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Cyclics Corporation Targets Thermoplastic Compounds With Higher Filler Loadings

18 May 2001

The Cyclics Corporation which is involved in the structural composite marketplace is now developing a reactive thermoplastic system for compounding markets.

Cyclics' initial product, CBT, melts to a water-like viscosity when heated and then reacts chemically to form the popular thermoplastic PBT (polybutylene terephthalate). While the CBT is in its low viscosity state, very high filler loadings can be achieved.

""Imagine the possibilities when mixing fillers and additives with a material that runs like water, as opposed to the highly viscous thermoplastics,"" said John Ciovacco, CEO of Cyclics Corporation. ""CBT can be used anywhere that viscosity is currently preventing compounders or injections molders from achieving the desired properties or parts.""

Fillers are commonly utilized in polymer systems to create new material combinations, enhance process ability, physical properties as well as long-term performance. These fillers can be difficult to add in high percentages to thermoplastics however. CBT's compatibility with a variety of standard fillers, including reinforcing fibers (glass and carbon), mineral fillers and metal flakes, has been demonstrated. CBT has been used to make long fiber compounds with glass and carbon fiber. Fiber loadings of 70% by weight are achieved through the rapid wetting of fibers. Another example of CBT's possibilities are to manufacture polymer bonded magnets with as much as 80% by weight ferromagnetic particles which can be molded using injection molding or compression molding while retaining the necessary flow characteristics. Processing options include but are not limited to high speed dispersion, single or twin screw compounding, in-line compounding, injection molding, and compression molding. Long fiber thermoplastic compounds or reactive systems to produce materials with handling characteristics more like Bulk Molding Compounds (BMC), or Sheet Molding Compounds (SMC) are easily manufactured.

Cyclics Corporation is commercializing an innovative plastic technology, known as cyclic thermoplastics, based on technology developed and patented by The General Electric Company (GE). Cyclic thermoplastics are a breakthrough in plastics processing making new products possible and changing the economics of existing ones. They offer the processing advantages of a thermoset, namely the low viscosity, but retain the material properties of a thermoplastic when polymerized. Cyclics products include low viscosity forms of the popular polycarbonate and polyester thermoplastics.

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