Product: Polyvinyl Chloride Resin
Chemical Formula: (C2H3Cl)n
Cas No:
9002-86-2
Print Date: May 10th, 2020
Features thermo plasticity, being insoluble into water, gasoline and alcohol, swelled or dissolved into ether, ketone, chlorinated aliphatic hydrocarbons, and aromatic hydrocarbon, high resistance to corrosion, and good dielectric property.
Widely used in pvc pipes, window profiles, films, sheets, tubes, shoes, fittings, etc.
In 25kg kraft bag or 1100kg jumbo bag.
ITEMS | SG-3 | SG-5 | SG-7 | SG-8 | |
---|---|---|---|---|---|
Viscosity(ml/g) | 127-135 | 107-118 | 87-95 | 73-86 | |
K value | 71-72 | 66-68 | 60-62 | 55-59 | |
Impurity particle number ≤ | 16 | 16 | 16 | 16 | |
Volatiles(incl.water ) %≤ | 0.30 | 0.30 | 0.30 | 0.30 | |
Bulk density g/ml ≥ | 0.48 | 0.53 | 0.53 | 0.53 | |
Sieve ratio% | 0.25mm ≤ | 1.0 | 1.0 | 2.0 | 2.0 |
0.063mm ≥ | 98 | 98 | 97 | 97 | |
"Fish eye" number unit /400cm2 ≤ | 10 | 10 | 20 | 20 | |
100g resin plasticizer absorbtion g ≥ | 28 | 19 | 16 | 14 | |
Whiteness(after 160℃10min)≥ | 80 | 80 | 80 | 80 | |
Residual VCM ppm ≤ | 1.0 | 1.0 | 1.0 | 1.0 |
PVC is a kind of plastic used widely in building materials. Therefore, it will not be
replaced for a long time in the future, and it will have great application prospects
in less developed areas in the future.
As we all know, there are two ways to produce PVC, one is the international common
ethylene method, and the other is the unique calcium carbide method in China. The
sources of ethylene method are mainly petroleum, while the sources of calcium
carbide method are mainly coal, limestone and salt. These resources are mainly
concentrated in China. For a long time, China's PVC of calcium carbide method has
been in an absolute leading position. Especially from 2008 to 2014, China's PVC
production capacity of calcium carbide method has been increasing, but it has also
brought many environmental protection problems.
The power consumption of calcium carbide production is very huge, so this will pose
some challenges to China's power supply. Because electricity is generated by burning
coal, it needs to consume a lot of coal, so the combustion of coal will inevitably
pollute the atmosphere. However, China has made some changes in policies over the
years. China is constantly upgrading its industrial chain. Now we can see that China
has imported a lot of oil, and local enterprises are encouraged to import oil to
refine downstream products. Therefore, in recent years, several new ethylene process
manufacturers have been added in China, and all the new PVC production capacity in
China in recent years is the production capacity of ethylene process. The production
capacity of China's calcium carbide method has stopped new approval. Therefore, in
the near future, the number of ethylene plants in China will continue to increase
and the calcium carbide process will continue to decrease. In the future, China's
export volume of ethylene process will continue to increase, and gradually become
the world's leading exporter of ethylene process PVC.