CN107287903B - Preparation method of boiling water resistant super-hydrophobic fabric capable of being used for oil-water separation - Google Patents
Preparation method of boiling water resistant super-hydrophobic fabric capable of being used for oil-water separation Download PDFInfo
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- CN107287903B CN107287903B CN201710406510.2A CN201710406510A CN107287903B CN 107287903 B CN107287903 B CN 107287903B CN 201710406510 A CN201710406510 A CN 201710406510A CN 107287903 B CN107287903 B CN 107287903B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/61—Polyamines polyimines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
- D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
- D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
- D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
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Abstract
The invention belongs to the field of preparation of super-hydrophobic materials, and particularly relates to a preparation method of a boiling water resistant super-hydrophobic fabric capable of being used for oil-water separation. The invention comprises the step of preparing the super-hydrophobic fabric by a one-pot method. The super-hydrophobic fabric has good stability, has a contact angle of more than 150 degrees to water and a rolling angle of less than 10 degrees, has good anti-infiltration capacity to common water system liquid in life, and can keep the super-hydrophobic performance for a long time in boiling water. The invention has the advantages of simple preparation process, easily obtained raw materials, no toxicity, environmental protection, low cost and strong stability, is suitable for large-area preparation and application, is suitable for application in daily life, and is also suitable for the fields of oil-water separation and the like.
Description
Technical Field
The invention belongs to the technical field of preparation of super-hydrophobic fabrics, and particularly relates to a method for preparing a stable super-hydrophobic fabric which can resist boiling water and can be used for oil-water separation.
Background
The super-hydrophobic phenomenon exists widely in nature, such as lotus leaf surface, butterfly wing, water strider leg, etc. The contact angle of the surface of the super-hydrophobic material to water is more than 150 degrees, and the rolling angle is less than 10 degrees. Superhydrophobic materials have many unique and excellent surface properties: the characteristics of hydrophobicity, self-cleaning property, corrosion resistance, anti-icing property, anti-fog property and the like enable the paint to have huge application prospect in a plurality of fields.
The bionic super-hydrophobic fabric has good stability and super-hydrophobicity by utilizing the super-strong adhesiveness of polydopamine and combining super-hydrophobic particles, and has good anti-infiltration capacity for various water system liquids in life, thereby having good anti-fouling capacity. Meanwhile, due to the super-hydrophobicity/super-lipophilicity of the prepared super-hydrophobic fabric, the super-hydrophobic fabric has the capability of oil-water separation.
Disclosure of Invention
The invention aims to provide a simple and convenient method for industrially producing a bionic super-hydrophobic fabric, and solves the problems of complicated preparation steps, high production cost and poor practicability of a super-hydrophobic material. The fabric with good stability and super-hydrophobicity is prepared by a one-pot method, and the obtained super-hydrophobic fabric has good anti-fouling and oil-water separation capabilities.
The technical scheme for realizing the purpose of the invention is as follows: a preparation method of a boiling water resistant super-hydrophobic fabric capable of being used for oil-water separation is characterized by comprising the following steps:
preparing a super-hydrophobic fabric: dissolving 1-10 mL of silicate ester in 20-50 mL of absolute ethanol, forming a transparent solution under magnetic stirring, adding 1-6 mL of hydrochloric acid solution with the concentration of 0.1-0.2M into the solution, adding 0.05-0.1 g of dopamine powder, uniformly stirring, adding 2-4 mL of hydrophobic modifier into the solution, adding 2-6 mL of catalyst, putting the cleaned and dried fabric into the solution, reacting for 24 hours under continuous stirring, cleaning with ethanol and drying after the reaction is finished, thereby completing the preparation of the superhydrophobic fabric.
The silicate is ethyl orthosilicate.
The hydrophobic modifier is hexamethyl disilazane.
The volume ratio of the ethyl orthosilicate to the hexamethyldisilazane is (1:1) - (1: 2).
The catalyst is ammonia water.
The magnetic stirring time is 30 min.
The invention has the beneficial effects that: compared with the prior art, the invention has the advantages that:
1. the process is simple, the raw materials are easy to obtain, and the paint is non-toxic, environment-friendly and low in cost;
2. the prepared super-hydrophobic fabric has good mechanical stability and super-hydrophobicity;
3. the prepared super-hydrophobic fabric has super-hydrophobicity/super-lipophilicity, the contact angle of water is more than 150 degrees, the rolling angle is less than 10 degrees, and the contact angle of oil is about 0 degree;
4. the super-hydrophobic fabric can be used for oil-water separation.
5. The super-hydrophobic fabric has good boiling water resistance because of the adhesion growth of the polydopamine on the fabric fiber and the combination of the super-hydrophobic silicon dioxide and the polydopamine in the preparation process, so that the super-hydrophobic polydopamine-silicon dioxide tightly coats the fabric fiber.
Drawings
FIG. 1: scanning electron micrographs of the superhydrophobic fabric obtained in example 1 and the original fabric, wherein the graph (a) is the morphology of the superhydrophobic fabric at 5000 times and the graph (b) is the morphology of the original fabric at 5000 times.
FIG. 2: the hydrophobic and anti-infiltration to living liquid pictures of the super-hydrophobic fabric obtained in example 1, wherein the picture (a) shows that the super-hydrophobic fabric has a silver mirror phenomenon in water, and the picture (b) shows that the super-hydrophobic fabric has a photo of common liquid in super-hydrophobic living.
FIG. 3: the friction experiment and the hydrophobic property change after friction of the super-hydrophobic fabric obtained in example 1 are shown in the figure (a), the figure (b) is a picture of the friction process, and the figure (c) is a picture of the contact angle change after friction.
FIG. 4: boiling water resistance test of the superhydrophobic fabric obtained in example 1, wherein (a) is a photograph of the superhydrophobic fabric in boiling water, (b) is a photograph of the superhydrophobic fabric showing a silver mirror phenomenon in boiling water, (c) is an optical photograph of water dropping on the fabric after boiling water treatment, and (d) is a photograph of a contact angle of the fabric after boiling water treatment.
FIG. 5: the oil-water separation experiment of the superhydrophobic fabric obtained in example 1, wherein (a) is a picture of an oil-water mixture and a separation device before separation, and (b) is a picture of collected oil and water staying in the device after separation.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples. Various changes or modifications may be effected therein by one skilled in the art and such equivalents are intended to be within the scope of the invention as defined by the claims appended hereto.
Example 1
(1) Preparing a super-hydrophobic fabric: dissolving 2mL of ethyl orthosilicate in 30mL of absolute ethanol, forming a transparent solution I under magnetic stirring, adding 3mL of 0.2M hydrochloric acid solution, adding 0.05g of dopamine powder, stirring uniformly, adding 4mL of hexamethyldisilazane, adding 2mL of concentrated ammonia water and 2mL of water, adding a fabric, reacting at room temperature for 24 hours, taking out the fabric after the reaction is finished, washing with ethanol, and drying to finish the preparation of the super-hydrophobic fabric. The scanning electron microscope picture of the obtained super-hydrophobic fabric is shown in figure 1, and the fabric fibers can be found to be tightly coated.
(2) The prepared super-hydrophobic fabric has the following super-hydrophobic properties: the superhydrophobic fabric has good hydrophobic properties, as shown in fig. 2, wherein (a) is a picture showing a silver mirror phenomenon when immersed in water, and (b) is an optical photograph showing the fabric with resistance to wetting by some liquids commonly used in life.
(3) The prepared super-hydrophobic fabric has the following friction resistance: as shown in figure 3, the fabric still has high superhydrophobic performance after friction test by the friction mode shown in figure (a), and the corresponding contact angle after friction is shown in figure (b).
(4) The boiling water resistance of the prepared super-hydrophobic fabric is as follows: as shown in fig. 4(a), the prepared superhydrophobic fabric was placed in boiling water, and the silver mirror phenomenon shown in fig. 4(b) could be observed, and the fabric still had good superhydrophobic performance after being placed in boiling water for 5 min. Fig. 4(c) is an optical photograph of the anti-wetting of the superhydrophobic fabric after being placed in boiling water for 5min, and fig. 4(d) is a contact angle picture of the superhydrophobic fabric after being placed in boiling water for 5 min.
(5) The prepared super-hydrophobic fabric is applied to oil-water separation: as shown in fig. 5, the optical photograph of the oil-water mixture and the separator before and after separation in (a) and the photograph of the separator after separation in (b) show that the superhydrophobic fabric has selective permeability to oil and water, and oil can pass through the fabric without water, thereby achieving oil-water separation.
Example 2
Preparing a super-hydrophobic fabric: dissolving 10mL of ethyl orthosilicate in 50mL of absolute ethanol, forming a transparent solution I under magnetic stirring, adding 6mL of 0.2M hydrochloric acid solution, adding 0.1g of dopamine powder, stirring uniformly, adding 3mL of hexamethyldisilazane, adding 4mL of concentrated ammonia water and 2mL of water, adding a fabric, reacting at room temperature for 24 hours, taking out the fabric after the reaction is finished, washing with ethanol, and drying to finish the preparation of the super-hydrophobic fabric.
Example 3
Preparing a super-hydrophobic fabric: dissolving 1mL of ethyl orthosilicate in 20mL of absolute ethanol, forming a transparent solution I under magnetic stirring, adding 1mL of 0.1M hydrochloric acid solution, adding 0.05g of dopamine powder, stirring uniformly, adding 2mL of hexamethyldisilazane, adding 2mL of concentrated ammonia water and 2mL of water, adding a fabric, reacting at room temperature for 24 hours, taking out the fabric after the reaction is finished, washing with ethanol, and drying to finish the preparation of the super-hydrophobic fabric.
The invention comprises the step of preparing the super-hydrophobic fabric by a one-pot method. The super-hydrophobic fabric has good stability, has a contact angle of more than 150 degrees to water and a rolling angle of less than 10 degrees, has good anti-infiltration capacity to common water system liquid in life, and can keep the super-hydrophobic performance for a long time in boiling water. The invention has the advantages of simple preparation process, easily obtained raw materials, no toxicity, environmental protection, low cost and strong stability, is suitable for large-area preparation and application, is suitable for application in daily life, and is also suitable for the fields of oil-water separation and the like.
Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.
Claims (3)
1. A preparation method of a boiling water resistant super-hydrophobic fabric capable of being used for oil-water separation is characterized by comprising the following steps:
preparing a super-hydrophobic fabric: dissolving 1-10 mL of ethyl orthosilicate in 20-50 mL of absolute ethanol, forming a transparent solution under magnetic stirring, adding 1-6 mL of hydrochloric acid solution with the concentration of 0.1-0.2M into the solution, adding 0.05-0.1 g of dopamine powder, uniformly stirring, adding 2-4 mL of hexamethyldisilazane into the solution, wherein the volume ratio of ethyl orthosilicate to hexamethyldisilazane is (1:1) - (1:2), adding 2-6 mL of catalyst, putting the cleaned and dried fabric into the solution, reacting for 24 hours under continuous stirring, cleaning with ethanol after the reaction is finished, and drying to finish the preparation of the superhydrophobic fabric.
2. The method for preparing the boiling water resistant super-hydrophobic fabric for oil-water separation according to claim 1, wherein the method comprises the following steps: the catalyst is ammonia water.
3. The method for preparing the boiling water resistant super-hydrophobic fabric for oil-water separation according to claim 1, wherein the method comprises the following steps: the magnetic stirring time is 30 min.
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| CN201710406510.2A CN107287903B (en) | 2017-06-02 | 2017-06-02 | Preparation method of boiling water resistant super-hydrophobic fabric capable of being used for oil-water separation |
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| CN201710406510.2A CN107287903B (en) | 2017-06-02 | 2017-06-02 | Preparation method of boiling water resistant super-hydrophobic fabric capable of being used for oil-water separation |
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| CN107287903B true CN107287903B (en) | 2020-05-19 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108607520A (en) * | 2018-04-18 | 2018-10-02 | 浙江工业大学 | Super-hydrophobic sponge and preparation method and application thereof |
| CN110029490B (en) * | 2019-03-25 | 2021-12-07 | 台州科金中高技术转移有限公司 | Preparation method of antifouling corrosion-resistant tablecloth material |
| CN110670344B (en) * | 2019-10-16 | 2020-07-17 | 西北大学 | Super-hydrophobic flexible fabric with photocatalysis and oil-water separation performances and preparation method and application thereof |
| CN111764170B (en) * | 2020-06-22 | 2023-03-17 | 武汉纺织大学 | Waterproof moisture-permeable film and preparation method thereof |
| CN113980347B (en) * | 2021-09-09 | 2023-02-24 | 盐城工学院 | Preparation method of super-hydrophobic super-oleophylic polymer sponge material |
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| CN105062360A (en) * | 2015-08-19 | 2015-11-18 | 中国科学院兰州化学物理研究所 | Transparent super-hydrophobic paint and application thereof |
| CN105419627A (en) * | 2015-11-30 | 2016-03-23 | 浙江大学 | Super-oleophobic coating and preparation method thereof |
| CN105821689A (en) * | 2016-03-30 | 2016-08-03 | 中国科学院兰州化学物理研究所 | Method for preparing super-hydrophobic recycled paper |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105062360A (en) * | 2015-08-19 | 2015-11-18 | 中国科学院兰州化学物理研究所 | Transparent super-hydrophobic paint and application thereof |
| CN105419627A (en) * | 2015-11-30 | 2016-03-23 | 浙江大学 | Super-oleophobic coating and preparation method thereof |
| CN105821689A (en) * | 2016-03-30 | 2016-08-03 | 中国科学院兰州化学物理研究所 | Method for preparing super-hydrophobic recycled paper |
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