๐“๐จ๐๐š๐ฒ'๐ฌ ๐Š๐๐Ž๐–๐‹๐„๐ƒ๐†๐„ ๐’๐ก๐š๐ซ๐ž : ๐’๐š๐ฆ๐ž ๐ฌ๐ญ๐š๐›๐ข๐ฅ๐ข๐ณ๐ž๐ซ. ๐ƒ๐ข๐Ÿ๐Ÿ๐ž๐ซ๐ž๐ง๐ญ ๐ฆ๐ข๐ฑ๐ž๐ซ ๐ฌ๐ฉ๐ž๐ž๐. ๐ƒ๐ข๐Ÿ๐Ÿ๐ž๐ซ๐ž๐ง๐ญ ๐ซ๐ž๐ฌ๐ฎ๐ฅ๐ญ. ๐“๐ก๐š๐ญ ๐ข๐ฌ ๐๐•๐‚.

๐“๐จ๐๐š๐ฒ'๐ฌ ๐Š๐๐Ž๐–๐‹๐„๐ƒ๐†๐„ ๐’๐ก๐š๐ซ๐ž

๐’๐š๐ฆ๐ž ๐ฌ๐ญ๐š๐›๐ข๐ฅ๐ข๐ณ๐ž๐ซ.

๐ƒ๐ข๐Ÿ๐Ÿ๐ž๐ซ๐ž๐ง๐ญ ๐ฆ๐ข๐ฑ๐ž๐ซ ๐ฌ๐ฉ๐ž๐ž๐.

๐ƒ๐ข๐Ÿ๐Ÿ๐ž๐ซ๐ž๐ง๐ญ ๐ซ๐ž๐ฌ๐ฎ๐ฅ๐ญ.

๐“๐ก๐š๐ญ ๐ข๐ฌ ๐๐•๐‚.


People think mixer speed only changes mixing time.

It does more than that.

It changes how the powder receives energy.

And that changes the whole dry blend history.


A faster mixer can reach drop temperature quicker, but with a different shear path.

A slower mixer can reach the same temperature, but with different coating, absorption, and dispersion.

So yes, the batch may show the same final temperature.

But the powder is not necessarily the same.


Because mixer speed can shift:

how lubricants melt and coat

how stabilizers distribute

how plasticizer absorbs

how filler disperses

how bulk density develops

how much local heat the material sees

That is why the same stabilizer can look strong in one batch and weak in another.

Not because the stabilizer changed.

Because the process environment around it changed.


The extruder will show it later:

fusion shift

torque drift

color change

plate-out

dull surface

lower thermal stability


In PVC, RPM is not just a setting.

It is part of the chemistry.


source : Orbimind AB


#PVC #PVCCompounding #ProcessControl #Stabilizers #Extrusion

#MaterialsScience #PlasticsProcessing


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