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Mechanical Properties of Blends of HDPE and Recycled Urea-Formaldehyde Resin.


pdf icon Mechanical Properties of Blends of HDPE and Recycled Urea-Formaldehyde Resin. (160 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.