Preparation method for hemp-fiber non-woven multilayer composite gradient filtering material

A technology of non-woven fabric and filter material, which is applied in the field of preparation of multi-layer composite gradient filter material of hemp fiber non-woven fabric, can solve problems such as the reduction of single-fiber filtration efficiency, and achieves broad market application prospects, small pore size, and good filtration. effect of effect

Inactive Publication Date: 2016-10-12
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After theoretical analysis and verification, it is found that the filtrati

Method used

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  • Preparation method for hemp-fiber non-woven multilayer composite gradient filtering material
  • Preparation method for hemp-fiber non-woven multilayer composite gradient filtering material
  • Preparation method for hemp-fiber non-woven multilayer composite gradient filtering material

Examples

Experimental program
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Effect test

Example Embodiment

[0025] Example 1

[0026] The preparation method of the hemp fiber nonwoven multi-layer composite gradient filter material of this embodiment includes the following steps: 1) Select hemp / viscose spunlace nonwoven fabric as the substrate. 2) Take 1 piece of substrate from step 1), pour the acrylic adhesive into the dipping tank, then immerse one side of the substrate in the acrylic adhesive for 4 s, and then immerse the other side of the substrate in acrylic 4s in the adhesive. Use a set of rollers to remove the excess acrylic adhesive from the hemp / viscose spunlace nonwoven fabric and make the acrylic adhesive evenly distributed, as the hemp / viscose spunlace nonwoven fabric impregnated with acrylic adhesive for standby. 3) Take another piece of hemp / viscose spunlace nonwoven fabric substrate, directly cover the hemp / viscose spunlace nonwoven fabric impregnated with acrylic adhesive on the substrate, and laminate it with a pressing roller. Dry the prepared laminated composite ma...

Example Embodiment

[0027] Example 2

[0028] The preparation method of a hemp fiber nonwoven multi-layer composite gradient filter material of this embodiment includes the following steps: 1) Select hemp / viscose spunlace nonwoven as a substrate. 2) Take 2 substrates from step 1), pour the acrylic adhesive into the dipping tank, then immerse one side of the substrate in the acrylic adhesive for 4 s, and then immerse the other side of the substrate in the dipping tank. 4s in acrylic adhesive. Use a set of rollers to remove excess acrylic adhesive on the hemp / viscose spunlace nonwoven fabric and make the acrylic adhesive evenly distributed. Then take another piece of the same substrate, pour the acrylic adhesive into the dipping tank, then immerse one side of the substrate in the acrylic adhesive for 4 s, and then immerse the other side of the substrate in the acrylic adhesive 4s. Use a set of rollers to remove excess acrylic adhesive on the hemp / viscose spunlace nonwoven fabric and make the acryli...

Example Embodiment

[0029] Example 3

[0030] The preparation method of a hemp fiber nonwoven multi-layer composite gradient filter material of this embodiment includes the following steps: 1) Select hemp / viscose spunlace nonwoven as a substrate. 2) Take 2 substrates of step 1), one of which is prepared by using 22% spinning solution to prepare an electrospun PA6 nanofiber layer on the substrate, and then take a piece of the same substrate, and pour the acrylic adhesive on the substrate. Then immerse one side of the substrate in the acrylic adhesive for 4 s, and then immerse the other side of the substrate in the acrylic adhesive for 4 s. Use a set of rollers to remove the excess acrylic adhesive on the hemp / viscose spunlace non-woven fabric and make the acrylic adhesive evenly distributed for use. 3) Take another hemp / viscose spunlace nonwoven fabric substrate, and directly cover the hemp / viscose spunlace nonwoven fabric impregnated with acrylic adhesive and electrospun PA6 nanofiber layer on the ...

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Abstract

The invention discloses a preparation method for a hemp-fiber non-woven multilayer composite gradient filtering material. The preparation method comprises the following steps: 1) using hemp/viscose spunlaced non-woven fabric as a substrate; 2) taking one to three substrates mentioned in the step 1), soaking one sides of the substrates in an acrylic acid adhesive for 4 s and then soaking the other sides of the substrates in the acrylic acid adhesive for 4 s; and 3) taking another the hemp/viscose spunlaced non-woven fabric substrate, directly covering the hemp/viscose spunlaced non-woven fabric substrate with the one to three substrates having been soaked into the acrylic acid adhesive, carrying out laminating and compounding by using a pressure roller and then drying a prepared laminar composite at 105 DEG C for 10 min by using a hand-operated drying cylinder. The material prepared in the invention has moderate thickness and ration, small pore sizes and good filtering effect. Gradient filtering effect is obtained through compounding of a plurality of layers, and filtering effect is substantially improved by using a combined impregnation and lamination method.

Description

technical field [0001] The invention relates to a preparation method of a hemp fiber nonwoven multilayer composite gradient filter material, in particular to a preparation method of a hemp fiber nonwoven multilayer composite gradient filter material which can be used for filtering automobile oil filters. Background technique [0002] Hutten I.M.M. (Hutten I.M.M.Handbook of Nonwoven Filter Media[M].Elsevier,2007:369-377.) pointed out in the book that engine filtration is the filtration applied to power vehicles and equipment. These power equipment mainly include cars, trucks, farms Equipment, aircraft, ships, etc. There are 26 different car filters in the car, which can be mainly divided into four types: lubricating oil filter (oil filter), air intake filter, fuel filter, and cabin air filter. Some of the filter materials used in these filters are pleated and some are flat. Lubricating oil filtration prevents engine wear and damage due to the action of foreign particles. T...

Claims

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Application Information

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IPC IPC(8): B01D39/14B32B37/12B32B37/10B32B38/16
CPCB01D39/14B32B37/10B32B37/12B32B38/164B01D2239/10
Inventor 冯建永曾滔王婷婷王颖刘航燕郑宇婷
Owner ZHEJIANG SCI-TECH UNIV
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