New HFFR PBT & Highly-reinforced PA by LANXESS for Inter-industry Applications
| Subj: Press-releses
Alexander Radeck, applications development expert in the High Performance Materials (HPM) business unit, said:
“We want to take advantage of this inter-industry event for the electrical/electronics industry to introduce our new, halogen-free, flame-retardant PBT compounds. Our exhibit also focuses on highly reinforced polyamide grades with and without a flame retardance package, and thermally conductive, electrically insulating polyamides.”
Alternative to PBTs Containing Halogen-based Flame Retardants
The halogen-free, flame-retardant PBT (polybutylene terephthalate) compounds in the Pocan BFN product line are a good alternative to their counterparts containing halogen-based flame retardants. For example:
They display better electrical behavior and higher thermal and color stability. They pass the UL 94 standard fire tests of the U.S. testing organization Underwriters Laboratories, achieving the best classification of V-0 for a test specimen up to 0.4 millimeters thick. Alexander Radeck said: “Apart from product grades with a glass fiber content of 13 to 25 percent, we will also be showcasing a new, non-reinforced compound that boasts a high elongation at break of over seven percent despite the halogen-free, flame-retardant additives.”
Another area of focus is material grades that display high glow wire resistance. In the glow wire ignition temperature test (GWIT) to IEC 60695-2-13, they achieve minimum values of 775 °C and therefore meet the requirements of standard IEC/EN 60335-1 for household appliances.
One innovation among the highly reinforced polyamide grades is the halogen-free, flame-retardant Durethan BKV 45 FN04.
This free-flowing polyamide 6 with 45 percent-by-weight glass fiber content passes UL 94 V testing, achieving the best classification of V-0 (0.4 millimeters).
The structural material is unusually stiff and strong. Its tensile modulus is 16 gigapascals (freshly molded).
Further advantages include its high tracking and thermal aging resistance.
Alexander Radeck explained:
“The material is predestined for use in structural components, for replacing thermosets and die cast metals, and for large connectors.”
LANXESS will also present its Durethan BKV 60 EF and XF, highly reinforced polyamide 6 grades with no flame retardant, suitable for highly mechanically stressed components. Despite their high glass fiber content of 60 percent by weight, they are just as free-flowing as standard polyamides with a significantly lower filler content. “We further are unveiling a compound reinforced with a 60 percent mix of short glass fibers and glass microbeads, intended for applications in which warpage is a critical factor.”
Another topic at the LANXESS stand is the new line of Durethan TC (thermally conductive) polyamides for thermal management.
Alexander Radeck explained:
“One highlight among these products is the new polyamide 6, Durethan TP 723-620. This combines excellent light reflection and thermal conductivity with very good flame retardance based on a halogen-free, flame-retardant package.”
Potential applications include heat-dissipating components, such as heat sinks and LED modules.