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Sistema de protección multicapa de composites para evitar daños en materiales


Oferta Tecnológica
Un experto alemán en composites ha desarrollado un sistema de protección multicapa para estructuras de composite que evita daños en materiales por efectos osmóticos. La implementación de la capa o capas puede integrarse y emplearse fácilmente en numerosas aplicaciones, como construcción de barcos, energía eólica y estructuras aeroespaciales y aerodinámicas. Se buscan socios en estas industrias con el fin de establecer acuerdos comerciales con asistencia técnica.


Composites protection multilayer system to avoid material damage.
A German expert for composites has developed a protection multilayer system for composite structures to avoid material damage by osmotic effects. The implementation of the layer(s) can be easily integrated in the production process and applied for manifold applications like ship building, wind energy, aerospace and aerodynamic structures in general. Commercial agreements with technical assistance are envisaged.
Composite structures are able to bear high loads in parallel to their ply layers while the shape of the whole structure is nearly unlimited. Such loads can be exactly calculated and designed using calculation methods like finite element analysis (FEM). However, composite structures are often exposed to additional stress factors like icing, erosion (surface removal), environmental impacts by media like oil, moisture, overheating etc. While these factors are more difficult to measure, such loads and effects could be the reason of total failure of the composite structure.

To avoid such damages, a kind of protection layer can be integrated in the structure during the fabrication process. To give some examples:
· protection films made out of FEP (tetrafluoroethylene-perfluoropropylene copolymer) or polypropylene could prevent deterioration caused by oil, fatty liquids, moisture etc.
· conductive meshes made out of cooper, aluminium or bronze are foreseen to protect against lightning strikes

The main problem in integrating the multilayer protection system that must be solved is the bonded interface to the laminate. Any integration processing or bonding of these kinds of films might result in a lower quality (bad interface, bad bonding, wrinkle etc.) in terms of a high risk of an interfacial unbonding.

The solution is a decoupling of the connection process of the multilayer system and basis laminate. The multilayer gets an interface ply bonded to the film in a separated machine implementation process. Finally, the whole laminate structure is a combination of two basis elements that are connected by force- and form closure. These two basis elements are the load carrying structure and the multilayer protection laminate:

load carrying structure
laminate out of CFRP (carbon fiber reinforced Plastics), GFRP (glass fiber reinforced plastics), AFK (aramid fibre reinforced plastics), AFRP (aramid fiber reinforced Plastics) etc. in any delivery style (roving, fabric, multi axial style, tape etc.).
wet laminate, Infusion techniques, prepreg with pressure (autoclave) or vacuum only (OOA, Out Of Autoclave), RTM

multilayer protection laminate
variable combination out of foils, texture, mesh, mat etc.
analogue to functional laminates of the textile industry

To summarize the description of this technology offer it can be stated that the implementation of the layer(s) can be easily integrated in the production process and applied for manifold applications like ship building, wind energy, aerospace and aerodynamic structures in general. Thus, industrial partners related to the above mentioned fields as well as related industrial sectors are sought for concluding a commercial agreement with tech assistance.
Advantages and Innovations:
The protection system can be integrated in various production processes according to client´s specification and infrastructure requirements. The application can be even used by small enterprises and is easy to integrate in client´s ongoing process cycles.

Improvements compared to state of the art: composite structures have a high risk of damage by external effects such as vertical loads or for example moisture / water. The state of the art to avoid such problems is to protect the structures e.g. by painting or designing extreme thickness. The advantage of the new approach is the integration and combination of barrier and protecting films and plies in the laminate. The protection is now a part of the main fabrication process and thus cheaper as well as producing lower negative weight effects.
Stage of Development:
Available for demonstration
Patent(s) applied for but not yet granted
CommeR Statunts Regarding IPR Status:
Patent pending: patent applied at "Deutsches Patentamt"

Partner sought

Type and Role of Partner Sought:
Any partner related to the field of aerospace, wind energy (manufacturer of rotor blades) or ship building who is interested in a commercial agreement with technical assistance. That means in the first instance client support to optimize process and material for the related application from material selection, interface preparation, processing to supplier selection and more.


Type and Size of Client:
Industry SME <= 10
Already Engaged in Trans-National Cooperation:
Languages Spoken:


Technology Keywords:
02007005 Composite materials