Once the regulation is in place, materials will need an ITT (Initial Type Testing) and a Life Cycle Analysis certified by a Notified Body (NoBo), said Magner. The Euro-wide consistency of NoBo processes and comparability of supplier’s information was a potential plus for business, he suggested. He added that the Kiwa Polymer Institute in Florsheim, Germany, is a NoBo
“Until now, the CE marking was just an entrance to the European market showing a product conforms to the norm. It provided low level familiarity with a product,” he said. Conversely, and despite the barrier to market created by the legislation, he said the new system presents manufacturers, importers and dealers with the opportunity to advertise a product’s outstanding characteristics.
The new Product Contact Points will provide market participants with access to the national technical prescriptions for construction products and information on the rules for the incorporation, assembling or installation for a specific construction product. Germany’s NoBo - the Federal Institute for Research for Products - operates to “improve the free movement of goods and facilitate access to the national market,” he said.
Declaration of Performance
“The DOP (Declaration of Performance) is the basis of everything now,” said Magner. It documents a product’s performance in relation to the essential characteristics of the construction project for which it is being distributed. “It is key for the CE marking,” added Magner.
He told delegates that the document has to be available in print or online and in the language of the country in which it is being distributed. This is a development, Magner indicated, that could help exporting businesses attract new custom. He said the DOPs will “grant a better comparability of all products in Europe” because they allow the business to advertise any outstanding characteristic of the product.
As a final word Magner raised the new EU basic requirement No 7, which documents a product’s environmental impact and sustainability. Magner said the EN 305 EU Construction Industry Regulations’ will influence how businesses recycle materials after demolition. “It is a sword of Damocles hanging above us all,” he said.
“I am sure that polyurea and all polymers will be affected by this requirement. Be aware that it will raise some questions for you,” he added.
Ethacure 90 vs water
Bayer MaterialScience AG’s Karl Wuehrer, a manager and senior engineer at the company, updated delegates on developments with BMS's fast-setting aliphatic 2K polyurea. This had changed because the product's reactivity enhancer and performance modifier - Albermarle’s Ethacure 90 chain extender – was withdrawn last year.
Wuehrer’s presentation Polyaspartic Coatings Technology explained how BMS is optimising cure technology for polyurea to incorporate the ‘ideal 60-minute pot life’ and the sprayer’s preference for a five to ten-second cure time into the same product.
The audience enjoyed the revelation that the aliphatic curative alternative is water. By switching to water, Wuehrer said the reactivity can be modified within a wider range right down to a two-second pot life and the high content of tixotropic additives reduced to a normal level.
Faced with the lack of technology to allow solvent free roller coating application, Wuehrer said BMS’s Desmophen had made the goal a reality with the addition of a polyisocyanate.
Desmophen NH 2850 XP is still a trial product which offers a good pot life to curing ratio said Wuehrer, it also has colour stability.
The system has a variable cure speed of between 20 and 40 minutes, near-zero VOC and forms a hard, durable film with very good abrasion resistance added Wuehrer.
At the start of the development project in 2011, the challenge stemmed from the near impossibility of producing a solvent-free flexible, easy-to-use material for roller applications due to the material’s high viscosity, he said.