| 摘要 |
Disclosed is a small-sized gas exchange apparatus of high performance having an increased gas exchange rate and a reduced priming volume, comprising a hollow fiber module M1 formed by bundling a plurality of silicone rubber hollow fibers wound in the form of a twilled pattern, a housing H1 for enclosing the hollow fiber module, an internal perfusion passage and an external perfusion passage formed within the housing H1, a first inlet A and a first outlet B formed on the housing for gas or liquid for communication with the internal perfusion passage, and a second inlet C and a second outlet D formed on the housing for gas or liquid for communication with the external perfusion passage. The silicone rubber hollow fiber is composed of a silicone rubber composition including: (a) 100 parts by weight of organo-polysiloxane having a viscosity in the range of 10,000 to 10,000,000 poise; (b) 5 to 50 parts by weight of organo-polysiloxane copolymer essentially formed of: a triorganosiloxy monomer represented by the following formula: R3SiO1/2, where R is a non-substituted or substituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and a SiO2 unit; and having a molar ratio of said triorganosiloxy monomer relative to said SiO2 unit being in the range of from 0.6 to 1.2; (c) organo-hydrogen siloxane containing at least two hydrogen atoms each being directly coupled with silicon atom, the amount of said siloxane corresponding to that of supplying hydrogen atoms directly coupled with silicon atom being 0.5 to 10 times by mole relative to vinyl groups contained in said components (a) and (b); (d) a catalytic quantity of platinum or a platinum compound; and (e) 100 to 150 parts by weight of finely powdered silica having a specific surface area of not less than 50 m<2>/g. <IMAGE> |
