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Super-hydrophobic polyurethane sponge as well as preparation method and application thereof

A polyurethane sponge, super-hydrophobic technology, applied in separation methods, chemical instruments and methods, liquid separation, etc., can solve the problems of material super-hydrophobicity disappearance, achieve good UV resistance, high separation efficiency, and strong environmental adaptability Effect

Pending Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the simple construction of dopamine nano-surfaces or the addition of additional nanoparticles to realize the construction of micro-nano structures, in both cases, the loaded nanoparticles are easily damaged by external forces, resulting in the disappearance of the superhydrophobic properties of the material, such as Chinese patent CN106807338A

Method used

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  • Super-hydrophobic polyurethane sponge as well as preparation method and application thereof
  • Super-hydrophobic polyurethane sponge as well as preparation method and application thereof
  • Super-hydrophobic polyurethane sponge as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Step 1: Add 0.3 g of lauric acid and 15 mL of ethanol into the reactor, add 7.5 g of montmorillonite after the lauric acid is dissolved, and ultrasonically disperse the montmorillonite for 20 minutes to form a suspension.

[0074] Step 2, the reactor was placed in an oil bath with a condensing reflux device, the temperature of the oil bath was 110°C, and the reaction was carried out under magnetic stirring for 2 hours, and the stirring was continued to room temperature after stopping the heating.

[0075] In step 3, the suspension in the reactor was poured onto a glass slide, and after the solvent evaporated, it was placed in a vacuum drying oven at 130° C. for 2 hours. When the temperature drops to room temperature, the sample on the glass slide is removed with a blade, ground and pulverized, and the long-chain carboxylic acid modified montmorillonite can be prepared.

[0076] Step 4, add 7g of methyltrimethoxysilane, 34mL of ethanol, 16mL of deionized water and 0.095m...

Embodiment 2

[0080] Step 1: Add 0.38g of stearic acid and 15mL of ethanol into the reactor, add 7.5g of montmorillonite after the stearic acid is dissolved, and ultrasonically disperse the montmorillonite for 25 minutes to form a suspension.

[0081] Step 2: The reactor was placed in an oil bath with a condensing reflux device, the temperature of the oil bath was 120°C, and the reaction was carried out under magnetic stirring for 2.5 hours. After stopping the heating, the stirring was continued to room temperature.

[0082] In step 3, the suspension in the reactor was poured onto a glass slide, and after the solvent was volatilized, it was placed in a vacuum oven at 130° C. for 2.5 hours and baked. When the temperature drops to room temperature, the sample on the glass slide is removed with a blade, ground and pulverized, and the long-chain carboxylic acid modified montmorillonite can be prepared.

[0083] Step 4, add 7.5g of methyltriethoxysilane, 34mL of ethanol, 16mL of deionized water ...

Embodiment 3

[0087] Step 1: Add 0.45 g of heptadecanoic acid and 15 mL of ethanol into the reactor, add 7.5 g of montmorillonite after the heptadecanoic acid is dissolved, and ultrasonically disperse the montmorillonite for 30 minutes to form a suspension.

[0088] Step 2: The reactor was placed in an oil bath with a condensing reflux device, the temperature of the oil bath was 130° C., and the reaction was carried out under magnetic stirring for 3 hours. After stopping the heating, the stirring was continued to room temperature.

[0089] In step 3, the suspension in the reactor was poured onto a glass slide, and after the solvent was volatilized, it was placed in a vacuum oven at 130° C. for 3 hours. When the temperature drops to room temperature, the sample on the glass slide is removed with a blade, ground and pulverized, and the long-chain carboxylic acid modified montmorillonite can be prepared.

[0090] Step 4, add 8g of dimethyldiethoxysilane, 35mL of ethanol, 15mL of deionized water ...

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Abstract

The invention provides a super-hydrophobic polyurethane sponge as well as a preparation method and application thereof. The preparation method comprises the following steps: modifying cheap and easily available montmorillonite serving as a raw material with long-chain carboxylic acid and silane to obtain a suspension of a super-hydrophobic material, and immersing polyurethane sponge modified by dopamine hydrochloride into the suspension to obtain the super-hydrophobic polyurethane sponge. The prepared sponge selectively adsorbs an oil phase and can be used in an oil-water separation device to realize oil-water separation, and the separation efficiency is up to 99.6% or above. The sponge prepared by the method is high in environmental adaptability, resistant to friction and corrosion, free of fluorine-containing substances and environment-friendly.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a superhydrophobic polyurethane sponge and its preparation method and application. Background technique [0002] With the improvement of industrialization, petrochemical, metal smelting, papermaking and other industries will produce a large amount of oily wastewater. In recent years, frequent offshore oil spills have also caused serious damage to the ecological environment. The technology of quickly and efficiently collecting floating oil on water surface and realizing oil-water separation has attracted great attention of scientists. [0003] The traditional oil-water separation method is time-consuming and inefficient. The use of adsorbent materials to adsorb oil is an effective oil-water separation method. The use of adsorbent materials to collect oil spills and organic solvents from water is due to its high cost-effectiveness, easy operation, and speed Fast, easy ...

Claims

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Application Information

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IPC IPC(8): C08J9/40B01D17/022C08L75/04
CPCC08J9/40C08J9/405B01D17/0202C08J2375/04Y02A20/204
Inventor 许春梅张天宇徐伟侯丹丹张增丽
Owner CHINA PETROLEUM & CHEM CORP
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