The Polyurea Development Association Europe held its annual conference in London, near Heathrow Airport in November 2017. Simon Robinson paid a visit.
A wide range of papers were presented at the two-day Polyurea Development Association Europe meeting in west London in November 2017, from the importance of operator training, dust exposure regulations and the interaction between European fire regulations and polyurea-based coatings.
The papers are available to members of PDA Europe, and here we concentrate on three: a versatile three-step process to polyurea composites, surface coating polyureas and vapour blasting. The last is a technique to prepare surfaces which, proponents say avoids many of the problems with wet and dry blasting.
Tamas Balogh, technical director of Polinvent, Budapest offered a different, indirect approach to creating polyurea using a 50% water solution of waterglass such as sodium silicate (component ‘A’).
He explained that this way of making ‘indirect’ polyurea has been known in the mining and tunnel construction and rock stabilisation sectors for more than 30 years. Polinvent has tuned the resins to have long and well-controlled pot life. The user can choose among the ‘B’ component types to find pot life and viscosity that fit to the technology and to the expected weather conditions. Waterglass solution is delivered by large manufacturers; Polinvent does not produce it in house.
In this process, the water in which the…