MATERIALS: Radici & Rochling Develop Heat-Resistant Blow-Molding-Grade Nylon

The new nylon compound can withstand continuous exposure to hot air at up to 446 F.

A new high heat-resistant blow-molding-grade nylon was developed by the Radici Group (U.S. office in Wadsworth, Ohio) in collaboration with Rochling Automotive of Germany and Duncan, S.C., with the initial aim of producing turbo air pipes for use by a major automotive manufacturer. Capable of withstanding continuous exposure to hot air at temperatures of up to 446 F, the new formulation reportedly opens up new metal replacement opportunities.

            This latest addition to the broad range of Radici’s Radilon nylon compounds portfolio is a copolymer with a semi-aromatic component which, in combination with other additives used to retard the thermal oxidation process, is said to endow the material with very high heat resistance properties. In addition, the formulation is said to ensure high melt strength and good blow-moldability.

            Trials and validation tests performed in Rochling’s laboratories have resulted in quantifying some of the new nylon’s advantages. Included are: 15% weight reduction; 5-7% lower energy consumption in production due to lower process and mold temperature required; longer-lasting molds thanks to the lower abrasion of nylon compared to competitive PPS; and enhanced impact resistance compared to PPS—Charpy unnotched impact strength of + 72% at 23 C; Charpy notched impact strength of +52% at 23 C.