POLYMERIC MATERIALS

摘要

Apparatus for producing an activated polymerisable formulation includes a receptacle (not shown) for containing the polymerisable formulation. The formulation is fed by a pump (not shown) through a pipe (4) as represented by arrows (6) and into a static mixer (8). Walls which define the static mixer are transparent to UV radiation so that fluid within the static mixer can be subjected to UV radiation by use of an irradiation device which surrounds the static mixer. Downstream of mixer (8), the fluid passes into a (10) pipe (12) and via a nozzle (14) can be directed to a desired location. The polymerisable formulation is suitably an epoxy or urethane-based system. The apparatus may be used in the repair of cavities in structures, for example airport runway aprons.