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Method for preparing hydrophobic material on basis of polymethylhydrosiloxane

A technology of polymethylhydrogensiloxane and hydrophobic materials, applied in the field of materials, can solve the problems of harsh preparation process and operating environment, complex process, high preparation cost, etc., and achieve the effect of simple preparation method, mild reaction conditions and cost saving

Inactive Publication Date: 2015-01-21
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the preparation methods of superhydrophobic surface include etching method, template method, electrospinning method, chemical vapor deposition, etc., but the above methods have high preparation cost and complicated process, and some require harsh preparation process and operating environment

Method used

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  • Method for preparing hydrophobic material on basis of polymethylhydrosiloxane
  • Method for preparing hydrophobic material on basis of polymethylhydrosiloxane
  • Method for preparing hydrophobic material on basis of polymethylhydrosiloxane

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Experimental program
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Effect test

Embodiment 1

[0038] A kind of preparation method of colloid, described preparation method comprises the steps:

[0039] ①Stir ethylenediamine and tetrahydrofuran at room temperature for 30 minutes, and the concentration of ethylenediamine in tetrahydrofuran is 1.5g / L;

[0040] ② Stir the product obtained in step ① with polymethylhydrogensiloxane at room temperature for 30 minutes, and the mass ratio of polymethylhydrogensiloxane to tetrahydrofuran is 0.005589:1;

[0041] ③ Stir the product obtained in step ② with ethyl orthosilicate at room temperature for 12 hours, and the mass ratio of ethyl orthosilicate to polymethylhydrogensiloxane is 8:1;

[0042] ④ Stir the product obtained in step ③ with deionized water at 600-800 rpm for 3 hours to obtain a colloid. The mass ratio of deionized water to tetrahydrofuran is 0.005618:1.

Embodiment 2

[0044] A kind of preparation method of colloid, described preparation method comprises the steps:

[0045] 1. Sodium hydroxide and absolute ethanol were stirred at room temperature for 30min, and the concentration of the sodium hydroxide in absolute ethanol was 0.8333g / L;

[0046] ② Stir the product obtained in step ① with polymethylhydrogen siloxane at room temperature for 30 minutes, the mass ratio of polymethylhydrogen siloxane to absolute ethanol is 0.006302:1;

[0047] ③ Stir the product obtained in step ② with ethyl orthosilicate at room temperature for 12 hours, and the mass ratio of ethyl orthosilicate to polymethylhydrogensiloxane is 8:1;

[0048] ④ Stir the product obtained in step ③ with deionized water at 600-800 rpm for 3 hours to obtain a colloid. The mass ratio of deionized water to absolute ethanol is 0.006335:1.

Embodiment 3

[0050] A kind of preparation method of colloid, described preparation method comprises the steps:

[0051] ①Stir sodium hydroxide and tetrahydrofuran at room temperature for 30 minutes, and the concentration of sodium hydroxide in tetrahydrofuran is 0.8333g / L;

[0052] ② Stir the product obtained in step ① with polymethylhydrogensiloxane at room temperature for 30 minutes, and the mass ratio of polymethylhydrogensiloxane to tetrahydrofuran is 0.005589:1;

[0053] ③ Stir the product obtained in step ② with methyltrimethoxysilane at room temperature for 12 hours, and the mass ratio of methyltrimethoxysilane to polymethylhydrogensiloxane is 8:1;

[0054] ④ Stir the product obtained in step ③ with deionized water at 600-800 rpm for 3 hours to obtain a colloid. The mass ratio of deionized water to tetrahydrofuran is 0.005618:1.

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Abstract

The invention relates to a method for preparing a hydrophobic material on the basis of polymethylhydrosiloxane and belongs to the field of materials. The method comprises the following steps: (1) after an alkaline catalyst is dissolved in a solvent, adding polymethylhydrosiloxane and mixing uniformly, adding a silicon dioxide precursor and mixing uniformly, adding water and mixing uniformly; and (2) soaking a matrix in a product obtained in the step (1) and drying the matrix. The method has the beneficial effects that polymethylhydrosiloxane with low price is adopted for replacing fluorine-containing silane which is high in price in the prior art, so that the cost is saved; the preparation method is simple, the reaction condition is mild, a complex reaction device is not needed and the preparation method is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for preparing hydrophobic materials based on polymethylhydrogensiloxane, which belongs to the field of materials. Background technique [0002] In recent years, the increasing industrial oily wastewater and frequent crude oil leakage accidents have caused serious environmental and ecological problems. The oil spill in the Gulf of Mexico in 2010 severely damaged the coastline and nearshore ecology, causing incalculable damage to marine animals and plants. In addition to environmental and ecological problems, leaked oil or organic matter is also a huge waste of resources. Combustion, oil boom interception, spraying dispersants, physical adsorption and other methods have been widely used to deal with oil pollution problems. [0003] In comparison, the physical adsorption process based on high-efficiency adsorption materials has the advantages of simple operation, low cost, recovered oil or organic matter can be used con...

Claims

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Application Information

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IPC IPC(8): D06M15/643D06M11/79C08J9/42D21H21/14D21H17/68D21H17/13D21H17/64
Inventor 翟尚儒安庆大郭萍
Owner DALIAN POLYTECHNIC UNIVERSITY
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