Enhanced anti-pollution reverse osmosis membrane backing material and manufacturing technique thereof
A reverse osmosis membrane and support material technology, applied in reverse osmosis, semi-permeable membrane separation, osmosis/dialysis water/sewage treatment, etc., can solve the problems of low flux per unit membrane area, high one-time investment, short service life, etc. , to achieve the effect of reducing the cost of use, not easy to damage and deform, and reducing roughness
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[0012] A kind of enhanced anti-pollution reverse osmosis membrane supporting material of the present invention and its production process are described in detail below:
[0013] The invention adopts polyester long fiber and knits it through KS warp knitting. The fabric formed by warp knitting is pad-rolled with a stiffening agent to form a thin film inside the fiber, between fibers or on the surface of the fiber. The size of the openings on the front side of the support body is larger than the size of the openings on the back side. The thickness of the support is ≤0.3mil. The longitudinal density of the support is ≤35 / 50mm, and the weft density is ≤40 / 50mm. The stiffening agent is composed of polyacrylate and epoxy resin, the mass ratio is 1.5:1, and the mass concentration of the stiffening agent is 670g / L.
[0014] A production process for enhanced anti-pollution reverse osmosis membrane support materials. After knitting long polyester fibers through KS warp knitting, they ...
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