Title: EFFECT OF KAOLIN CLAY AS FILLER ON MECHANICAL PROPERTIES OF UNIDIRECTIONAL REINFORCED PULTRUDED COMPOSITES
Abstract: In pultrusion, kaolin clay is routinely added to thermoset resin systems to improve processability. This paper describes an investigation on the effects of a relatively course kaolin clay on the mechanical properties of unidirectionally reinforced pultruded parts. The clay used had a median particle size (as measured by light scattering) of approximately 5µm. A modified vinylester resin system with unidirectional E-glass reinforcement was used to produce the composites made in this study. A baseline system of an all E-glass (80% by weight) vinylester pultrusion was compared to the same system containing 5% of the clay.
The profile of the pultruded part was 3.20mm thick x 50.5mm wide. The study compared the effects of clay addition on tensile, transverse tensile, compression, flexural, and interlaminar shear properties of the pultruded parts as well as fatigue characteristics of the two materials. The properties measured were not consistently better or worse with the addition of this clay. This study therefore adds useful data into the database of material properties available from pultruded composite systems.
Authors: Fayaz Ali & Brenna Dickinson
Conference: CAMX 2017 –Orlando