B値法を用いた調湿セラミック材料の調湿特性評価

概要

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To characterize humidity conditioning ceramics, the relative humidity as a function of temperature(H(T))was measured using a glass desiccator technique with varying the ambient temperature between 298 and 288 K. A logarithmic plot of H(T)was approximately represented by a linear function, and the humidity conditioning ability was evaluated by the slope(B)of such a linear equation(B-value method). Humidity conditioning ceramics, made of several ceramic materials such as Wakkanai diatomaceous shale, calcium silicate and zeolite, were characterized according to their B-values in comparison with wood. The relation between the B-value and the ratio of the exposed surface area of the material to the volume of desiccator was also investigated to extend the efficiency of the B-value method to the large scale of actual applications. It was also found that the B-value method to estimate the humidity conditioning ability for wooden material can be applied to porous ceramics, which had B-values higher than wood. The porous diatomaceous ceramics showed the highest B-value among the ceramic investigates.
社団法人日本セラミックス協会の論文
2000-02-01