Material description and characteristics
Our binding agents represent a technologically interesting and powerful material group, which can be used or will be used in the future in various different niche applications or potential mass applications.
In comparison to other binding agent systems, both technical and economical framework conditions are not only fulfilled but far surpassed. Environmental burdens are reduced or even avoided completely.
(Porous concrete with inorganic binding agent)
These binding agent systems are a completely new type of inorganic binding agent, whose common basis is metal oxide substances such as activated minerals or synthetic, amorphous micro-structured metal oxides.
To manufacture these binding agents, both organic and inorganic materials, whose hardening can be implemented through cold or hot processes, can be employed. As cold processes we mean processes which are carried out primarily at room temperature without any heating of the binding agent. In doing so, the hardening is most often implemented through a chemical reaction.
The hardening process is implemented in aqueous solution with a high pH value and differs from the hydration processes of other inorganic binding agents such as that of Portland cement for example.
In most cases, for the formation of inorganic mouldings we employ a finely powdered metal oxide with amorphous to nano-crystaline structure whose corresponding ortho-acids preferably have a tetrahedral oxo-coordination and thus exhibit a tendency to form polyacids by means of dehydration.
With the manufacturing of such materials we use an aqueous alkali compound with powdered substances, whereby a solid with the structure of a three-dimensional network of SiO4 and AlO4 tetrahedrons is formed from an initially easy-flowing to resinous viscous paste through polycondensation.
In comparison to organic binding agents, our inorganic binding agent systems have the advantage that, thanks to their three-dimensional cross-linking, they are well suited to both binding the very smooth fibres firmly and to achieving a three-dimensional cross-linking of the nanostructures with high strength.
Working with our binding agents is identical to the polymer binding agent systems used up until now. However, in contrast to conventional binding agent systems, our binding agents are able to achieve excellent adhesion both on mineral and metallic substrates and also on thin coatings due to their dense structure.
Thanks to the good water vapour diffusion characteristics, there is no risk of condensation forming behind the coating as can often be observed with other coating systems on moist mineral substrates. No corrosion is expected on the surface due to the good resistance to chemicals as well as the inorganic compound structure.
The adhesion to mineral and inorganic surfaces is excellent due to the three-dimensional cross-linking. Very good adhesion is also achieved on metals even without adhesion conditions.
Other areas of application are the solidification and immobilisation of toxic or radioactive residues. Also products for thermal insulation or fire protection, acid-resistant surface coating and repair mortar for sewerage technology are particularly suitable areas of application.
(Inorganic insulation panel whilst being removed from the formwork)
According to VOC stipulations (volatile organic compounds) binding agents based on inorganic materials or which contain a very low proportion of organic compounds must be used. This is the case with our binding agents.
Through the use of water based and mineral or inorganic binding agents as basic raw materials, very environmentally friendly mouldings or materials that exhibit a very high level of environmental compatibility, can be manufactured. Our binding agent systems are solvent-free, as we use water as a solvent substitute thus achieving very environmentally friendly solutions.
Project: Development of new material composites based on nano-structured materials, as inorganic bonding agent systems
Within the scope of this project, new material composites were developed based on nano-structured materials, as inorganic bonding agents.
Significant factors in achieving this objective were the targeted use of synthesised nano and micro particles as well as the optimisation of the packing density of the materials employed down to nanometre level.
A further important project task was to successfully implement the project results - be they groundwork, concepts or technological developments - for the manufacturing of the new moulding with defined characteristics. This was realised through the various demonstration tests. For this reason the current results are particularly relevant as they have been confirmed through practical tests.
In addition to this project, application-related materials in the form of multi-function ceramics with nano-porous to macro-porous structures were developed as innovative solutions for many industrial sectors but which can also be used for other sectors due to the wide range of variation options for the material properties. Therefore, the nano-composites that were manufactured can also be used as substrates for weather and fire-resistant or heat insulating lightweight construction materials.
New applications for nano-composite materials are at the forefront as technical applications for the following sectors:
Construction areas, structural panels
Furniture production (garden furniture, car ports, fences, garage doors, doors, roof beams, etc.)
The automotive industry
The inorganic nano composite materials can be used as insulation for application in numerous industrial areas, for example in automotive manufacturing, the construction industry, and in refrigerating and heating plant construction.
Within the scope of this development work, we set ourselves the goal of linking the nano-structured and micro-structured materials of the new binding agent systems with the practical behaviour of the finished material.
The new inorganic binding agent systems, that could be designated as cold-hardening binders, are constructed with a complex structure. The development of such materials is distinguished in a variety of characteristics and application opportunities due to the different composition. Thus, for example, the materials can be used as an alternative to conventional binding agents, can be manufactured in a short time due to the material compositions, can be easily used without a thermal process, saving energy and yielding corresponding economical advantages. As a result the materials can also be used for developing mouldings for cladding houses.