Over 200 delegates attended the ninth annual Polyurea Development Association’s (PDA) Europe conference in Berlin in November, 2015. Jane Denny reports.
Polyurea’s contribution to Rio de Janeiro’s vintage sports stadium the Maracana, the renovation of a shipwrecked sea vessel and an innovative 2K PU injection bonding material were among the highlights of the PDA conference and exhibition.
The industry, which analysts Grand View Research predict will be worth $1.4 bn by 2020, was given a welcome boost an Olympic seal of approval when it was chosen to coat areas of Rio’s Maracana stadium.
The 85,000-seat venue, which will host the opening sequence of the 2016 Olympics, got its polyurea makeover as part of the preparation for the 2014 World Cup, delegates were told.
Over 70,000m2 of seating and walkway area was covered in Huntsman polyurea over the course of three months.
In their joint presentation entitled Range of Raw Materials Set for The Polyurea Industry and Case Study of Maracana Stadium in Brazil, the firm’s application scientist amines Steven Buvens and coatings application specialist Stijn Roekaerts explained the process.
Using three to four polyurea spray machines at the site, the material was applied to the surfaces in a 3mm layer thickness and at temperatures between 70° and 75°C.
According to the pair, Gama’s G30H (with IMAGE) and G50H spray PU machines were used.
As the team – from key Huntsman customer Radial Quimica - worked, daily rainfall made the job increasingly challenging.
Despite the problems of temperature extremes, the team sprayed 10,000m2 of walkway and 60,000m2 of seating area with Huntsman polyurea.
The work was part of a EUR239m facelift given to the site in preparation for the 2014 World Cup.