CN107892759A - A kind of preparation method of the super hydrophobic polyurethane foam oil absorption material of fatty acid modifying - Google Patents

A kind of preparation method of the super hydrophobic polyurethane foam oil absorption material of fatty acid modifying Download PDF

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Publication number
CN107892759A
CN107892759A CN201710973632.XA CN201710973632A CN107892759A CN 107892759 A CN107892759 A CN 107892759A CN 201710973632 A CN201710973632 A CN 201710973632A CN 107892759 A CN107892759 A CN 107892759A
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polyurethane foam
oil
foam
oil absorption
preparation
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CN201710973632.XA
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王锦涛
王宏飞
吕艳
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Suzhou Wuwei Environment Technology Co Ltd
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Suzhou Wuwei Environment Technology Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/36After-treatment
    • C08J9/40Impregnation
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00Materials not provided for elsewhere
    • C09K3/32Materials not provided for elsewhere for absorbing liquids to remove pollution, e.g. oil, gasoline, fat
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04Polyurethanes

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Public Health (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention discloses a kind of preparation method of the super hydrophobic polyurethane foam oil absorption material of fatty acid modifying, it is characterized in that using aliphatic acid and its salt as modifying agent, polyurethane foam skeleton is handled, then handled foam is subjected to thermal activation treatment, obtains super-hydrophobic foam.Oil suction foam prepared by the present invention has super-hydrophobicity, can be selectively adsorbing and separating oil product in water, and oil absorption is up to the decades of times of itself capacity, and adsorbed oil product can be reclaimed by way of mechanical presses.Foam prepared by the present invention has the characteristics of technique is simple, and cost is cheap, better tolerance, fast water-oil separating efficiency high and swelling rate, can be used widely in the field such as oil contaminants removing, chemicals processing, food production and kitchen in water.

Description

A kind of preparation method of the super hydrophobic polyurethane foam oil absorption material of fatty acid modifying
Technical field
The present invention relates to oil absorption material field, and in particular to the super hydrophobic polyurethane bubble simple, inexpensive to a kind of technique The preparation method of foam oil absorption material.
Background technology
In recent years, oily wastewater pollution event frequently occurs, and the pollution to water environment is increasingly severe, exploitation high efficiency oil-water separation Material is always focus of concern.In various water-oil separating materials, super hydrophobic material because of it there is strong water to repel Property, oily compatibility, are expected in water be used widely in terms of the absorption and separation of oil contaminants, cause people greatly to pay close attention to. The preparation method of super hydrophobic surface has sol-gel process, spraying process, method of electrostatic spinning, chemical vapour deposition technique, hydro-thermal method and divided Sub- self-assembly method etc., but the preparation technology of these methods is relatively complicated, cost is high, and would generally be used in preparation process poisonous Solvent, bring new environmental pollution.Therefore, on the premise of high water-oil separating efficiency is ensured, the ring of water-oil separating material is realized Prepared by border friendly, technique is simplified and cost degradation is its key that energy large-scale application is handled in oily pollution conscientiously.Poly- ammonia Ester foam is a kind of high polymer material with unique three-dimensional mesh space structure, because big porosity, good chemistry are steady Qualitative and high resiliency etc., become the excellent carrier of sorbing material preparation.However, due to stronger hydrophily, polyurethane foam Foam is unable to oil contaminants in selective absorption water, therefore, limits its application in water in oil contaminants adsorbing separation.It is existing In foam of polymers super-hydrophobicization technology, someone handles foam of polymers to obtain hydrophobic oleophilic oil using graphene, alkyl silane Material.Although existing method improves the hydrophobicity of foam of polymers, modifying agent is expensive, causes product cost to increase Add, it is therefore desirable to research and develop a kind of method modified polyurethane foam cheap, technique is simple and environmentally-friendly, promote it in sea, river Application in stream and the processing of lake oily pollution.
The content of the invention
It is an object of the present invention to provide the method that a kind of directly modification of aliphatic acid causes polyurethane foam super-hydrophobicization, thus will Aliphatic acid NW-TFT prepares super-hydrophobic oil absorption material, to realize it in oil absorption and profit point to polyurethane foam surface From the application of aspect.
To achieve the above object of the invention, the concrete technical scheme that uses of the present invention for:
A kind of preparation method of the super hydrophobic polyurethane foam oil absorption material of fatty acid modifying, comprises the following steps:By fat Fat acid is added in solvent, and stirring is made into the adipic acid solution that concentration is 0.01-20%;Then polyurethane foam is immersed in fat In acid solution, in 25-65 DEG C of stirring reaction 0.5-20 hour;Finally the polyurethane foam after immersion is heated at 60-120 DEG C 0.5-24 hours are handled, that is, obtain the super hydrophobic polyurethane foam of fatty acid modifying.
Preferably, the average pore size chi of the polyurethane foam is 100-300 μm.On this condition, modified material Hydrophobicity and Oil keeping are good.
Preferably, aliphatic acid includes but is not limited to capric acid, laurate, palmitic acid, myristic acid, palmitic acid, stearic acid, oil Acid.
Preferably, the mass concentration of the aliphatic acid is 0.01-10%.
Preferably, solvent includes but is not limited to methanol, ethanol, butanol, pentanediol, acetone, isopropanol, benzene, chloroform, tetrachloro Change carbon.
Preferably, the control of the mass ratio of polyurethane foam and solvent is in the range of 0.03%-3.0%.
Super-hydrophobic foam obtained by the present invention is applied to separating for water-insoluble organic solvent and oil product and water.
The invention also discloses the super hydrophobic polyurethane foam oil suction material of the fatty acid modifying prepared by above-mentioned preparation method Material.The super hydrophobic polyurethane foam oil absorption material of the fatty acid modifying is up to 45 times to the adsorbance of organic solvent and oil, weight Multiple usability is good, after it is recycled 98 times, still has higher absorption multiplying power;Available in water at oily adsorbing separation Reason, therefore the invention also discloses its application in water-oil separating material.
Compared with prior art, the present invention has advantages below:1. use cheap polyurethane sponge and aliphatic acid As raw material, preparation process only needs immersion and thermal activation, and super-hydrophobic oil absorption material can be obtained using conventional equipment, operates It is extremely simple, other methods are contrasted, cost is greatly lowered;2. the super hydrophobic polyurethane foam has higher oil suction multiplying power, Up to deadweight decades of times;Water repellency and oily compatibility with height, can be rapidly to different water-insoluble organic in water Solvent and oil product carry out selective absorption, so as to realize the effect of water-oil separating;3. the oil absorption material for preparing of the present invention have compared with Low density and higher elasticity, the water surface can be swum in after absorption oil, be the oil of recyclable absorption by simple extruding, and Rear oil suction multiplying power is repeatedly used without being remarkably decreased;4. oil absorption material prepared by the present invention can not only meet oil contaminants in water The demand of cleaning, the fields such as Automobile Service, kitchen, food processing and industrial oily waste water purification can also be applied to.
Brief description of the drawings
Fig. 1 is the stereoscan photograph (SEM) of Stearate Modified polyurethane foam in example 1
Fig. 2 is the stereoscan photograph (SEM) of original polyurethane foam
Fig. 3 is the wettability optical photograph and water contact angle figure of Stearate Modified polyurethane foam in embodiment 1.In figure Display water droplet is not penetrated into foam, spherical in shape in foam surface, and the measured value of contact angle is 152 °.
Fig. 4 is the oil-wet optical photograph of Stearate Modified polyurethane foam in embodiment 1.Show that gasoline contact is original Rapidly permeated into after polyurethane foam in foam.
Fig. 5 is the water droplet contact angle schematic diagram of original polyurethane foam.Water drop contact original polyurethane foam is shown in figure After spread out and penetrate into foam.
Specific embodiment
With reference to embodiment, the present invention will be further described.It is but all the present invention's the invention is not limited in this All any modification, equivalent and improvement done within spirit and principle etc., should be included in the scope of the protection.
Experimental method described in following embodiments, it is conventional method unless otherwise specified;The kit material, such as Without specified otherwise, commercially obtain.
Embodiment 1:
The stearic acid solution that mass concentration is 3% is prepared by solvent of ethanol, then soaks 0.5g polyurethane foams completely Not in the above-mentioned solution of 100mL, sealed reaction vessel, stirred 24 hours at 30 DEG C.Then, modifying agent immersion treatment is crossed Foam is placed in heat-activated 1 hour at 100 DEG C, you can obtains the polyurethane foam oil absorption material with super-hydrophobicity.This implementation Oil suction multiplying power of the super-hydrophobic foam obtained in example to chloroform, gasoline and diesel oil is respectively 41.2,19.6 and 22.6g/g.Scanning Electron micrograph is visible, and the microstructure on the high oil absorption foam framework surface obtained through Stearate Modified occurs significantly to become Change, foam surface is evident that attachment (Fig. 1), and original foam surface is relatively smooth (Fig. 2), it was confirmed that stearic acid The presence of modifying foam surface micronano level structure layer, thus the hydrophobic oleophilic oil of original foam is improved.Oil suction foam has Standby good water repellency and oleophylic performance, water droplet can not penetrate into foam inside, but be held in foam table for a long time with spherical shape Face, water contact angle is up to 152 ° (Fig. 3);And gasoline is dripped and can rapidly permeated into inside it in foam surface, only oil is left on surface Mark (Fig. 4).For unmodified original foam, water droplet can then rapidly permeate into foam inside ° (Fig. 5), thus be selected without profit Selecting property, it is impossible to optionally adsorb oil contaminants in water.
Embodiment 2:
The stearic acid solution that mass concentration is 3% is prepared by solvent of chloroform, then soaks 0.5g polyurethane foams completely Not in the above-mentioned solution of 100mL, sealed reaction vessel, stirred 1 hour at 40 DEG C.Then, modifying agent immersion treatment is crossed Foam is placed in heat-activated 24 hours at 60 DEG C, you can obtains the polyurethane foam oil absorption material with super-hydrophobicity.This implementation Oil suction multiplying power of the super-hydrophobic foam obtained in example to chloroform, gasoline and diesel oil is respectively 44,21.8 and 24.5g/g.
Embodiment 3:
The bay acid solution that mass concentration is 0.5% is prepared by solvent of ethanol, it is then that 0.5g polyurethane foams is complete It is immersed in the above-mentioned solution of 100mL, sealed reaction vessel, is stirred 1 hour at 65 DEG C.Then, by modifying agent immersion treatment mistake Foam be placed in heat-activated 0.5 hour at 100 DEG C, you can obtain with super-hydrophobicity polyurethane foam oil absorption material.This Oil suction multiplying power of the super-hydrophobic foam obtained in embodiment to chloroform, gasoline and diesel oil is respectively 39.5,18.2 and 20.3g/g.
Embodiment 4:
The stearic acid solution that mass concentration is 0.5% is prepared by solvent of ethanol, then soaks 3g polyurethane foams completely Not in the above-mentioned solution of 100mL, sealed reaction vessel, stirred 10 hours at 30 DEG C.Then, modifying agent immersion treatment is crossed Foam is placed in heat-activated 12 hours at 60 DEG C, you can obtains the polyurethane foam oil absorption material with super-hydrophobicity.This implementation Oil suction multiplying power of the super-hydrophobic foam obtained in example to chloroform, gasoline and diesel oil is respectively 44.0,24.5 and 24.8g/g.

Claims (6)

1. the preparation method of the super hydrophobic polyurethane foam oil absorption material of a kind of fatty acid modifying, it is characterised in that including following Step:Aliphatic acid is added in solvent, stirring is made into the adipic acid solution that concentration is 0.01-20%;Then by polyurethane foam It is immersed in adipic acid solution, in 25-65 DEG C of stirring reaction 0.5-20 hour;Finally by the polyurethane foam after immersion in 60- Heat 0.5-24 hours at 120 DEG C, that is, obtain the super hydrophobic polyurethane foam of fatty acid modifying.
2. the preparation method of the super hydrophobic polyurethane foam oil absorption material of fatty acid modifying as claimed in claim 1, its feature exist In polyurethane foam average pore size in 100-600 μ ms.
3. the preparation method of the super hydrophobic polyurethane foam oil absorption material of fatty acid modifying as claimed in claim 1, its feature exist In aliphatic acid be capric acid, laurate, palmitic acid, myristic acid, palmitic acid, stearic acid, oleic acid.
4. the preparation method of the super hydrophobic polyurethane foam oil absorption material of fatty acid modifying according to claim 1, its feature The mass concentration for being the aliphatic acid is 0.01-10%.
5. the preparation method of the super hydrophobic polyurethane foam oil absorption material of fatty acid modifying as claimed in claim 1, its feature exist In solvent be methanol, ethanol, butanol, pentanediol, acetone, isopropanol, benzene, chloroform, carbon tetrachloride.
6. the preparation method of the super hydrophobic polyurethane foam oil absorption material of fatty acid modifying as claimed in claim 1, its feature exist In the control of the mass ratio of polyurethane foam and solvent in the range of 0.03%-3.0%.
CN201710973632.XA 2017-10-19 2017-10-19 A kind of preparation method of the super hydrophobic polyurethane foam oil absorption material of fatty acid modifying Pending CN107892759A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109621923A (en) * 2018-12-13 2019-04-16 沈阳建筑大学 A kind of super-hydrophobic oleophylic sponge material and preparation method thereof and water-oil separating application
CN111363193A (en) * 2020-03-06 2020-07-03 郑州峰泰纳米材料有限公司 Melamine foam
CN112495353A (en) * 2020-10-27 2021-03-16 上海工程技术大学 Integrated device for continuously recovering thin oil film on water surface

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161460A (en) * 1974-11-08 1979-07-17 R. B. Cybernetris (1970) Ltd. Method of enhancing oleophilic and hydrophobic properties of absorbent material
US4237237A (en) * 1977-08-25 1980-12-02 Basf Aktiengesellschaft Hydrophobic polyurethane foams, their manufacture and use
WO2008043545A1 (en) * 2006-10-12 2008-04-17 Arizona Chemical Company Oil absorbing foam
CN102228884A (en) * 2011-06-20 2011-11-02 哈尔滨工业大学 Preparation method and application of super-hydrophobic/super-lipophilic material in oil-water separation field
CN102906145A (en) * 2010-05-27 2013-01-30 巴斯夫欧洲公司 Oil-absorbing polyurethane sponges with good mechanical properties
CN105251240A (en) * 2015-11-17 2016-01-20 中国科学院兰州化学物理研究所 Method for preparing novel super-hydrophobic polyurethane oil-water separation material with no solvent

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161460A (en) * 1974-11-08 1979-07-17 R. B. Cybernetris (1970) Ltd. Method of enhancing oleophilic and hydrophobic properties of absorbent material
US4237237A (en) * 1977-08-25 1980-12-02 Basf Aktiengesellschaft Hydrophobic polyurethane foams, their manufacture and use
WO2008043545A1 (en) * 2006-10-12 2008-04-17 Arizona Chemical Company Oil absorbing foam
CN102906145A (en) * 2010-05-27 2013-01-30 巴斯夫欧洲公司 Oil-absorbing polyurethane sponges with good mechanical properties
CN102228884A (en) * 2011-06-20 2011-11-02 哈尔滨工业大学 Preparation method and application of super-hydrophobic/super-lipophilic material in oil-water separation field
CN105251240A (en) * 2015-11-17 2016-01-20 中国科学院兰州化学物理研究所 Method for preparing novel super-hydrophobic polyurethane oil-water separation material with no solvent

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109621923A (en) * 2018-12-13 2019-04-16 沈阳建筑大学 A kind of super-hydrophobic oleophylic sponge material and preparation method thereof and water-oil separating application
CN111363193A (en) * 2020-03-06 2020-07-03 郑州峰泰纳米材料有限公司 Melamine foam
CN111363193B (en) * 2020-03-06 2022-08-05 郑州峰泰纳米材料有限公司 Melamine foam
CN112495353A (en) * 2020-10-27 2021-03-16 上海工程技术大学 Integrated device for continuously recovering thin oil film on water surface

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