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

Production process of nanofiber composite filtering paper

A composite filtration and nanofiber technology, which is applied in filtration separation, membrane filter, fiber treatment, etc., can solve the problems of engine flameout, inhalation into the engine, loss of oil-water separation effect, etc., and achieve high filtration efficiency

Active Publication Date: 2019-09-06
ZHEJIANG JIAHAI NEW MATERIALS CO LTD
View PDF13 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing published patents "A high-efficiency oil-water separation composite fiber membrane and its preparation method" (CN201410125768.1), "A magnetically responsive high-efficiency oil-water separation fiber membrane and its preparation method" (CN201410584912.8), "Efficient electrospinning Silk oil-water separation fiber membrane" (CN201610040433.9), "An oil-water separation fiber membrane with excellent antifouling ability and its preparation method" (CN201610580631.4), "A high-efficiency and high-flux two-dimensional network ultrafine Fibrous oil-water separation materials and preparation methods thereof" (CN 107557894 B) etc. have reported the method of utilizing electrospinning to prepare oil-water separation materials; but these methods only involve the principles of simple oil absorption and hydrophobicity, and do not consider nanofiber materials. The complexity of the oil-water mixture that needs to be filtered after being applied in actual working conditions and the comprehensive requirements for filter materials and filter structure design
[0005] At present, the PP or PBT fuel composite filter media used in the mainstream in the market generally encounter the problem of poor oil-water separation effect, and the oil-water separation effect will be lost after a period of use. Some fuel filters may cause frequent engine flameouts due to excessive resistance, etc. question
[0006] Although the above-mentioned published patent inventions all mentioned the advantages of nanofibrous membranes for oil-water separation, in the two-dimensional or three-dimensional nanofiber structures involved in these patents, the interaction force between nanofibers is very weak, and these nanofiber materials are as high as several Under the action of fuel pressure in megapascals, the nanofibers will slip, disperse and even risk being sucked into the engine
At present, there is no specific patent for the detailed description of the nanofiber membrane filter material and production process applied to the fuel filter of the internal combustion engine

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
  • Production process of nanofiber composite filtering paper
  • Production process of nanofiber composite filtering paper
  • Production process of nanofiber composite filtering paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] combine figure 1 and figure 2 , to describe this embodiment in detail. The production process of a nanofiber composite filter paper involved in this embodiment includes preparing the first electrospinning solution and the second electrospinning solution, and adopting high-voltage electrospinning on the mass production equipment to form Nanofiber membrane layer.

[0037] Preparation of the first electrospinning solution: dissolving TPU in a mixed solvent; wherein, the mass fraction of TPU is 8%-20%. Preparation of the second electrospinning solution: dissolving TPU in a mixed solvent; wherein, the mass fraction of TPU is 2%-8%. The TPU used is a TPU resin containing branched siloxane groups, the molecular weight is 40,000-200,000, the molecular weight of siloxane groups accounts for 5%-50%, and the number of carbon atoms in the siloxane branched chains is 4-16. In this embodiment, the mass fraction of TPU in the first electrospinning solution is 10%. In the second ...

Embodiment 2

[0051] combine figure 1 and figure 2 Right, the production process of the nanofiber composite filter paper involved in the present invention is described, and the difference with embodiment one is:

[0052] In this embodiment, the ordinary filter paper layer 432 is selected as glass fiber non-woven fabric, the grammage is 300GSM, and the air permeability is 300L / m 2 / s.

[0053] In this embodiment, the mass fraction of TPU in the first electrospinning solution is 20%. In the second electrospinning solution, the mass fraction of TPU is 8%.

[0054] In this embodiment, the voltage between spinneret 1 012 and receiving screen 1 011 is 50KV, and the distance is 25mm; the voltage between spinneret 2 022 and receiving screen 2 021 is 50KV, and the distance is 25mm.

Embodiment 3

[0056] combine figure 2 and image 3 , to describe this embodiment in detail. The production process of a kind of nanofiber composite filter paper involved in this embodiment is described. The difference from Embodiment 1 is that the melt-blown cotton layer 433 and the ordinary non-woven fabric layer 434 are sequentially combined with the nanofiber film layer 431. The ordinary filter paper layer 432 is compounded to form a nanofiber composite filter paper consisting of a nanofiber film layer 431 , an ordinary filter paper layer 432 , a melt-blown cotton layer 433 and an ordinary non-woven fabric layer 434 in sequence.

[0057] In this embodiment, the melt-blown cotton layer 433 includes at least one of PBT, PET, PPS, PP, and aramid fibers, the average diameter of the fibers in the melt-blown cotton layer 433 is 0.5-10 μm, and the surface density is 30-300GSM . In this embodiment, PBT is preferred, and other fiber materials can also be selected according to actual needs. T...

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
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a production process of nanofiber composite filtering paper. The production process includes: dissolving TPU into a mixed solvent to prepare first and second static spinning solutions; putting a base material onto nanofiber composite filtering paper mass production equipment, adopting a method of high-pressure static spinning to enable the first and second static spinning solutions to form nanofiber membrane layers on the surface and gaps of the base material. A nanofiber layer can be formed on the surface of the base material continuously, contact angles of a TPU nanofiber layer to oil and water are 0 degree and more than 150 degree respectively, and efficiency of separating oil and water in fuel oil reaches higher than 99%. The water in the fuel oil can be separated first and then filtered, and oil-water separating and filtering of the fuel oil are realized. Water which is separated out finally can be timely divorced from the surface of a filtering material ina filter element to sink into a water collection cup. Pearl-shaped nanofiber contains solvent which is not volatilized completely, so that the nanofiber layer is ensured not to be broken up or stripped when high-pressure fuel oil passes.

Description

technical field [0001] The invention relates to the technical field of fuel oil filter paper production, in particular to a production process of nanofiber composite filter paper. Background technique [0002] At present, almost all construction machinery such as trucks and loaders use diesel engines. There are more or less impurities such as various particles, paraffin, and moisture in the diesel used by diesel engines. After these impurities pass through the fuel supply system of diesel engines, they will There are various ills such as clogged fuel injectors, corroded cylinders, increased carbon deposits, etc., especially as the country vigorously promotes engines and motor vehicles with emissions up to five countries and six countries, the precision of the fuel supply system of the engine and the internal parts of the engine is getting higher and higher. The market is in urgent need of a fuel filter with high efficiency, low resistance, and continuous oil-water separation...

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 Applications(China)
IPC IPC(8): D04H13/00D04H1/728D04H1/4358D01D5/00B01D39/16B01D17/02B32B27/12B32B27/08B32B27/02B32B7/12B32B27/32B32B27/36B32B33/00
CPCD04H13/00D04H1/728D04H1/4358D01D5/0061B01D39/16B01D17/0202B32B5/022B32B5/26B32B7/12B32B33/00B01D2239/0631B32B2250/20B32B2262/14B32B2262/0284B32B2262/0253B32B2307/726B32B2554/00
Inventor 夏建华
Owner ZHEJIANG JIAHAI NEW MATERIALS CO LTD