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Preparation method of extrusion resistant, fire preventing and super hydrophobic sponge

A technology of superhydrophobic sponge and extrusion resistance, which is applied in the field of synthesizing new oil-absorbing superhydrophobic sponge, which can solve the problems of large-scale difficulty of new oil-absorbing materials, and achieve easy large-scale production, simple synthesis method, low price and easy availability Effect

Active Publication Date: 2014-07-30
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the technical problem that it is very difficult to scale up the existing new oil-absorbing materials, which limits its practical application, and provides a kind of extrusion-resistant, fire-proof and superhydrophobic sponge with low cost, simple synthesis method and easy large-scale production. Preparation

Method used

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  • Preparation method of extrusion resistant, fire preventing and super hydrophobic sponge
  • Preparation method of extrusion resistant, fire preventing and super hydrophobic sponge
  • Preparation method of extrusion resistant, fire preventing and super hydrophobic sponge

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preparation example Construction

[0029] A preparation method of extrusion-resistant, fireproof and superhydrophobic sponge, specifically comprising the following steps:

[0030] Step (1), soak the melamine resin sponge in an alkaline buffer solution with a pH value of 7-14, add dopamine hydrochloride, dopamine polymerizes on the surface of the melamine resin sponge, react for 10-60 hours, and then use deionized washing with water to obtain polydopamine-coated melamine resin sponge; the concentration of dopamine hydrochloride is 0.06 g / L-3.2 g / L.

[0031]Step (2), soak the polydopamine-coated melamine resin sponge prepared in step (1) in an alkaline ethanol solution with a pH value of 7-14, add mercapto fluorinated long-chain alkanes or mercapto long-chain alkanes, and react 1-24 hours, then washed with ethanol and allowed to dry. Wherein, the melamine resin sponge has open pores with a porosity of 99.8%-60%. The polydopamine is produced by polymerization of dopamine hydrochloride under alkaline conditions. ...

Embodiment 1

[0033] (1) Preparation of polydopamine-coated melamine resin sponge

[0034] Soak the pre-cut melamine resin sponge in 500ml of alkaline buffer solution with a pH value of 8, then add 1.6g of dopamine hydrochloride, and stir or shake evenly for 10 hours. When the reaction time is up, take it out, then wash it three times with deionized water, and let it dry.

[0035] (2) Modification of polydopamine-coated melamine resin sponge

[0036] Soak the polydopamine-coated melamine resin sponge in an alkaline ethanol solution with a pH value of 8.5 containing 2 g / L of mercaptofluoroalkanes (6 carbons), and stir or shake evenly for 24 hours. After reaching the reaction time, take it out, wash it twice with ethanol, and then dry it to obtain the extrusion-resistant, fireproof and superhydrophobic sponge. The prepared material is referred to as material 1.

Embodiment 2

[0038] (1) Preparation of polydopamine-coated melamine resin sponge

[0039] Soak the pre-cut melamine resin sponge in 500ml of alkaline buffer solution with a pH value of 8, then add 1.6g of dopamine hydrochloride, and stir or shake evenly for 10 hours. When the reaction time is up, take it out, then wash it three times with deionized water, and let it dry.

[0040] (2) Modification of polydopamine-coated melamine resin sponge

[0041] Soak the polydopamine-coated melamine resin sponge in an alkaline ethanol solution with a pH value of 8.5 containing 2 g / L of mercaptofluoroalkane (30 carbons), and stir or shake it evenly for 24 hours. After reaching the reaction time, take it out, wash it twice with ethanol, and then dry it to obtain the extrusion-resistant, fireproof and superhydrophobic sponge. The prepared material is referred to as material 2.

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Abstract

The invention relates to a preparation method of extrusion resistant, fire preventing and super hydrophobic sponge, solves the technical problem that practical application of oil absorbing materials in the prior art is limited for the reason that large scale production of the oil absorbing materials is very difficult. The preparation method comprises the following steps: coating the surface of melamine resin sponge with poly dopamine, and then modifying the surface of melamine resin sponge with a sulfydryl fluoro long-chain alkane or sulfydryl long-chain alkane. The extrusion resistant, fire preventing and super hydrophobic sponge is prepared by a simple and green synthetic method, the used raw materials are cheap and easy to get, and the synthetic method is simple. The prepared material has the advantages of good super hydrophobic property, good fire preventing effect, good mechanical properties and easy large scale production.

Description

technical field [0001] The invention relates to a preparation method of an extrusion-resistant, fireproof and superhydrophobic sponge, in particular to a method for synthesizing a novel oil-absorbing superhydrophobic sponge by using a cheap porous melamine resin sponge as a substrate and adopting a gentle method. Background technique [0002] Oil-absorbing (organic matter) materials are essential to protect the environment and maintain water quality. Especially with the development of modern industry, frequent oil and various organic solvent leakage accidents have a catastrophic impact on the environment. Moreover, petroleum and many organic solvents are flammable, which bring safety hazards such as fire and explosion, and pose a huge threat to the environment and the safety of human life and property. [0003] Traditional oil-absorbing materials include inorganic materials, natural organic materials, and organic synthetic materials, which often have low selectivity and poo...

Claims

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Application Information

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IPC IPC(8): C08J7/16C08J7/12C08L61/28C08G73/02
Inventor 艾可龙阮长平逯乐慧
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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