Halogen-Free FR Polyamides Yield Parts With Superior Surface Finish and Excellent Property Retention upon Aging

March 31 2021

Three halogen-free FR glass-reinforced polyamide compounds with UL94 ratings of V0 provide high flow for injection molding, superior surface finish, and improved property retention in comparison with standard glass-filled FR polyamide 66.

Creamid grades A3H7G3, C3H2G4, and C3H2G6 from Teknor Apex Company are polyamide 66-based compounds with glass loadings of 15%, 20%, and 30%, respectively. Their non-halogen flame retardant formulations make possible compliance with European RoHS and WEEE directives as well as internal OEM requirements. Teknor Apex recommends the compounds for applications such as appliance and power tool housings, electronic handheld devices, components for charging infrastructure for electric vehicles, and certain under-hood automotive components requiring FR properties.

For the 20% glass-reinforced C3H2G4 grade, a comparison between dry-as-molded and conditioned properties shows notched Izod impact strength increasing from 7 to 10 KJ/m2; tensile strength decreasing from 125 to 85 MPa; elongation at break increasing from 3.0 to 3.4%; and tensile modulus decreasing from 8,300 to 5,500 MPa.

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