| 摘要 |
An improved porous support layer (40, 42) includes hydrophobic pores and hydrophilic pores integrated throughout the layer (40, 42), wherein the hydrophobic pores are coated with a hydrophobic substance and include about 75 % to about 95 % of the total pore volume of the layer (40, 42), and the hydrophilic pores comprise about 25 % to about 5 % of the total pore volume of the layer (40, 42). A method of manufacture of the layer (40, 42) includes the steps of filling about 25 % to about 5 % of the pore volume of a carbon fiber substrate layer with a blocking material; applying a hydrophobic substance to the unfilled pore volume of the substrate layer; and heat treating the dried substrate at a temperature adequately high to volatilize or decompose the blocking material and fuse the hydrophobic substance to the pores to produce the porous support layer (40, 42). |
