Brands such as Ordos, Inner Mongolia Yili, Yuhang, Inner Mongolia Zhongyan, Yili Nangang, etc.
|
Inspection basis: GB/T5761-2006 |
|
Standard specification |
Standard specification |
Standard specification |
Standard specification |
|
Test item |
|
SG3 |
SG5 |
SG7 |
SG8 |
|
Appearance |
|
White powder |
White powder |
White powder |
White powder |
|
K value |
|
73-71 |
68-66 |
62-60 |
59-55 |
|
Average degree of polymerization |
|
1300+/-80 |
1030+/-50 |
800+/-50 |
700+/-50 |
|
Number of impurity particles (pcs/100g) |
≤ |
50 |
50 |
50 |
50 |
|
Volatiles (including water) % |
≤ |
0.30 |
0.30 |
0.30 |
0.30 |
|
Apparent density (g/ml) |
|
0.50+/-0.04 |
0.54+/-0.03 |
0.54+/-0.03 |
0.57+/-0.04 |
|
0.35mm sieve residue % |
≤ |
0.1 |
0.1 |
0.1 |
0.1 |
|
Number of "fish eyes" (pcs/100cm2) |
≤ |
5 |
5 |
6 |
12 |
|
Plasticizer absorption, g/100g |
≥ |
25 |
17 |
12 |
10 |
|
Original whiteness, % |
≥ |
90 |
90 |
90 |
90 |
|
Whiteness (160℃, 10 minutes), % |
≥ |
78 |
78 |
78 |
75 |
|
Residual vinyl chloride monomer content (vcm, μg/g) |
≤ |
1 |
1 |
1 |
1 |
|
Dry flow time (s/400cm3) |
|
2.0-6.0 |
2.0-6.0 |
2.0-6.0 |
2.0-6.0 |
Application: It is one of the largest general-purpose plastics in the world and is widely used:
——In the field of building materials: mainly used for the production of profiles, special-shaped profiles, pipes, doors and windows, and energy-saving materials;
——In the field of decorative materials: mainly used for the production of automotive and furniture decorative materials;
——In the field of plastic films: mainly used for the production of raincoats, tablecloths, curtains, inflatable toys, greenhouses, plastic greenhouses, and mulch films;
——In the field of plastic soft products: mainly used for the production of hoses, wires, cables, etc.;
——In the field of packaging materials: mainly used for the production of packaging bags, plastic containers, films, transparent sheets, etc.;
——In the field of plastic daily consumer goods: mainly used for the production of various plastic daily necessities.