No.4（2001）15.Humidity dependence of damper panel for house use

Norichika HASEGAWA and Shoichi TAKADA

We have investigated the humidity dependence of a recycled paper damper panel for house use from the standpoint of the absorbency of water in the sample and elasticity. In the case of the sample, of which the dimension was 400mm×40mm×30mm, it took about 90 and 130 minutes for the quantity of absorbed water and the loss factor to be saturated, respectively, when the humidity rose from 35% to 80% under 20℃. As the quantity of absorbed water in the sample used in this study increased, the flexural rigidity decreased a little and the loss factor increased or was constant.

Keywords
Humidity dependence, Damper panel, Absorbency of water, Elasticity, Loss factor, Flexural rigidity

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