Commercial grades of dough moulding compounds (DMC) are typically
based on glass fibre reinforcement, unsaturated polyester resins (UPR) and
particulate inorganic fillers. Such systems are inherently inflammable and
will emit dense smoke on combustion, therefore the more expensive fire
retarded grades of UPR must be used for fire critical applications.
The recently-introduced, second generation phenolic resols are intended
for composite applications. These resins have in particular, excellent fire and smoke properties which gives them the potential to replace UPRs in
DMC formulations: these phenolics are of comparative price. [Continues.]
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.