The particle size issue of PVC
Thread Content
Recently, I encountered two cases of PVC with very strange particle size distributions, showing two peaks. To the left of the peak in the normal PVC particle size distribution (around 60–190 μm), there is another small peak in the range of 1–15 μm; there is no overlap between the two peaks. Could an expert please explain what causes these issues? This post was last edited by Encircled on all sides on 2009-4-15 19:59.]
It’s probably due to the dispersant dosage and the degree of dispersion, which result in some particles having an excessively small particle size.
2# Let’s discuss together: How are cohesive particles formed? What impact does it have on the production and processing of the products as well as their performance?
Look for dispersants and stirring; it might be that certain parts of the system are unstable, resulting in finer particles. Next, check whether the secondary cyclone material has mixed into the finished product; this has happened once here.
I think it’s a problem with the particle size analyzer algorithm; there aren’t actually particles that small. You can ask the manufacturer of the particle size analyzer.