Mechanical Properties of Blends of HDPE and Recycled Urea-Formaldehyde Resin.
Mechanical Properties of Blends of HDPE and Recycled
Bliznakov, E. D.; White, C. C.; Shaw, M. T.
Journal of Applied Polymer Science, Vol. 77, No. 14,
resins; mechanical properties; thermoset recycling; urea
formaldehyde resin; filled HDPE
The mechanical properties of blends of high-density
polyethylene (HDPE) with a recycled thermosetting
filler, urea-formaldehyde grit (UFG), were evaluated in
the range of 0-23% of filler by volume. Ethylene-acrylic
acid (EAA) copolymers and an ionomer based on EAA were
evaluated as compatibilizers. The observed tensile
modulus of the ionomer-treated blends was raised to
three times the modulus of virgin polyethylene, whereas
the modulus of the untreated blends reached double that
of polyethylene. The ionomer-treated blends also showed
a higher tensile strength than the blends without filler
treatment. The improvement in the properties was
assigned to an increased interaction between the filler
and the polymer matrix.