AUTOMOTIVE | UNDER THE HOOD
ers, who are today limited to products with narrow operating windows and poor performance outside those windows.” The Vydyne XHT portfolio includes four glass-
filled grades ideal for use in demanding automo- tive applications, such as charge air coolers, integrated air intake manifolds, exhaust gas recirculators and resonators. All XHT grades exhibit good flow and are regrindable, allowing excess material to be reprocessed which improves production efficiency. Ascend has also introduced a new portfolio of
Above: BASF has introduced a particle foam based on a combination of several PA6 grades
PA6. The magnetisation of the ferrite contained in it takes place directly in the mould via permanent magnets. A Multilift Select robotic system performed the handling tasks. Before the robotic system sets down the component on a conveyor belt, it is guided over a magnetic film to visualise the magnetic field. The Multilift Select featured three servo-electric movement axes and one pneumatic gripper axis for freely programmable pick-up and set-down patterns. The two-component vacuum gripper was additively manufactured as a function- al hard/soft part on an Arburg Freeformer 300-3X and specially designed for the pick-up tasks of the application. It is made of hard ABS and a soft TPU component that adapts to the part contour. For an efficient and energy-saving compressed air supply, the robotic system featured a smart vacuum unit with an air-saving function as standard. This was supplemented by load-dependent lubrication interval calculation depending on the set speeds, distances and times. These digital features save resources and working hours, says Arburg.
New materials Ascend Performance Materials has launched several new speciality polyamides suitable for under-the-hood applications. Vydyne XHT is a new portfolio of heat-stabilised PA66 and copolymers, capable of withstanding prolonged exposure to temperatures of up to 230°C. Using a combination of polymer chemistries and multi-stage heat stabilisation technology, the company says that XHT products extend the boundaries of tempera- ture resistance without sacrificing the processabil- ity, durability and mechanical properties of PA66. “Consistent high heat performance is critical in
under-the-hood applications to accommodate for various load, torque and speed conditions in engines,” says Vikram Gopal, Senior Vice-President of Technology. “We created Vydyne XHT to perform across a broad operating window for our custom-
20 INJECTION WORLD | May 2020
Above: Vydyne XHT from Ascend Performance Materials is a new portfolio of heat-stabilised PA66 and copolymers, capable of withstanding prolonged exposure to temperatures of up to 230°C
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PA610 and PA612 long-chain polyamides. With low moisture absorption, high chemical and UV resistance, the LCPA materials are engineered for a variety of applications, including monofilaments, battery seals, cable ties, automotive cooling and fuel connectors. The company is also expanding into high-temperature polyamides. New HTPA grades offer higher strength, stiffness, chemical- and temperature-resistance for metal replacement and high-heat automotive applications. BASF has introduced a particle foam based on a
combination of several PA6 grades targeting engineering applications. The particle foam offers a wide range of characteristics, including high temperature-resistance, good stiffness and strength as well as good chemical resistance, for example in contact with fuels, oils and lubricants. Additionally, the closed cell foam structure offers good com- pressive strength, a requirement for the use in crash relevant components that are exposed to high mechanical demands. Moulded part densities can be adjusted across a wide range of 150-600 g/L. Because of this versatility, lightweight applica- tions are possible as well.
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IMAGE: BASF
IMAGE: ASCEND
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