abstract |
The invention discloses a method for measuring the porosity of a microporous membrane. According to the method, alpha ray passes through the microporous membrane to be measured, the counting rate N1 of part of alpha particles passing through the microporous membrane to be measured without energy loss and the counting rate N of total alpha particles of the alpha ray are determined by an alpha ray energy spectrum, and the porosity Eta of the microporous membrane is N1/N. The method for measuring is simple, and is easy for realization of online detection. |