SILVA, M. S.; SILVA, Maria do Socorro.
Abstract:
In this work, the effect of silane coupling agents on thermal, mechanical, and
thermo-mechanical properties of injection molded Folypropylene/Attapulgite compôsites
were investigated. mitially the effect of untreated fíller addition up to 40% w/w was
evaluated, the optimized filler concentration detennined and shown to be in the 5 - 15% w/w
range. The effect of fíller aurface modification with three different silane coupling agents (A-
174, A-1100 and Ucarsil PC1A/PC1B) on the same properties was evaluated for the
optimized fíller concentration range. The resulta shown that attapulgite is a reinforcing and
nucleating filler to porypropylene and that silane coupling not did improve the properties
investigated. In mies particular system, silane coupling seemed to nave a lubricating effect.
