β Scribed by P. J. Burchill; Z. Mathys; C. P. Gardiner
No coin nor oath required. For personal study only.
An analysis of mass loss and damage depth produced by the combustion of styrenic resins and their fibre glass composites has been undertaken. Mass loss rates at a selected heat flux were found to be linearly related to those at a different heat flux. Given the scatter in the experimental data, these relative rates obeyed the same Arrhenius relationship for both resins and their fibre glass composites. Damage depth in composites was also found to be linearly related to mass loss, and thus may be predicted. It is therefore shown that mass loss and damage depth can be predicted as a function of time at any desired heat flux given that mass loss-time data are available at a specific heat flux. The predictions are limited to consumption of the matrix of about 30% by weight, at which stage the mechanical properties are greatly reduced.
π SIMILAR VOLUMES
The oxygen index (OI) of poly(butylene terephthalate) (PBT) tends to decrease when it is combined with milled-glass fibres either with or without the sizing treatment. This shows that the previously found apparent increase of flammability of PBT glass fibre composites (GFPBT) as compared to PBT is n