DOI: 10.1177/026248938800700602 ISSN:
The Formation and Properties of Injection Moulded Thermoset Structural Foams
M. Brenner, P.R. Hornsby- Organic Chemistry
- Polymers and Plastics
Moulding technology is described for the production of hot cured thermosetting plastics structural foams, based on polyester and phenolic resin moulding compositions incorporating chemical expansion agents. Products with a well defined integral skin and cellular core are readily obtained by an injection-compression-decompression moulding sequence, preferably through programmed thermoset injection moulding.
Microstructure and mechanical properties of these materials are discussed, with emphasis on the load bearing and energy absorbing characteristics of fibre-reinforced structural foam variants.