Preparation method of super-hydrophobic graphene/polyurethane sponge

A technology of polyurethane sponge and graphene, applied in the research field of superhydrophobic composite materials, can solve problems such as process resumption

Active Publication Date: 2017-06-09
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation needs to simplify the functionalization and sponge functionalization process of graphene, and the process can be resumed.

Method used

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  • Preparation method of super-hydrophobic graphene/polyurethane sponge
  • Preparation method of super-hydrophobic graphene/polyurethane sponge
  • Preparation method of super-hydrophobic graphene/polyurethane sponge

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preparation example Construction

[0018] A kind of preparation method of superhydrophobic graphene / polyurethane sponge, its flow process is as follows figure 1 , including the following steps:

[0019] (1) Simplified graphite (GO) was added to deionized water, and ultrasonically dispersed for 30 minutes to obtain uniformly dispersed water, and the concentration of simplified graphite in the dispersed water was controlled to 1-5 mg / mL.

[0020] (3) Calculated according to the mass ratio, that is, the ratio of GO: MPS is 0.3:1-30:1, the MPS water is added to the obtained GO dispersion water, stirred for 1 hour, and the mixed water that is fully stirred is moved to the In the kettle, seal the polymer, control the temperature and heat it at 90-100°C for 4-8h, and heat the product at 50°C to obtain a superhydrophobic graphene / polyurethane sponge.

[0021] (4) On the surface of the prepared superhydrophobic graphene / polyurethane sponge, drop deionized water to test the contact angle.

Embodiment 1

[0023] Add 30mg of simplified graphite (GO) into a beaker with 10mL of deionized water, and ultrasonicate for 30min to obtain uniformly dispersed water. Transfer 100 uL of MPS water to the beaker containing GO water and stir for 1 h. Simply transfer the fully stirred mixed water to a reaction kettle, seal the polymer, control the temperature and heat it at 100°C for 8 hours, and vacuum the product at 50°C to obtain a superhydrophobic graphene / polyurethane sponge.

[0024] The Raman spectrogram of the superhydrophobic graphene / polyurethane sponge prepared in above-mentioned embodiment 1, as figure 2 As shown, I D / I G =1.2, indicating that the simplified graphite was reduced to graphene.

[0025] The scanning electron micrograph of the superhydrophobic graphene / polyurethane sponge prepared in above-mentioned embodiment 1, as image 3 As shown, on the surface of the polyurethane sponge, the graphene sheet is evenly covered but can be energized.

[0026] The water contact a...

Embodiment 2

[0028] Add 30mg of simplified graphite (GO) into a beaker with 10mL of deionized water, and ultrasonicate for 30min to obtain uniformly dispersed water. Simply transfer 10 uL of MPS water to the beaker containing GO water and stir for 1 h. Simply move the fully stirred mixed water to a reaction kettle, seal the polymer, control the temperature and heat it at 95°C for 6 hours, and vacuum the product at 50°C to obtain a superhydrophobic graphene / polyurethane sponge.

[0029] The Raman spectrogram of the superhydrophobic graphene / polyurethane sponge prepared in above-mentioned embodiment 2, its I D / I G >1.1, indicating that simplified graphite is reduced to graphene.

[0030] The scanning electron micrograph of the superhydrophobic graphene / polyurethane sponge prepared in the above-mentioned embodiment 2, on the surface of the polyurethane sponge, there is a cap made of energyized graphene sheets.

[0031] The water contact angle figure of the superhydrophobic graphene / polyur...

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Abstract

The invention discloses a preparation method of super-hydrophobic graphene / polyurethane sponge. The preparation method of the super-hydrophobic graphene / polyurethane sponge comprises the following steps: carrying out ultrasonic dispersion on graphene oxide, thus forming a dispersion solution; then adding a (3-sulfhydryl propyl) trimethoxy silane solution, and uniformly mixing after stirring; then after soaking polyurethane sponge into a mixed solution, carrying out sealed reaction, thus obtaining the super-hydrophobic graphene / polyurethane sponge. According to the preparation method disclosed by the invention, super-hydrophobic composite sponge of which a water contact angle is up to 160 degrees is prepared by using (3-sulfhydryl propyl) trimethoxy silane as a super-hydrophobic modifying agent and a reducing agent through hydro-thermal synthesis.

Description

technical field [0001] The invention relates to a preparation method of a superhydrophobic graphene / polyurethane sponge, which belongs to the research field of superhydrophobic composite materials. Background technique [0002] Superhydrophobic materials can be widely used in waterproof coatings, oil pollution treatment, fluid drag reduction, antibacterial and other fields, so superhydrophobic materials have broad application prospects in real production and life. However, there are still many problems to be solved in the preparation process of superhydrophobic composites. On the one hand, although the traditional method of preparing superhydrophobic materials can produce a relatively ideal superhydrophobic structure, the preparation process requires harsh conditions and consumes a lot of energy, making it difficult to apply on a large scale. On the other hand, although superhydrophobic materials can be prepared through some simple processes, their water contact angles are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C08L75/04C08K9/06C08K3/04
Inventor 姜炜周帅谢覃王玉姣刘杰周翔张宁郁榴华钱丹林刘丹阳戴梦杰姜宽李凤生
Owner NANJING UNIV OF SCI & TECH
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