Kadaladex® polyethylene naphthalate (PEN) film from DuPont Polyester Films was used in audio speakers using ferrofluids to dissipate heat from the voice coil. Film tested in both ester- and hydrocarbon-based ferrofluids at 125C showed virtually no change in properties, mass, or dimensions, and the fluids themselves were unaffected, the company says.
EverLastTM high heat-resistant, printable ceramic label materials from Imtec Inc. are pre-printed and fired and allow for automatic identification and data collection with all bar code symbologies. The materials are offered in a variety of structures, which allows for in-process identification, with temperature resistance extremes from -300 to 2,550F. Applications include those subject to mechanical shock and harsh environments, such as heat transfer processes and chemical treatments.
Spectar® copolyester from Eastman Chemical Co. can be recycled and incinerated, meeting environmental requirements. The copolyester is a second-generation PETG that addresses the need in the heavy-gauge sheet market for a higher-clarity resin less expensive than polycarbonate and significantly tougher than acrylic sheet, the company says.
S-2 silicone cleaner and surface-prep solvent from Dow Corning Corp. is a non-aqueous formulation based on volatile methysiloxane (VMS). The fluid can help companies reduce overall process emissions and simplify record keeping. Lab analysis confirms no-toxic constituents, ozone-depleting compounds, and no contribution to global warming.
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