In this paper,we analysed the problems that existed in the extrusion hot embossing process.To slove these problems,we designed a new extrusion hot embossing process and verified the effectiveness and feasibility of this process through experiments.The thickness and temperature of the extruded polymer film were affected by various factors.It is very difficult to ensure the uniformity of thickness and temperature before the polymer film enters into the hot embossing machine.Therefore,we add a planish unit and a temperature control unit to ensure the uniformity of thickness and temperature of the polymer film.At the same time,we produce the polymer film with microstructure on its surface by this two differern process sepatately and make some tests.The results show that:the new process greatly improved the uniformity of the thickness and temperature compared with the original embossing process.In this new process the uniformity of the thickness and temperature was better ensured.
Dynamic and precise temperature control unit for
PEMFC
single‐cell testing