利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN105555738A 堇青石质陶瓷蜂窝结构体及其制造方法 有权

堇青石质陶瓷蜂窝结构体及其制造方法
摘要：
一种堇青石质陶瓷蜂窝结构体，其特征在于，具有被多孔质的隔壁隔开的多个流路，关于所述隔壁，(a)气孔率为大于65％且75％以下，(b)利用压汞法测定的微孔分布中，(i)累积微孔容积达到总微孔容积的10％的微孔直径d10小于50μm，达到50％的微孔直径(中值微孔直径)d50为18μm以上且27μm以下，达到90％的微孔直径d90为10μm以上，以及(d10-d90)/d50为2.3以下，(ii)累积微孔容积达到总微孔容积的20％的微孔直径d20的对数与达到80％的微孔直径d80的对数之差σ＝log(d20)-log(d80)为0.25以下，(iii)表示相对于微孔直径的累积微孔容积的曲线的倾斜度Sn＝-(Vn-Vn-1)/(log(dn)-log(dn-1))的最大值为3以上，其中，dn及Vn分别为第n个测定点的微孔直径及累积微孔容积，且dn-1及Vn-1分别为第(n-1)个测定点的微孔直径及累积微孔容积。
摘要（英）：

The present invention provides a cordierite ceramic honeycomb structure and production method therefore. The cordierite ceramic honeycomb structure has a plurality of flow paths partitioned by a porous partition and is characterized by said partition having (a) a porosity of over 65% and no more than 75% and (b) a pore distribution, measured by mercury porosimetry, whereby: (i) the pore diameter (d10) of 10% cumulative pore volume of the total pore volume is less than 50 [micro]m, the pore diameter (median core diameter) (d50) of 50% is 18-27 [micro]m, the pore diameter (d90) of 90% is at least 10 [micro]m, and (d10 - d90)/d50 is no more than 2.3; (ii) the difference ([sigma] = log(d20) - log(d80)) between the logarithm of the pore diameter (d20) for 20% cumulative pore volume of the total pore volume and the logarithm of the pore diameter (d80) for 80% being no more than 0.25; and (iii) the maximum value for the slope of a curve indicating the cumulative pore volume relative to the pore diameter (Sn = -(Vn - Vn-1) / (log(dn) - log(dn-1))) being at least 3 (dn and Vn being the pore diameter and cumulative pore volume, respectively, at an nth measurement point and dn-1 and Vn-1 being the pore diameter and cumulative pore volume, respectively, at an n-1 measurement point).

公开/授权文献
0/0