Two-component epoxy resins, while having excellent adhesion & strength, are liable to turn yellow upon exposure to UV light. Stress cracking while the adhesive is curing, is also a possibility.
Single component acrylic cements, such as Scigrip 16 (medium thickness syrup ) & Scigrip 4SC (water thin liquid ) are excellent choices for many applications. The choice of which one to use depends on the application. Scigrip 16 is typically used in applications where fast cure with gap filling is required. Scigrip 4SC is the ideal candidate for gluing polycarbonate, flat on flat. Both adhesives are commonly used for the manufacture of polycarbonate housings, signs, letters and display units.