Film with oil-water separation tapered needle array having underwater oleophilic property on surface as well as preparation method and use of film

An oil-water separation and conical needle technology, which is applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of complex process, accelerated progress, separation, etc., and achieve the effects of low preparation cost, easy cleaning and low energy consumption

Active Publication Date: 2013-08-28
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In CN1387932A, CN1721030A and CN101518695A, oil-water separation nets with hydrophobic and lipophilic functions were separated respectively. Although these technical solutions all have the effect of oil-water separation, they also have obvious disadvantages, such as complicated process, use of fluorine-containing compounds, etc., but the most The important disadvantage is that in these oil-water separation methods, the oil-water mixture has been separated before separation. Even

Method used

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  • Film with oil-water separation tapered needle array having underwater oleophilic property on surface as well as preparation method and use of film
  • Film with oil-water separation tapered needle array having underwater oleophilic property on surface as well as preparation method and use of film
  • Film with oil-water separation tapered needle array having underwater oleophilic property on surface as well as preparation method and use of film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] ⑴Heat and press the high-density polyethylene particles at 180℃ to form high-density polyethylene sheets with a smooth surface and thickness of about 1-2mm, cut them into 2cm×2cm size, clean them, and dry them at room temperature;

[0036] ⑵Use 2000 # Sandpaper, sanding from the root to the tip of the tapered stainless steel needle, sand the surface of the tapered stainless steel needle to form a ridge-like rough structure that is compatible with the edges and corners of the sand on the sandpaper, clean it, and dry at room temperature;

[0037] (3) Place the high-density polyethylene sheet obtained in step (1) and the tapered stainless steel needle with a ridge-like rough structure on the surface obtained in step (2) in the xyz control system of the dispenser (Nordson EFD-PicoDot, USA), and use the dispensing The machine makes the needle tips of the tapered stainless steel needles perforate arrayed on the high-density polyethylene sheet to obtain a tapered pinhole array on th...

Embodiment 2

[0042] ⑴Heat and press the high-density polyethylene particles at 180℃ to form high-density polyethylene sheets with a smooth surface and thickness of about 1-2mm, cut them into 2cm×2cm size, clean them, and dry them at room temperature;

[0043] ⑵Use 100 # Sandpaper, sanding from the root to the tip of the tapered stainless steel needle, sand the surface of the tapered stainless steel needle to form a ridge-like rough structure that is compatible with the edges and corners of the sand on the sandpaper, clean it, and dry at room temperature;

[0044] (3) Place the high-density polyethylene sheet obtained in step (1) and the tapered stainless steel needle with a ridge-like rough structure on the surface obtained in step (2) in the xyz control system of the dispenser (Nordson EFD-PicoDot, USA), and use the dispensing The machine makes the needle tips of the tapered stainless steel needles perforate arrayed on the high-density polyethylene sheet to obtain a tapered pinhole array on the...

Embodiment 3

[0049] ⑴Heat and press the high-density polyethylene particles at 180℃ to form high-density polyethylene sheets with a smooth surface and thickness of about 1-2mm, cut them into 2cm×2cm size, clean them, and dry them at room temperature;

[0050] ⑵Use 800 # Sandpaper, sanding from the root to the tip of the tapered stainless steel needle, sand the surface of the tapered stainless steel needle to form a ridge-like rough structure that is compatible with the edges and corners of the sand on the sandpaper, clean it, and dry at room temperature;

[0051] (3) Place the high-density polyethylene sheet obtained in step (1) and the tapered stainless steel needle with a ridge-like rough structure on the surface obtained in step (2) in the xyz control system of the dispenser (Nordson EFD-PicoDot, USA), and use the dispensing The machine makes the needle tips of the tapered stainless steel needles perforate arrayed on the high-density polyethylene sheet to obtain a tapered pinhole array on the...

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Abstract

The invention belongs to the technical field of function materials, and particularly relates to a film with an oil-water separation tapered needle array having an underwater oleophilic property on a surface as well as a preparation method and the use of the film. The preparation method of the film comprises the following steps of: taking a high-density polyethylene sheet as a substrate, carrying out arraying punching on the surface of the substrate by tapered stainless steel needles having ridge-shaped coarse structures on the surfaces obtained in a sanding way, shaping by polydimethylsiloxane, and building a tapered needle array which is made from the polydimethylsiloxane and has an oil-water separation action on the surface of a polydimethylsiloxane film. The surface of each tapered needle in the tapered needle array has the ridge-shaped coarse structure which has the submicron scale width and the nanoscale width and is along the axial direction of each tapered needle, and the distances among the adjacent tapered needles is micrometer scale, so that the film with the oil-water separation tapered needle array having the underwater oleophilic property on the surface, which can continuously carry out the oil-containing wastewater oil-water separation, is obtained.

Description

Technical field [0001] The invention belongs to the technical field of functional materials, and particularly relates to an oil-water separation tapered needle array membrane with underwater lipophilic properties on the surface, and a preparation method and application thereof. Background technique [0002] Oily wastewater is very harmful to the environment and life. With the development of the chemical industry and the petroleum industry, the discharge of oily wastewater into the environment has increased year by year, seriously endangering human health and safety; accidents such as crude oil leakage will also seriously threaten Ecological balance; therefore, how to find a cost-effective oil-water separation method has become a topic of widespread concern for researchers. [0003] CN1387932A, CN1721030A and CN101518695A separate oil-water separation nets with hydrophobic and lipophilic functions. Although these technical solutions have the effect of oil-water separation, they also...

Claims

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Application Information

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IPC IPC(8): B01D17/022
Inventor 李衎马杰冯琳江雷
Owner INST OF CHEM CHINESE ACAD OF SCI
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