Preparation method of super-hydrophobic super-oleophylic sponge

A super-lipophilic and super-hydrophobic technology is applied in the field of preparation of super-hydrophobic and super-oleophilic sponges, which can solve the problems of unpublished research on the lipophilic properties of coating materials and the inability to recycle them, achieve excellent separation ability, and reduce processing time. Process, the effect of good compression resistance

Inactive Publication Date: 2014-10-08
东莞市腾崴塑胶制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the flaky crystalline material obtained by the method used in this patent is relatively brittle. If the sponge is directly modified, it cannot be recycled. Moreover, the patent does not disclose the research on the lipophilic properties of its coating material and its application in the field of oil-water separation.

Method used

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  • Preparation method of super-hydrophobic super-oleophylic sponge
  • Preparation method of super-hydrophobic super-oleophylic sponge
  • Preparation method of super-hydrophobic super-oleophylic sponge

Examples

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Embodiment 1

[0043] Add 0.5 g of 50 nanometer silicon dioxide to 50 ml of an ethanol solution of octaalkyltrichlorosilane (silane: ethanol = 1:100, mass ratio), ultrasonically disperse for 15 min, place in the refrigerator for 2 days, take it out and centrifuge, and use Rinse and wash with ethanol 3 times, obtain modified silica after drying, and place in a desiccator for later use. Set the density to 0.1kg / m 3 Put the polyester sponge into ethanol, ultrasonically clean it for 10 minutes, and place it in a 45-degree oven for heat treatment for 24 hours. Using ethanol as a solvent, configure 1 mg / mL modified silica solution A obtained above, and configure 2 wt% octadecyltriethoxysilane solution B. After immersing the polyester sponge in solution A for 3 seconds, take it out of a 45-degree oven and heat-treat it for 3 minutes, immerse it in solution B for 3 seconds, leave it at room temperature for 12 hours, and heat-treat it in a 45-degree oven for 24 hours. The water contact angle of the ...

Embodiment 2

[0045] Add 0.5 g of 50 nanometer silicon dioxide to 50 ml of an ethanol solution of octaalkyltrichlorosilane (silane: ethanol = 1:300, mass ratio), ultrasonically disperse for 15 min, place in the refrigerator for 2 days, take it out and centrifuge, and use Rinse and wash with ethanol 3 times, obtain modified silica after drying, and place in a desiccator for later use. Set the density to 0.3kg / m 3 Put the polyester sponge into ethanol, ultrasonically clean it for 10 minutes, and place it in a 45-degree oven for heat treatment for 24 hours. Using ethanol as a solvent, configure 1 mg / mL modified silica solution A obtained above, and configure 2 wt% octadecyltriethoxysilane solution B. After immersing the above sponge in solution A for 3 seconds, take it out of a 45-degree oven for heat treatment for 10 minutes, immerse it in solution B for 3 seconds, take it out, leave it at room temperature for 12 hours, and heat it in a 45-degree oven for 24 hours. The water contact angle of...

Embodiment 3

[0047] Add 0.5 g of 50 nanometer silicon dioxide to 50 ml of an ethanol solution of octaalkyltrichlorosilane (silane: ethanol = 1:500, mass ratio), ultrasonically disperse for 15 min, place in the refrigerator for 2 days, take it out and centrifuge, and use Rinse and wash with ethanol 3 times, obtain modified silica after drying, and place in a desiccator for later use. Set the density to 0.8kg / m 3 Put the polyester sponge into ethanol, ultrasonically clean it for 10 minutes, and place it in a 45-degree oven for heat treatment for 24 hours. Using ethanol as a solvent, configure 1 mg / mL L modified silica solution A, and configure 2 wt% octadecyltriethoxysilane solution B. After immersing the above-mentioned polyester sponge in solution A for 3 seconds, take it out of a 45-degree oven and heat-treat it for 5 minutes, immerse it in solution B for 3 seconds, take it out, leave it at room temperature for 12 hours, and heat-treat it in a 45-degree oven for 24 hours. About 92 degre...

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Abstract

The invention provides a preparation method of super-hydrophobic super-oleophylic sponge. The preparation method mainly comprises the steps of (1) carrying out physical and chemical pretreatment on the sponge material; (2) respectively dip-coating a nanometer material and a long carbon chain alkyl silane material on the pretreated sponge material; and (3) carrying out an environment-friendly post-treatment process to obtain the super-hydrophobic super-oleophylic sponge. The preparation method is economical, environment-friendly, simple and efficient, and the prepared functional sponge material not only has good compression resistance, but also has excellent capability of separating oil or organic solvent from water, and has good adsorptive selectivity to oily liquid, which is higher than 97.5%.

Description

(1) Technical field [0001] The invention relates to a method for preparing a superhydrophobic and superoleophilic sponge. The sponge prepared by the method can be applied to the separation of oil or organic solvents from water. (2) Background technology [0002] With the rapid development of the oil industry and the continuous emergence of oil spill accidents, the natural environment and human existence are seriously endangered. Traditional oil-water separation processes, such as gravity separation, combustion, etc., are less efficient processes. When using zeolite, clay, wood, activated carbon and other adsorption materials for oil-water separation or oily liquid adsorption, the separation selectivity and efficiency are low. For example, tetrachloroethane leaked in Hangzhou on May 18, 2014. Activated carbon was used to absorb tetrachloroethane at the scene, causing the water source 1.5 kilometers away from the accident site to be polluted. Therefore, the realization of ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C08J9/36
Inventor 柯清平姜鹏金杨新
Owner 东莞市腾崴塑胶制品有限公司
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