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Preparation method of oleophylic and hydrophobic magnetic polystyrene-polyurethane composite sponge

A polyurethane sponge, lipophilic and hydrophobic technology, applied in separation methods, chemical instruments and methods, alkali metal compounds, etc., can solve the problems of high heat resistance requirements of raw material foam, difficult to control the reaction process, unfavorable production and application, etc., to achieve durable Low thermal requirements, high oil-water selectivity, good elasticity

Active Publication Date: 2019-10-18
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term heating in the preparation process will damage the foam skeleton, which requires high heat resistance of the raw material foam, and the reaction system is complex, and the reaction process is difficult to control, which is not conducive to large-scale production and application (Yu L, et al. Robust magnetic polystyrene foam for high efficiency and removal oil from water surface[J].Separation and Purification Technology,2017,173:121-128.)

Method used

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  • Preparation method of oleophylic and hydrophobic magnetic polystyrene-polyurethane composite sponge
  • Preparation method of oleophylic and hydrophobic magnetic polystyrene-polyurethane composite sponge
  • Preparation method of oleophylic and hydrophobic magnetic polystyrene-polyurethane composite sponge

Examples

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Effect test

Embodiment 1

[0031] Embodiment 1: Preparation of lipophilic and hydrophobic magnetic polystyrene-polyurethane composite sponge

[0032] Weigh 150mg of nano-iron ferric oxide and 30ml of absolute ethanol in a small beaker, and ultrasonically disperse the system for 2 minutes. Cut the polyurethane sponge into a size of 1cm×1cm×3cm, then take one piece and add it to the above-mentioned beaker, and continue to sonicate for 10 minutes. Finally, the sponge was taken out and placed in an oven at a temperature of 60° C. to dry for 2 hours to obtain a magnetic polyurethane sponge.

[0033] Sequentially measure 6mL styrene and 0.3mL divinylbenzene and mix them uniformly in a quartz tube by ultrasonic for 2min. Take the above-mentioned dried magnetic polyurethane sponge and immerse it in the solution, protect it with nitrogen gas, and irradiate it with a high-pressure mercury lamp for 14h. Finally, wash the sponge thoroughly with toluene, ethyl acetate, and ethanol in sequence, and dry it in an oven...

Embodiment 2

[0037] Embodiment 2: Preparation of lipophilic and hydrophobic magnetic polystyrene-polyurethane composite sponge

[0038] Weigh 150mg of nano-iron ferric oxide and 30ml of absolute ethanol in a small beaker, and ultrasonically disperse the system for 2 minutes. Cut the polyurethane sponge into a size of 1cm×1cm×3cm, then take one piece and add it to the above-mentioned beaker, and continue to sonicate for 10 minutes. Finally, the sponge was taken out and placed in an oven at a temperature of 60° C. to dry for 2 hours to obtain a magnetic polyurethane sponge.

[0039] Sequentially measure 6mL styrene and 0.1mL divinylbenzene and mix them uniformly in a quartz tube by ultrasonic for 2min. Take the above-mentioned dried magnetic polyurethane sponge and immerse it in the solution, protect it with nitrogen gas, and irradiate it with a high-pressure mercury lamp for 14h. Finally, wash the sponge thoroughly with toluene, ethyl acetate, and ethanol in sequence, and dry it in an oven...

Embodiment 3

[0041] Embodiment 3: Preparation of lipophilic and hydrophobic magnetic polystyrene-polyurethane composite sponge

[0042] Weigh 150mg of nano-iron ferric oxide and 30ml of absolute ethanol in a small beaker, and ultrasonically disperse the system for 2 minutes. Cut the polyurethane sponge into a size of 1cm×1cm×3cm, then take one piece and add it to the above-mentioned beaker, and continue to sonicate for 10 minutes. Finally, the sponge was taken out and placed in an oven at a temperature of 60° C. to dry for 2 hours to obtain a magnetic polyurethane sponge.

[0043] Sequentially measure 6mL styrene and 0.5mL divinylbenzene and mix them uniformly in a quartz tube by ultrasonic for 2min. Take the above-mentioned dried magnetic polyurethane sponge and immerse it in the solution, protect it with nitrogen gas, and irradiate it with a high-pressure mercury lamp for 14h. Finally, wash the sponge thoroughly with toluene, ethyl acetate, and ethanol in sequence, and dry it in an oven a...

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Abstract

The invention discloses a preparation method of oleophylic and hydrophobic magnetic polystyrene-polyurethane composite sponge. The preparation method comprises the steps that firstly, the surface of polyurethane sponge is coated with a layer of nano ferroferric oxide through an immersion ultrasonic method to obtain magnetic polyurethane sponge, then by taking the magnetic polyurethane sponge as asubstrate, taking styrene as a monomer and taking divinylbenzene as a cross-linking agent, nitrogen is introduced at the room temperature for protection, polymerization of the styrene on the surface of the magnetic polyurethane sponge is promoted through ultraviolet illumination, and the oleophylic and hydrophobic magnetic polystyrene-polyurethane composite sponge is prepared. Ultraviolet light isadopted to initiate styrene polymerization to generate polystyrene, the polystyrene is connected to the surface of a polyurethane skeleton through covalent bonds, and the advantages that an initiatoris not needed, and reaction conditions are mild and easy to control are achieved. The oleophylic and hydrophobic magnetic polystyrene-polyurethane composite sponge prepared through the preparation method is developed in pore structure and high in oil and water selectivity, and can quickly absorb oil stains on the water surface, and due to the good elasticity of the polyurethane substrate, a prepared product can be recycled to remove the oil stains.

Description

technical field [0001] The invention relates to a preparation method of lipophilic and hydrophobic magnetic polystyrene-polyurethane composite sponge, which belongs to the technical field of material preparation. Background technique [0002] During the process of oil extraction and transportation, frequent oil spills often have a catastrophic impact on marine ecosystems, causing immeasurable losses to marine life, coastal wetlands, fishing, tourism, etc. In addition, with the rapid development of industry, more and more oily industrial wastewater is discharged into rivers, polluting fresh water resources and seriously threatening the growth of river aquatic animals and plants and human health. [0003] In order to prevent and control the possible oil pollution of water bodies, various oil pollution treatment methods such as fence method, oil spill recovery method, combustion method, chemical method, biodegradation method and adsorption method have been established. Among t...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F1/40
CPCB01J20/265B01J20/28009B01J20/28045C02F1/285C02F1/40
Inventor 姜炜周宇张宁赵刘明杨楠宋欣
Owner NANJING UNIV OF SCI & TECH
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