Synthesizing and finishing method of environment-friendly fluoride-free hydrophobic coating liquid

A synthesis method and coating solution technology, applied in the direction of liquid-repelling fibers, fiber treatment, textiles and papermaking, etc., can solve problems such as difficult large-scale industrial production, easy fall-off of surface nanoparticles, and human health effects, etc., to achieve Good hydrophobicity and oil-water separation performance, wide applicability of raw materials, excellent wear resistance

Inactive Publication Date: 2017-09-05
SUZHOU RONGLYU NANO SCI & TECHOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, on such a superhydrophobic substrate, the surface nanoparticles are easy to fall off, which will have an impact on human health.
In addition, commonly used construction methods include hydrothermal method, electrospinning method, plasma etching method, and laser femtosecond etching method. However, these methods either require complex processes or expensive instruments, and are difficult to apply on a large scale. Industrial production

Method used

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  • Synthesizing and finishing method of environment-friendly fluoride-free hydrophobic coating liquid
  • Synthesizing and finishing method of environment-friendly fluoride-free hydrophobic coating liquid
  • Synthesizing and finishing method of environment-friendly fluoride-free hydrophobic coating liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This implementation case shows the synthesis and finishing method of an environmentally friendly fluorine-free hydrophobic coating solution to prepare a superhydrophobic substrate according to the following steps:

[0050] Step 1: Prepare hydrophobic coating liquid emulsion

[0051] Dissolve 1g of PDMS in 30ml of THF and magnetically stir for 30 minutes to make it evenly dispersed, then drop 70ml of water into the above solution under ultrasonic vibration and continue ultrasonic oscillation for 30 minutes to prepare a stable hydrophobic coating liquid emulsion.

[0052] Step 2: Preparation of superhydrophobic substrate by dipping method

[0053] Soak the cotton fabric in the above-mentioned hydrophobic coating liquid emulsion for 30 minutes, take it out and dry it in an oven to obtain a superhydrophobic cotton fabric.

[0054] For the morphology and structure of the superhydrophobic cotton fabric (superhydrophobic substrate) prepared in this example, please refer to ...

Embodiment 2

[0056] This implementation case demonstrates an environmentally friendly fluorine-free hydrophobic coating solution and a synthesis and finishing method to prepare a superhydrophobic substrate according to the following steps:

[0057] Step 1: Prepare hydrophobic coating liquid emulsion

[0058] Dissolve 1g of PDMS in 10ml of THF and magnetically stir for 30 minutes to make it evenly dispersed, then drop 90ml of water into the above solution under ultrasonic vibration and continue ultrasonic oscillation for 30 minutes to prepare a stable hydrophobic coating liquid emulsion;

[0059] Step 2: Preparation of superhydrophobic substrate by dipping method

[0060] Soak the cotton fabric in the above-mentioned hydrophobic coating liquid emulsion for 60 minutes, take it out and dry it in an oven to obtain a superhydrophobic cotton fabric.

[0061] For the morphology and structure of the superhydrophobic cotton fabric (superhydrophobic substrate) prepared in this example, please refer...

Embodiment 3

[0063] This implementation case shows the synthesis and finishing method of an environmentally friendly fluorine-free hydrophobic coating solution to prepare a superhydrophobic substrate according to the following steps:

[0064] Step 1: Prepare hydrophobic coating liquid emulsion

[0065] Dissolve 1g of PDMS in 30ml of THF and stir magnetically for 30 minutes to make it evenly dispersed, then drop 70ml of water into the above solution under ultrasonic vibration and continue ultrasonic oscillation for 30 minutes to prepare a stable hydrophobic coating liquid emulsion;

[0066] Step 2: Preparation of superhydrophobic substrate by dipping method

[0067] Soak the colored garment in the above-mentioned hydrophobic coating liquid emulsion for 30 minutes, take it out, and dry it in an oven to obtain a superhydrophobic colored fabric.

[0068] For the morphology and structure of the superhydrophobic substrate prepared in this example, please refer to Image 6 , Image 6 It is an ...

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Abstract

The invention discloses a method for synthesizing and finishing an environment-friendly fluorine-free hydrophobic coating solution. Firstly, a stable hydrophobic coating solution emulsion is prepared; and a transparent super-hydrophobic finishing effect can be realized on the surface of a substrate by a dipping method. The method is not only simple in process, low in energy cost, low in raw material cost, and environmentally friendly, but also can be applied to various material substrates. The obtained product has good wear resistance, soaping resistance, acid and alkali salt resistance, and can be directly applied on a large scale. Industrial production and marketing.

Description

technical field [0001] The invention relates to a synthesis and finishing method of an environment-friendly fluorine-free hydrophobic coating solution. Background technique [0002] Hydrophobic phenomenon, as a common wetting phenomenon, has long been paid attention to and studied by people. As early as 1805, Thomas Young proposed Young's equation about interfacial tension and wetting performance. The discovery of the lotus leaf effect in 1997 brought people's research on superhydrophobic surfaces into a new era. The so-called superhydrophobic surface refers to the surface where the contact angle between water droplets and the interface is greater than 150° and the rolling angle is less than 10°. At present, the preparation of superhydrophobic surfaces mainly goes through the following steps: (1) constructing micro-nano-scale rough structures on the surface (2) modifying low surface energy substances on the surface. Among them, how to construct the micro-nano rough structu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/643D06M101/06
CPCD06M15/643D06M2101/06D06M2200/12
Inventor 赖跃坤高寿伟董秀丽李煜炜黄剑莹
Owner SUZHOU RONGLYU NANO SCI & TECHOGY
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