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PVDF film containing metal nano titanium powder and preparation method and application thereof

A metal nano, nano titanium technology, applied in chemical instruments and methods, general water supply conservation, water/sludge/sewage treatment, etc., can solve the problems of insufficient solar energy utilization, limited application, high price, etc., and achieve cost and energy savings. consumption, improved protection, and low cost

Active Publication Date: 2018-07-17
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, due to the limitations of current technology and instruments, human beings currently use less than 35% of solar energy.
[0006] However, graphene and noble metals (gold, silver) are expensive, which greatly limits their application in the field of seawater desalination. Therefore, a light-absorbing material with low cost and high water evaporation efficiency is sought and applied to light absorption. The preparation of devices has become a challenge that current researchers need to face

Method used

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  • PVDF film containing metal nano titanium powder and preparation method and application thereof
  • PVDF film containing metal nano titanium powder and preparation method and application thereof
  • PVDF film containing metal nano titanium powder and preparation method and application thereof

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preparation example Construction

[0037] The invention provides a kind of preparation method of the PVDF film containing metal nano-titanium powder, it comprises the following steps:

[0038] Step 1: Use PVDF powder to prepare PVDF organic solution. The specific method is: dissolve PVDF powder in an organic solvent and stir and mix evenly; preferably, the organic solvent is N, N-dimethylformamide (DMF) or N - methylpyrrolidone (NMP);

[0039] Step 2: Add metallic nano-titanium powder to the PVDF organic solution and mix evenly;

[0040] Step 3: Spread the above solution evenly on the surface of the flat glass to form a thin film;

[0041] Step 4: Place the flat glass coated with the film in step 3 in water and soak it for a period of time, then take out the film and dry it, so as to prepare a PVDF film containing metal nano-titanium powder.

[0042] The present invention also provides a PVDF film containing metal nano-titanium powder, wherein the PVDF film containing metal nano-titanium powder is made by the a...

Embodiment 1

[0046] Add 14.5 mg of metallic nano-titanium powder into a beaker containing 1 mL of polyvinylidene fluoride organic solution, and sonicate for 15 min to obtain a uniform mixed solution. Take out 0.5mL of the above mixed solution with a dropper, and apply it on a dry and clean flat glass surface with an applicator to form a PVDF film with a size of 8cm×8cm and a thickness of about 150μm. Then the flat glass coated with Ti / PVDF film was quickly immersed in deionized water, and then the Ti / PVDF film was taken out, rinsed with water and ethanol several times, and finally placed in an oven at 50°C for 2 hours. The dried Ti / PVDF film was cut into a circular film with a diameter of 33.5 mm, and a PVDF film with a thickness of about 150 μm and a titanium powder content of about 1 mg was successfully prepared.

Embodiment 2

[0048] Add 29 mg of metal nano-titanium powder into a beaker containing 1 mL of polyvinylidene fluoride organic solution, and sonicate for 15 min to obtain a uniform mixed solution. Take out 0.5mL of the above mixed solution with a dropper, and apply it on a dry and clean flat glass surface with an applicator to form a PVDF film with a size of 8cm×8cm and a thickness of about 150μm. Then the flat glass coated with Ti / PVDF film was quickly immersed in deionized water, and then the Ti / PVDF film was taken out, rinsed with water and ethanol several times, and finally placed in an oven at 50°C for 2 hours. The dried Ti / PVDF film was cut into a circular film with a diameter of 33.5 mm, and a PVDF film with a thickness of about 150 μm and a titanium powder content of about 2 mg was successfully prepared.

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Abstract

The invention discloses a PVDF film containing metal nano titanium powder and a preparation method thereof and application thereof.The preparation method comprises the following steps of 1, using PVDFpowder for preparing a PVDF organic solution; 2, adding the metal titanium powder into the PVDF organic solution and evenly mixing the two; 3, uniformly applying the solution on the surface of flat glass to form a layer of film; 4, after the flat glass coated with the film in step 3 is placed in water for soaking for a period of time, removing and drying the film to obtain the PVDF film containing the metal nano titanium powder. The preparation method of the PVDF film containing the metal nano titanium powder has the advantages of a low cost, a simple preparation process, an excellent photothermal conversion effect and the like, so that the PVDF film containing the metal nano titanium powder has wide application in the field of seawater desalination.

Description

technical field [0001] The invention relates to the technical field of film preparation, in particular to a polyvinylidene fluoride (Polyvinylidene Fluoride, PVDF) film containing metal nano-titanium powder, a preparation method and application thereof. Background technique [0002] With the continuous increase of the global population, the gradual improvement of human living standards and the rapid development of the world's industrial level, the extreme shortage of fresh water resources affects the development of the global economy and the progress of human civilization. In recent years, with the vigorous development of industry, human beings' unrestrained use of fresh water resources and the random discharge of industrial and domestic wastewater have made the already extremely unbalanced supply and demand of fresh water resources more urgent. With the depletion of fresh water resources, in order to meet human demand for fresh water, desalination of seawater (brackish wate...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K3/08C08J5/18C02F1/14C02F1/44C02F103/08
CPCC02F1/14C02F1/448C02F2103/08C08J5/18C08J2327/06C08K2003/0881C08K2201/011Y02A20/124Y02A20/131Y02A20/142Y02A20/212
Inventor 曹胜佳张玉良陶富军尹宽王斌斌李丽
Owner SHANGHAI MARITIME UNIVERSITY
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