CELL FOR MEASURING GAS PERMEABILITY OF RESIN FOAM, GAS PERMEABILITY MEASURING APPARATUS AND GAS PERMEABILITY MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To measure gas permeability of resin foam.;SOLUTION: A gas permeability measuring cell 1 includes: a lower cell body 10 forming a carrier gas circulation part 18 in its inside and opening a communication surface 20 on its upper surface 10a; an upper cell body 12 having an upper wall 12a and a sidewall 12b, and when setting the upper cell body 12 on the lower cell body 10, forming a measuring gas circulation part 26 by the upper wall 12a, the sidewall 12b, the upper surface 10a of the lower cell body 10 and the communication surface 20; and a first abutting plate 14 and a second abutting plate 16 between which resin foam 50 is held in the measuring gas circulation part 26. The gas permeability measuring cell 1 is configured so that a part of supplied measuring gas is transmitted through the resin foam 50 and exhausted from a carrier gas outlet 24 through the communication surface 20 and the carrier gas circulation part 18, and the residual measuring gas is passed through a gap between the second abutting plate 16 and the resin foam 50 and exhausted from the measuring gas outlet 32. A gas permeability measuring apparatus including the gas permeability measuring cell 1 and a gas permeability measuring method using the gas permeability measuring apparatus are also provided.;COPYRIGHT: (C)2013,JPO&INPIT