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Method for preparing reusable oil-absorbing sponge

The technology of oil-absorbing sponge and melamine sponge is applied in the field of preparation of hydrophobic and lipophilic melamine sponge, which can solve the problems of complicated operation and high cost, and achieve the effects of simple operation, good elasticity and continuous oil absorption improvement.

Inactive Publication Date: 2016-03-16
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Generally speaking, the reported preparation methods of oil-absorbing materials are generally more complicated in operation and higher in cost.
At present, the research on oil-absorbing sponge or oil-absorbing foam mainly focuses on polyurethane materials, and there are few reports on using melamine sponge as a matrix to prepare oil-absorbing materials.

Method used

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  • Method for preparing reusable oil-absorbing sponge
  • Method for preparing reusable oil-absorbing sponge
  • Method for preparing reusable oil-absorbing sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Containing 40nmSiO 2 Add melamine sponge to the ethanol solution of the particles, SiO 2 The mass ratio of the particle mass to the melamine sponge is 0.8. After stirring for 1 hour, octyltrimethoxysilane with a solution volume fraction of 2% is added dropwise, stirred and reacted for 15 hours, and the solution in the sponge is taken out and squeezed dry, and placed in a vacuum oven to dry to constant weight.

[0031] from figure 1 It can be seen that after the modified melamine sponge is immersed in water, the surface has a phenomenon similar to a "silver mirror". The sponge is wrapped in water droplets but does not absorb water, but it can absorb chloroform that is dyed red by Sudan Red III underwater.

Embodiment 2

[0033] Containing 100nmSiO 2 Add melamine sponge to the ethanol solution of the particles, SiO 2 The mass ratio of the particle mass to the melamine sponge is 5. After stirring for 5 hours, drip vinyltrimethoxysilane with a volume fraction of 20% of the solution, stir and react for 24 hours, take out and squeeze the solution in the sponge, and place it in a vacuum oven to dry to constant weight.

[0034] figure 2 (a) is the scanning electron microscope image of unmodified melamine sponge. It can be seen from the figure that the sponge has a porous three-dimensional network structure. This structure makes the sponge have certain elasticity, and the network holes can also be filled with other substances. , the surface of the sponge skeleton is smooth; (b) is a scanning electron microscope image of a modified melamine sponge, as can be seen from the figure, the sponge still has a porous three-dimensional network structure, and the surface of the skeleton is coated with a small...

Embodiment 3

[0036] Containing 50nmSiO 2 Add melamine sponge to the ethanol solution of the particles, SiO 2 The mass ratio of the particles to the melamine sponge is 4. After stirring for 6 hours, add methyltriethoxysilane with a solution volume fraction of 0.4% dropwise, stir and react for 4 hours, take out and squeeze the solution in the sponge, and dry in a vacuum oven to constant weight.

[0037] from image 3 It can be seen that the modified melamine sponge has a high absorption rate for n-hexane, soybean oil, silicone oil, diesel oil, and carbon tetrachloride.

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Abstract

The invention provides a method for preparing reusable oil-absorbing sponge and belongs to the technical field of selective absorbing materials and environmental protection. The oleophilic and hydrophobic performances of the sponge are improved by material modification. The method comprises the steps of soaking melamine sponge into ethanol solution containing SiO2 nano particles; after the treatment is performed for a period of time, selecting an appropriate silane coupling agent to modify the sponge; drying the sponge until a constant weight, and obtaining the reusable hydrophobic and oleophilic melamine sponge. The modified sponge material manufactured through the method has obvious hydrophobic and oleophilic performances, and oil-water selectivity of the modified sponge material is improved remarkably. The material can float on the water surface and is reusable. The sponge is placed on an oil-water interface and only absorbs oil and does not absorb water, and continuous oil absorption can be performed after a vacuum device is connected. According to the method, the raw material is easy to obtain, the operation is simple, and reaction conditions are mild.

Description

technical field [0001] The invention belongs to the technical field of oil-absorbing materials and environmental protection, and relates to a method for preparing a reusable hydrophobic and lipophilic melamine sponge. Background technique [0002] In recent years, the frequent leakage of crude oil and organic chemicals at home and abroad has brought serious harm to the environment and ecosystem. It is an urgent need to quickly eliminate and recover the organic chemicals leaked in the environment and avoid larger-scale pollution. question. [0003] At present, various measures have been used in oil spill treatment, mainly including the following methods: (1) degrade marine oil spills and oil stains through petroleum hydrocarbon degrading bacteria; (2) in-situ combustion; (3) ) adding chemical treatment agents, such as dispersants, oil collectors, oil coagulants, etc.; (4) physical methods, using oil booms to enclose the oil pollution on the ocean surface, and then collecting...

Claims

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Application Information

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IPC IPC(8): C08J7/12C08J7/00
CPCC08J7/12C08J7/00
Inventor 吴江渝高慧敏陈玉婷杨婉童利文张勇
Owner WUHAN INSTITUTE OF TECHNOLOGY
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