Hemp composite filter material and its preparation method

A compound filtration and hemp technology, which is applied in the direction of filtration separation, separation methods, chemical instruments and methods, etc., can solve problems such as increased use costs, damage to filter media, and unsatisfactory filtration effects

Inactive Publication Date: 2012-10-24
DONGHUA UNIV +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Among the commonly used filter materials, the composite material is a commonly used material, or it is compounded by two layers, or it is compounded by three layers. Among the filter materials commonly used for automotive oil filter elements, cotton is more commonly used. Wood pulp filter paper, glass fiber filter paper, polyester non-woven fabric filter material and polypropylene non-woven fabric filter material, the main filtration level of this material is micron level, both in terms of filtratio...

Method used

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  • Hemp composite filter material and its preparation method
  • Hemp composite filter material and its preparation method
  • Hemp composite filter material and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Embodiment 1, preparation hemp fiber composite filter material

[0037] (1) Preparation before weaving: hemp fiber and viscose fiber are selected. The density is 14.75μm, the hemp fiber is 6KG, and the viscose is 4KG when the sample is produced, so the blending ratio is 3:2, and the initial weight is scheduled to be 150g / m 2 .

[0038] (2) Opening and cleaning: Firstly, the hemp fiber and viscose fiber are manually opened, and the bag-shaped fiber bags in the hemp fiber and viscose fiber are torn apart by hand, and the tearing is as uniform as possible and done. Do not damage the fiber; because the color of the hemp fiber is light yellow, it is found that there are few impurities in it, basically no, and the feel is relatively soft, while the viscose fiber has more impurities. In the process of manual opening, it is found that there are branches, leaves, Impurities such as cottonseed, broken seeds, fiber seed scraps and metal products need to be removed in time to ens...

Embodiment 2

[0083] Embodiment 2, preparation hemp fiber composite filter material

[0084] (1) In the step of preparing the hemp / viscose spunlace nonwoven fabric, the preparation process is the same as that in Example 1, except that the average length of the viscose fiber is 34.06 mm, and the fineness is 11.645 μm; The average length of the hemp fiber is 90 mm, and the fineness is 3.35 μm; the mass ratio of the hemp fiber to the viscose fiber is 4:1; the drafting step is carried out in 3 drafting zones, each drafting zone The drafting ratio of each is 2; in the spunlace step, two spunlace processes are used, wherein, in the first spunlace process, the pressure of the first spunlace head is 10 bar, and the pressure of the second spunlace head is 65bar; in the second spunlace process, the pressure of the first spunlace head is 20bar, and the pressure of the second spunlace head is 80bar.

[0085] The properties of the prepared hemp / viscose spunlace nonwoven fabric are as follows in Table 9...

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Abstract

The invention discloses a hemp composite filter material and its preparation method. The method comprises the following steps: 1, mixing a hemp fiber with a viscose fiber, and then sequentially carrying out steps of opening, carding, lapping, drafting, spunlace and drying to obtain a hemp/viscose spunlaced non-woven; and 2, preparing a nanometer fiber layer on the hemp/viscose spunlaced non-woven through electrostatic spinning to obtain the hemp composite filter material. The composite filter material provided by the invention is a two-layer composite material comprising the micrometer-diameter hemp/viscous spunlaced non-woven and the nanometer-diameter fiber, wherein the hemp/viscous spunlaced non-woven has the advantages of good physical performances, good permeability, small thickness and proportion, large breaking strength and good wear resistance; and a comparison between the base cloth of the hemp/viscous spunlaced non-woven and the two-layer composite filter material disclosed in the invention in filter performance and bore diameter indicates that the two-layer composite filter material provided by the invention has a better filter effect.

Description

technical field [0001] The invention relates to a hemp composite filter material and a preparation method thereof. Background technique [0002] Among the commonly used filter materials, the composite material is a commonly used material, or it is compounded by two layers, or it is compounded by three layers. Among the filter materials commonly used for automotive oil filter elements, cotton is more commonly used. Wood pulp filter paper, glass fiber filter paper, polyester non-woven fabric filter material and polypropylene non-woven fabric filter material, the main filtration level of this material is micron level, both in terms of filtration accuracy and pore size, so its filtration The effects are not ideal. At the same time, the automobile oil filter is mainly to filter and remove the dust, metal particles and other particles that are easy to block the filter medium in the oil, so that the oil can enter the engine system smoothly. These commonly used oil filter materials...

Claims

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Application Information

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IPC IPC(8): B01D39/16B32B5/24B32B23/02
Inventor 冯建永张建春杨大祥张华靳向煜
Owner DONGHUA UNIV
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