Preparation method of freshwater collecting fibers with transmission function and application thereof

A fiber and fresh water technology, applied in the field of chemical bionics, can solve the problems of low water collection efficiency, unsatisfactory, unenvironmental protection, etc., and achieve the effects of good outdoor stability, extended service life, and non-degradation.

Active Publication Date: 2012-07-18
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of low water collection efficiency in the prior art, unable to meet the water needs of vast water-shortage areas, high cost, and not environmentally friendly, the present invention proposes a preparation method and application of freshwater collection fibers with transmission function, It can efficiently collec

Method used

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  • Preparation method of freshwater collecting fibers with transmission function and application thereof
  • Preparation method of freshwater collecting fibers with transmission function and application thereof
  • Preparation method of freshwater collecting fibers with transmission function and application thereof

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preparation example Construction

[0028] The preparation method of a kind of bionic freshwater collection fiber that the present invention proposes, such as figure 1 As shown, it specifically includes the following steps:

[0029] Step 1: Fiber Fixation:

[0030] Use colloid to fix the fiber on the bracket at a certain inclination angle, the inclination angle is preferably 10°-20°, and the average diameter of the fiber is 5-100 μm. Clean the fiber surface with acetone to remove the dust attached to the fiber surface. Fix the bracket on a pull coater (preferably a DipMaster model 50).

[0031] The fibers are synthetic fibers, man-made fibers, natural fibers or inorganic polymer fibers. When selecting synthetic fibers, nylon fibers are preferred; when man-made fibers are selected, cupro fibers are preferred; when natural fibers are selected, silk fibers are preferred; when inorganic polymer fibers are selected, carbon fibers are preferred. When it is preferably nylon fiber, the average diameter of nylon fiber...

Embodiment 1

[0043] Step 1: Fiber Fixation:

[0044] Use colloid to fix the fiber on the bracket at a certain angle, the inclination angle is 10°, the fiber is made of nylon fiber with an average diameter of 15 μm, and the surface of the fiber is cleaned with acetone to remove the dust attached to the surface of the fiber. Fasten the bracket to the pull coater - DipMaster 50 type.

[0045] Step 2: Prepare a polymer solution with a mass fraction of 5%:

[0046] 5 parts by weight of polyvinylidene fluoride PVDF was dissolved in 95 parts by weight of N,N-dimethylformamide DMF solvent, and stirred for 24 hours to make it into a clear and transparent solution to obtain a polymer solution.

[0047] Step 3: Lifting produces protrusions arranged in order of size:

[0048] The stent fixed with the inclined fibers was completely immersed in the polymer solution for 30 s, and pulled at a speed of 150 mm / min.

[0049] Step Four: Drying:

[0050] After the pulling is completed, the fiber covered wi...

Embodiment 2

[0053] Step 1: Fiber Fixation:

[0054] Use colloid to fix the fiber on the bracket at a certain angle, the inclination angle is 20°, the fiber is carbon fiber with an average diameter of 5 μm, and the surface of the fiber is cleaned with acetone to remove the dust attached to the surface of the fiber. Fix the bracket on a pull coater (DipMaster model 50).

[0055] Step 2: Prepare a polymer solution with a mass fraction of 7%

[0056] 7 parts by weight of polyvinylidene fluoride PVDF was dissolved in 93 parts by weight of N,N-dimethylformamide DMF solvent, and stirred for 24 hours to make it into a clear and transparent solution to obtain a polymer solution.

[0057] Step 3: Lifting produces protrusions arranged in order of size:

[0058] The stent fixed with the inclined fibers was completely immersed in the polymer solution for 40 s and pulled at a speed of 175 mm / min.

[0059] Step Four: Drying:

[0060] After the pulling is completed, the fiber covered with the polymer...

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Abstract

The invention discloses a preparation method of freshwater collecting fibers with a transmission function and an application thereof and belongs to the technical field of chemical bionics. The preparation method comprises the following steps of: completely soaking a support fixed with the fibers in a prepared polymer solution with the mass fraction of 5-9% for lifting and pulling, wherein raised nodes, which are sequentially arrayed according to the size, are generated on the fibers, and finally drying to obtain the freshwater collecting fibers. The freshwater collecting fibers are woven intothe freshwater collecting fiber net for carrying out freshwater collection; and the freshwater collecting fiber net can be used for collecting freshwater in fog so that the visibility of air can be increased; and the freshwater collecting fiber net has high water collection efficiency and can be used for removing fog. The heights of the raised nodes on the surfaces of the fibers prepared by the method are uniformly increased from small to large and are controlled; the surfaces of the fibers are provided with more microscopic bulges or micropores so that the collision probability and the spreading speed of water drops in air can be increased, and the efficiency of collecting water is increased; and the freshwater collecting fibers are suitable for coastal deserts, islands, ocean ships, foggy mountain areas and the like; and the cost of the freshwater collecting fiber for collecting the freshwater is far lower than the cost for the desalination of sea water.

Description

technical field [0001] The invention belongs to the technical field of chemical bionics, and in particular relates to a preparation method and application of a fresh water collection fiber with transmission function. Background technique [0002] At present, the scarcity of water resources has become a worldwide problem, which will seriously affect the sustainable development of the national economy and national ecological security, and poses a great threat to human survival. [0003] According to the United Nations Environment Programme, drylands cover about 41% of the total land area globally. In my country, the area of ​​arid regions has reached 2.5×10 6 km 2 , accounting for about 1 / 4 of the country's land area. Moreover, with the climate anomalies caused by global warming, the problem of water scarcity has intensified in some places. In addition, some coastal areas also have to spend a lot of energy for desalination because of the shortage of fresh water resources. ...

Claims

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Application Information

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IPC IPC(8): D06M15/263D06M15/256D06B3/04D06B23/04
Inventor 郑咏梅陈媛薛焱王琳江雷
Owner BEIHANG UNIV
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