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Graphene/chlorinated polypropylene modified melamine foam oil-absorbing material and preparation method thereof

A technology of chlorinated polypropylene and melamine, applied in chemical instruments and methods, separation methods, liquid separation, etc., to achieve the effects of improved hydrophobicity, larger elongation at break, and improved tensile capacity

Active Publication Date: 2021-05-04
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: based on the above problems, the present invention provides a room temperature impregnated modified melamine foam to prepare a melamine foam with high hydrophobicity, not easy to break under external force pulling, good reusability, and high oil absorption

Method used

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  • Graphene/chlorinated polypropylene modified melamine foam oil-absorbing material and preparation method thereof
  • Graphene/chlorinated polypropylene modified melamine foam oil-absorbing material and preparation method thereof
  • Graphene/chlorinated polypropylene modified melamine foam oil-absorbing material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Dissolve chlorinated polypropylene in toluene at room temperature to prepare a solution of a certain concentration, then add a certain amount of graphene nanosheets to it, and disperse with ultrasonic waves for 30 minutes to obtain a stably dispersed graphene / chlorinated polypropylene dispersion. Then immerse the melamine foam into the graphene / chlorinated polypropylene dispersion liquid, ultrasonically disperse it for 30 minutes, take out the melamine foam, and dry it to a constant weight to obtain a modified melamine foam oil-absorbing material. The chlorinated polypropylene accounted for 1% by mass of toluene; the mass fraction of graphene nanosheets accounted for toluene was 0.5%.

[0025] figure 1 It can be seen that the melamine foam sinks to the bottom of the water, and the modified melamine foam oil-absorbing material obtained in Example 1 floats on the water surface. When the modified melamine foam oil-absorbing material is pressed into the water, there is a ph...

Embodiment 2

[0027] Dissolve chlorinated polypropylene in toluene at room temperature to prepare a solution of a certain concentration, then add a certain amount of graphene nanosheets to it, and disperse with ultrasonic waves for 30 minutes to obtain a stably dispersed graphene / chlorinated polypropylene dispersion. The melamine foam was immersed in the graphene / chlorinated polypropylene dispersion liquid, and after ultrasonic dispersion for 30 minutes, the melamine foam was taken out, the solvent was removed, and dried to constant weight to obtain the modified melamine foam oil-absorbing material. Chlorinated polypropylene accounted for 1% by mass of toluene. The mass fraction of graphene nanosheets in toluene is 0.1%.

[0028] figure 2 The scanning electron micrograph of the surface of the modified melamine foam oil-absorbing material prepared in Example 2. It can be seen from (a) (b) that the unmodified melamine foam oil-absorbing material has a three-dimensional network structure. ...

Embodiment 3

[0030] Dissolve chlorinated polypropylene in toluene at room temperature to prepare a solution of a certain concentration, then add a certain amount of graphene nanosheets to it, and disperse with ultrasonic waves for 30 minutes to obtain a stably dispersed graphene / chlorinated polypropylene dispersion. The melamine foam was immersed in the graphene / chlorinated polypropylene dispersion liquid, and after ultrasonic dispersion for 30 minutes, the melamine foam was taken out, the solvent was removed, and dried to constant weight to obtain the modified melamine foam oil-absorbing material. The chlorinated polypropylene accounted for 2% by mass of toluene; the mass fraction of graphene nanosheets accounted for toluene was 0.1%.

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Abstract

The invention belongs to the technical field of oil-absorbing materials and environmental protection, and in particular relates to a hydrophobically modified melamine foam oil-absorbing material and a preparation method thereof. The preparation method comprises the steps of: dissolving chlorinated polypropylene in toluene or xylene at room temperature to prepare solution; then Graphene is dispersed in this solution, obtains the graphene dispersion liquid of stable dispersion through ultrasonic; Then melamine foam is soaked in the graphene dispersion liquid, ultrasonic 15-60 minute, takes out melamine foam, dry to constant weight , to obtain modified melamine foam. In the present invention, the melamine foam with a three-dimensional network structure inside is selected as the matrix, which has strong absorption capacity; the melamine foam does not need to be pretreated before modification; the foam modification process is carried out at room temperature, and the modification process is a one-step method, and the process is simple; After modification, the hydrophobicity and lipophilicity are greatly improved; the strength and toughness of the modified foam are improved, and the tensile capacity is enhanced, which is convenient for recycling.

Description

technical field [0001] The invention belongs to the technical field of oil-absorbing materials and environmental protection, and in particular relates to a graphene / chlorinated polypropylene modified melamine foam oil-absorbing material and a preparation method thereof. Background technique [0002] In recent years, oil and chemical solvent leakage accidents on the water surface have occurred frequently, and these water pollutions have caused serious impacts on the ecological environment. There are various physical, chemical and biological methods that can be used to remove oil from water. Among them, absorbing and separating floating oil in water by physical methods is an extremely efficient and low-cost way to deal with oil pollution. Some traditional adsorbents include perlite, zeolite, wool fiber, activated carbon, vermiculite, clay and diatomaceous earth, etc. However, these adsorbents have disadvantages such as low absorption capacity, poor oil-water selectivity and p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/42B01D17/022C08L61/28C08L23/28
CPCB01D17/0202C08J9/42C08J2361/28C08J2423/28C08K3/042
Inventor 乔长宇戴天任淑英向玉玲任强汪称宇
Owner CHANGZHOU UNIV
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