1 research outputs found
Effect of reactive and nonreactive surface modifications and compatibilizer use on mechanical and flame-retardant properties of linear low-density polyethylene filled with huntite and hydromagnesite mineral
In the current study, huntite and hydromagnesite (HH) was used as
flame-retardant additive in linear low-density polyethylene (LLDPE). The
effect of HH amount on the flame-retardant and mechanical properties of
the composites was investigated. The compatibilizer (ethylene butyl
acrylate) use and the surface modifications with stearic acid and silane
coupling agent were used in order to improve the mechanical properties
of the composites. The mechanical properties of the composites were
studied using tensile test and dynamic mechanical analysis. The
fire-retardant properties of the composites were investigated using
limiting oxygen index (LOI), mass loss calorimeter, vertical (UL 94V)
and horizontal (UL 94 HB) burning tests. According to the flammability
test results, LOI value increased, horizontal burning rate reduced as
the added amount of HH increased, whereas UL 94V rating remained burn to
clamp. According to the mechanical test results, the addition of HH
reduced the tensile strength and elongation at break values and
increased the elastic modulus and the transition temperature of the
LLDPE as the added amount increased. Only the compatibilizer use
improved the flammability properties of the composites with improved
tensile strength. Both stearic acid and silane modification merely
increased the toughness of the composites