Preparation method of super-hydrophobic magnetic sponge

A super-hydrophobic and super-hydrophobic technology is applied in the field of preparation of super-hydrophobic magnetic sponges, which can solve the problems of difficulty in recycling, and achieve the effects of easy operation, simple method and improved material utilization rate.

Active Publication Date: 2014-11-19
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the modified sponge only has the function of absorbing oil. In the actual pollution control application, the sponge after absorbing the pol

Method used

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  • Preparation method of super-hydrophobic magnetic sponge
  • Preparation method of super-hydrophobic magnetic sponge
  • Preparation method of super-hydrophobic magnetic sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1. Preparation of sea urchin-like carbon-coated ferric oxide particles

[0020] 2g of dry ferrocene was placed in a stainless steel autoclave with a volume of 20ml, and 12g of dry ice was added. After tightening the kettle, heat at 400°C for 10h. After the reaction, the autoclave was opened to obtain a black product. The product was washed with alcohol three times and dried at 60°C to obtain superhydrophobic and superparamagnetic sea urchin-like carbon-coated ferric oxide particles.

[0021] figure 2 It is a scanning electron microscope photo of the product. It can be seen that the particles are composed of many nanorods gathered together, showing a fractal sea urchin-like micro-nano structure. like image 3 As shown, the contact angle between the particle surface and water is 155° by the contact angle tester. like Figure 4 As shown, the particle has superparamagnetism measured by a vibrating sample magnetometer.

Embodiment 2

[0022] Embodiment 2. Preparation of sea urchin-like carbon-coated ferric oxide particles

[0023] 3 g of dry ferrocene was placed in a stainless steel autoclave with a volume of 20 ml, and 14 g of dry ice was added. After tightening the kettle, heat at 400°C for 12h. After the reaction, the autoclave was opened to obtain a black product. The product was washed with alcohol three times and dried at 60°C to obtain superhydrophobic and superparamagnetic sea urchin-like carbon-coated ferric oxide particles.

Embodiment 3

[0024] Embodiment 3. prepare superhydrophobic magnetic sponge

[0025] A piece of commercial polyurethane sponge (both length, width and height are 1 cm) was washed several times with water and tetrahydrofuran, and then dried at 60°C. Take 0.5 g of the sea urchin-like carbon-coated ferric oxide particles prepared according to Example 1, disperse them in 10 ml of tetraoxyfuran, and ultrasonicate for 15 min. Then add 0.1 of the polydimethylsiloxane A component to the solution, and then sonicate for 30 minutes. Then take 0.01 of the B component of polydimethylsiloxane and disperse it in 10ml of tetrahydrofuran and sonicate for 30min. After sonication is complete, the two solutions are mixed together, and the dried sponge is dipped into the mixed solution. After coating, the modified sponge was dried at 60°C.

[0026] like Figure 5 and Image 6 As shown, obtained by the contact angle tester test, the sponge contact angles before and after modification are 112° and 141° respe...

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Abstract

The invention discloses a preparation method of super-hydrophobic magnetic sponge. The preparation method comprises the following specific steps: firstly, preparing sea urchin shaped carbon-coated ferroferric oxide particles with super-hydrophobicity and super-paramagnetic property by using ferrocene and dry ice as raw materials; then adding the particles into tetrahydrofuran, and mixing with a binding agent; after uniformly mixing, soaking commercial polyurethane sponge completely cleaned by water and tetrahydrofuran into a mixed solution of the particles and binding gent, taking out, and drying to obtain the super-hydrophobic magnetic sponge. The method disclosed by the invention is simple and feasible, and is low in cost; the prepared super-hydrophobic magnetic sponge can be applied to the environmental pollution treatment.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional materials, in particular to a preparation method of a superhydrophobic magnetic sponge. Background technique [0002] With the advancement of human science and technology and the development of society, environmental pollution has become a difficult problem that needs more and more attention. Among all kinds of pollution, organic pollution is a problem closely related to human life. For example, in recent years, various organic matter leakage incidents have occurred, polluting rivers and seas, etc. Therefore, adsorption materials that can separate organic matter from water have received extensive attention from researchers. Many kinds of adsorption materials have been developed, such as superhydrophobic sponge, metal mesh, polymer film and so on. Although these materials have been applied, they are more or less deficient in terms of easy separation, biocompatibility, and adsor...

Claims

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Application Information

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IPC IPC(8): C08J9/42C08L75/04
Inventor 陈乾旺闫楠汪芳
Owner UNIV OF SCI & TECH OF CHINA
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