10楼: Originally posted by xunruiping at 2014-01-08 19:34:07
亲水性的影响，其中一个因素，应该是可以形成更多的氢键，有利于水分子的传递。
孔隙率的测定：
Porosity of PU membranes were determined by the mass loss of wet membrane after drying . After being wette ...

11楼: Originally posted by yingying1223 at 2014-01-08 21:25:40
PU膜在乙醇中浸润后应该要稍微擦干才能称重吧，那么擦干的程度如何掌握呢？而且乙醇的挥发性比较强，称重的时候不会一直变吗？...

12楼: Originally posted by xunruiping at 2014-01-11 17:11:45
迅速擦一下，只要擦掉表面比较明显的酒精；擦完之后可以迅速用自封袋封起来然后再称量...