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POLYOX™ is a line of water-soluble polyethylene oxide resins made of linear polymers with a high molecular weight in the range of 100,000–10,000,000 g/mol. This high molecular weight is key to creating a great degree of elongational viscosity that significantly reduces misting in synthetic and semisynthetic metalworking fluids and coolants. A structural representation of POLYOX™ is presented below, along with the effect of elongational viscosity in preventing fluid misting. Here, the long polyethylene oxide chains resist stretching forces during fluid atomization and prevent the separation of larger fluid droplets into smaller ones, thereby reducing misting.
Polyethylene Oxide Structure
Linear Polyethylene Oxide Chain
Elongational Viscosity Imparted by Polyethylene Oxide
Many metalworking shops control metalworking fluid misting by installing costly containment and collection systems. POLYOX™ is comparatively much cheaper to employ as it is extremely effective at low use rates. Shown below are tests that were conducted to demonstrate the efficacy of POLYOX™ in controlling metalworking fluid misting, where misting was significantly reduced by adding only 250 ppm of POLYOX™ to the formulation.
Grade
|
Molecular weight
|
Measured viscosity range (cPs), at concentration (%)
|
---|---|---|
1,000,000
|
400–800, 2
|
|
2,000,000
|
2,000–4,000, 2
|
|
4,000,000
|
1,650–5,550, 1
|
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