POSS® Dispersion Aids - Case Study
POSS® Titania - Enhanced filler dispersion improves appearance and eases processing
Problem:
Fillers can add color and improve the mechanical properties of many polymers, and can save money by replacing costly resin. Unfortunately:
- Poorly dispersed fillers increase viscosity
- High loadings must be used to achieve desired color/properties
- Voids in agglomerated filler may decrease mechanical properties
- Common dispersants degrade at processing temperatures
POSS® DIspersion Aids can solve these problems at low loadings
POSS® DIspersion Aids react with the surface of the TiO2, creating a monolayer coating on each particle. The organic R-groups, when properly matched to your resin, compatibilize the filler particles and allow for complete dispersion, and no particle agglomeration.
* Save money by reducing melt viscosity
Poorly dispersed filler affects the flow of polymers, whether in solution or the melt, and increase viscosity. When the proper R-groups are selected, POSS® DIspersion Aids will reduct the melt viscosity of the polymer. A 10x reduction in melt viscosity can be realized with as little as 3% loading (by weight of filler) of POSS® DIspersion Aids.
* Save money by using more filler
The viscosity increase with added filler often limits the amount of filler that can be used. POSS® DIspersion Aids help to disperse the TiO2 completely, allowing the polymer to flow freely. This can allow you to add up to 20% more filler to the polymer while maintaining the same viscosity.
* High thermal stability leads to better color retention
Due to the inorganic core, POSS® DIspersion Aids are significantly more thermally stable than common dispersants - up to 400ºC. This means that POSS® Titania can even be used in high temperature engineering plastics. In addition, POSS® DIspersion Aids will passivate any reactive groups on the surface of the filler, so the TiO2 will not catayze degradation.
Learn more about POSS® Dispersion Aids . . .
Click on the images at right to see a larger picture and more information. ⇒
Watch the POSS® Dispersion Aids iFomercial.
Download the POSS® Dispersants brochure or the POSS® Titania TDS.
Ask a POSS® Expert how POSS® Dispersion Aids can work for you.
