Plural component coatings are gaining favor in the industrial coatings industry for their ability to provide superior protection for a range of substrates, including bridges, pipelines, storage tanks and more. Plural component coatings deliver numerous benefits that more than compensate for a more complicated application process.
As their name suggests, plural component coatings are made up of separate elements that aren’t mixed until moments before they are applied. Parts A and B of the coating system are heated separately to reduce their viscosity. Once the desired temperature and viscosity are reached, the components are sent toward a spray gun in the desired proportion, known as the flow rate. Only immediately before reaching the gun, moments before being sprayed, are the components mixed together. Because the components dry so quickly once mixed, applicators have only seconds to get the system from the mixing block onto the substrate.
Painting with plural component coatings requires special skills, equipment and experience. But contractors are increasingly turning to these products because of their quick cure time, high film builds, long service life, low output of volatile organic compounds (VOCs) and quick turnaround time.