03 April 2009
03 April 2009
At JEC Diab demonstrated a new sandwich composite architectural cladding system that had just won a JEC Innovation Award in the construction/building category.
The company also introduced several new additions to its range of structural core materials and two new finishing options.
Sandwich Composite Building Cladding System: Working closely with Diab Technologies structural and process engineers, Gothenburg-based Skandinaviska Glassystem (SG) has developed an innovative, modular cladding system that makes extensive use of sandwich composites (based on Divinycell P structural core) to support both the glazing units and the stone or metallic facing. Divinycell P was chosen because it was able to meet both structural requirements of the application and the prevailing fire.
As the system is significantly lighter than the traditional steel latticework approach - by a factor of around 4:1 – installation is much more rapid and can be carried out by a significantly smaller team of just four people. Further time and cost is saved by the fact that the modules can be installed directly to the steel reinforced, concrete floors of a building virtually as soon as the floors are complete and without the need for additional supporting steelwork.
Other benefits of taking the sandwich approach include the fact that the system offers inherent insulation properties, does not rust or corrode and is basically immune from moisture uptake even if the uninstalled modules are left exposed to the elements on the building site for a prolonged period of time.
Divinycell H35: With a nominal density of 38 kg/m3, DIab say that Divinycell H35 is the world’s lightest structural foam core.
Divinycell H160 & HP160: The decision to introduce a 160 kg/m3 density to both Diab’s Divinycell H and HP grades is particularly due to the fact that the proportion of larger boats being produced is on the increase and more and more designers and builders are requesting a density between the existing 130 and 200 kg/m3 for use in hull bottoms.
By offering the additional densities, Diab maintains that designers and builders will be able to more accurately match the density to the loads. This should result in better weight optimization and reduced core material costs.
GRV Finish: As part of its further development of its Core Infusion process, Diab has introduced the GRV finishing option. This option can reduce resin usage by over 50% and as a result offers further weight savings. This is especially the case when it is used in conjunction with grid-scored, scrim-backed (GS) core materials. The new finish will be available from all Diab production facilities and on all cores that are used for infusion moulding including Divinycell H, HP, F and P grades.
Kit-Lok: A good fit between the various core kit elements is essential to achieve consistent quality in terms of component performance, weight and surface finish. This is especially the case in infusion and resin transfer moulding because any gaps can result in resin shrinkage problems and cosmetic issues.
With DIAB’s new Kit-Lok system individual core kit parts can be securely locked together in and out of the mould in less than a second without the need for staples or adhesives. Each kit component features small rebated profiles on the edges of each part. Once the kit parts are placed in their correct position they are securely locked together with the Kit-Lok ‘biscuit’ piece that is the same grade and density as the core kit parts to which it is being applied.
Covestro is pushing ahead with developing and marketing its continuous fibre reinforced thermoplastic (CFRTP) composites by introducing Maezio as brand name.
Shape Machining has pressed the first batch of parts that combine short fibre sheet moulding compound (SMC) over an optimised, long fibre carbon ShapeTex preform.
3M is adding Scotch-Weld Multi-Material Composite Urethane Adhesives DP6310NS and DP6330NS to its portfolio of structural adhesives. These products are designed for lightweight assemblies in trucks, buses, RVs, speciality vehicles and passenger rail, and other markets like sporting goods and panels.