11 November 2002
11 November 2002
A recent research program to enable further cost savings in RTM technologies has created a core material tailored to suit all conventional resin infusion processes.
As a result, Röhm has now launched a new grade of ROHACELL called RI = Resin Infusion. The new foam combines the well-known properties of aerospace-grade PMI, such as superior strength-to-weight ratio, resistance to compression creep and excellent fatigue behavior, with significantly lower surface resin absorption. This adds up to a high level of synergy for weight-optimized parts.
Resin Transfer Molding (RTM) offers the opportunity for significant cost savings in the fabrication of composite structures. ROHACELL RI has the same properties as the standard ROHACELL WF grade but offers a significant reduction in resin absorption on the core surface. ROHACELL RI can be used for all advanced RTM processes with injection pressures up to 0.7 MPa and injection / curing temperatures up to 180°C. Sandwich structures can also be realized using a vacuum process (VARIM, SCRIMP etc.).
ROHACELL RI was originally introduced during JEC 2002 in Paris. A second generation of ROHACELL RI is due to be launched on the market in 2003, with further adaptation of the cell size in order to serve as a pure fly-away mandrel with zero surface resin absorption.
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