73 |
Average polymerization |
|
| 1350-1250 | 1250-1150 | 1100-1000 | 950-850 | 950-850 | 750-650 |
Number of impurity particle max | 30 | 30 | 30 | 30 | 30 | 30 | 40 | 40 |
Volatiles content % max | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 |
Appearing density g/ml min | 0.42 | 0.42 | 0.42 | 0.42 | 0.42 | 0.45 | 0.45 | 0.45 |
Residual after sieve 0.25mm mesh max | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 |
0.063mm min | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 |
Number of grain/400cm2 max | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
Plasticizer absorbency value of 100g resin | 25 | 25 | 25 | 22 | 19 | 16 | 14 | 14 |
Whiteness % min | 74 | 74 | 74 | 74 | 74 | 74 | 70 | 70 |
Residual chlorethylenecontent mg/kg max | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
Ethylidene chloride mg/kg max | 150 | 150 | 150 | 150 | 150 | 150 | 150 | 150 |
Properties:
PVC resin is a white or buff powder, the apparent density of 0.40 ~ 0.60g/cm3,
relatively density 1.4 g/cm3, refractive index of 1.544 (20 C), water absorption ≤ 0.5 %.
PVC resin Indissolve in water, alcohol, gasoline, can be swelling or dissolved in ether, ketones, chlorinated aliphatic hydrocarbons and aromatic hydrocarbons.
PVC resin Under 20 C, there is a strong acid-resistance, can be resistant to any concentration of hydrochloric acid,
PVC resin 90% or less of sulfuric acid, 50% ~ 60% of nitric acid and 20% or less of the caustic soda solution, stability of the salts.
PVC resin In the flame will burn on and left flame it will be extinguished. Excellent dielectric insulation properties
Applications:
pvc resin k67 is the most widely raw material used in plastic production
Rigid plate, gramophone record, value and welding rod, PVC pipes, PVC windows, doors, etc.
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