NetComposites
Attwater

New PMI foams designed for resin infusion processes

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.





Share this story


Related / You might like...

Coriolis Composites Secures Contract with National Institute for Aviation Research

Coriolis Composites has been selected by the National Institute for Aviation Research (NIAR) at Wichita State University (WSU), US, to provide a thermoplastics capable Automated Fibre Placement (AFP) system.

Boeing and Thermwood Demonstrate New 3D Printing Technology

Boeing and Thermwood have employed additive manufacturing technology to produce a large, single-piece tool for the 777X programme. The project is demonstrating that additive manufacturing is ready to produce production quality tooling for the aerospace industry.

CRP USA Presents Windform Composite Materials at Satellite Innovation 2018

CRP USA will display solutions for the space industry manufactured in the Windform family of materials at Satellite Innovation 2018 at the Silicon Valley Computer History Museum, Mountain View, California, US, on 9-11 October.