Preparation method of polyacrylonitrile/reduced graphene oxide composite oil absorption material

A graphene composite and polyacrylonitrile technology, which is applied in chemical instruments and methods, separation methods, general water supply saving, etc., can solve the problems of complex preparation process, low reproducibility, and low oil absorption ratio, and achieve simple preparation process, The effect of low cost and fast oil absorption rate

Active Publication Date: 2020-11-06
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems of low oil absorption ratio, complex preparation process, high cost and low reproducibility of existing polymer porous oil-absorbing materials, and provides a preparation method of polyacrylonitrile / reduced graphene oxide composite oil-absorbing material

Method used

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  • Preparation method of polyacrylonitrile/reduced graphene oxide composite oil absorption material
  • Preparation method of polyacrylonitrile/reduced graphene oxide composite oil absorption material
  • Preparation method of polyacrylonitrile/reduced graphene oxide composite oil absorption material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the first step, the length of the polyacrylonitrile fiber is chopped to 5 mm, and then put into a pulverizer for further shearing to make the fiber evenly dispersed, and 0.1 g of the polyacrylonitrile fiber is weighed for future use.

[0028] The second step is to prepare an aqueous solution of reduced graphene oxide: mix 30 mg of graphene oxide, 30 mg of ascorbic acid and 30 g of distilled water, and stir for 30 min in a magnetic stirrer with a rotation speed of 500 rpm. Mix 0.1 g of polyacrylonitrile fibers weighed in the first step with the reduced graphene oxide aqueous solution, and after the polyacrylonitrile fibers are completely soaked, ultrasonically disperse for 20 minutes to obtain a pasty polyacrylonitrile / reduced graphene oxide dispersion.

[0029] In the third step, after sealing the polyacrylonitrile / reduced graphene oxide dispersion liquid obtained in the second step, put it into an oven with a temperature of 80° C. for hydrothermal treatment for 3 hou...

Embodiment 2

[0033] In the second step, the quality of graphene oxide was 15 mg, the quality of ascorbic acid was 15 mg, and the quality of polyacrylonitrile fiber was 0.3 g. All the other steps were the same as in Example 1.

Embodiment 3

[0035] The quality of graphene oxide in the second step is 180 mg, the quality of ascorbic acid is 180 mg, and the quality of polyacrylonitrile fiber is 0.1 g, and the rest of the steps are the same as in Example 1.

[0036] The contact angle photos of water droplets on the longitudinal surface of the adsorption material are as follows: Figure 4 shown. It can be seen from the figure that the addition of silane coupling agent can increase the water contact angle of the composite material to a certain extent, making the hydrophobic property of the material better.

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Abstract

The invention discloses a preparation method of a polyacrylonitrile/reduced graphene oxide composite oil absorption material, belongs to the field of oil absorption materials, and aims to solve the problems that an existing polymer porous oil absorption material is low in oil absorption rate and complex in preparation process. The preparation method comprises the following steps of: chopping polyacrylonitrile fibers to 3-5mm; putting the chopped polyacrylonitrile fibers into a crusher; uniformly dispersing and infiltrating the chopped polyacrylonitrile fibers into a reduced graphene oxide aqueous solution; carrying out ultrasonic treatment for 10-30min; sealing an obtained product in a container; putting the container into a drying oven; carrying out hydrothermal reaction; cooling to roomtemperature; washing a reaction product with distilled water; freezing the reaction product in a refrigerator; and finally drying the reaction product in a freeze dryer to obtain the polyacrylonitrile/reduced graphene oxide composite oil absorption material. According to the preparation method, the polyacrylonitrile fibers are taken as a framework, and the reduced graphene oxide is taken as a reinforcing phase; the oil absorption material which is ultra-light, high in saturated oil absorption rate, high in oil absorption rate, stable in structure and capable of being recycled for multiple times is prepared through the hydrothermal method and freeze drying, and the oil absorption material is widely applied to the fields of oil stain leakage and the like.

Description

technical field [0001] The invention belongs to the technical field of oil-absorbing materials, and in particular relates to a preparation method of a polyacrylonitrile / reduced graphene oxide composite oil-absorbing material. Background technique [0002] Rapid industrial development, offshore oil production and maritime transportation have all contributed greatly to the progress of society. However, the resulting oil and toxic organic solvent leakage accidents have brought serious harm to human health and the ecological environment. Therefore, the world is still seeking effective ways to solve the problem of how to collect spilled oil and organic solvents from water. At present, in order to separate oil-water mixtures, many methods have been adopted, such as oil skimmers, in-situ combustion, chemical dispersants, oil-absorbing materials, and other separation methods. Among these methods, oil-absorbing materials are considered to be one of the most promising methods to sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
CPCB01D17/0202Y02A20/204
Inventor 王淑花温泽玲王美蓉郭红史晟侯文生
Owner TAIYUAN UNIV OF TECH
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