PVC SG-3

SG-3

Superior products

First Grade

Qualified products

1

Viscosity / (ml / g)

135-127

(or K value)

72-71

Average degree of polymerization

1370-1251

2

Number of impurity particles / piece ≤

16

30

80

3

Mass fraction of volatiles (including water) /% ≥

0.3

0.4

0.5

4

Apparent density / (g / ml) ≤

0.45

0.42

0.4

         5

Mass fraction of sieve residue /%

250 μ m mesh ≤

2

2

8

63 μ m mesh ≥

95

90

85

6

Number of "fish eyes" (pieces / 400cm2)

20

40

90

7

Absorption capacity of 100g resin plasticizer / g ≥

26

25

23

8

Whiteness (160 ℃, 10min) /% ≥

78

75

70

9

Conductivity of water extract / [μ s / (cm · g)] ≤

5

5

─

10

Residual PVC monomer content / (μ g / g) ≤

5

10

30

11

Main uses

It is used for making ordinary soft products, such as wires, plastic sandals, films, bags, hoses, toys, handicrafts, auto accessories, foam plastics, etc.