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JEC Europe 2013 - Momentive Specialty Chemicals introduces the new Epikote Binder System 620, developed for hot-melt preforming processes and enabling mass production of automotive composite parts.
This one-component cross-linkable powder binder can be conveniently applied to carbon or glass fibres and fabrics as a powder using a hot-melt coating process.
In the softening temperature range between 80-90°C, the binder system exhibits excellent application behaviour and provides the fabric with very good workability and drapeability. Once the desired shape of preform is achieved, a short cure cycle above 120°C will initiate internal cross-linking of the binder. This higher-temperature fixation gives the preform the right stiffness for easy handling. This also ensures that the preform retains its dimensional stability even in demanding processes such as high-pressure RTM, typical of automotive mass production of composite parts. The Epikote Binder System 620 is fully compatible and complementary with the innovative fast-cure Epikote/Epikure™ binder systems Momentive Specialty Chemicals has introduced for the automotive composite market. Given the additional preform integrity provided by the cross-linkable binder, it is expected that process developers may be able to increase flow/mould fill rates or the complexity of preforms, further reducing the time needed for the RTM injection step.
The JEC Composites Show is traditionnaly the place where innovations are launched. 2013 is no exception. Here are in this feature few of these innovations. More are to come on our website and many...