Materials: New Nylon & PET Electrical Compounds
New Rynite and Zytel grades for automotive electrical parts and household appliances.
DowDuPont Specialty Materials, Wilmington, Del., has introduced two new electrical/electronic grades. One is Rynite FR533NH, the company’s first halogen-free PET compound for IT equipment such as chargers, transformers, relays, switches,
and motors in unattended household appliances. Containing 33% glass, it reportedly offers improved flow and lower density than halogenated PET compounds, which makes it a more economical solution. It also boasts “the best long-term heat-exposure performance in the market,” DuPont says.
The second new product is Zytel LT70G35EF, a laser-transparent black nylon 66 with 35% glass, suitable for automotive electronics. It eliminates the need to laser weld a clear part to a black part—now both parts to be joined can be colored black, as automotive customers have wanted. Also, its electrical properties are said to be stable after exposure to 85 C and 90% RH.
Plastics weigh in with added design freedom and environmental friendliness—especially when the alternative is lead.
The degree to which molded parts shrink as they cool is largely dependent upon the composition of the material being processed.
There’s more to TP polyesters than you think. You may know PET, PBT, and PETG—but what about PCT, PCTG, PCTA, and PTT? If you’re not sure what they are, how their properties compare, and who sells them, we have the answers—and lots of new developments to report.