Customization: | Available |
---|---|
CAS No.: | 9002-86-2 |
Formula: | -(CH2-Chcl)N- |
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Polyvinyl chloride is high molecular compounds polymerized by vinyl chloride monomer (VCM) with structuralelement as CH2-CHCLn,degree of polymerization usually as 590-1500.In the process of re-polymerization ,affectedby kinds of factors such as the polymerization process, reaction conditions, reactant composition, additives etc.It can produce eight different types of PVC resin and the performance is different. According to residual contentof vinyl chloride in polyvinyl chloride resin, is can be divided into :commercial grade, food hygiene grade andmedical application grade in appearance,polyvinyl chloride resin is white powder or pellet.Its averagedensity: 1.40g/cm².
Polyvinyl Chloride Resin |
SG3 |
SG5 |
SG8 |
|
Inspection item |
Value |
|||
K value |
72 - 70 |
68 - 66 |
59 - 55 |
|
Viscosity number |
135 - 127 |
118 - 107 |
86 - 73 |
|
Number of impurity particles |
≤ 16 |
≤ 16 |
≤ 20 |
|
Volatile content (incl. water)% |
≤ 0.30 |
≤ 0.40 |
≤ 0.40 |
|
Apparent density |
≥ 0.45 |
≥ 0.45 |
≥ 0.48 |
|
Particle size |
≤2.0 |
≤ 2.0 |
≤ 2.0 |
≤ 2.0 |
≥90 |
≥ 90 |
≥ 90 |
≥ 90 |
|
Number of Fish Eye (/400 cm2) |
≤ 20 |
≤ 20 |
≤ 30 |
|
Plasticizer absorption of 100g resin |
≥ 26 |
≥ 20 |
≥ 14 |
|
Whiteness (160, after 10 min.) % |
≥ 80 |
≥ 80 |
≥ 75 |
|
VCM Residue PPM |
≤ 3 |
≤ 3 |
≤ 3 |