Thermal gradient chemical vapour infiltration (CVl) appears to have much promise as a process to produce carbon/carbon composites and has several advantages over conventional isothermal CVI. Using a graphite heater in the centre of porous disk preforms, Zhao et al. (2006) reported excellent densification and no surface preform plugging. The aforementioned work produced a large amount of spatial and dynamic temperature data but falls short of providing a model of temperature over space (r) and time (t). Hence, using the data reported by Zhao et al (2006), this article develops and presents two dynamic models for deposition temperature as a continuous function of t and distance from the heater surface, r. One model uses only two adjustable parameters and the other five and both capture the phenomenological structural behavior quite well. Hence, the approach presented in this work provides a methodology to model real processes using a limited amount of data and produces important continuous dynamic and spatial behaviour that can prove valuable in controlling and optimizing thermal gradient CVI processes.