PVC resin is the most widely raw material used in plastic production. It has good chemical stability corrosion resistance and water resistance. It can be dissolved in acetone , hydrochloric ether, ester and some alcohol .
It can offer good solubility , good electrical insulation , thermoplasticity and membrane forming capacity.
The PVC Resins are polymerized by suspension process, their appearance being in white powder form.
They are essential materials for preparing PVC compounds. By adding blending agents and employing different techniques, they can be made into rigid or nonrigid PVC products and are suppliable in a wide range of transparent, translucent, and opaque colours.
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