Materials distributor Velox has added a new line to its offering from Asahi Kasei Plastics. Leona 90G & 91G Series (polyamide 6/6+6i) resins are based on partially aromatic polyamide copolymers.
The grades are designed for visual stability, high modulus (>19 GPa) and minimal isotropic shrinkage whilst maintaining dimensional accuracy and low post-mould warpage. They are also said to display strong weatherability and vibration-dampening characteristics.
The 90G Series is a glass fibre-reinforced material, whereas the 91G Series is glass fibre and mineral-reinforced. The 90G Series allows processing at low mould temperatures (90°c) while enabling quality finishes, easy colourability and good flow characteristics even when manufacturing thin-walled, complex parts, claims Velox.
The group says that Leona 90G compounds are UV-stable and provide mechanical stability even in a conditioned state.
For potable water applications, Leona has the KTW, WRAS, ACS and W 270 approvals. For hot water applications it is approved to WRAS.
Asahi Kasei Plastics developed Leona resin with 60% glass-fibre reinforcement specifically for the Ford Motor Company in 2012, when it was designing longer register vanes. Velox says that the grade met the firm’s requirements for high strength and high modulus, while at the same time providing the finished part with strong aesthetics, despite the considerable glass-fibre content.