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A kind of fluorine-free superhydrophobic fabric and preparation method thereof

A super-hydrophobic and fabric technology, applied in the field of fabrics, can solve the problems of complex process and difficult industrialization, and achieve the effect of easy industrialization, simple method, and oil-water separation

Active Publication Date: 2022-01-11
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are also some preparation methods of superhydrophobic fabrics without fluorine and particles, but the general process is complicated and difficult to industrialize

Method used

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  • A kind of fluorine-free superhydrophobic fabric and preparation method thereof
  • A kind of fluorine-free superhydrophobic fabric and preparation method thereof
  • A kind of fluorine-free superhydrophobic fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] 1. Preparation of waterborne silicone polyurethane

[0076] Refer to attached figure 1 The synthesizing circuit schematic diagram of, illustrates that the preparation method of organosilicon polyurethane aqueous dispersion is as follows:

[0077] (1) After mixing dihydroxy polydimethylsiloxane (PDMS), 3-methoxy-1,2-propanediol and isophorone diisocyanate (IPDI) at a molar ratio of 10:0.3:42.5 , add a sufficient amount of N,N'-dimethylformamide (DMF) as a solvent.

[0078] (2) Add dimethylol butyric acid (DMBA) and trihydroxypropane (TMP) in the system of step (1), the add-on of dimethylol butyric acid (DMBA) is 3.5%, trihydroxypropane (TMP ) in an amount of 0.25%.

[0079] (3) While stirring at 50°C, add a sufficient amount of dibutyltin dilaurate (DBTDL) dropwise into the above system. After mixing evenly, raise the temperature of the reaction system to 80°C, and measure the temperature in the reaction system after 6 hours of constant temperature reaction. For the ...

Embodiment 2

[0083] 1. Preparation of waterborne silicone polyurethane

[0084] Refer to attached figure 1 The synthesizing circuit schematic diagram of, illustrates that the preparation method of organosilicon polyurethane aqueous dispersion is as follows:

[0085] (1) After mixing dihydroxy polydimethylsiloxane (PDMS), 3-methoxy-1,2-propanediol and isophorone diisocyanate (IPDI) at a molar ratio of 10:8:52.5 , add a sufficient amount of N,N'-dimethylformamide (DMF) as a solvent.

[0086] (2) Add dimethylol butyric acid (DMBA) and trihydroxypropane (TMP) in the system of step (1), the add-on of dimethylol butyric acid (DMBA) is 5.5%, trihydroxypropane (TMP ) in an amount of 1.25%.

[0087] (3) While stirring at 50°C, add a sufficient amount of dibutyltin dilaurate (DBTDL) dropwise into the above system. After mixing evenly, raise the temperature of the reaction system to 80°C, and measure the temperature in the reaction system after 6 hours of constant temperature reaction. For the re...

Embodiment 3

[0091] 1. Preparation of waterborne silicone polyurethane

[0092] Refer to attached figure 1 The synthesizing circuit schematic diagram of, illustrates that the preparation method of organosilicon polyurethane aqueous dispersion is as follows:

[0093] (1) After mixing dihydroxy polydimethylsiloxane (PDMS), 3-methoxy-1,2-propanediol and isophorone diisocyanate (IPDI) at a molar ratio of 10:4:47.5 , add a sufficient amount of N,N'-dimethylformamide (DMF) as a solvent.

[0094] (2) Add dimethylol butyric acid (DMBA) and trihydroxypropane (TMP) in the system of step (1), the add-on of dimethylol butyric acid (DMBA) is 4%, trihydroxypropane (TMP ) in an amount of 0.75%.

[0095] (3) While stirring at 50°C, add a sufficient amount of dibutyltin dilaurate (DBTDL) dropwise into the above system. After mixing evenly, raise the temperature of the reaction system to 80°C, and measure the temperature in the reaction system after 6 hours of constant temperature reaction. For the rema...

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Abstract

The invention discloses a fluorine-free super-hydrophobic fabric and a preparation method thereof. The super-hydrophobic fabric includes a substrate and a coating on the surface of the substrate; wherein, the substrate is an alkalized polyester fabric; and the coating is a water-based silicone polyurethane coating. The preparation method of the super-hydrophobic fabric is obtained by spraying the aqueous silicone polyurethane solution on the alkalized polyester fabric, curing and heat treatment. The invention synthesizes a water-based silicone polyurethane through molecular design, provides low surface energy for the preparation of super-hydrophobic fabrics, and skillfully utilizes alkali treatment to prepare micro-nano structures required by super-hydrophobic fabrics on polyester fabrics. The method for preparing the super-hydrophobic fabric of the present invention is simple, efficient, economical and environment-friendly, can effectively realize oil-water separation, is fluorine-free and particle-free, and is easier to industrialize.

Description

technical field [0001] The invention relates to the technical field of fabrics, in particular to a fluorine-free superhydrophobic fabric and a preparation method thereof. Background technique [0002] In recent years, due to the continuous increase of industrial oily wastewater and the frequent occurrence of oil spill accidents, the potential pollution of oily wastewater to the environment and the impact on human health have attracted the attention of countries all over the world. However, due to low separation efficiency, poor reusability, high operating costs, and complex operating procedures, the current oily wastewater treatment technology still has shortcomings in terms of versatility, usability, and adaptability of oil-water separation. Therefore, efficient separation of oily wastewater treatment has become an urgent global challenge. Recent studies have shown that superhydrophobic surfaces (SFSs) are considered to be a facile and effective method for oil-water separa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022
CPCB01D17/0202
Inventor 毛桃嫣肖润辉郑成吴旭于丹凤余晨
Owner GUANGZHOU UNIVERSITY