Utilization of Fly Ash as Polypropylene Filler
Fly ash is the finally mineral residue resulting from the
combustion of the char coal in electric generating plant. Fly ash consists of
inorganic matters in the coal that has been fused during coal combustion. Fly
ash generally consists of SiO2, Al2O3, SO3, CaO and other mineral. Fly ash
particle generally are spherical in shape. Fly ash particles also have 10 -
20μm in size. Fly ash can dissolve in water so being problem for environment.
Fly ash also can being problem for human health such as irritating eyes, skin,
nose and inhalation and cancer (MSDS, 2005).
At this moment, some reseacher
examine how fly ash become usefull for human. One of that research, made fly
ash as the material filler of polypropylene. Fly ash make polypropylene more
strenght than pure polypropylen as the result. It is signed that polypropylene
modified by fly ash filler with 0.15% w/w in plypropylen at composition can
improve their ultimate tensile strenght 12.8% higher than the pure
polypropylene. Polypropylene Modificated by adding fly ash filler in, are not
change its chemical resistance.
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