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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 filtration efficiency of single fiber decreases with the increase of Peclet number

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
Comparison scheme
Effect test

Embodiment 1

[0026]The preparation method of a hemp fiber nonwoven multilayer composite gradient filter material in this embodiment includes the following steps: 1) Select hemp / viscose spunlace nonwoven as the base material. 2) Take 1 substrate from step 1), first pour the acrylic adhesive into the dipping tank, then dip one side of the substrate in the acrylic adhesive for 4 s, then dip the other side of the substrate in the acrylic 4s in adhesive. Use a set of rollers to remove excess acrylic adhesive on the hemp / viscose spunlaced nonwoven fabric and distribute the acrylic adhesive evenly, and use it as a hemp / viscose spunlaced nonwoven fabric impregnated with acrylic adhesive. 3) Take another piece of hemp / viscose spunlaced nonwoven fabric substrate, directly cover the hemp / viscose spunlace nonwoven fabric impregnated with acrylic adhesive on the substrate, and use a pressure roller for lamination, The prepared laminated composite material was dried at 105°C for 10 min with a hand drye...

Embodiment 2

[0028] The preparation method of a hemp fiber nonwoven multilayer composite gradient filter material in this embodiment includes the following steps: 1) Select hemp / viscose spunlace nonwoven as the base material. 2) Take 2 substrates from step 1), first pour the acrylic adhesive into the dipping tank, then dip one side of the substrate in the acrylic adhesive for 4 s, and then dip the other side of the substrate in the 4s in acrylic adhesive. A set of rollers was used to remove excess acrylic adhesive from the hemp / viscose spunlaced nonwoven and to distribute the acrylic adhesive evenly. Take another same substrate, first pour the acrylic adhesive into the dipping tank, then dip one side of the substrate in the acrylic adhesive for 4 s, then dip the other side of the substrate in the acrylic adhesive 4s. A set of rollers was used to remove excess acrylic adhesive from the hemp / viscose spunlaced nonwoven and to distribute the acrylic adhesive evenly. Available as hemp / viscos...

Embodiment 3

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

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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