PVC resin SG5 K66-68
white or buff powder,
the apparent density of 0.40 ~ 0.60g/cm3
relatively density 1.4 g/cm3
Detailed PVC resin SG5 K66-68 Specification:
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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