Preparation method of flame-retardant superhydrophobic sponge with photothermal effect and magnetic driving function

A technology of superhydrophobic sponge and photothermal effect, which is applied in the field of preparation of superhydrophobic sponge with photothermal effect and magnetically driven flame retardant, can solve the problems of flammability safety hazards of sponge materials, cumbersome operation steps, complex synthesis process and other problems, and achieve excellent Oil-water separation ability, simple process and excellent effect

Inactive Publication Date: 2019-07-12
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] This kind of superhydrophobic and superoleophilic sponge with high selectivity has attracted extensive attention, but the recovery of sponge materials and the flammability of sponge materials after absorbing oil pollution in large-area oily pollution treatment are great challenges.
Chinese patents 201710983136.2 and 201410341581.5 disclose the use of magnetic materials to prepare superhydrophobic sponges, which can be recovered through magnetic response, but the modification process is complicated, the operation steps are cumbersome, and the flammability of the sponge material after absorbing oil is a huge safety hazard
Chinese patent 201410086762.8 reports a new type of fire-resistant superhydrophobic sponge, but the synthesis process is complicated, and the recovery of a large amount of sponge material itself is also a huge challenge

Method used

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  • Preparation method of flame-retardant superhydrophobic sponge with photothermal effect and magnetic driving function
  • Preparation method of flame-retardant superhydrophobic sponge with photothermal effect and magnetic driving function
  • Preparation method of flame-retardant superhydrophobic sponge with photothermal effect and magnetic driving function

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preparation example Construction

[0026] The method for preparing a flame-retardant superhydrophobic sponge with photothermal effect and magnetic drive according to an embodiment of the present invention includes the following steps:

[0027] Step 10) Pretreating the melamine sponge: immerse the melamine sponge in deionized water, take it out to dry after ultrasonic cleaning, then immerse it in an organic solvent for ultrasonic cleaning, and dry to obtain a pretreated melamine sponge.

[0028] Preferably, the porosity of the melamine sponge is 98-99.5 %. The high porosity of the melamine sponge allows the sponge to absorb more oil. In step 10), the pretreatment cleans off the dust and the like on the surface of the sponge to prevent pollutants from clogging the sponge holes and prevent the modification and oil absorption performance from being affected.

[0029] Step 20) Preparation of nano-magnetic particles and silicone resin (hereinafter referred to as PDMS) treatment solution: Add PDMS prepolymer into organic so...

Embodiment 1

[0040] The whole melamine sponge with a porosity of 98% is immersed in deionized water, ultrasonically cleaned, and taken out to dry, then immersed in ethanol for ultrasonic cleaning, and dried to obtain a pretreated melamine sponge.

[0041] Take 0.1g Sylgard 184 prepolymer and add it to 80mL acetone / ethyl acetate, and magnetically stir for 10min, then add 0.01g curing agent, and stir for 10min to make it evenly dispersed; then under mechanical stirring and ultrasonic dispersion, 5g60nmFe 2 0 3 Add 3.5g of 100nm iron particles into the PDMS resin solution, stir and ultrasonic for 30min to prepare magnetic particles and PDMS treatment solution.

[0042] Soak the pretreated melamine sponge in the magnetic particles and PDMS treatment solution, and ultrasonically treat it for 1 min, squeeze the excess treatment solution out of the melamine sponge, and then vacuum dry the soaked melamine sponge at 40°C 3h, that is, a superhydrophobic sponge with photothermal effect and magnetically dri...

Embodiment 2

[0045] The whole melamine sponge with a porosity of 99% is immersed in deionized water, taken out after ultrasonic cleaning, and dried, then immersed in acetone for ultrasonic cleaning, and dried to obtain a pretreated melamine sponge. Take 3g of Sylgard 182 prepolymer and add it to 100mL of heptane, and magnetically stir for 15min, then add 0.3g of curing agent, and stir for 10min to make it evenly dispersed; then under mechanical stirring and ultrasonic dispersion, 0.08g10nmFe 2 O 3 Add 0.04g of 100nm iron particles into the PDMS resin solution, stir and ultrasonic for 60 minutes to prepare nano magnetic particles and PDMS treatment solution.

[0046] Soak the pretreated melamine sponge in the nano magnetic particles and PDMS treatment solution, ultrasonically treat it for 2 minutes, squeeze the excess treatment solution out of the melamine sponge, and then vacuum dry the soaked melamine sponge at 70°C After 10 hours, a superhydrophobic sponge with photothermal effect and magnet...

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Abstract

The invention discloses a preparation method of flame-retardant superhydrophobic sponge with a photothermal effect and a magnetic driving function. The preparation method comprises the following steps: Step 10) pretreating melamine sponge: immersing the melamine sponge in deionized water, ultrasonically washing the melamine sponge, taking out and drying the melamine sponge, then ultrasonically cleaning the melamine sponge in an organic solvent, and drying the melamine sponge to obtain pretreated melamine sponge; Step 20) preparing nano magnetic particle and PDMS treatment liquid; and Step 30)immersing the pretreated melamine sponge in the nano magnetic particle and PDMS treatment liquid for ultrasonic treatment, squeezing out excessive treatment liquid in the melamine sponge, and then drying the immersed melamine sponge in vacuum to obtain the superhydrophobic sponge. The preparation method can improve the hydrophilic sponge material into high-selectivity superhydrophobic superlipophilic sponge to improve the efficiency of oil-water separation.

Description

Technical field [0001] The invention relates to a preparation method of a flame-retardant superhydrophobic sponge with photothermal effect and magnetic drive. Background technique [0002] With the development of the chemical industry, the demand for offshore crude oil extraction and the transportation of petroleum and chemical solvents has increased. The leakage of crude oil and chemical storage and transportation and the illegal discharge of industries have caused great harm to the ocean and freshwater resources, and It is very difficult to clean up the oil. Traditional separation methods (such as physical adsorption) are not effective because they cannot selectively adsorb oil during the adsorption process, resulting in low oil absorption efficiency. Therefore, super-hydrophobic and super-lipophilic sponges with excellent selectivity have huge application prospects in oil-water separation and surface oil adsorption. [0003] This highly selective super-hydrophobic and super-li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C08J9/36C08L61/28
CPCC08J9/36C08J9/40C08J2361/28
Inventor 姜勇张川刘后涛王小雨杜倩
Owner SOUTHEAST UNIV
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