The Influence of Multilive Feed Processing and Fibre Length on the Stiffness and Strength of Injection Moulded 50% w/w Glass/Nylon 6,6 Composites

Abstract

The influence of fibre aspect ratio on multilive feed glass fibre/nylon 6,6 composites has been studied using wo model materials based on extrusion and pultrusion ompounding. Characterisation of the microstructure of hese compounds revealed that the fibre orientation listribution and volume fraction were similar between he compounds, but the fibre length distributions were found to be different, with the compound produced by Iultrusion compounding having the larger mean fibre aspect ratio. The mechanical performance of the two compounds was evaluated in terms of stiffness and trength across a wide range of service conditions using both tensile dilatometry and creep deformation. Under ill test conditions, an improved level of mechanical performance was seen for compounds with improved nean fibre aspect ratio. Modelling these materials in erms of stiffness and strength also revealed that mproved performance is expected with an improved ibre aspect ratio. © 1994, American Medical Association. All rights reserved.