Luckily, polycarbonate is a relatively easy plastic to stick. Either to itself or to other materials, there are glues available for most applications. Typically, polycarbonate does not need any type of cleaning, however, depending on the application, we often suggest degreasing with X320 degreaser. For cross bonding polycarbonate to other materials such as metals (in particular ferrous metals) surface cleanliness is important!
The choice of adhesive depends very much on the application. Typically, adhesives or sealants for use on polycarbonate must be clear, in order to maintain optical clarity.