CAS No.: | 9002-86-2 |
---|---|
Formula: | (CH2-Chcl)N |
EINECS: | 208-750-2 |
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Item |
Superior product |
First grade |
Qualified product |
|
Average degree of polymerization |
1135-981 |
|||
The number of impurity particles |
≤ |
16 |
30 |
60 |
Volatile (including water) content (%) |
≤ |
0.3 |
0.3 |
0.5 |
Apparent density(g/mL) |
≥ |
0.48 |
0.48 |
0.45 |
Sieve residue% |
250 μm mesh ≤ |
1.6 |
2 |
8 |
63 μm mesh ≥ |
97 |
90 |
85 |
|
Number of fish eyes (6min152ºC) / 400cm^2 |
≤ |
20 |
30 |
60 |
100g resin plasticizer absorption (g) |
≥ |
21 |
19 |
- |
Whiteness (160ºC, 10min)/% |
≥ |
80 |
78 |
70 |
Residual vinyl chloride content (ug/g) |
≤ |
3 |
5 |
10 |
There are several different K-Value available in PVC Suspension grade, including:
K-Value 50-60: PVC resins with lower K values fall in this range. These resins are typically lower in molecular weight and are considered more flexible and processable. They are often used in applications where flexibility and ease of processing are essential, such as in the production of flexible films, cables and certain types of pipes.
K-Value 61-65: PVC resins in this mid-range of K values strike a balance between flexibility and rigidity. They are versatile and find use in various applications, including rigid pipes, fittings and profiles for construction, as well as in the manufacturing of certain consumer goods and packaging materials.
K-Value 66-70: Higher K values represent PVC resins with a higher molecular weight. These resins are typically more rigid and offer improved mechanical and thermal properties. They are commonly used in applications where rigidity and strength are critical, such as in the production of window frames, rigid pipes and various building materials
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