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Organic-inorganic super-hydrophilic and underwater super-lipophobic fabric and preparation method and application thereof

An underwater super-oleophobic and super-hydrophilic technology, applied in the field of super-hydrophilic materials, can solve the problems of cumbersome preparation of super-hydrophilic fabrics, harsh reaction conditions, expensive instruments, etc., and achieve good recyclability and high separation efficiency , the effect of mild conditions

Active Publication Date: 2017-10-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems of cumbersome preparation process of super-hydrophilic fabrics, harsh reaction conditions, need for expensive instruments, use of toxic solvents, etc., and provides an organic-inorganic super-hydrophilic and underwater super-hydrophobic fabric with low cost, environmental protection and easy operation. Oil fabric and its preparation method, the obtained fabric can be used for oil-water separation, has high separation efficiency and good recyclability

Method used

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  • Organic-inorganic super-hydrophilic and underwater super-lipophobic fabric and preparation method and application thereof
  • Organic-inorganic super-hydrophilic and underwater super-lipophobic fabric and preparation method and application thereof
  • Organic-inorganic super-hydrophilic and underwater super-lipophobic fabric and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Add 2.46g tetraethyl orthosilicate, 0.20g (0.50mmol) trimethylolpropane tris(3‐mercaptopropionate) and 0.41g (0.75mmol) polyethylene glycol dimethacrylate with a molecular weight of 550 Make a solution in 3.07g ethanol, soak the polyester fabric in the solution for 1min, take it out and place it in a closed container containing 5g ammonia water and 5g n-butylamine without contacting ammonia water and n-butylamine, put the closed container in an oven And react at a temperature of 45°C for 1.5h to prepare organic-inorganic superhydrophilic and underwater superoleophobic fabrics.

[0033] figure 1 It is the total reflection infrared spectrum measured after soaking the treated fabric under the catalysis of the mixed solution of ammonia water and n-butylamine respectively for 0 min, 10 min, 20 min, 40 min and 60 min. From figure 1 1636 cm corresponding to the C=C double bond can be observed in ‐1 The peak at gradually becomes smaller and finally disappears, which proves t...

Embodiment 2

[0040] Add 2.35g tetraethyl orthosilicate, 0.20g (0.50mmol) trimethylolpropane tris(3‐mercaptopropionate) and 4.5g (0.75mmol) polyethylene glycol dimethacrylate with a molecular weight of 6000 Make a solution in 7.05g ethanol, soak the cotton fabric for 5min, take it out and place it in a closed container with 5g ammonia water and 2.5g n-butylamine without contacting ammonia water and n-butylamine, put the closed container into an oven and After reacting at 30°C for 3 hours, organic and inorganic superhydrophilic and underwater superoleophobic fabrics can be prepared.

[0041] The scanning electron micrographs of organic and inorganic superhydrophilic and underwater superoleophobic fabrics of this embodiment and the process of water droplets reaching 0 ° contact angle are respectively compared with figure 1 and figure 2 Similarly, it shows that the surface of the fabric has a micro-nano rough structure and is super-hydrophilic.

[0042] Table 1 lists the contact angles of u...

Embodiment 3

[0044] Add 5.1g tetraethyl orthosilicate, 0.20g (0.50mmol) trimethylolpropane tris(3‐mercaptopropionate) and 1.5g (0.75mmol) polyethylene glycol dimethacrylate with a molecular weight of 2000 Make a solution in 6.8g ethanol, soak the nylon fabric for 3min, take it out and place it in a closed container with 7.5g ammonia water and 2.5g n-butylamine without contacting ammonia water and n-butylamine, put the closed container into an oven and After reacting at 60°C for 0.5h, organic and inorganic superhydrophilic and underwater superoleophobic fabrics can be prepared.

[0045] The scanning electron micrographs of organic and inorganic superhydrophilic and underwater superoleophobic fabrics of this embodiment and the process of water droplets reaching 0 ° contact angle are respectively compared with figure 1 and figure 2 Similarly, it shows that the surface of the fabric has a micro-nano rough structure and is super-hydrophilic.

[0046] Table 1 lists the contact angles of under...

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Abstract

The invention discloses an organic-inorganic super-hydrophilic and underwater super-lipophobic fabric and a preparation method and application thereof. The preparation method comprises the steps of firstly adding tetraethylortho silicate, apolythiol functional monomer and polyethylene glycol dimethyl acrylate to ethanol to prepare a solution, immersing the fabric into the solution for 1-5min and then taking out the fabric; putting the obtained fabric into a closed container containing ammonia water and a n-butylamine solution, keeping the fabric out of touch with the ammonia water and n-butylamine; and putting the closed container into a drying oven and reacting at 30-60 DEG C for 0.5-3h to prepare the organic-inorganic super-hydrophilic and underwater super-lipophobic fabric. The water contact angle of the prepared fabric can reach 0 degree within 0.36s, the underwater oil contact angle can reach 160 degrees, the fabric can be applied to oil-water separation, the separation efficiency reaches 99.5%, and the fabric has good reusability.

Description

technical field [0001] The invention relates to a superhydrophilic material, in particular to an organic-inorganic superhydrophilic and underwater superoleophobic fabric and its preparation method and application. Background technique [0002] Superhydrophilic generally means that water droplets can spread completely on the surface of the material, so that the contact angle is equal to or close to 0°. At present, superhydrophilic materials have been widely used in self-cleaning, anti-fog, anti-fouling, oil-water separation and other fields. In particular, the superhydrophilic surface is constructed on cheap and easy-to-obtain fabrics to prepare superhydrophilic and underwater superoleophobic fabrics, which can be used for oil-water separation, which is very important for properly dealing with the pollution caused by marine oil spills. role. [0003] There have been many reports on the preparation methods of superhydrophilic fabrics, such as sol-gel method, vapor deposition...

Claims

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Application Information

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IPC IPC(8): D06M11/79D06M15/53B01D17/022D06M101/32D06M101/06D06M101/34D06M101/38
CPCB01D17/0202D06M11/79D06M15/53D06M2101/06D06M2101/32D06M2101/34D06M2101/38D06M2200/11D06M2200/12
Inventor 李红强梁涛曾幸荣赖学军
Owner SOUTH CHINA UNIV OF TECH
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