| 摘要 |
PURPOSE:To obtain a stable high output, by using a hydrophilic solvent of low volatility to increase the mechanical strength of a matrix layer to fulfill the capacity of a fuel cell. CONSTITUTION:100g of SiC powder of 1mum in mean grain diameter are mixed with 50ml of ethylene glycol of 198 deg.C in boiling point as a hydrophilic solvent so that the grains of the SiC powder are dispersed in the ethylene glycol. 5-20% of a PTFE dispersion is added as a binder to the matrix so that they are stirred together into a solid state. The solid material is then made into a sheet of 200mum in thickness by rollers. The sheet is removed of most of the ethylene glycol by water washing and thereafter dried at a temperature of 60 deg.C and baked at a temperature of 300 deg.C so that a matrix film is made. The mechanical of the rolled matrix film is thus increased three times or more to nearly double the bubbles pressure of a matrix layer made in a blade method. |
