materials | ETPs Right: This
structural part for a car headlight is moulded in
ForTii Ace PAA from DSM
either 40 or 50% glass fibre reinforcement and the choice of organic or inorganic stabilisers.
Potential target applications include clutch and gear components as well as structural parts and supporting brackets in the engine compartment. Grivory G5V is the latest product group addition to the Grivory GV family. The modulus of elasticity
DSM says ForTii Ace JTX8 can match the thermal
stability of a standard copper iodide stabilised polyph- thalamide (PPA) grade, even though it contains no halogen-based stabilisation system. EMS-Grivory claims to currently offer the world’s
widest range of PPA products. It launched Grivory HT 12 some years ago and has just introduced a new Grivory HT product line that it says has considerably increased temperature performance. The new grades are intended for application areas
where “regular” PPA reaches it limits in terms of mechanical loading. “With the same melting point as Grivory HT1 (325°C), the new product line offers significantly more performance,” the company says. “The E-modulus at 140°C has been increased by 50% and the heat distortion temperature (HDT/C) by 50°C to 250°C. With the same geometry, the new Grivory HT grades can withstand higher loads at elevated temperatures.” The family includes four basic grades, available with
in a conditioned state at 80 °C is around 40% higher than that of the existing Grivory GV. Focus applications are components for automotive interiors requiring temperature resistance at temperatures of up to 80 or 100°C (there are two grades). “Standard grade Grivory G5V shows a significantly reduced moisture uptake compared to PA 66,” says a spokesman. “With Grivory G5V, the further reduced water uptake leads to higher dimensional accuracy and a clearly reduced lowering of the modulus of elasticity at high temperatures and in a moist environment.” A third new line, Grivory G6VX-AP (Advanced
Performance), is described as a new generation of performance polyamides for high precision compo- nents, characterised by very high stiffness and impact strength as well as high dimensional stability. EMS- Grivory says the new materials are particularly suitable for thin-walled structural frames of various types of portable electronics. “Grivory G6VX –AP products are well suited for parts
in any light weight sport devices as well as consumer or professional drones,” the company adds. Target industrial applications are mechatronic components for fluid and motion control such as pneumatic valves, regulators, controllers, drives, sensors and actuators. EMS-Grivory says these grades, based on a new partially aromatic polyamide, show practically un- changed stiffness and strength values even in a conditioned state. Reinforced grades apparently exhibit very little warpage and are easy to process. Radici Group, meanwhile, used the K fair to
announce its first move into the PPA sector with the introduction of Radilon Aestus T product portfolio, a family of high performance polyamides targeted at demanding automotive, E&E and plumbing applications. The Radilon Aestus T product portfolio includes two
Graphical representation of deformation of the new Grivory HT XE 10129 grade at 140°C compared to a standard PPA (sample thicknesses 3.4mm and 4.0mm respectively) Source: EMS-Grivory
30 INJECTION WORLD | November/December 2016
PPA lines – Aestus T1 and Aestus T2 - and a high temperature PA hybrid grade – Aestus T3. Radici said the company is currently working with a number of partner companies to develop commercial applications. Two Aestus T1 grades will be available initially, both with 45% glass reinforcement. Aestus T1 RV330RG is a black grade offering a heat deflection temperature (ISO75/2 Af) of 275°C aimed at automotive cooling system applications; Aestus T1 RG450RKC is a natural grade with heat deflection temperature of 285°C aimed at plumbing
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