Abstract
This work studies the lap-shear strength performance of polyethylene pipeline bonded with acrylic adhesive in the temperature range -10 to +20°C. Single lap shear test samples were firstly prepared at 20°C under various clamping pressures and curing times to determine suitable conditions under which to prepare and test further samples at temperatures of -10, -5, 0, +5 and +20°C. It was found that a decrease in curing/testing temperature to zero degrees resulted in a steady reduction in the lap-shear strength performance of the bonded joints from a mean value of 2.72MPa at +20°C to 1.15MPa at 0°C. Below zero degrees the strength of the bonded substrates was significantly reduced; no samples bonded at -5°C had sufficient strength to test and only one sample bonded -10°C was tested, which had very low strength of 0.105MPa.
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