| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide water repellent paste for gas diffusion layer with an excellent binding capacity, water repellency, proper permeability to a base material, and plane uniformity by not fiberizing fluororesin by a comparatively low shear force, but by fiberizing on a base material when coating by a high shear force. <P>SOLUTION: 15.0 pts.wt. of commercial PTFE dispersion, 6.3 pts.wt. of n-butanol as a solvent hardly soluble into water, 2.7 pts.wt. of an adduct of an ethylene oxide to an alcohol of HLB=10.5 as a solvent soluble into water and 8.0 pts.wt. of ion exchange water are added to carbon slurry having dispersion stability to adjust viscosity, and stirred by a disperser for 10 minutes. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
