Preparation method of super-hydrophobic oleophylic polyurethane sponge

A Polyurethane Sponge, Hydrophilic Technology

Active Publication Date: 2018-08-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the waste utilization of waste tires can solve environmental problems such as "black pollution" caused by waste tires to a certain extent. On the other hand, the prepared superhydrophobic and lipophilic polyurethane sponge material can be used for marine pollution caused by oil spills, Water environment pollution problems such as river and lake pollution caused by the discharge of waste chemical reagents

Method used

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  • Preparation method of super-hydrophobic oleophylic polyurethane sponge
  • Preparation method of super-hydrophobic oleophylic polyurethane sponge
  • Preparation method of super-hydrophobic oleophylic polyurethane sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Ultrasonic cleaning of 1ⅹ1ⅹ2cm polyurethane sponge in absolute ethanol for 30 minutes, take out and press out the ethanol in the sponge, then put it into acetone for ultrasonic cleaning for 30 minutes, and then press out the solvent in the cleaned sponge, Put it in an oven at 80°C for 60 minutes, and dry it for later use;

[0024] (2) Take waste tire tread rubber and ignite it with an alcohol lamp, grind the residue after burning into powder in a ball mill, the ball mill speed is 3800r / min, the grinding time is 1.5h, and pass through a 150-mesh standard inspection sieve; Add the sieved powder and 0.1g of polyvinyl formal resin adhesive to 50mL of acetone solvent, and stir for 10min to obtain a dispersion;

[0025] (3) Soak the dried polyurethane sponge in step (1) in the dispersion prepared in step (2), take it out after 2 minutes and place it in an oven at 100°C for 60 minutes to dry and solidify to obtain a superhydrophobic and lipophilic polyurethane sponge. The...

Embodiment 2

[0029] (1) Ultrasonic cleaning of 1ⅹ1ⅹ2cm polyurethane sponge in absolute ethanol for 20 minutes, take out and press out the ethanol, put it into acetone for ultrasonic cleaning for 20 minutes, then press out the solvent in the cleaned sponge, and place it in 100 ℃ oven for 40min, after drying for use;

[0030] (2) Take the waste tire tread rubber and ignite it with an alcohol lamp, and grind the burned residue into powder in a ball mill. Sieve powder and 0.08g butyl rubber adhesive, add to 45mL acetone solvent, stir for 15min to obtain dispersion;

[0031] (3) Soak the dried polyurethane sponge in step (1) in the dispersion prepared in step (2), take it out after 3 minutes and place it in an oven at 110°C for 50 minutes to dry and solidify to obtain a superhydrophobic and lipophilic polyurethane sponge. The contact angle of the test is shown in Table 1, and the absorption capacity is shown in Attached Table 2.

Embodiment 3

[0033] (1) Ultrasonic cleaning of 1ⅹ1ⅹ2cm polyurethane sponge in absolute ethanol for 25 minutes, take out and press out the ethanol, put the sponge in acetone for ultrasonic cleaning for 25 minutes, then press out the solvent in the cleaned sponge, and place Put it in an oven at 110°C for 25 minutes, and dry it for later use;

[0034] (2) Take waste tire tread rubber and ignite it with an alcohol lamp, and grind the burned residue into powder in a ball mill. Sieve the powder and 0.15g of polyurethane adhesive, add to 30mL of acetone solvent, stir for 18min to obtain a dispersion;

[0035] (3) Soak the dried polyurethane sponge in step (1) in the dispersion prepared in step (2), take it out after 5 minutes and place it in an oven at 90°C for 70 minutes to dry and solidify to obtain a superhydrophobic and lipophilic polyurethane sponge. The contact angle of the test is shown in Table 1, and the absorption capacity is shown in Attached Table 2.

[0036] Table 1 Surface contact...

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Abstract

The invention discloses a preparation method of super-hydrophobic oleophylic polyurethane sponge. According to the method, the super-hydrophobic oleophylic polyurethane sponge is prepared by taking porous polyurethane sponge as a matrix and utilizing a hydrophobic oleophilic of a waste tire comburent to prepare super-hydrophobic oleophylic sponge, and the super-hydrophobic oleophylic sponge can beused for separating oil from water. The method is simple and effective, and provides a new thought of waste utilization of a waste tire. The prepared super-hydrophobic oleophylic polyurethane spongehas the advantages of high selective absorption capacity, high oil absorption rate and the like to an oil-water mixture, and can be used for solving the problems of water environment pollution, such as offshore oil spill.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a preparation method of a superhydrophobic and lipophilic polyurethane sponge. Background technique [0002] With the rapid development of the economy, the society is facing more and more environmental problems. In industrial production, the discharge of organic solvents and the leakage of crude oil during oil transportation will cause damage to the environment of rivers, lakes, oceans and other water bodies. How to quickly and efficiently realize oil-water separation is critical to solving the above problems. Traditional oil-water separation methods such as centrifugation, adsorption, incineration, and chemical methods generally have problems such as low separation efficiency and high cost. Therefore, it is of great significance to prepare a new type of oil-water separation material with low cost, high separation selectivity, high separation efficiency and reusabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/42C08J9/40C08L75/04
CPCC08J9/40C08J9/42C08J2375/04
Inventor 刘维锦柳雷王瑞
Owner SOUTH CHINA UNIV OF TECH
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