Template Speakers

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NMP4-SL-260132COOL-COVERINGSPARALLEL SESSION
CERAMIC TILESConclusions next steps
KERABEN GRUPO, S.A. Miguel Angel Bengochea
6 months follow-up meeting 9-10th
December2010 CSGI. Treviso-ITALY.
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Technical requirements for Ceramic Tiles

• Technical requirements in terms of NIR
  characteristics expected, standards and norms to
  be accomplished by the final products and use
  requirements of the new building systems (based
  on each material QFD).
• 30 microns for the particle size of the selected
  oxides, crystal in nano sizes.
• Al2O3 pure in the trials, an estimation of 10
  of alumina is reasonable
• dirt will affect the reflection (depends on
  particles size and amount of dirt) aging tests
  scheduled will show the effect of this event
• temp is a critical issue. It has to be 1200ºC
  what will happen with the crystalline structure
  at this temp. It has to be researched what will
  happen if will there are integration with the
  matrix.
• step 1 to lay alumina on top a dark tile with
  low temp (800ºC). if results are good then well
  try with temp by mixing with commercial frits at
  high temp (1.200ºC).
• aging tests we must start them very soon
  because last so much UV radiation, temp, the
  couple freeze-defreeze-dirt are the only topics
  than may cause aging problems.
• We have no big concern about accomplishing
  standards , as far alumina is a standard product
  used in ceramics to reach the better
  characteristics of functional use.

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Technical requirements for Ceramic Tiles

• Technical requirements in terms of NIR
  characteristics expected, standards and norms to
  be accomplished by the final products and use
  requirements of the new building systems (based
  on each material QFD).
• ITC send s to UNIVPM and IRIS samples of std
  tiles to check reflection measures.
• To avoid modeling results dispersion, we should
  define a preferred color to be improved by NIR
  additives dark ones are those where the
  improvement can be higher therefore are the first
  target.
• Contingency plan as forecasted, to apply the
  nanostructured NIR reflecting particles by using
  an organic top coat already developed by ITC for
  another applications.TNO proposes to use a sol
  gel coating, prepared at 300ºC that will have no
  UV radiation resistance problems as may occur
  with organic coatings

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Ceramic Tiles

• NEXT STEPS
• END OF DECEMBER
• ITC send s to UNIVPM and IRIS samples of std
  tiles to check reflection measures f conventional
  tiles. This feeds up the deliverable D.3.1. about
  conventional tiles NIR properties.
• END OF JANUARY
• MBN sends 1 kg nanoparticles to ITC detail on
  what in the next weeks
• END OF FEBRUARY
• ITC obtaining first samples of tiles on nano
  alumina.
• Test by ITC and then UNIVPM, IRIS
• Price/sqm quantification of the amount if
  nanomaterial o put in the tile.
• To run more detailed thermal analysis different
  colors in particular cases. First priority to
  dark colors among chosen in first ITC trials

Tilers parallel session members Ana Gozalbo,
Alberto Colella, Elisabetta Delponte, Luca
Celotti, Colm Kenny , Marco Emiliani, Miguel
Bengochea
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Technical requirements for Ceramic Tiles
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Technical requirements for Ceramic Tiles
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Limitations in costs for Ceramic Tiles

• Target cost, in terms of nanocrystalline
  materials to be used, and
• final building systems to be developed.

Market Price for cool ventilated tiles (net of tax) 43 /m2
Market Price for cool bonded tiles (net of tax) 30 /m2
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Technical strategy for needed research for
Ceramic Tiles

• Technical strategy to be applied to achieve the
  desired performance and cost.
• Selection of nanocrystalline materials for the
  research phase.

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• Objective
• decrease aSOLAR without changing colour (aVISIBLE)

• Approach
• use of nanostructured oxides TiO2, Al2O3, MgO,
  Fe2O3, Cr2O3
• use of pigments with high NIR reflectance

theoretical values0 NIR absorption
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Industrial processes for Ceramic Tiles

• Industrial processes affected,
• potential modifications, its admissible impact if
  needed in terms of technology and cost.

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Ceramic Process