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A kind of anti-mechanical shock superhydrophobic rubber and preparation method thereof

A mechanical shock and super-hydrophobic technology, which is applied in the field of mechanical shock-resistant super-hydrophobic rubber and its preparation, can solve the problems of practical application limitations, weak binding force between hydrophobic substances and substrates, and decline in super-hydrophobic performance, so as to achieve easy operation of the process, Excellent superhydrophobic stability and simple process

Active Publication Date: 2021-08-27
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest problem of the superhydrophobic materials prepared by the above method is that the binding force between the hydrophobic substance and the substrate is weak, and the superhydrophobic performance will decrease when exposed to the external environment for a long time, and the practical application is limited. Therefore, it is of great significance to prepare durable superhydrophobic materials.

Method used

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  • A kind of anti-mechanical shock superhydrophobic rubber and preparation method thereof

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preparation example Construction

[0027] The preparation method of a kind of anti-mechanical shock superhydrophobic rubber of the present invention, at first take butyl rubber (IIR) and ethylene vinyl acetate (EVA) as matrix, in double crosslinking agent dicumyl peroxide (DCP) and sulfur ( S) and the foaming agent azodicarbonamide (AC), the porous rubber block material is obtained through the rubber mixing, milling, and vulcanization processes, and then the rubber skin is removed and the surface is polished with sandpaper to obtain a super Hydrophobic rubber material. Specific steps are as follows:

[0028] Preparation of S1, IIR / EVA rubber

[0029] 40-70 parts by weight of IIR and 30-60 parts by weight of EVA are used as the matrix, 15-30 parts by weight of white carbon black and 3-6 parts by weight of paraffin are used as fillers, and 0.2-0.7 parts by weight of diisopropyl peroxide Benzene and 0.4 to 0.7 parts by weight of sulfur are used as crosslinking agents, 5 to 15 parts by weight of zinc oxide and 1 ...

Embodiment 1

[0035] step 1

[0036] 70 parts by weight of butyl rubber (IIR) and 30 parts by weight of ethylene vinyl acetate (EVA) as a matrix, 15 parts by weight of white carbon black and 5 parts by weight of paraffin as fillers, 0.4 parts by weight of diisoperoxide The sulfur of propylbenzene and 0.6 weight part is as crosslinking agent, the zinc oxide of 5 weight parts and the stearic acid of 3 weight parts are as foaming aid, the azodicarbonamide of 2 weight parts is as blowing agent, at temperature Mix evenly in an internal mixer at 80°C; then process it into a 12mm thick rubber compound by adjusting the open mixer. Finally, the IIR / EVA compound was vulcanized in a vulcanizer at 170°C for 450s to make it cross-linked and formed, and cooled at room temperature to obtain a porous rubber material.

[0037] step 2

[0038] Remove the rubber skin and grind the rubber surface 100 times with 600 mesh sandpaper to obtain superhydrophobic rubber. Its surface contact angle is 159.5 °, after...

Embodiment 2

[0040] step 1

[0041]60 parts by weight of butyl rubber (IIR) and 40 parts by weight of ethylene vinyl acetate (EVA) as a matrix, 25 parts by weight of white carbon black and 3 parts by weight of paraffin as fillers, 0.5 parts by weight of diisoperoxide The sulfur of propylbenzene and 0.7 weight part is as crosslinking agent, the zinc oxide of 8 weight parts and the stearic acid of 5 weight parts are as foaming aid, the azodicarbonamide of 2.5 weight parts is as blowing agent, at temperature Mix evenly in an internal mixer at 90°C; then process it into an 8mm thick rubber compound by adjusting the open mixer. Finally, the IIR / EVA compound was vulcanized in a vulcanizer at 165°C for 450s to make it cross-linked and formed, and cooled at room temperature to obtain a porous rubber material.

[0042] step 2

[0043] Remove the rubber skin and grind the rubber surface 350 times with 500 mesh sandpaper to obtain superhydrophobic rubber. Its surface contact angle is 160.4°, and a...

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Abstract

The invention discloses a mechanical shock-resistant superhydrophobic rubber and a preparation method thereof. The butyl rubber and ethylene vinyl acetate are used as the matrix, and the double cross-linking agent dicumyl peroxide and sulfur and the foaming agent azodimethazine are used. Under the synergistic effect of amides, the porous rubber block material is obtained through rubber mixing, milling, and vulcanization processes, and then the rubber skin is removed and the surface is polished with sandpaper to obtain a superhydrophobic rubber material. The process of the invention is simple and easy to operate, and can be produced in a large area. The superhydrophobic rubber can still maintain superhydrophobic performance under repeated mechanical impacts; and has good superhydrophobic stability in acids, alkalis, salts, and solvents.

Description

technical field [0001] The invention belongs to the technical field of functional rubber preparation, and in particular relates to a mechanical shock-resistant superhydrophobic rubber and a preparation method thereof. Background technique [0002] The superhydrophobic surface has special wettability, that is, the contact angle of water droplets on its surface is greater than 150°, and it is easy to roll on it. In the process of rolling, the water droplets will take away the dirt on the surface, which is the "lotus leaf self-cleaning effect". Due to their excellent non-stick properties, superhydrophobic materials can be used in various fields such as self-cleaning, oil-water separation, metal anti-corrosion, anti-icing, anti-fog, etc., so they are widely used in industrial production, medical treatment, military products and daily life. [0003] The key technologies for preparing superhydrophobic surfaces are the construction of micro-nano rough structures and the modificati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08L23/08C08K13/02C08K3/36C08K3/22C08K3/06C08K5/09C08K5/14C08J9/10
CPCC08J9/0023C08J9/0061C08J9/0066C08J9/0095C08J9/103C08J2203/04C08J2309/02C08J2423/08C08K3/06C08K3/36C08K5/09C08K5/14C08K13/02C08K2003/2296
Inventor 薛朝华王慧迪姬占有
Owner SHAANXI UNIV OF SCI & TECH
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