JEC COMPOSITES MAGAZINE - Issue #98 - July/August 2015 - 24

materials

for fuel caps - is an example of material innovation for bodywork exteriors. It is dimensionally stable and
withstands the temperatures involved
in cataphoretic painting. In this application, it is used as an alternative to
polyphenylene ether and polyamide
blends and mineral-reinforced PBT or
polyamide compounds.

Flame-retardant polyamides

Polyamide and PBT compounds for automotive exterior parts

parts. The component was created in
a DLFT (direct long fibre thermoplastic) process using a polypropylene
compression moulding compound.
The Tepex Dynalite 104-RG601
(PP&GF) inserts triple the strength
and energy absorption of the DLFT
component.
The company also developed a material innovation for the DLFT compression moulding process in the form
of Durethan B 24 CM H2.0. This
polyamide 6 has significantly better
flow properties than conventional
polyamide 6-based long-fibre moulding compounds. It produces no flue
gases on extrusion. Furthermore, its
heat resistance means the material can
withstand the temperatures involved
in cataphoretic painting (CP), thus
offering a CP-capable alternative to
polypropylenes in the DLFT process.
Examples of the hybrid moulding process, where Tepex inserts are simultaneously moulded and back-injected
in an injection mould, include the
seat shell for a compact car. In the
event of a crash, the component absorbs considerably more energy than
comparable designs using sheet steel
or plastics reinforced with long glass
fibres. This provides a greater degree
of safety. The safety component is
approximately 800 grams lighter than
previous versions.

Extremely easy flowing
Durethan BKV 60 XF is a new material for lightweight design. Just like
the series-tested Durethan DP BKV
60 H2.0 EF, this polyamide 6 is reinforced with 60% glass fibres. However, while its mechanical property
profile is of a similarly high standard,
its melt flow is more than 30% better. This enables the construction of
strong structural components that
exhibit intricate rib structures with
wall thicknesses of less than one millimetre.

New polyester
for fuel caps
Pocan B 5220 XF - a glass-bead-reinforced material specifically designed

Tensile test (DIN EN ISO 527) after heat aging

24 jec composites magazine / No98 July - August 2015

Applications for halogen-free flameretardant Durethan polyamides -
including a carrier for high-voltage
components in the battery system of
an electric vehicle - are among the
company's latest innovations. This
carrier is made from injection-moulded Durethan BKV 20 FN01. Thanks
to its organophosphorus flame
retardant package, this extremely
tough polyamide 6 achieved the best
classification - V-0 (0.75 mm) - in
tests to the American standard UL 94
(Underwriter Laboratories). The special feature of this material is its wide
processing window, which enables a
reliable and stable injection moulding
process. The material can also be processed at higher temperatures, meaning that longer and more complicated
flow paths are also supported. n
More information:
www.lanxess.com

http://www.lanxess.com

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #98 - July/August 2015