New EURO-5 exhaust gas standards, which will take effect in 2008, will push several automotive plastics applications toward high-end materials. “Alternative fuels, concentrated blow-by gases in mechanical separators as well as ammonia solution used for treating exhaust gases have a highly aggressive effect on seals and molded pars,” comments Klaus Bender, DuPont’s automotive market development manager. DuPont is developing HTN polyphthalamide (PPA) grades for specific applications that will meet the tougher requirements. Also under development are extrudable nylon 66 grades with improved thermal performance.
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
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