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To provide a porous body which can exhibit high permeability without lowering mechanical strength.SOLUTION: Provided is a porous body comprising pores of a plurality of different diameters, where (a) porosity is 55 to 70%, (b) a pore diameter ratio, which is a ratio of maximum diameter and minimum diameter of the pores, is 5:1 to 1.25:1, and in a plurality of cases of combinations of constitution (a) and constitution (b) and when permeability of the porous body corresponding to the porosity is denoted by K and permeability of conventional grind stone corresponding to the porosity is denoted by K, the following formula holds: K
【課題】機械的強度を低下させることなく高い透過率を発揮可能な多孔体を提供する。【解決手段】複数種類の異なる直径の気孔を含有する多孔体であって、（ａ）気孔率が５５〜７０［％］であり、（ｂ）気孔の最大径と最小径の比率である気孔径比が５：１〜１．２５：１であり、構成（ａ）と構成（ｂ）を組み合わせた複数の場合において、気孔率に対応する多孔体の透過率をＫ、気孔率に対応する従来の砥石の透過率をＫ０とするとき、Ｋ０＜Ｋ≦４Ｋ０である。【選択図】図７
To provide a porous body which can exhibit high permeability without lowering mechanical strength.SOLUTION: Provided is a porous body comprising pores of a plurality of different diameters, where (a) porosity is 55 to 70%, (b) a pore diameter ratio, which is a ratio of maximum diameter and minimum diameter of the pores, is 5:1 to 1.25:1, and in a plurality of cases of combinations of constitution (a) and constitution (b) and when permeability of the porous body corresponding to the porosity is denoted by K and permeability of conventional grind stone corresponding to the porosity is denoted by K, the following formula holds: K
【課題】機械的強度を低下させることなく高い透過率を発揮可能な多孔体を提供する。【解決手段】複数種類の異なる直径の気孔を含有する多孔体であって、（ａ）気孔率が５５〜７０［％］であり、（ｂ）気孔の最大径と最小径の比率である気孔径比が５：１〜１．２５：１であり、構成（ａ）と構成（ｂ）を組み合わせた複数の場合において、気孔率に対応する多孔体の透過率をＫ、気孔率に対応する従来の砥石の透過率をＫ０とするとき、Ｋ０＜Ｋ≦４Ｋ０である。【選択図】図７
POROUS BODY
多孔体
ISOBE YOSHINARI (author)
2019-06-20
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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