| 摘要 |
PROBLEM TO BE SOLVED: To obtain a flexible microporous membrane suitable for use as a separating membrane by sticking a microporous body consisting of PVC and a crosslinked vinyl polymer to a substrate and specifying the average pore diameter and porosity of the resultant membrane and the specific surface area of all pores. SOLUTION: A microporous body consisting of PVC and a crosslinked vinyl polymer is stuck to a cloth or netlike substrate to obtain the objective microporous membrane. Since the microporous body has a network structure with through holes, as a result, the microporous membrane has 0.01-0.1μaverage pore diameter, 10-30% porosity, 20-50m<2> /g specific surface area of all pores and a satisfactory microporous state. Nylon, polyester, polyolefin or PVC may be used as the material of the substrate but PVC is especially preferable. The thickness of the substrate is not especially limited but is preferably about 50-500μm.
|
