Royal DSM extends high performance materials portfolio with EcoPaXX

DSM extends high performance materials portfolio with EcoPaXX

9:54 AM, 21st July 2016
Royal DSM extends high performance materials portfolio with EcoPaXX
EcoPaXX offers strength and reliability even in critical areas like the weld lines (areas where different flow fronts merge) in complex designs.

SINGAPORE: Royal DSM is extending its portfolio of high performance materials that answer the need in demanding automotive applications for hydrolysis resistance across a wide range of temperatures. The company targeted at numerous water-cooling related applications is announcing a new application for a hydrolysis-resistant grade of its high performance bio-based polyamide, EcoPaXX.

DSM’s extensive portfolio of materials based on polyamides 410 and 4T (EcoPaXX and ForTii respectively) are all inherently resistant to hydrolysis. One particular grade, EcoPaXX Q-HG6/7, is very well suited for applications such as expansion tanks that need to resist coolants at high temperatures.

It enables part weight to be cut by as much as 30 percent compared with polyamide 66. A recently-developed thin-walled “T” connector for a coolant hose in this grade has just been approved for use by a major German car manufacturer and is scheduled to go into commercial production in the next few months.

EcoPaXX offers strength and reliability even in critical areas like the weld lines (areas where different flow fronts merge) in complex designs,” said Thomas Selberdinger, sales manager automotive at DSM.

For applications where even higher temperature resistance is required, DSM points to grades of ForTii. These have similar thermal properties as other polyphthalamides (PPAs), but with superior processability.

Now, DSM is adding to its range of high performance materials with compounds based on Xytron polyphenylene sulfide (PPS), which is also an inherently hydrolysis resistant polymer; these are intended for applications where very high dimensional stability is part of the requirements. In addition, DSM is introducing a new grade of Akulon polyamide 66 that has very good resistance to water/glycol mixtures used at elevated temperatures in automotive cooling systems.

Polyamide 66 for automotive water cooling systems

With the addition of all these new compounds, DSM now has a product pallet that covers just about every application where hydrolysis resistance is needed, whatever the operating temperature,” said Selberdinger.

We are well known for our strength in high-heat polyamides, but a PA66 grade with very good hydrolysis resistance was something that we lacked. I am proud to say that we have now filled that gap. On top of that, our new Xytron PPS compounds will help us to enter even more demanding applications where extreme stability is called for,” added Selberdinger.

The new Akulon PA66 is available in two versions: HR-HG6 and HR-HG7, containing 30 percent and 35 percent glass fibre reinforcement respectively. Both have shown good resistance to an aqueous solution of ethylene glycol under accelerated tests.

They comply with OEM requirements to have a high retention of flexural strength after immersion in the solution for 1000h at 135°C. Applications targeted by the new Akulon grades include expansion tanks, air intake manifolds and oil pans with integrated cooling channels, and oil filter/cooler modules.

New range of inherently hydrolysis-resistant PPS compounds

DSM is currently carrying out final tests on newly developed Xytron PPS compounds in water/glycol solutions.

DSM will be offering PPS compound formulations with both glass fiber reinforcement and mineral filler to provide the required characteristics for automotive components, not only in cooling systems, but also ignition, lighting, fuel, drive, and control systems. PPS has sufficient heat resistance for use in components operating in environments with temperatures constantly

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