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Method for preparing efficiently hydrophobic and oil-absorbing sponge with fluorine-containing silane coupling agent as cross-linking agent

A technology of silane coupling agent and oil-absorbing sponge, which is applied in the field of preparation of high-efficiency hydrophobic oil-absorbing sponge, simple and efficient hydrophobic oil-absorbing sponge, can solve the problems of complex preparation process, high cost, low oil absorption rate, etc. The effect of mild conditions and cheap and easy-to-obtain raw materials

Inactive Publication Date: 2017-02-22
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to improve the defects of complicated preparation process, high cost and low oil absorption rate of existing oil-water separation materials, and to provide a method for preparing highly efficient hydrophobic oil-absorbing sponge with fluorine-containing silane coupling agent as crosslinking agent

Method used

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  • Method for preparing efficiently hydrophobic and oil-absorbing sponge with fluorine-containing silane coupling agent as cross-linking agent
  • Method for preparing efficiently hydrophobic and oil-absorbing sponge with fluorine-containing silane coupling agent as cross-linking agent
  • Method for preparing efficiently hydrophobic and oil-absorbing sponge with fluorine-containing silane coupling agent as cross-linking agent

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Add 3 mL of silane coupling agent perfluoropolyether siloxane in isopropanol (10% by mass) dropwise to 50 g of hydroxyl-terminated polydimethylsiloxane emulsion (30% solid), After stirring and mixing evenly, the silicone emulsion immersion solution was prepared; soak the washed and dried porous sponge in the immersion solution, and disperse it ultrasonically for 5 minutes. Cured in a drying oven for 8 h to constant weight, the highly efficient hydrophobic and oil-absorbing sponge was prepared.

Embodiment 2

[0019] Add 3 mL of silane coupling agent perfluoropolyether siloxane in isopropanol (10% by mass) dropwise to 50 g of hydroxyl-terminated polydimethylsiloxane emulsion (30% solid), After stirring and mixing evenly, the silicone emulsion immersion solution was prepared; soak the washed and dried porous sponge in the immersion solution, and disperse it by ultrasonic for 5 min. Cured in a drying oven for 10 hours to constant weight, the highly efficient hydrophobic and oil-absorbing sponge was obtained.

Embodiment 3

[0021] Add 3 mL of silane coupling agent perfluoropolyether siloxane in isopropanol (10% by mass) dropwise to 75 g of hydroxyl-terminated polydimethylsiloxane emulsion (20% solid), After stirring and mixing evenly, the silicone emulsion immersion solution was prepared; soak the washed and dried porous sponge in the immersion solution, and disperse it by ultrasonic for 5 min. Cured in a drying oven for 10 hours to constant weight, the highly efficient hydrophobic and oil-absorbing sponge was obtained.

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Abstract

The invention discloses a method for preparing an efficiently hydrophobic and oil-absorbing sponge with a fluorine-containing silane coupling agent as a cross-linking agent. According to the method, a porous sponge is taken as a base body, an organosilicone hydrophobic layer is formed on the surface of the sponge through simple soaking and curing operations, the original water-absorbing and oil-absorbing amphiphilic sponge becomes a hydrophobic and oil-absorbing selective sponge, and the method is a surface modification method with which the performance of the sponge can be changed simply and efficiently. The original high porosity of the porous sponge is remained due to the organosilicone hydrophobic layer, and efficiently hydrophobic and oil absorbing characteristics are obtained. According to the method, the preparation process is simple, the reaction conditions are mild, raw materials are low in price and easy to obtain, and the prepared sponge has oil-water selective absorption, enables oil and water to be quickly, efficiently and automatically separated, has high oil storage capacity and recycling performance and can be squeezed repeatedly for recovery of oils.

Description

technical field [0001] The invention belongs to the field of functional polymer materials and material surface modification, and relates to the preparation of a simple and efficient hydrophobic oil-absorbing sponge, in particular to a method for preparing a highly efficient hydrophobic and oil-absorbing sponge by using a fluorine-containing silane coupling agent as a crosslinking agent. Background technique [0002] Marine oil spill accidents, industrial sewage discharge and organic solvent leakage have caused permanent damage to the ecological environment and the system. Traditional oil-water separation technologies such as: on-site combustion, filtration, gravity separation and chemical reagent addition are due to their cost. High and limited by little effect, it is imminent to research and develop efficient oil-water separation materials. The rapid development of material surface and interface technology has brought development opportunities for oil-water separation techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/42C08J9/40
CPCC08J9/42C08J9/405C08J2483/06C08J2483/08
Inventor 邓卫星彭锦雯权翼腾邓俊杰徐旭刘远立
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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