Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Release agent free demolding of components & heat and electricity conducting composite material

10.10.2013
At K 2013 in Düsseldorf (Hall 07, Stand B05) the Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Bremen, will present FlexPLAS® release films and ReleasePLAS® coatings which allow effective demolding of components without the use of release agents.

Focus will also be put on a new polymer-metal composite material which is suitable for the structural monitoring of components or for seawater desalination applications.


Release agent free manufacture of very large components: Checking the deep-drawn fold-free FlexPLAS® release film on the mold for a CFRP aircraft fuselage section (© Fraunhofer IFAM).


Heat conducting composite pipes for seawater desalination (© Fraunhofer IFAM).

Effective and residue-free demolding, as well as coating

It is a process that is repeated hundreds of thousands of times a day in industry on a small scale: A component is manufactured using a mold and thereafter removed from the mold. New technologies from Fraunhofer IFAM, namely FlexPLAS® release films and ReleasePLAS® mold coating technology, allow effective demolding of components without the need to use release agents.

The FlexPLAS® release film technology was awarded the “AVK Innovation Prize 2012” and the “Composite Innovations Award 2013”. Features of these films are their extreme elasticity and durability. They can be stretched with little force and can even withstand extreme elongation of up to 300 percent without functionality impairment. This is ideal for fold-free application, even on curved or structured molds. The films can also be used manufacturing very large components made of fiber reinforced plastics (FRPs).

Following demolding, the components can be immediately coated without the need for complex pre-treatment. This is because there is no transfer of materials from the release film, meaning no costs are incurred removing contaminants or residues of release agents. The new technology also allows the in-mold coating of fiber composite components: This process is relatively easy and involves applying a gel coat to the FlexPLAS® release film. The degree of matt/gloss of the coated surface can be adjusted via the roughness of the FlexPLAS® release film that is employed. This coating technique significantly lowers the risk of coating defects. The production of the FRP component itself takes place on top of the coating. The in-mold coating and FRP component are cured together and the coated component with the release film is then removed from the mold. If the release film is kept on the component to the end of the manufacturing process or until delivery to the final customer, then it also serves as a protective film.

In contrast, the ReleasePLAS® coating is applied directly to the mold. It perfectly matches the surface structure and its properties can be adapted to various customer-specific requirements.

New composite material conduct heat and electricity

The new material is a mixture of plastic and metal, namely a “polymer-metal composite”. A wide range of polymers can be used as the matrix material for the composite. The material can therefore be readily customized for specific applications. Other advantages: The material is easy to process because of his plastic character. It is also light and conducts electricity and heat very effectively due to the high metal content.

The composite material is ideal for the structural monitoring of load-bearing components. When a component is exposed to loads, the electrical resistance of the composite changes. These signals can be transmitted via a cable on the component and then analyzed by a measuring instrument. The composite material is used in the form of heat-conducting pipes for seawater desalination. The principle of desalination: Seawater is sprayed onto pipes through which hot gas or water flows, so heating the pipes. Pure water evaporates from the seawater leaving behind a salty waste liquor.

Contact
K 2013 I October 16-23, 2013 I Düsseldorf I Germany
Hall 07 I Stand B05

Anne-Grete Becker | Fraunhofer-Institut
Further information:
http://www.ifam.fraunhofer.de

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Ocean atmosphere rife with microbes

17.10.2017 | Life Sciences

Neutrons observe vitamin B6-dependent enzyme activity useful for drug development

17.10.2017 | Life Sciences

NASA finds newly formed tropical storm lan over open waters

17.10.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>