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Lanxess expands high-modulus thermoplastics range

21 Oct '14

2 min read

Lanxess has introduced two new highly reinforced polyamides - Durethan BKV 60 XF and Durethan BG 60 X XF, which it says have ultra-thin wall thickness and excellent surface qualities and are tailored for ‘ultra-thin-wall technology’.

Durethan BKV 60 XF is an advancement of Durethan DP BKV 60 H2.0 EF, which already is established in mass production for articles such as lightweight front ends, spare wheel recesses and large transmission oil pans.

The new product is also reinforced with 60 percent glass fibers, but with a comparably high-quality set of mechanical properties and it displays better melt flow by 30 percent.

“That is especially the case for very thin-walled applications. With our high-tech plastic, processors can achieve wall thicknesses of one millimeter or less, meaning they can easily fabricate high load-bearing structural parts with thin ribbing,” explains Dr Stefan Theiler, at Lanxess.

“The new polyamide results in smooth surfaces with virtually no protruding glass fibers and this excellent surface quality is based on an optimized crystallization process and higher injection rates, which are possible thanks to the high flowability of the melt,” Lanxess informs.

It adds, “Another advantage of this engineering material – which also permits laser marking – is its improved resistance to thermal aging. For example, the tensile stress at break of test samples was still above 200 MPa after over 3,000 hours of hot-air aging at 180 °C.”

The second material innovation Durethan BG 60 X XF is reinforced with 60 percent of a special mixture of glass fibers and glass microspheres and its stiffness and strength are similarly high to those of Durethan DP BKV 60 H2.0 EF.

“The unique feature of this material is that its shrinkage is significantly more isotropic, and components therefore hardly tend to warp at all. We see major application opportunities in thin-walled, high-stiffness back shells for tablet PCs, but also in automotive interiors,” Lanxess explains.

“Another contributing factor for these applications is the excellent surface qualities that can be achieved with this material,” says Theiler. Initial manufacturing trials with mass production molds already have confirmed that the material can deliver these advantages. (AR)

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Lanxess expands high-modulus thermoplastics range

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