Unlock instant, AI-driven research and patent intelligence for your innovation.

A polyvinylidene fluoride/nanocellulose superhydrophobic material and preparation method thereof

A technology of polyvinylidene fluoride and nanocellulose, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of further improvement of hydrophobicity and oil absorption, and achieve simple operation and simple process Effect

Active Publication Date: 2018-10-19
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a polyvinylidene fluoride / nanocellulose superhydrophobic material, thereby solving the problem that the hydrophobicity and oil absorption of the existing polyvinylidene fluoride oil-water separation materials need to be further improved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A polyvinylidene fluoride/nanocellulose superhydrophobic material and preparation method thereof
  • A polyvinylidene fluoride/nanocellulose superhydrophobic material and preparation method thereof
  • A polyvinylidene fluoride/nanocellulose superhydrophobic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The polyvinylidene fluoride / nanocellulose superhydrophobic material of this embodiment is prepared by a method comprising the following steps:

[0046] 1) Prepare polyvinylidene fluoride solution with 5g of polyvinylidene fluoride powder and 50ml of dimethylformamide solvent;

[0047] 2) Mixing 0.05g of nanocellulose with the polyvinylidene fluoride solution obtained in step 1), and ultrasonically dispersing to obtain a mixed solution;

[0048] 3) Store the mixed solution obtained in step 2) in container A, place container A in container B containing methanol, and seal container B; the methanol in container B enters into container A through slow volatilization to realize contact with the mixed solution Mass transfer, control the mass transfer time to 4d to obtain a gel;

[0049] 4) Place the gel obtained in step 3) in distilled water, take it out after 4 days, and obtain a semi-finished product;

[0050] 5) Freeze-dry the semi-finished product obtained in step 4) at -...

Embodiment 2～3

[0055] The preparation method of the polyvinylidene fluoride / nanocellulose superhydrophobic material of Examples 2-3 is basically the same as that of Example 1, and the different process parameters are listed in Table 1.

[0056] The preparation process parameter of the polyvinylidene fluoride / nanocellulose superhydrophobic material of table 1 embodiment 2~3

[0057] serial number

[0058] The preparation method of the nanocellulose is the same as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a polyvinylidene fluoride (PVDF) / nano cellulose superhydrophobic material and a preparation method thereof. The preparation method comprises the following steps: (1) dissolving PVDF into dimethyl formamide to prepare a PVDF solution; (2) adding nano cellulose into the PVDF solution, and mixing to obtain a mixed solution, wherein the mass ratio of nano cellulose to PVDF is 1-5:100; (3) under an enclosed condition, contacting the mixed solution with methanol to carry out mass transfer to obtain gel; (4) placing the gel in water, and freeze-drying the gel to obtain the PVDF / nano cellulose superhydrophobic material. According to the preparation method, the ratio of raw materials is and phase change process are reasonably controlled, and a freeze-drying technology is adopted to prepare the PVDF / nano cellulose superhydrophobic material, the contact angle between the material and water can reach 150 degree or more, and the material has an excellent oil-absorbing performance and thus can be used to separate water and oil in high efficiency.

Description

technical field [0001] The invention belongs to the technical field of oil-water separation materials, and in particular relates to a polyvinylidene fluoride / nanocellulose superhydrophobic material and a preparation method thereof. Background technique [0002] In the petrochemical, mechanical processing, mining, leather, pharmaceutical and other fields, a large amount of industrial oily wastewater needs to be discharged every year. If it is directly discharged into the water, it will inevitably cause great environmental pollution and threaten human health. With the deepening of people's emphasis on environmental protection and the implementation of various environmental protection laws and regulations, the treatment of oily wastewater has received more and more attention. [0003] How to eliminate the pollution of water by the oil industry and various accidental oil spills is a worldwide problem. Many methods have been applied to eliminate oil pollution, such as oil scrape...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/28C08J3/09C08L27/16C08L1/04B01D71/34B01D69/02B01D67/00
CPCB01D67/0009B01D69/02B01D71/34C08J3/09C08J9/28C08J2327/16C08L27/16C08L1/04
Inventor 何领好崔冰冰蔡立芳王晓辉高海丽郭佩宋锐张宏忠
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY