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A kind of graphene band-modified polymer-based foam material and its preparation method and application

A graphene ribbon, foam material technology, applied in chemical instruments and methods, water/sludge/sewage treatment, adsorbed water/sewage treatment, etc., can solve problems such as difficult adsorption capacity, and achieve good compression-resilience mechanical properties , High oil absorption rate, good reusability

Active Publication Date: 2018-08-21
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem that carbon tubes and nano-carbon fibers are difficult to adsorb to the surface of polymer foam and have a large amount of adsorption when they are used as hydrophobic materials, the invention provides a polymer-based foam material modified with graphene ribbons and a preparation method thereof. Assembled on the surface of polymer foam to prepare superhydrophobic and lipophilic materials, realizing the application of this material in sewage treatment and oil-water separation

Method used

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  • A kind of graphene band-modified polymer-based foam material and its preparation method and application
  • A kind of graphene band-modified polymer-based foam material and its preparation method and application
  • A kind of graphene band-modified polymer-based foam material and its preparation method and application

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Effect test

Embodiment 1

[0028] (1) Configuration of graphene oxide tape aqueous solution: Take the graphene oxide tape viscous solution with a predetermined concentration and dilute it with deionized water to a concentration of 0.8 mg / ml.

[0029] (2) Preparation of polyurethane foam material modified with graphene oxide tape: take 25 ml of graphene oxide tape aqueous solution with a concentration of 0.8 mg / ml, soak 25×25×10 mm polyurethane foam in it, and squeeze and vacuum remove The foam method is to fully soak the foam, then take it out and place it on a copper grid, and blow it to dry.

[0030] (3) Preparation of graphene-modified polyurethane foam material: Take the above-mentioned graphene oxide-modified polyurethane foam material, place it in the upper middle of the reaction kettle, add ammonia water dropwise at the bottom, and place it in an oven at 90 °C for 4 h in an airtight manner. That is, a graphene ribbon-modified polyurethane foam material 1 with a graphene ribbon mass percentage of ...

Embodiment 2

[0034] (1) Configuration of graphene oxide tape aqueous solution: Take the graphene oxide tape viscous solution with a predetermined concentration and dilute it with deionized water to a concentration of 1.1 mg / ml.

[0035] (2) Preparation of polyurethane foam material modified with graphene oxide tape: Take 25 ml of graphene oxide tape water solution with a concentration of 1.1 mg / ml, soak 25×25×10 mm polyurethane foam in it, and squeeze and vacuum remove it. The foam method is to fully soak the foam, then take it out and place it on a copper grid, and blow it to dry.

[0036] (3) Preparation of graphene-modified polyurethane foam material: Take the above-mentioned graphene oxide-modified polyurethane foam material, place it in the upper middle of the reaction kettle, add hydrazine hydrate dropwise at the bottom, and place it in a sealed oven at 90 °C for 3 h. That is, a graphene ribbon-modified polyurethane foam 2 with a graphene ribbon mass percentage of 5% is obtained.

...

Embodiment 3

[0041] (1) Configuration of the aqueous solution of octadecyltrimethoxysilane modified graphene oxide: Take the aqueous solution of octadecyltrimethoxysilane modified graphene oxide with a predetermined concentration and add deionized water to dilute to the concentration The content of octadecyltrimethoxysilane in modified graphene oxide is about 25 wt%.

[0042] (2) Preparation of polyurethane foam material modified with graphene oxide tape: take 35 ml of graphene oxide tape water solution with a concentration of 0.8 mg / ml, soak 25×25×10 mm polyurethane foam in it, and squeeze and vacuum remove it. The foam method is to fully soak the foam, then take it out and place it on a copper grid, and blow it to dry.

[0043] (3) Preparation of graphene-modified polyurethane foam material: The above-mentioned graphene oxide-modified polyurethane foam material was soaked in 50 ml of hydrazine hydrate aqueous solution with a volume ratio of 1:25, and reduced at 80 °C for 3 h. That is, a...

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Abstract

The invention belongs to the technical field of functional composite materials, and provides a graphene ribbon modified polymer-based foam material and a preparation method and application thereof in order to solve the problems that a carbon tube and carbon nanofiber as hydrophobic materials are difficultly adsorbed onto the surface of polymeric foam and the adsorption capacity is high. The water contact angle of the graphene ribbon modified polymer-based foam material is more than or equal to 130 degrees, and the foam material is made of 85-99% by weight of foam and 1-15% by weight of grapheme ribbons. The prepared modified foam has the advantages of good hydrophobicity, high oil absorption rate, good compression-resilience mechanical performance, reuse and the like, the preparation method is simple, quick and easy to operate, and the raw materials are cheap and easy to obtain. The application prospects are great on sewage treatment, oil water separation and other aspects.

Description

technical field [0001] The invention belongs to the technical field of functional composite materials, and in particular relates to a graphene band-modified porous polymer-based foam material and a preparation method and application thereof. Background technique [0002] Polymer foams with low density and high porosity have attracted extensive attention due to their large oil absorption capacity, fast adsorption rate, and easy recycling of oil and materials. However, due to the existence of a large number of hydrophilic groups in the polymer foam itself or the lipophilic and hydrophilic amphiphilic materials, it can absorb a lot of water while absorbing oil, and it is difficult to achieve efficient oil-water separation or oil-water pollution treatment. In the prior art, modifying functionalized fillers, small molecules or polymers to the surface of three-dimensional carrier materials such as polymer foams has become an important way to prepare functional composite materials....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08L61/28C08K9/06C08K3/04C02F1/28
CPCC02F1/285C08K3/04C08K9/06C08L75/04C08L61/28
Inventor 赵丽胡丽丽汤龙程吴连斌蒋剑雄
Owner HANGZHOU NORMAL UNIVERSITY
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