Fluorocarbon-modified super-hydrophobic material and preparation method thereof

A carbon fluoride and super-hydrophobic technology, applied in the field of polymer materials, can solve the problems of loss of super-hydrophobicity, easy to be damaged by external force, poor super-hydrophobic surface strength and durability, etc., achieving remarkable effect, simple processing method and good application foreground effect

Inactive Publication Date: 2012-03-21
WENGFU (GRP) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its practical application has been subject to many restrictions, and there has been no practical progress
[0004] Most of the preparation methods for superhydrophobic surfaces reported so far require special equipment and expensive fluorosilicon compounds, which are not suitable for the preparation of large-area superhydrophobic surface coatings.
From the perspective of practical application, the strength and durability of the current superhydrophobic surface are poor, which limits the application of this surface in many occasions. The microstructure of the surface is also easily damaged by external forces due to poor mechanical strength, resulting in the loss of superhydrophobicity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] ① Put the silicone rubber and vulcanizing agent tert-butyl perbenzoate on a two-roll mill at a temperature of 20°C for 5 minutes, and place the premixed rubber for later use; the mass fraction of tert-butyl perbenzoate is 0.5% ;

[0023] ② Fluorination of carbon material powdered activated carbon: prepare a mixed gas of fluorine gas and nitrogen gas with a fluorine gas concentration of 1%; dry the carbon material in the reactor at 50°C for 10 hours in vacuum, continuously fill with nitrogen gas, and vacuumize To ensure that there is no oxygen before the reaction; introduce the mixed gas of fluorine and nitrogen into the reactor, the fluorination temperature is 100°C, and the treatment time is 3h. Materials; the gas extracted after the reaction is passed into alkaline water for treatment;

[0024] ③ Extrude the fluorocarbon material, premixed rubber, polypropylene and stearic acid additives with a twin-screw extruder at a temperature of 200°C and a speed of 100r / min; th...

Embodiment 2

[0029] ① The silicone rubber and vulcanizing agent TMTD were milled for 5 minutes at a temperature of 20°C on a two-roll mill, and the premixed rubber obtained was placed for later use; the mass fraction of TMTD was 1.0%;

[0030] ② Fluorination of powdered carbon black of carbon material: prepare a mixed gas of fluorine gas and nitrogen gas with a fluorine gas concentration of 10%; dry the carbon material in the reactor at 50°C for 10 hours in vacuum, continuously fill with nitrogen gas, pump Vacuum to ensure that there is no oxygen before the reaction; introduce the mixed gas of fluorine and nitrogen into the reactor, the fluorination temperature is 10°C, and the treatment time is 5h. Carbon material; the gas extracted after the reaction is passed into alkaline water for treatment;

[0031] ③ Extrude the fluorocarbon material, premixed rubber, polypropylene and magnesium stearate additives with a twin-screw extruder at a temperature of 200°C and a speed of 100r / min; the fluo...

Embodiment 3

[0036] ① The silicone rubber and vulcanizing agent PDM were milled for 10 minutes on a double-roll mill at a temperature of 20°C, and the premixed rubber obtained was placed for later use; the mass fraction of the vulcanizing agent was 2.0%;

[0037] ② The carbon material coke Fluorination: prepare a mixed gas of fluorine and nitrogen with a fluorine concentration of 10%; dry the carbon material in the reactor at 50°C for 10 hours in vacuum, continuously fill nitrogen, and vacuumize to ensure that there is no carbon dioxide before the reaction. Oxygen; the mixed gas of fluorine and nitrogen is introduced into the reactor, the fluorination temperature is -25°C, the treatment time is 10h, after the reaction is completed, vacuum and nitrogen are changed 10 times, and the carbon fluoride material is obtained after the reaction; The gas is passed into alkaline water for treatment;

[0038] ③ Extrude the fluorocarbon material, premixed rubber, polypropylene and zinc stearate additi...

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Abstract

The invention discloses a fluorocarbon-modified super-hydrophobic material, which is prepared from silicon rubber, a vulcanizing agent, a fluorocarbon material, polypropylene and an aid serving as raw materials, wherein the static contact angles of the raw materials are respectively greater than 150 degrees, and the drift angles are respectively smaller than 10 degrees; the vulcanizing agent is one or more of TMTD (Tetramethylthiuram Disulfide), PDM (N,N'-m-Phenylenedimaleimide), t-butyl perbenzoate and tertiary capryl peroxyester; the fluorocarbon material is prepared by fluorating a carbon material; the carbon material is one or more of carbon black, active carbon, coke, a carbon nanotube and graphene; and the aid is one or more of stearic acid, magnesium stearate and zinc stearate. A preparation method of the fluorocarbon-modified super-hydrophobic material comprises the following steps of: (1) smelting a premix compound; (2) fluorating a carbon material; (3) extruding and pelletizing; (4), performing hot pressing and cold pressing; and (5) grinding and removing scraps. The super-hydrophobic material has a remarkable super-hydrophobic effect, a simple processing method and a good application prospect. Moreover, the inside and the surface of a product substrate are provided with the same component, so that a needed super-hydrophobic surface can be formed by grinding once again when the surface is damaged.

Description

technical field [0001] The invention relates to applied materials, in particular to superhydrophobic materials, and in particular to a polymer material with a superhydrophobic function on the surface. Background technique [0002] Due to the very small contact area between the superhydrophobic surface and water droplets, and the water droplets are easy to roll off the surface, the superhydrophobic surface not only has the function of self-cleaning, but also has anti-current conduction, anti-corrosion, waterproof, and anti-fog. , anti-mildew, anti-snow, anti-frost, anti-adhesion, anti-pollution and other functions, so it has a wide range of application prospects in the fields of construction, clothing and textiles, liquid transportation, biomedicine, daily necessities and packaging, transportation tools, and microscopic analysis. [0003] Although the superhydrophobic phenomenon has been paid attention to for a long time, and the preparation methods are emerging in an endless...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L83/04C08K13/06C08K9/02C08K3/04C08K7/00C09K3/18B29B7/56B29B9/06B29B13/06B29C43/22B29C43/58
Inventor 杨先金王江平高磊杨三可陈冠龙解田周涛
Owner WENGFU (GRP) CO LTD
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