Preparation method and application of a water-soluble amphiphobic modified material

A modified material and water-soluble technology, applied in antifouling/underwater coatings, biocide-containing paints, latex paints, etc., can solve the volatile atmosphere pollution of organic solutions, weakening of modification effects, loss of amphiphobic properties, etc. problem, achieve the effect of reducing engineering cost, enhancing product adaptability and low cost

Active Publication Date: 2021-07-30
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of this kind of coating material not only increases the cost due to the additional coating process, but also because the amphiphobic material only exists on the surface layer, it is extremely vulnerable to external effects such as friction and damage during service, and eventually loses the amphiphobic property.
At the same time, most amphobic modified raw materials currently on the market have poor water solubility (generally hydrophobic), and when mixed with environmentally friendly water-based coatings, water-oil two-phase separation is often prone to occur, resulting in weakening of the final modification effect, thus It affects its performance; the compatibility with water-based paints can be improved by using organic solvents, but this method immediately leads to the use of a large number of organic solutions and volatile atmosphere pollution, which is not conducive to environmental protection

Method used

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  • Preparation method and application of a water-soluble amphiphobic modified material
  • Preparation method and application of a water-soluble amphiphobic modified material
  • Preparation method and application of a water-soluble amphiphobic modified material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Modification process based on amphiphobic polymer

[0029] The preparation method of water-soluble amphiphobic modified material is as follows:

[0030] (1) Evenly mix 1g of amphiphobic fluorosilane raw material with 30ml of absolute ethanol to obtain a transparent solution;

[0031] (2) Take 80ml of deionized water to dissolve 50g of fatty alcohol polyoxyethylene ether, and add 1.5g of glacial acetic acid;

[0032] (3) Put the above two solutions in a reaction kettle and stir at 80°C for 2 hours;

[0033] (4) After the reaction is completed, cool to room temperature for later use, and the desired stable water-soluble modified material can be obtained.

[0034] figure 1 The comparison results of the solubility in water of the fluorosilane raw material and the prepared modified amphiphobic material in this example are shown. in figure 1 (a) The phenomenon after adding water to fluorosilane, such as figure 1 As shown in (a), obvious delamination occurs af...

Embodiment 2

[0037] Example 2: Modification process based on a single hydrophobic raw material and a single oleophobic raw material

[0038] The preparation method of water-soluble amphiphobic modified material is as follows:

[0039] (1) Add 3.5 g of silicone oil (with hydrophobic and lipophilic properties) into 10 ml of butanol, and stir at 40°C for 1 h to obtain a homogeneous solution;

[0040] (2) Add 1.5 ml of perfluoroheptanoic acid (hydrophilic and oleophobic) into 10 ml of absolute ethanol, stir at 60°C for 0.5 h to dissolve;

[0041] (3) After being stabilized, put the above two solutions in a reactor for stirring and mixing, add 1.2 ml of polyacrylamide solution and 0.5 ml of silane coupling agent dropwise, and stir at 80°C for 1 h;

[0042] (4) After the reaction is completed, cool to room temperature for later use, and the desired stable water-soluble modified material can be obtained.

Embodiment 3

[0043] Example 3: Modification process based on hydrophobic nanoparticles and a single oleophobic raw material

[0044] The preparation method of water-soluble amphiphobic modified material is as follows:

[0045] (1) Take 1.2 g of silicone oil-modified silica powder (silicone oil content 10%), add it to 20 ml of ethanol solution, mix and stir to obtain a suspension;

[0046] (2) Mix 0.5 g of perfluoroheptanoic acid with 22 ml of isopropanol evenly, and add 0.3 g of polyethyleneimine and 0.6 g of polyvinylpyrrolidone to obtain a stable dispersion;

[0047] (3) Mix the above two solutions into the reactor, add 1.8 ml (0.5 mol / L) hydrofluoric acid dropwise, and heat at 60°C for 1.5 h;

[0048] (4) The required stable water-soluble modified material can be obtained after natural cooling to room temperature.

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Abstract

The invention provides a preparation method and application of a water-soluble amphobic modified material. The material is mainly formed by the hybridization of an amphobic component and a colloidal network. The specific components mainly include: a solvent, an amphobic component, a network body, As a modifier, a stable water-soluble amphiphobic modified material can be obtained through solution mixing and reaction. The invention has the advantages of simple process, low price, strong adaptability, etc., and the raw materials are environmentally friendly and non-toxic to human health. At the same time, the prepared Water-soluble amphiphobic modified materials can be mixed with water in any proportion. Adding them to latex paint, finish paint and other raw materials can make the material exhibit properties such as hydrophobic and oil-repellent, high strength, scrub resistance, and stain resistance. It can be applied to water-based Architectural coatings, surface protection, oil-water separation, clothing decoration, outer layer protection of electronic products, etc.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a preparation method and application technology of a novel water-soluble amphiphobic modified material. Background technique [0002] Amphiphobic (that is, hydrophobic and oleophobic) refers to the property that a material exhibits a non-wetting state for both water and oil. When the amphiphobic material is in contact with water or oil, it often exhibits a large contact angle (>90°) on the surface, and even when the material is placed obliquely, the water and oil droplets can roll. Amphiphobic materials have great application value, in self-cleaning (lotus leaf effect), fluid drag reduction, anti-corrosion, anti-(mold) bacteria, anti-fog, anti-icing, oil-water separation, house interior wall decoration, clothing decoration, It is widely used in the protection of the outer layer of electronic products and the waterproofing of water conservancy projects. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/02C09D5/16C09D7/62C09D7/63C09D7/65
CPCC09D5/024C09D5/1687
Inventor 张宗涛韩志恒苗壮陈德良高彦峰
Owner ZHENGZHOU UNIV
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