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A preparation method of melamine foam oil-absorbing material with improved toughness

A technology of melamine and oil-absorbing material, applied in the fields of oil-absorbing material and environmental protection, can solve problems such as high price and increase cost, and achieve the effects of improving tensile capacity, facilitating recycling and reuse, and improving toughness

Active Publication Date: 2019-10-11
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two modification methods are simple in process, but the high price of silane coupling agent increases the cost of modification, and does not improve the brittle and brittle properties of melamine foam

Method used

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  • A preparation method of melamine foam oil-absorbing material with improved toughness
  • A preparation method of melamine foam oil-absorbing material with improved toughness
  • A preparation method of melamine foam oil-absorbing material with improved toughness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Press the polypropylene into thin slices and cut it into small pieces, put it in toluene and heat it under reflux to dissolve it, then put it into the melamine foam, heat it under reflux and impregnate it for 30 minutes, then take out the melamine foam, remove the toluene solution in it, and put it in a dry box for 120 °C to constant weight. The mass percentage of polypropylene to toluene is 1%, and the mass ratio of polypropylene to melamine foam is 20:1.

[0024] figure 1 (a) It can be seen that the melamine foam sinks to the bottom of the water, and the modified melamine foam obtained in Example 1 floats on the water surface, and the surface of the modified melamine foam is pressed into the water to have a phenomenon similar to a "silver mirror", and the foam is wrapped in water but does not absorb water. figure 1 (b) is the selective absorption test of the modified melamine foam obtained in Example 1 to the oil-water mixture. It can be seen from the figure that the...

Embodiment 2

[0027] Press the polypropylene into thin slices and cut into small pieces, put it in toluene and heat it under reflux to dissolve it, then put it into the melamine foam, heat it under reflux and soak it for 1 hour, then take out the melamine foam, remove the toluene solution in it, and put it in a dry box for 120 °C to constant weight. The mass percentage of polypropylene to toluene is 2%, and the mass ratio of polypropylene to melamine foam is 40:1.

[0028] image 3 The scanning electron micrograph of the surface of the modified melamine foam prepared in Example 2. It can be seen from the figure (a) that the melamine foam still has a three-dimensional network structure, and polypropylene is adsorbed in its skeleton and pores. It can be seen from the figure (b) that the polypropylene adsorbed on the skeleton forms micron and nanoscale small protrusions, which makes the modified melamine foam have hydrophobic and lipophilic properties.

Embodiment 3

[0030] Press the polypropylene into thin slices and cut into small pieces, put it in xylene and heat it under reflux to dissolve it, then put it into the melamine foam, heat it under reflux and impregnate it for 45 minutes, then take out the melamine foam, remove the xylene solution in it, and put it in a dry box Dry at 120°C until constant weight. The mass percentage of polypropylene in xylene is 1.5%, and the mass ratio of polypropylene to melamine foam is 30:1.

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Abstract

The invention relates to a preparation method of a toughness-improved melamine foam oil absorbing material. The preparation method comprises the following steps: pressing polypropylene or polyethylene into slices, cutting the slices into small blocks, putting the small blocks into methylbenzene or xylene, heating and refluxing at 110 DEG C, and dissolving to obtain a methylbenzene or xylene solution of the polypropylene or polyethylene; putting melamine foam into the solution, heating and refluxing at 110 DEG C for 15 to 60 minutes, taking out the melamine foam, removing the solution from the melamine foam, putting the melamine foam into a drying box and drying at 120 DEG C until constant weight to obtain the modified melamine foam. The preparation method has the beneficial effects that the melamine foam with high interior porosity serves as a matrix, so that the modified oil absorbing material has high oil retaining capability; the melamine foam does not need to be pretreated before modification; the toughness of the modified melamine foam is improved, the elongation at break is increased, the tensile capacity is improved, and recycling and reusing are facilitated; the foam modifying process is low in raw material cost and simple in process.

Description

technical field [0001] The invention belongs to the technical field of oil-absorbing materials and environmental protection, and relates to a preparation method of a melamine foam oil-absorbing material with improved toughness. Background technique [0002] In recent years, the oil leakage caused by the rupture of the oil pipeline or the accident of the transport ship, the water resource pollution caused by the discharge of production and domestic oily wastewater has become more and more serious, which has brought serious harm to the environment and ecological system. This kind of oil pollution has strong persistence, wide diffusion range, difficult disposal, and great harm. Therefore, it is an urgent problem to be solved to quickly eliminate and recover the organic chemical substances leaked in the environment and avoid larger-scale pollution. [0003] At present, various measures have been used for oil pollution treatment, mainly in the following ways: degrade marine oil s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/42C08L61/28
Inventor 任强戴天金玄懿刘一凡乔长宇李坚汪称意
Owner CHANGZHOU UNIV
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