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Lanxess Corp. has expanded its range of high-modulus with two highly reinforced polyamides, the Durethan BKV 60 XF and Durethan BG 60 X XF.
Lanxess said polyamides and polybutylene terephthalates are reinforced with a glass fiber content of 50 percent and are more ideal for applications in lightweight construction due to their strength and stiffness.
They are frequently a lightweight and economical alternative to sheet molding compounds and other reinforced thermosets, as well as to metals such as steel, aluminum and die cast zinc, the company said. Lanxess has been adding variations regularly to its injection molding materials in this segment, including these two new polyamide 6 grades.
Durethan BKV 60 XF is an advancement of Durethan DP BKV 60 H2.0 EF, Lanxess said, 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, it displays better melt flow by 30 percent, Lanxess claimed.
The new polyamide results in smooth surfaces with virtually no protruding glass fibers, Lanxess said, which is based on an optimized crystallization process and higher injection rates. Another advantage of this engineering material 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, Lanxess said.
The Durethan BG 60 X XF is reinforced with 60 percent of a special mixture of glass fibers and glass microspheres. Its stiffness and strength are similarly high to those of Durethan DP BKV 60 H2.0 EF, Lanxess said. Initial manufacturing trials with mass production molds already have confirmed that the material can deliver these advantages, the company claimed.