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Hydrophobic and oleophobic open-cell foam material and preparation method thereof

An open-cell foam and oleophobic technology, which is applied in the field of open-cell foam materials and their preparation, to achieve the effects of simple operation, environmentally friendly process, and good washability

Active Publication Date: 2016-08-10
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the current single functional characteristic (with hydrophobic function) can no longer meet the needs of people, the present invention proposes a hydrophobic and oil-repellent open-cell foam material and a preparation method thereof. The open-cell foam material of the present invention has firm adsorption , good washability, and the preparation method is simple, fast and easy to operate

Method used

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  • Hydrophobic and oleophobic open-cell foam material and preparation method thereof
  • Hydrophobic and oleophobic open-cell foam material and preparation method thereof
  • Hydrophobic and oleophobic open-cell foam material and preparation method thereof

Examples

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Embodiment 1

[0039] 1) Preparation of graphene oxide modified with fluorine-containing silane coupling agent: Add graphene oxide into ethanol, ultrasonically disperse to prepare a graphene oxide ethanol solution with a concentration of 1mg / mL, and then add ammonia water dropwise to adjust to pH=8.5; Transfer the above solution to a three-necked flask; take heptadecafluorodecyltrimethoxysilane coupling agent and dilute it with a small amount of ethanol, the mass ratio of fluorine-containing silane to graphene oxide is 1:1, and mix under reflux at 60°C The fluorine-containing silane coupling agent diluted with ethanol was added dropwise into the graphene oxide solution, and refluxed for 24 h. Suction filter, wash with ethanol, and use directly or after drying for later use.

[0040] 2) Preparation of polyurethane foam material modified by heptadecafluorodecyltrimethoxysilane coupling agent modified graphene oxide: take 50 ml heptadecafluorodecyltrimethoxysilane coupling agent modified with a...

Embodiment 2

[0044] 1) Preparation of graphene oxide tapes modified with fluorine-containing silane coupling agent: Add graphene oxide tapes into ethanol, ultrasonically disperse to prepare a graphene oxide tape ethanol solution with a concentration of 5 mg / mL, and then add ammonia water dropwise to adjust to pH=9.5; transfer the above solution to a three-necked flask; take a certain amount of heptadecafluorodecyltriethoxysilane coupling agent and dilute it with a small amount of ethanol, the mass ratio of fluorine-containing silane to graphene oxide is 1.5:1 , Add the above-mentioned fluorine-containing silane coupling agent diluted with ethanol dropwise into the graphene oxide solution under reflux and stirring at 60 °C, and reflux for 24 h. Suction filter, wash with ethanol, and use directly or after drying for later use.

[0045] 2) Preparation of heptadecafluorodecyltriethoxysilane coupling agent-modified graphene oxide band-modified polyurethane foam: take 50 ml of heptadecafluorodec...

Embodiment 3

[0049] 1) Preparation of graphene oxide ribbons modified with fluorine-containing silane coupling agent: Add graphene oxide ribbons into ethanol, ultrasonically disperse to prepare graphene oxide ribbon ethanol solution with a concentration of 10 mg / mL, and then add ammonia water dropwise to adjust to pH=10; transfer the above solution to a three-necked flask; take a certain amount of tridecafluorooctyltriethoxysilane coupling agent and dilute it with a small amount of ethanol. The mass ratio of fluorine-containing silane to graphene oxide ribbon is 2: 1. Add the fluorine-containing silane coupling agent diluted with ethanol dropwise into the graphene oxide tape solution at 60 °C under reflux and stirring, and reflux for 24 h. Suction filter, wash with ethanol, and use directly or after drying for later use.

[0050] 2) Preparation of tridecafluorooctyltriethoxysilane coupling agent modified graphene oxide with modified polyurethane foam: take 50 ml of tridecafluorooctyltrieth...

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Abstract

The invention provides a hydrophobic and oleophobic open-cell foam material and a preparation method thereof, belonging to the technical field of functional composite materials. The objective of the invention is to overcome the problem that a single functional characteristic cannot meet demands of people. The hydrophobic and oleophobic open-cell foam material is prepared from polymer foam and fluorine-containing silane coupling agent modified graphene or graphene ribbons, wherein the mass percentage of the polymer foam in the open-cell foam material is 80 to 97%, the mass percentage of the fluorine-containing silane coupling agent modified graphene or graphene ribbons in the open-cell foam material is 3 to 20%, the water contact angle of the open-cell foam material is greater than or equal to 140 DEG, and the contact angle of diesel oil is greater than or equal to 110 DEG. The open-cell foam material is firm in absorption and good in washing fastness; and the preparation method is simple, rapid and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of functional composite materials, and in particular relates to a hydrophobic and oil-repellent open-cell foam material and a preparation method thereof. Background technique [0002] Open-cell materials with three-dimensional network structures such as polymer foam have the functions of sound absorption, heat and humidity resistance, and heat insulation. They are especially suitable for use in environments that require heat insulation, energy saving, and noise reduction. Information and other fields have very important application value. On the other hand, the three-dimensional network pore structure of polymer foam makes it an ideal carrier for the preparation of adsorption materials. However, general polymer foams are amphiphilic materials, which require surface modification. Functional small molecules or polymers are modified onto the surface of three-dimensional carrier materials or particles are used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40
CPCC08J9/40C08J2375/04
Inventor 赵丽吴连斌汤龙程胡丽丽蒋剑雄
Owner HANGZHOU NORMAL UNIVERSITY
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