Analytical methods of preparing composite membrane were divided into which a few kinds?

composite membrane is a microporous membrane or ultrafiltration membrane as support layer, on the surface covered with thickness is only 0. 1 to 0. 25 microns of dense layers of homogeneous film as the walls of separation membrane. Has a lot to the increase of flow of through material. Below small make up to introduce the methods of preparing composite membrane were divided into which a few kinds?

preparation methods are divided into four categories:

1, laminated method, thin dense homogeneous membrane preparation first, and then laminated on the porous support membrane;

2, dip coating method, the polymer solution leaching paint on the microporous membrane, then dry, can take active monomers or prepolymer solution leaching on the microporous membrane, heat or radiation curing;

3, plasma vapor deposition method, the surface of the porous support membrane with plasma glow produce dense homogeneous membrane;

4, interfacial polymerization, in the porous support membrane on the surface and interfacial polymerization with active monomers.