Mechanical Properties of Blends of HDPE and Recycled Urea-Formaldehyde Resin.
Mechanical Properties of Blends of HDPE and Recycled
Urea-Formaldehyde Resin.
(158 K)
Bliznakov, E. D.; White, C. C.; Shaw, M. T.
Journal of Applied Polymer Science, Vol. 77, No. 14,
3220-3227, 2000.
Keywords:
resins; mechanical properties; thermoset recycling; urea
formaldehyde resin; filled HDPE
Abstract:
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.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899