A kind of magnetic refractory oil-absorbing porous silicone rubber material and its preparation method and application

A rubber material, porous silicon technology, applied in separation methods, chemical instruments and methods, and other chemical processes, etc., can solve problems such as being unsuitable for large-scale preparation and use, leakage of petroleum and organic solvents, and reduced adsorption and separation capabilities. Good hydrophobicity and oil absorption, good fire resistance, harm reduction effect

Active Publication Date: 2021-06-29
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of industrialization, the leakage of oil and organic solvents occurs frequently, which not only brings huge economic losses, but also is accompanied by huge environmental pollution
Traditional leak handling methods are inefficient and cost a lot of manpower and financial resources
In recent years, a large number of high-efficiency oil-absorbing materials have appeared, such as: cellulose aerogel, graphene aerogel, inorganic nano-film, etc., but due to its complicated preparation process, it is not suitable for large-scale preparation.
The Chinese patent with the publication number CN106519284A discloses a new type of porous silicone rubber that can be used for oil-water separation. A porous hydrophobic silicone rubber material is prepared by curing silicone rubber and NaCl, which can realize continuous separation and recovery of the oil phase, and improve oil pollution. Separation efficiency, but like most oil-absorbing materials, the adsorption and separation capacity may decrease after long-term use, and the later recovery process is troublesome and expensive
At the same time, because the leaked oil and organic solvents are easy to burn and explode, ordinary oil-absorbing materials do not have strong fire resistance. In some dangerous areas that are not suitable for personnel to work, it is necessary to find a fire-resistant oil-absorbing material.

Method used

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  • A kind of magnetic refractory oil-absorbing porous silicone rubber material and its preparation method and application
  • A kind of magnetic refractory oil-absorbing porous silicone rubber material and its preparation method and application
  • A kind of magnetic refractory oil-absorbing porous silicone rubber material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0031] A preparation method of a magnetic refractory oil-absorbing porous silicone rubber material, comprising the steps of:

[0032] (1) Add 20 mmol of Zn(NO 3 ) 2 ·6H 2 O and 40 mmol of Fe(NO 3 ) 3 9H 2 Dissolve O in distilled water, adjust the pH to 12 with 5 mol / L sodium hydroxide, then stir in a water bath at 60°C for 1 hour to obtain a mixed solution, filter the mixed solution with suction, wash with distilled water for several times, and place in an oven at 60°C Drying in medium temperature for 3 hours to obtain the precursor, and finally calcining at 400°C for 4 hours to obtain powdered zinc ferrite (ZFO) nanoparticles;

[0033] (2) Add 36g of sodium chloride particles and 0.4g of zinc ferrite nanoparticles to 4g of polydimethylsiloxane prepolymer, stir and mix evenly, then add 0.4g of curing agent, then mix evenly and place at 200°C After curing for 1 hour, soak the sample cooled to room temperature in boiling water at 95°C for 24 hours to remove sodium chloride...

Embodiment 2

[0041] A preparation method of a magnetic refractory oil-absorbing porous silicone rubber material, comprising the steps of:

[0042] (1) Add 20 mmol of Zn(NO 3 ) 2 ·6H 2 O and 40 mmol of Fe(NO 3 ) 3 9H 2 Dissolve O in distilled water, adjust the pH to 12 with 5 mol / L sodium hydroxide, then stir in a water bath at 70°C for 2 hours to obtain a mixed solution, filter the mixed solution with suction, wash several times with distilled water, and place in an oven at 50°C Drying in medium temperature for 1h to obtain the precursor, and finally calcining at 380°C for 6h to obtain powdered zinc ferrite (ZFO) nanoparticles;

[0043] (2) Add 30g of sodium chloride particles and 0.45g of zinc ferrite nanoparticles to 4g of polydimethylsiloxane prepolymer, stir and mix evenly, then add 0.36g of curing agent, then mix evenly and place at 180°C After curing for 1.5h, soak the sample cooled to room temperature in boiling water at 80°C for 12h to remove sodium chloride particles, and fi...

Embodiment 3

[0045] A preparation method of a magnetic refractory oil-absorbing porous silicone rubber material, comprising the steps of:

[0046] (1) Add 20 mmol of Zn(NO 3 ) 2 ·6H 2 O and 40 mmol of Fe(NO 3 ) 3 9H 2 Dissolve O in distilled water, adjust the pH to 12 with 5 mol / L sodium hydroxide, then stir in a water bath at 80°C for 3 hours to obtain a mixed solution, filter the mixed solution with suction, wash with distilled water for several times, and place in a 60°C oven Dry in medium for 2 hours to obtain the precursor, and finally calcined at 400°C for 3 hours to obtain powdered zinc ferrite (ZFO) nanoparticles;

[0047] (2) Add 28g of sodium chloride particles and 0.42g of zinc ferrite nanoparticles to 4g of polydimethylsiloxane prepolymer, stir and mix evenly, then add 0.35g of curing agent, then mix evenly and place at 200°C After curing for 2 hours, soak the sample cooled to room temperature in boiling water at 80°C for 24 hours to remove sodium chloride particles, and ...

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Abstract

The invention belongs to the technical field of oil-absorbing materials, and specifically relates to a magnetic refractory oil-absorbing porous silicon rubber material and its preparation method and application. The invention first mixes soluble salts of zinc and soluble iron salts and calcines them to prepare zinc ferrite nanoparticles. Then the sodium chloride particles and zinc ferrite nanoparticles are solidified to obtain a magnetic, refractory porous silicone rubber material. The invention adopts a simple and green synthesis method to prepare a fast magnetic response, fire-resistant and recyclable hydrophobic porous silicon rubber material, the adopted raw materials are cheap and easy to obtain, and the synthesis method is simple. The prepared material has good hydrophobic properties, good refractory effect, no dripping of burning droplets, and fast magnetic response properties, which can easily realize large-scale production.

Description

technical field [0001] The invention belongs to the technical field of oil-absorbing materials, and in particular relates to a magnetically controllable, recyclable porous silicon rubber material capable of operating in a dangerous environment and simple in synthesis. Background technique [0002] With the rapid development of industrialization, the leakage of petroleum and organic solvents occurs frequently, which not only brings huge economic losses, but also is accompanied by huge environmental pollution. The traditional leakage treatment method is inefficient and consumes a lot of manpower and financial resources. In recent years, a large number of efficient oil-absorbing materials have emerged, such as cellulose aerogels, graphene aerogels, inorganic nano-films, etc., but due to their complicated preparation processes, they are not suitable for large-scale preparation. The Chinese patent with the publication number CN106519284A discloses a new type of porous silicone r...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B01D17/022B01J20/26B01J20/30C08J9/26C08L83/04
CPCB01D17/02B01J20/262C08J9/26C08J2201/0444C08J2383/04
Inventor张霞王肖扬杨广彬张平余
OwnerHENAN UNIVERSITY