Fast-curing towpregs as part of a thermoset material toolbox
- 261 Downloads
In high-volume serial production of composite components today, cycle times must generally be less than 5 min. The SGL Group has developed a fast-curing epoxy resin system that permits curing times of 1.5 to 3 min. Fibre rovings or Towpregs pre-impregnated with this resin system offer an excellent material for efficiently constructing laminates using automated fibre placement or fibre winding.
In high-volume serial production of composite components today, cycle times must generally be less than 5 min and, better still, less than 3 min in order to achieve the required output quantities. If thermoset materials are used, not only must all the manipulations (positioning, shaping, impregnation, etc.) be carried out within the above-mentioned time span but curing of the matrix material must also be completed. This calls for resin systems with extremely short curing times, which are nevertheless able to meet the requirements of the intended application, e.g. in terms of...